37,951 research outputs found
Thalictrum bouffordii Y. P. Zeng, Q. Yuan & Q. E. Yang 2021
No full textKey to Thalictrum bouffordii and its closely similar species 1a. Stamens 6‒7 mm long; achenes pubescent........................................................................................................................................2 1b. Stamens 3‒5 mm long; achenes glabrous...........................................................................................................................................3 2a. Sepals pubescent abaxially; filaments purplish................................................................................................................ T. bouffordii 2b. Sepals glabrous; filaments white................................................................................................................................... T. xinningense 3a. Inflorescence a thyrse; stamens 14‒20............................................................................................................................. T. nepalense 3b. Inflorescence dichotomous and corymbiform; stamens 40‒60....................................................................................... T. javanicumPublished as part of Zeng, You-Pai, Yuan, Qiong & Yang, Qin-Er, 2021, Thalictrum bouffordii (Ranunculaceae), a new species from the Qionglai mountains region in western Sichuan, China, pp. 18-28 in Phytotaxa 510 (1) on page 27, DOI: 10.11646/phytotaxa.510.1.2, http://zenodo.org/record/542624
FIGURE. Mitotic metaphase chromosomes of Thalictrum longistipitatum (A) (2n = 14), T. tsawarungense (B, C) (2n = 14), T. wangii (D) (2n = 14), and T. rostellatum (E, F) (2n = 28), all same scale. A. China, Xizang, Bomi, L. Wang, X.Q. Guo & Y.P. Zeng 3350 (IBSC). B. China, Xizang, Bomi, L. Wang, X.Q. Guo & Y.P. Zeng 3313 (IBSC). C. China, Xizang, Bomi, L. Wang, X.Q. Guo & Y.P. Zeng 3317 (IBSC). D. China, Yunnan, Lijiang, Y.P. Zeng & Y.F. Luo 200 (IBSC). E. China, Xizang, Gyirong, L. Wang, X.Q. Guo & Y.P. Zeng 2732 (IBSC). F. China, Xizang, Mainling, L. Wang, X.Q. Guo & Y.P. Zeng 3295 (IBSC). in Thalictrum hengduanshanense and T. longistipitatum (Ranunculaceae), two new species from southeastern Xizang and northwestern Yunnan, China
No full textFIGURE. Mitotic metaphase chromosomes of Thalictrum longistipitatum (A) (2n = 14), T. tsawarungense (B, C) (2n = 14), T. wangii (D) (2n = 14), and T. rostellatum (E, F) (2n = 28), all same scale. A. China, Xizang, Bomi, L. Wang, X.Q. Guo & Y.P. Zeng 3350 (IBSC). B. China, Xizang, Bomi, L. Wang, X.Q. Guo & Y.P. Zeng 3313 (IBSC). C. China, Xizang, Bomi, L. Wang, X.Q. Guo & Y.P. Zeng 3317 (IBSC). D. China, Yunnan, Lijiang, Y.P. Zeng & Y.F. Luo 200 (IBSC). E. China, Xizang, Gyirong, L. Wang, X.Q. Guo & Y.P. Zeng 2732 (IBSC). F. China, Xizang, Mainling, L. Wang, X.Q. Guo & Y.P. Zeng 3295 (IBSC).Published as part of Zeng, You-Pai, Yuan, Qiong & Yang, Qin-Er, 2022, Thalictrum hengduanshanense and T. longistipitatum (Ranunculaceae), two new species from southeastern Xizang and northwestern Yunnan, China, pp. 1-20 in Phytotaxa 571 (1) on page 16, DOI: 10.11646/phytotaxa.571.1.1, http://zenodo.org/record/727042
Thalictrum minshanicum Y. P. Zeng, Q. Yuan & Q. E. Yang 2021, sp. nov.
