144,602 research outputs found
Macrobrachium tenuipes Zhu & Chen & Zheng & Chen & Guo 2020, sp. nov.
No full textMacrobrachium tenuipes sp. nov. urn:lsid:zoobank.org:act: 8E619D49-C101-44C5-8205-BAA3097E0CB2Published as part of Zhu, Xiao-Ping, Chen, Qing-Hua, Zheng, Xiao-Zhuang, Chen, Wen-Jian & Guo, Zhao-Liang, 2020, Macrobrachium tenuipes, a new stygophile freshwater prawn specie (Crustacea: Caridea: Palaemonidae) from a karst cave of Guangxi, southwestern China, pp. 511-529 in Zootaxa 4759 (4) on page 512, DOI: 10.11646/zootaxa.4759.4.3, http://zenodo.org/record/374102
Demonax fugongensis Guo & Chen 2005
No full textDemonax fugongensis Guo & Chen, 2005: 408, 411, figs. 6, 7, 9 (Figs. 31a, b) Type locality: China, Yunnan, Gongshan County, Cikai, Niulangdang. (According to the label, the locality is Cikai, which is in Gongshan County, not Fugong). Gender: female. Altitude: 1500m. Date collected: 1979. VI.22 Collector: Fugong expedition team.Published as part of Li, Zhu & Chen, Li, 2020, Primary types of longhorned beetles (Coleoptera, Cerambycidae, Vesperidae and Disteniidae) of Southwest University (SWU), pp. 25-46 in Zootaxa 4718 (1) on page 34, DOI: 10.11646/zootaxa.4718.1.2, http://zenodo.org/record/360220
Xylotrechus quattuordecimmaculatus Guo & Chen 2002
No full textXylotrechus quattuordecimmaculatus Guo & Chen, 2002: 254, 256, fig. 1. (Figs. 38a, b) Type locality: China, Yunnan, Yongping County, Jinhe. Gender: male. Altitude: 2000m. Date collected: 1980.VI.9. Collector: Yongping expedition team. Paratypes: 1 female, Yunnan, 1980.VIII.17, Sheng-Yuan LI leg. (SWU)Published as part of Li, Zhu & Chen, Li, 2020, Primary types of longhorned beetles (Coleoptera, Cerambycidae, Vesperidae and Disteniidae) of Southwest University (SWU), pp. 25-46 in Zootaxa 4718 (1) on pages 36-37, DOI: 10.11646/zootaxa.4718.1.2, http://zenodo.org/record/360220
Demonax rufus Guo & Chen 2005
No full textDemonax rufus Guo & Chen, 2005: 407, 411 (Figs. 33a, b) Type locality: China, Yunnan, Longjiang County, Mengliu. Gender: female. Altitude: 1700m. Date collected: 1976.VI.15. Collector: Longkou expedition team Paratype: 1 male, Yunnan, Cangyuan County, 1780, 1980.V.1, Yan-Bao LI leg (SWU).Published as part of Li, Zhu & Chen, Li, 2020, Primary types of longhorned beetles (Coleoptera, Cerambycidae, Vesperidae and Disteniidae) of Southwest University (SWU), pp. 25-46 in Zootaxa 4718 (1) on page 34, DOI: 10.11646/zootaxa.4718.1.2, http://zenodo.org/record/360220
Chen Bi-sheng & Yang Guo-zhen, Chen Jia-geng zhuan
No full textChing-Fatt Yong. Chen Bi-sheng & Yang Guo-zhen, Chen Jia-geng zhuan. In: Archipel, volume 27, 1984. pp. 201-202
Chen Bi-sheng & Yang Guo-zhen, Chen Jia-geng zhuan
No full textChing-Fatt Yong. Chen Bi-sheng & Yang Guo-zhen, Chen Jia-geng zhuan. In: Archipel, volume 27, 1984. pp. 201-202
Experientiality and Reversibility of the Aspectual Morpheme Guo in Mandarin Chinese: Temporal and Atemporal Perspectives
No full text[[abstract]] This paper argues for the property of reversibility toward the interpretation of the aspectual guo in Mandarin Chinese. After thorough examination of studies on its meaning in the literature, I point out that traditional analyses stress too heavily on the experientiality, while recent studies- such as Hsiao (2003), Pan and Lee (2004), Lin (2007), and Wu (2008)- focus too much on the resultant state entailed by guo to derive its meaning of discontinuity. I propose that experientiality or discontinuity still serves as the inherent meaning of guo, yet the resultant state in many events further encodes an extended meaning of reversibility which relates the temporal/physical properties of a discontinued event back to its pre-existing state.The semantics of guo based on this hypothesis is arguably a temporal as well as an atemporal notion. This account of guo is possible provided that the theory of time based on the cognitive grammar as proposed in Ahrens and Huang (2002) is adopted as the framework: in their theory the concept of time is conceived as a moving point over a landscape, and the ego facing the past is attached to this point in relation to the event. Under this assumption, the meaning of guo functions to discontinue the time and provides
the ego a viewpoint to conceptualize the reversibility property
Macrobrachium dongaoensis Chen & Chen & Guo 2018, sp. nov.