No full text1. Thalictrum minshanicum Y. P. Zeng, Q. Yuan & Q. E. Yang, sp. nov. Figs. 1, 3, 4. Type:— CHINA. Sichuan: Pingwu county, along Road S205, near Baima town, 32°44′59.83″N, 104°18′44.47″E, in forests, alt. 2090 m, 28 June 2020, Y. P. Zeng & Q. L. Huang 337 (holotype IBSC, barcode unavailable; isotypes CDBI, IBSC, PE, barcodes unavailable). Description:—Perennial herbs. Roots fibrous, distally tuberose. Stem to 150 cm tall, striate, puberulent, distally branched. Leaves 2‒4-ternate; blade triangular, 10‒18 cm long, 10‒18 cm broad; leaflets obovate, orbicular or broadly ovate, 1‒3 cm long, 1‒3 cm broad, herbaceous, both sides puberulent, green on adaxial side, pale green on abaxial side, base rounded or subcordate, apex obtuse or acute, 3-lobate; lobes entire or 2‒3-lobate, apex obtuse or acute; veins flat adaxially, slightly prominent abaxially; petiole slender, 3‒10 cm long; stipule membranous, margin torn. Inflorescence compound monochasia, corymbiform; rachis sparsely puberulent. Pedicels 1‒1.5 cm long, sparsely puberulent. Flowers bisexual, erect. Sepals 4‒5, caducous, elliptic, ca. 5 mm long, ca. 2.5 mm broad, white or purplish, glabrous. Stamens 45‒60, ca. 7 mm long; filament clavate, ca. 5.5 mm long, purplish; anther oblong, ca. 1.5 mm long, apex obtuse, white. Carpels 6‒10, sessile, ca. 2 mm long; ovary lunate-fusiform, shallowly ribbed, ca. 1 mm long; style slightly recurved, ca. 1 mm long; stigma conspicuous, linear, ca. 0.6 mm long. Achenes sessile, ca. 4 mm long, glabrous; body fusiform, profoundly ribbed; style persistent, slightly recurved at apex. Distribution and habitat:— Thalictrum minshanicum is currently known from southern Gansu (Wudu, Zhugqu) and northwestern Sichuan (Beichuan, Pingwu) (Fig. 5) in the Min Shan region of China. It grows in thickets or forests on slopes at altitudes of 1400‒2090 m above sea level. Phenology:—Flowering from June to August; fruiting from August to September. Etymology:—The specific epithet is derived from the Min Shan region, where the new species occurs. Additional specimens examined:— CHINA. Gansu: Wudu, P.C. Kuo 5090 (WUK, barcode unavailable); Zhugqu, P.C. Kuo 5390 (WUK, barcode unavailable). Sichuan: Beichuan, C.L. Tang et al. 269 (CDBI0026275, CDBI0026276); Pingwu, Anonymous 121 (CDBI0026442, CDBI0026443), Y.P. Zeng & Q.L. Huang 330 (IBSC, barcode unavailable), Y.P. Zeng & Q.L. Huang 448 (IBSC, barcode unavailable). Conservation status:— Thalictrum minshanicum is currently known from four populations in southern Gansu and northwestern Sichuan, China. The population in Pingwu, northwestern Sichuan, which we rediscovered recently, consists of no more than 100 individuals. The size of the other three populations remains unknown. The conservation status of T. minshanicum should therefore be considered as “Data Deficient (DD)” before adequate information of this species is acquired (IUCN Standards and Petitions Committee 2019). Notes:— Thalictrum minshanicum is most closely similar to T. brevisericeum Wang & Wang (1974: 603) (Figs. 6, 7) in habit and in having puberulent stem and leaves, but differs by having conspicuously 3-lobate (vs. slightly 3-lobate) leaflets, glabrous (vs. abaxially puberulent) sepals, longer (ca. 7 mm vs. ca. 4 mm) and clavate (vs. oblanceolate-linear) filaments, conspicuous (vs. inconspicuous) stigmas, and persistent styles slightly recurved (vs. circinate) at apex (Figs. 3, 4). Thalictrum brevisericeum is widely distributed in China’s eastern and southern Gansu, western Henan, central and western Shaanxi, southwestern Shanxi, northwestern Sichuan, and northwestern Yunnan (Wang & Wang 1979, Fu & Zhu 2001, Wang 2018a; Fig. 5). Populations of northwestern Yunnan have been treated as a variety, i.e. var. angustiantherum Wang (2018a: 88). Another variety from Heishui in northwestern Sichuan, var. pentagynum Wang (2018a: 88), actually should belong to T. uncinulatum Franchet ex Lecoyer (1885: 169), a species distributed in Chongqing, Gansu, Guizhou, Hubei, Hunan, Shaanxi, Sichuan, and Yunnan, China (Zeng et al. 2021a). As mentioned before, specimens of Thalictrum minshanicum have been previously misidentified as T. javanicum or T. ramosum. Thalictrum minshanicum differs from T. javanicum (Fig. 8) by having puberulent stem and leaves and apically slightly recurved (vs. circinate) styles. From T. ramosum (Figs. 9, 10) it differs by having puberulent (vs. glabrous) leaves, longer stamens (ca. 7 mm vs. ca. 3 mm), and elliptic-fusiform (vs. lanceolate) achenes. It is to be noted that the true Thalictrum javanicum probably does not occur in China. The Chinese specimens previously identified as T. javanicum should belong to two recently described species. Those with a corymbiform inflorescence and widely distributed in China’s southern Chongqing, northern Guangdong, northern Guangxi, eastern Guizhou, southwestern Hubei, Hunan, Jiangxi and southern Zhejiang belong to T. xinningense Wang (2017: 408) (Wang 2018a, Zeng et al. 2021b), and those with a paniculiform inflorescence and widely distributed in China’s northeastern Chongqing, western Guizhou, northwestern Hubei, southern Shaanxi, Sichuan, Xizang, and Yunnan, and in Nepal, belong to T. nepalense Wang (2018b: 641). The independent specific status of T. sessile Hayata (1913: 6) from China’s Taiwan, a species previously treated as a synonym of T. javanicum (Wang & Wang 1979, Li 1986, Liu 2000, Fu & Zhu 2001), has been reinstated by Wang (2018a). In fact, Liu & Hsieh (1976) and Yang & Huang (1989, 1996, 2008) recognized T. sessile as an independent species. Indeed, further studies are needed to clarify the delimitation and geographical distribution of T. javanicum.Published as part of Zeng, You-Pai, Yuan, Qiong & Yang, Qin-Er, 2021, Thalictrum minshanicum and T. pseudoramosum (Ranunculaceae), two new species from China, pp. 133-148 in Phytotaxa 502 (2) on pages 133-134, DOI: 10.11646/phytotaxa.502.2.2, http://zenodo.org/record/542498
Thalictrum bouffordii Y. P. Zeng, Q. Yuan & Q. E. Yang 2021, sp. nov.
No full textThalictrum bouffordii Y. P. Zeng, Q. Yuan & Q. E. Yang, sp. nov. (Figs. 1‒4). Type:— CHINA. Sichuan: Tianquan county, Xingou town, along G318 highway, near Chizhuping, 29°53′16.75″N, 102°21′21.77″E, on moist cliffs in ravine, 1690 m, 6 July 2020, Y. P. Zeng & Q. L. Huang 352 (holotype IBSC, barcode unavailable; isotypes CDBI, IBSC, PE, barcodes unavailable). Description:—Perennial herbs. Roots fibrous. Stem to 100 cm tall, striate, distally branched. Leaves 2‒4-ternate; blade triangular, 10‒25 cm long and broad; leaflets ovate, broadly ovate or rhombic, 1‒3 cm long, 0.8‒2.5 cm broad, papery, both sides glabrous, green on adaxial side, pale green on abaxial side, base rounded or subcordate, apex obtuse or acute, 3-lobate; lobes entire or 2‒3-lobate, apex obtuse or acute; veins flat adaxially, slightly raised abaxially; petiole slender, 1.5‒10 cm long; stipule membranous, margin torn. Inflorescence a many-flowered corymbiform compound monochasium, dichotomous; rachis glabrous or sparsely pubescent. Pedicels 0.8‒1.5 cm long, glabrous or sparsely pubescent. Flowers bisexual, erect. Sepals 4‒5, caducous, cymbiform-elliptic, ca. 4 mm long, ca. 2 mm broad, whitish tinged with purplish to distinctly purple, abaxially pubescent. Stamens ca. 60, 6‒ 7 mm long; filaments clavate, ca. 5.5 mm long, purplish; anthers oblong, ca. 1.5 mm long, apex obtuse, white. Carpels 6‒10, sessile, ca. 2 mm long; ovary lunate-fusiform, shallowly ribbed, ca. 1 mm long, glabrous or sparsely pubescent; style ca. 1 mm long, recurved at apex; stigma conspicuous, linear, ca. 0.5 mm long. Immature achenes sessile, ca. 3 mm long; body fusiform, profoundly ribbed, pubescent; style persistent, recurved at apex. Distribution and habitat:— Thalictrum bouffordii is currently known from Luding, Shimian and Tianquan counties in the Qionglai mountains region in western Sichuan, China (Fig. 5). It grows along forest margins or on moist cliffs in ravines at altitudes of 1360‒3200 m above sea level. Phenology:—Flowering from June to October; fruiting from July to November. Etymology:—It is a great privilege to name our new species in honor of Dr. David E. Boufford with Harvard University Herbaria, one of the greatest hunters of Chinese plants. His specimens of Chinese plants are among the finest ever made, a real joy to study. As a member of the editorial board of the Flora of China completed in 2011, Dr. Boufford is also a very active researcher of Chinese plants and a most helpful friend of many Chinese plant taxonomists, including the third author of this paper. Additional specimens examined:— CHINA. Sichuan: Luding, K.Y. Lang, L.Q. Li & Y. Fei 1351 (KUN0689899, PE01108835, PE01108836), G.H. Xu 26353 (CDBI0026148, CDBI0026149); Shimian, C.C. Hsieh 41833 (IBSC0090544, PE00471029, PE00471091, SZ00092282, SZ00092301, WUK, barcode unavailable), Shimian Exped. 78-1050 (SM704604597, SM704604743); Tianquan, D.F. Chamberlain & F.T. Pu 148 (CDBI0026494), X.J. He & Q.S. Zhao 171869 (SZ00571393, SZ00571413, SZ00571414, SZ00571415), X.J. He & Q.S. Zhao 190519 (SZ00578647, SZ00578648), X.J. He & Q.S. Zhao 192292 (SZ00571336, SZ00571337, SZ00571338), K.C. Kuan & W.T. Wang 3247 (K, barcode unavailable, PE00471028, PE00471030), N. Liu ELS008 (BNU0020049), C. Pei 8268 (NAS00187295, NAS00187297, SZ00092590), D.Y. Peng 46583 (CDBI0026159, IBSC0090429), Sichuan Econ. Plant Exped. 540 (PE00471031, PE00471033), P.C. Tai & C.M. Teng 4378 (SZ00092589), H.L. Tsiang 34799 (IBK00012648, IBSC0090351, PE00471035, SZ00092274), H.L. Tsiang 35238 (NAS00187277, PE00470992, SZ00092272), Y.P. Zeng & Q.L. Huang 355 (IBSC, barcode unavailable). Conservation status:— Thalictrum bouffordii is currently known from Luding, Shimian, and Tianquan counties in the Qionglai mountains region in western Sichuan, China. The two populations in Luding and Tianquan, which we visited in 2020, consist of at least 100 individuals each. However, the size of the population in Shimian remains unknown. The conservation status of T. bouffordii should be considered as “Data Deficient (DD)” before adequate information of this species is acquired (IUCN Standards and Petitions Committee 2019). Notes:— Thalictrum bouffordii is most closely similar to T. xinningense Wang (2017: 408) (Figs. 6‒8) in habit and having clavate filaments, apically recurved styles, and sessile, profoundly ribbed and pubescent achenes, but differs by having proximally glabrous (vs. densely pubescent) stem (Figs. 3D, 7D), inflorescence a many-flowered corymbiform compound monochasium (vs. a thyrse) (Figs. 1, 2, 3B, 4B, 6, 7B, 8), abaxially pubescent (vs. glabrous) sepals (Figs. 3I, 4G, 7I), and purplish (vs. white) filaments (Figs. 3J, 4H, 7J) (also see Wang 2017, 2018a). Geographically T. bouffordii occurs in western Sichuan, whereas T. xinningense is widely distributed in southern Chongqing, northern Fujian, northern Guangdong, northern Guangxi, eastern Guizhou, southwestern Hubei, Hunan, northern Jiangxi, and southern Zhejiang (Zeng et al. 2020a); both species are thus geographically isolated from each other (Fig. 5). As mentioned above, specimens of Thalictrum bouffordii had all been previously misidentified as T. javanicum. Indeed, T. bouffordii is somewhat similar to T. javanicum in habit, but differs by having abaxially pubescent (vs. glabrous) sepals, purplish (vs. white) filaments, and pubescent (vs. glabrous) achenes (also see Backer & Bakhuizen van den Brink 1963). Moreover, as noted by Zeng et al. (2020b), previous records of the occurrence of T. javanicum in China might be a mistake caused by the misapplication of this name to the relevant Chinese populations. The descriptions of T. javanicum in the Chinese floristic works by various authors, including Anonymous (1972, 1976, 2014), Wang & Wang (1979), Wang (1985, 1991, 1993, 2000, 2003, 2004, 2018a), Lin & Zhao (1985), Li (1986), Lin (1992), Liu (2000), Fu & Zhu (2001), Luo & Luo (2008), Wang & Liu (2016), and Xie et al. (2016), have been made mainly based on Chinese specimens, not on material from the type locality, i.e. Java in Indonesia. These Chinese specimens actually belong to T. nepalense Wang (2018b: 641), T. xinningense, and our new species as well, respectively. An identification key to T. bouffordii and its closely similar species including T. javanicum, T. nepalense and T. xinningense is given below.Published as part of Zeng, You-Pai, Yuan, Qiong & Yang, Qin-Er, 2021, Thalictrum bouffordii (Ranunculaceae), a new species from the Qionglai mountains region in western Sichuan, China, pp. 18-28 in Phytotaxa 510 (1) on pages 18-26, DOI: 10.11646/phytotaxa.510.1.2, http://zenodo.org/record/542624
Thalictrum longistipitatum Y. P. Zeng, Q. Yuan & Q. E. Yang 2022, sp. nov.
No full textThalictrum longistipitatum Y. P. Zeng, Q. Yuan & Q. E. Yang, sp. nov. (Figs. 2, 9‒11). Type:— CHINA. Yunnan: Dêqên, Yunling town, on the way from Xidang spring to Yubeng village, in forests on mountain slopes, alt. 3450 m, 11 July 2021, Y.P. Zeng & Y.F. Luo 528 (holotype IBSC, barcode unavailable; isotypes KUN, PE, barcodes unavailable). Fig. 11. Diagnosis:— Thalictrum longistipitatum is closely related to T. hengduanshanense, but differs by having apically abruptly recurved (vs. straight) pedicels and shorter styles (ca. 1 mm vs. ca. 2 mm long). Description:—Perennial herbs. Roots fibrous. Stem 35‒60 cm tall, distally branched, glandular-pubescent. Leaves 2‒3-ternate; blade triangular, 5‒10 cm long, 4‒10 cm broad; leaflets broadly obovate, obliquely broadly obovate, suborbicular or broadly ovate, 0.5‒2 cm long, 0.5‒2 cm broad, herbaceous, both sides densely glandularpubescent, adaxially green and abaxially pale green, base rounded or subcordate, apex obtuse or acute, 3-lobate; lobes entire or 1‒2-crenate, apex obtuse or acute; veins submerged adaxially, raised abaxially; petioles glandular-pubescent, 0.5‒4 cm long; stipules sheath-like or free, obliquely ovate, membranous, margin entire. Inflorescence a panicle, many-branched, sub-corymbiform, glandular-pubescent. Pedicels 2‒4 cm long, apically abruptly recurved, glandularpubescent. Flowers bisexual, drooping. Sepals 4‒5, broadly elliptic, ovate or broadly ovate, 2‒3 mm long, 1.5‒2 mm broad, abaxially glandular-pubescent, whitish or tinged with pinkish; basal nerves 3‒5, simple or branched. Stamens 9‒12, 2‒3 mm long; filaments narrowly oblanceolate-linear, 1.4‒2.0 mm long, white; anthers oblong, 0.6‒0.9 mm long, ca. 0.5 mm broad, apex obtuse, white. Carpels 3‒6, ca. 2.5 mm long, glandular-pubescent, subsessile; ovary obliquely narrowly obovate, ca. 1 mm long; style ca. 1.2 mm long, apically slightly recurved; stigma lanceolate. Achenes 7‒9 mm long, densely glandular-pubescent, long stipitate; stipe 3‒6 mm long; body narrowly lunate-fusiform, shallowly ribbed, compressed; style persistent, apically recurved, ca. 0.6 mm long. Chromosome number unknown. Phenology:—Flowering from June to August; fruiting from July to September. Distribution and habitat:— Thalictrum longistipitatum is currently known only from northwestern Yunnan (Dêqên) and southeastern Xizang (Bomi, Zayu), China (Fig. 13). It grows in conifer-broadleaved forests on mountain slopes at elevations of 3100‒3450 m above sea level. Etymology:—The specific epithet of the new species, “ longistipitatum ”, refers to its impressively long stipes of achenes. Additional specimens examined (paratypes):— CHINA. Xizang: Bomi, W.Q. Fei 58 (IBSC, barcode unavailable), L. Wang, X.Q. Guo & Y.P. Zeng 3350 (IBSC, barcode unavailable); Zayu, B.S. Li, S.Z. Cheng & Z.C. Ni 7224 (PE00767246), Qinghai-Xizang Exped. 73-230 (KUN0690505, KUN0690506, PE00450030, PE00450031). Yunnan: Dêqên, Qinghai-Xizang Exped. 130 (HITBC, herb. no. 074526), L. Xie & J.F. Mao 136 (PE01569411), L. Xie & J.F. Mao 137 (PE01569412), L. Xie & J.F. Mao 138 (PE01569413). Conservation status:— Thalictrum longistipitatum is currently known only from four populations in northwestern Yunnan (Dêqên) and southeastern Xizang (Bomi, Zayu), China. Both Bomi and Dêqên populations consist of more than 100 individuals. The size of the Zayu population remains unknown. The conservation status of T. longistipitatum should therefore be considered as “Data Deficient (DD)” before adequate information of this species is acquired (IUCN Standards and Petitions Committee 2019).Published as part of Zeng, You-Pai, Yuan, Qiong & Yang, Qin-Er, 2022, Thalictrum hengduanshanense and T. longistipitatum (Ranunculaceae), two new species from southeastern Xizang and northwestern Yunnan, China, pp. 1-20 in Phytotaxa 571 (1) on pages 6-16, DOI: 10.11646/phytotaxa.571.1.1, http://zenodo.org/record/727042
FIGURE. Flowering (A) and fruiting (B) specimens of Thalictrum spiristylum (= T. atriplex) from the exact type locality, i.e. Shuicaoba in Ninglang county in northwestern Yunnan, China. A. Y.P. Zeng & Y.F. Luo 495 (IBSC). B. Y.P. Zeng 590 (IBSC). in Thalictrum spiristylum (Ranunculaceae), described from northwestern Yunnan, China, is merged with T. atriplex
No full textFIGURE. Flowering (A) and fruiting (B) specimens of Thalictrum spiristylum (= T. atriplex) from the exact type locality, i.e. Shuicaoba in Ninglang county in northwestern Yunnan, China. A. Y.P. Zeng & Y.F. Luo 495 (IBSC). B. Y.P. Zeng 590 (IBSC).Published as part of Zeng, You-Pai, Yuan, Qiong & Yang, Qin-Er, 2022, Thalictrum spiristylum (Ranunculaceae), described from northwestern Yunnan, China, is merged with T. atriplex, pp. 1-20 in Phytotaxa 538 (1) on page 6, DOI: 10.11646/phytotaxa.538.1.1, http://zenodo.org/record/633196
Epilachna brachyfoliata Zeng et Yang 1996
No full textEpilachna brachyfoliata Zeng et Yang, 1996 Specimens examined. Sichuan: Mt. Emei, 1982.viii. 2, Chen Zhenyao (1, SYSM).Published as part of Pang, Hong, Ślipiński, Adam, U, Yap Ing W & Zuo, Yongsheng, 2012, Contribution to the knowledge of Chinese Epilachna Chevrolat with descriptions of new species (Coleoptera: Coccinellidae: Epilachnini), pp. 1-37 in Zootaxa 3420 (1) on page 6, DOI: 10.11646/zootaxa.3420.1.1, http://zenodo.org/record/28196
Oedalea yangi Zeng & Lin & Yang 2022, sp. nov.
No full text6. Oedalea yangi sp. nov. (Figs 22–28) Diagnosis. Palpus brown. Antenna 1.8 times as long as head, dark brown except scape blackish; first flagellomere 12.0 times longer than wide. Hairs on mesonotum dense, acr narrowly separated from dc on anterior 3/5. Pterostigma short and wide, trapezoidal, oblique at outer margin. Halter yellow. Description. Male (Fig. 22). Body length 3.85 mm, wing length 4.0 mm. Head (Fig. 23) 0.7 mm, black with gray pollinosity. Eyes brownish black, contiguous on frons; clypeus shiny black. Hairs and bristles on head black, except lower occiput with yellow hairs. Ocellar tubercle distinct with 2 oc and 2 short posterior hairs; upper occiput with 5–6 slightly long postocular bristles slightly curved forward and inward. Antenna very long, 1.8 times as long as head, dark brown, except scape blackish; scape with black dorsal bristles; pedicel with circlet of black apical bristles; first flagellomere very elongated, 12.0 times longer than wide, short dark brown pubescent; stylus dark brown, nearly spine-like, about as long as basal width of first flagellomere. Proboscis 0.9 times as long as head height, dark brownish yellow with black hairs; palpus dark brown with black hairs. Thorax subshiny black with thin gray pollinosity, except postalar calli dark yellow. Hairs on thorax short, pale yellow, bristles brownish yellow; hairs on mesonotum uniformly short and dense; ppn absent; acr and dc multiseriate, acr narrowly separated from dc, but posteriorly not separated; 2 npl (anterior one short, posterior one long and brown), 1 psa, 1 very long prsc dc; 3 pairs of sc. Legs yellow, except hind femur deeply yellow, hind tibia blackish except base and tarsi from apex of tarsomere 1 blackish onward. Fore tibia slightly thickened, hind tibia slightly curved. Hairs and bristles on legs blackish; coxae with dark yellow and brownish yellow hairs and bristles. Fore femur slightly thickened, 1.4 times as wide as mid femur; hind femur distinctly thickened, 3.1 times as wide as mid femur, with about four rows of black ventral spine-like bristles apically (outer av and pv rather long). Wing (Fig. 24) nearly hyaline, slightly brownish above discal cell and M 1; dark brown pterostigma short and wide, trapezoidal, oblique at outer margin; veins dark brown, R 2+3 distinctly curved beneath pterostigma, M 2 complete. Squama dark yellow with dark yellow hairs. Halter yellow. Abdomen apically weakly curved downward, somewhat shiny blackish with gray pollinosity. Hypopygium narrower than pregenital segments. Hairs and bristles on abdomen dark yellow, except those on hypopygium blackish. Hypopygium distinctly narrower than pregenital segments. Terminalia (Figs 25–28): Left and right cerci (Fig. 25) digitiform, apically slightly narrowed. Basal bridge of epandrium (Fig. 25) narrow; left and right epandrial lamellae (Fig. 25) wide and not narrowed apically (dorsal view). Right epandrial lamella (Fig. 27) trapezoidal (lateral view); right surstylus 1.5 times longer than wide, apically slightly curved ventrally. Left epandrial lamella (Fig. 26) trapezoidal (lateral view); left surstylus 1.1 times longer than wide, widened apically with apical margin obliquely incised (lateral view). Hypandrium (Fig. 28) much longer than wide, apically without lateral incision. Female. Unknown. Type material. HOLOTYPE ♂, Tibet, Linzhi, Pailong, Laoqiao [30°2′33″N, 95°0′35″E, 2177 m], 2019.IV.26, Qicheng Yang (CAU). Distribution. China (Tibet). Remarks. The new species is somewhat similar to O. longicornis Frey, but may be separated from the latter by the following features: antenna 1.8 times as long as head, palpus brown to black. In O. longicornis, the antenna is 1.5 times as long as head height and the palpus is yellowish. Etymology. The species is named after the collector, Mr. Qicheng Yang (Wuhan).Published as part of Zeng, Wei, Lin, Chen & Yang, Ding, 2022, Four new species of Oedalea (Diptera, Empidoidea, Hybotidae, Oedaleinae) from China with a key to south eastern Asian species, pp. 553-567 in Zootaxa 5141 (6) on pages 563-566, DOI: 10.11646/zootaxa.5141.6.2, http://zenodo.org/record/659800
Thalictrum nanhuaense Y. P. Zeng, Q. Yuan & Q. E. Yang 2021, sp. nov.
No full textThalictrum nanhuaense Y.P. Zeng, Q. Yuan & Q.E. Yang, sp. nov. , Figs. 1, 2. Type:— CHINA. Yunnan province: Nanhua county, Majie town, Zhongcun village, 24°54′23.77″N, 100°52′12.01″E, in thickets on slopes, 1600 m, 6 August 2020, Y. P . Zeng & Q. L. Huang 460 (holotype IBSC; isotypes IBSC, KUN, PE). Description:—Perennial herbs. Roots succulent, tuberose. Stem to 20 cm tall, branched, proximally sparsely pubescent, distally glabrous. Leaves 2‒3-ternate; blade triangular, 3‒8 cm long and broad; leaflets orbicular or broadly ovate, 1‒2 cm long and broad, herbaceous, glabrous on both surfaces, green on adaxial surface, pale green on abaxial surface, base rounded or subcordate, apex obtuse, 3-lobate; lobes entire or inconspicuously 1‒3-crenate; veins flat adaxially, raised abaxially; petiole slender, 3‒7 cm long; stipule membranous, inconspicuous. Inflorescence compound monochasia, corymbiform. Pedicel slender, 1‒2 cm long. Flowers bisexual, erect. Sepals 4‒6, elliptic, ca. 4 mm long, ca. 3 mm broad, white. Stamens 11‒15, ca. 3 mm long; filaments filiform, ca. 2 mm long, white; anthers narrowly oblong, ca. 1 mm long, apex obtuse, pale yellow. Carpels 11‒18, sessile, ca. 2 mm long, glabrous; ovary narrowly fusiform, nearly smooth, ca. 1.5 mm long; style straight, ca. 0.6 mm long; stigma inconspicuous, point-like. Achenes sessile, ca. 3 mm long, glabrous; body subulate-terete, inconspicuously ribbed; style persistent. Distribution and habitat: Thalictrum nanhuaense is currently known only from its type locality, i.e. Nanhua county in central Yunnan province, China (Fig. 3). It grows in northern subtropical thickets dominated by Dalbergia yunnanensis Franchet (1890: 187) on slopes at an altitude of 1600 m above sea level. Phenology:—Flowering from July to August; fruiting from August to September. Etymology:—The specific epithet refers to the type locality of the new species, i.e. Nanhua county in central Yunnan province, China. Additional specimen examined:— CHINA. Yunnan: Nanhua county, Majie town, Zhongcun village, 24°54′23.77″N, 100°52′12.01″E, X. Gong et al. KIBGX001 B08 (IBSC). Conservation status:— Thalictrum nanhuaense is currently known only from its type locality in Nanhua county in central Yunnan province, China. There are no more than 200 individuals in this population which is situated very closely to farmlands (less than 200 m) and disturbed heavily by grazing and roadbuilding activities. This population is located in the northernmost region of the Ailao Shan, an area not yet well botanized, and we do not know if more populations of this new species can be discovered in the future. The distribution and other information of this species are far from adequate to make a precise and accurate assessment of its risk of threat and endangerment. The conservation status of this species, therefore, should be considered as “Data Deficient (DD)” and a further investigation on this species is required (IUCN Standards and Petitions Committee 2019). Notes:—From a morphological perspective, Thalictrum nanhuaense is similar to T. fargesii (Figs. 4, 5) in habit and having larger sepals up to 4 mm long and persistent at anthesis and straight styles, but differs by its succulent and tuberose (vs. fibrous and slender) roots, filiform (vs. clavate) filaments, point-like (vs. oblong and narrowly winged) stigmas, and subulate-terete (vs. lunate-fusiform) achenes. Geographically, T. fargesii is widely distributed in Anhui, Chongqing, Fujian, Gansu, Guizhou, Henan, Hubei, Hunan, Jiangxi, Shaanxi, Sichuan, and Zhejiang provinces, China (Wang & Wang 1979, Fu & Zhu 2001, Li et al. 2016, Wang 2018a). Our new species is currently known only from its type locality, i.e. Nanhua county in central Yunnan province, China (Fig. 3). A detailed comparison between the two species is given in Table 1.Published as part of Zeng, You-Pai, Yuan, Qiong & Yang, Qin-Er, 2021, Thalictrum nanhuaense (Ranunculaceae), a new species from central Yunnan, China, pp. 121-128 in Phytotaxa 479 (1) on pages 121-127, DOI: 10.11646/phytotaxa.479.1.10, http://zenodo.org/record/541329
Tephrochlamys qinghaiensis Zeng & Xu & Yang 2023, sp. nov.
No full text<i>Tephrochlamys qinghaiensis</i> sp. nov. <p>(Figs. 3–7, 8–13)</p> <p> <b>Diagnosis.</b> Scutellum dark brown with brownish yellow posterior margin. Abdomen dark brown except apical margin of tergites 1–5 blackish and hypopygium partly dark yellow. Anterior postsutural dorsocentral bristle shorter than posterior two bristles. First dorsocentral bristle closer to 2 nd than to suture, with six rows of acrostichal bristles between them.</p> <p> <b>Description. Male.</b> Body length 7.0– 7.2 mm, wing length 7.2–7.4 mm. [Holotype J, body length 7.2 mm, wing length 7.4 mm]</p> <p>Head (Fig. 4–6) brownish yellow with yellowish pollen; ocellar triangle blackish, occiput more or less blackish at middle. Eyes reddish brown. Hairs and bristles on head black, hairs rather short. 2 orbital bristles much shorter than ocellar bristles, anterior one almost as long as posterior one; 2 long vertical bristles. 2 very long ocellar bristles nearly as long as vertical bristles, 2 short postocellar bristles crossed apically and distinctly shorter than ocellar bristles. Antenna brownish yellow except first flagellomere dark yellow, almost as long as head height; scape with black dorsal hairs at tip; pedicel with numerous short scattered bristles, and with circlet of black hairs, 1 black dorsal bristle, several black ventral bristles at tip. First flagellomere long and oval, 1.2 times (exact ratios present in both the holotype and paratypes) longer than wide; arista dark brown with brownish yellow basal segment, short plumose, 3.1 times (exact ratios present in both the holotype and paratypes) longer than first flagellomere. Proboscis brownish yellow with brown bristles; palpus dark yellow with black hairs and 3 black ventral bristles.</p> <p> Thorax (Fig. 6) dark brown with yellowish pollen; scutellum brown. Hairs and bristles on thorax black. 1 humeral bristle and a few sparse bristles on humerus; 3 postsutural dorsocentral bristles, anterior one shorter than posterior two, first dorsocentral bristle closer to 2 nd than to suture, with six rows of acrostichal bristles between them; 1 presutural bristle; 2 notoplerual bristles; 1 intra-alar bristle, 1 supra-alar bristle, 1 postalar bristle. Scutellum rounded apically, with 2 pairs of scutellar bristles; katepisternum and propleuron each with 1 bristle.</p> <p>Legs mostly brownish yellow; fore coxa yellow, mid and hind coxae dark brownish yellow; fore femur dark brown and hind femur brown except extreme base and apex more or less dark yellow; all tibiae brown, but widely brownish yellow at middle; all tarsomeres 4–5 dark brown. Hairs and bristles on legs black. All femora slightly thickened. Fore femur with an irregular row of 6–8 long posterodorsal bristles and a row of 6–7 long posteroventral bristles. Fore and hind tibiae each with 1 slightly short thick ventral apical bristle and 1 slightly short thick dorsal apical bristle. Mid tibia with 1 long thick ventral apical bristle and 1 short dorsal apical bristle.</p> <p> Wing (Fig. 7) nearly hyaline, slightly brownish, veins brown except anterior veins brownish yellow; veins r-m and dm-cu with brownish spots not obvious; posterior cell with brownish apical stripes not obvious; R 2+3 and R 4+5 distinctly bent, A 2 reaching margin; Costa with costal spines near subcostal break. Squama and axillary lobe nearly hyaline with brown hairs. Halteres pale yellow with brownish yellow base.</p> <p>Abdomen dark brown with yellowish pollen except apical margin of tergites 1–5 black and hypopygium mostly dark brown and partly dark yellow. Hairs and bristles on abdomen black; tergites 1–5 with long thick bristles at posterior margin and sternites 2–5 with short thick bristles at posterior margin.</p> <p>Male genitalia (Fig. 8–13): Cercus symmetrical and large, apically rounded, pale yellow, 1.9 times longer than basal wide. Epandrium sparsely with black thick bristles different in length. Hypandrium symmetrical. Surstylus almost triangular in lateral view, 1.8 times longer than wide, apically with distinctly thickened obtuse process. Distiphallus short.</p> <p> <b>Female.</b> Unknown.</p> <p> <b>Type material.</b> Holotype J, Qinghai, Huzhu, Baimuxia, Jianchazhan, [37°0'7"N, 102°7'15"E], 3060 m, 2021. VI. 30, Wei Zeng (CAU). Paratypes 3J, same data as holotype (CAU).</p> <p> <b>Distribution.</b> China (Qinghai).</p> <p> <b>Remarks.</b> The new species is similar to <i>T. laeta</i> Meigen, but may be separated from the latter by the following features: (1) body longer (body length 7.0– 7.2 mm); (2) six rows of acrostichal bristles. In <i>T. laeta</i>, the body is shorter (3.5–4.0 mm), and four rows of acrostichal bristles are present between the postsutural dorsocentral bristles.</p> <p> <b>Etymology.</b> The specific name refers to the type locality Qinghai.</p>Published as part of <i>Zeng, Wei, Xu, Xingnong & Yang, Ding, 2023, Subfamily Heteromyzinae newly recorded from China with description of one new species (Diptera: Heleomyzidae), pp. 293-298 in Zootaxa 5264 (2)</i> on pages 294-295, DOI: 10.11646/zootaxa.5264.2.9, <a href="http://zenodo.org/record/7836558">http://zenodo.org/record/7836558</a>
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