No full textMacrobrachium dongaoensis sp. nov. (Figs. 7–9) Material examined. Holotype. Adult male (FU, 17–06–23–01), tl: 79.0 mm, cl: 19.5 mm, rl: 12.0 mm; Dong’ao island, Zhuhai City, Guangdong Province (E 113°43'09", N 22°01'08", al. 22.4 m, stn.7), 26 Jun 2017, coll. Z. L. Guo, W. J. Chen. Paratypes. 1 male (FU, 17–06–23–02), tl: 73.7 mm, cl: 19.3 mm, rl: 10.5 mm; 1 ovigerous female (FU, 17– 06–23–03), tl: 67.0 mm, cl: 18.0 mm, rl: 12.0 mm, data same as holotype. Diagnosis. Rl is about 0.54–0.67 of cl, nearly straight, falling slightly short of anterior end of antennal scale, dorsal margin with 10–13 teeth, 4 or 5 (usually 4) teeth behind orbit, equally spaced, ventral margin with 1–3 teeth. Cephalothorax and abdomen smooth, without microspinules. Second pereiopods shorter than tl in both sexes, subequal in length in male, the right slightly longer, but equal in female; merus is about 1.1 times as long as ischium; carpus is 4.4–5.4 times as long as width, about 1.1–1.4 times as long as merus and almost same length of palm; palm is not inflated, 4.3–4.9 times as long as wide; the finger 0.69–0.78 times as long as palm, fingers without gape when crossed, the fixed finger with 2 teeth at proximal, moveable finger with 2 proximal teeth; all segments are covered with numerous spines particularly on dorsal and lateral surfaces. Eggs small, 0.33–0.42 X 0.37–0.44 mm in diameter. Description. Rostrum. (Fig. 7a) Rl is about 0.54–0.67 of cl, nearly straight, reaching to or slightly beyond end of scaphocerite, dorsal margin with 10–13 teeth, 4 or 5 (usually 4) teeth behind orbit, equally spaced, ventral margin with 1–3 teeth. Carapace. (Fig. 7a) Glabrous; antennal spine well developed; hepatic spine much smaller than antennal spine, situated backwardly, distinctly below level of antennal spine. Antennule. (Fig. 7a) with sharp stylocerite, reaching one–third basal segment of antennular peduncle; anterior margin of basal segment distinctly convex; second segment about 0.45 times as long as basal segment, about 0.81 time as long as distal segment. All segments with submarginal plumose setae. Antenna. (Fig. 7a) with scaphocerite large, rectangular, 3.4 times as long as wide, outer margin almost straight, ended with a strong spine, overreached by lamella. Third maxilliped with robust endopod, ischiomerus slightly bow-shaped, with rows of long simple setae on distal inner and outer margins; carpus about 0.75 times length of ischiomerus, with row of long simple setae on inner margin and sparse row of simple setae on outer margin; distal segment about 0.81 times penultimate segment, with long simple setae on inner margin; exopod reach distal end of ischiomerus, with plumose setae distally; basal with well developed oval lateral plate, two arthrobranchs, one rudimentary, obscured by the larger. First pereiopod. (Fig. 7b) Slender, overreaching antennal scale by carpus, carpus 1.7–1.9 times as long as chela; fingers as long as palm. Second pereiopod. (Fig. 7c, d) Slightly shorter than the tl in both sexes, subequal in length in male, the right slightly larger, extending beyond antennal scale by 1/2 carpus, equal in female; the shape and segment ratios of the left and the right are similar; merus is about 1.1 times as long as ischium; carpus is 4.4–5.4 times as long as width, about 1.1–1.4 times as long as merus and almost same length of palm; palm is not inflated, 4.3–4.9 times as long as wide; the finger 0.69–0.78 times as long as palm, fingers without gape when crossed, the fixed finger with 2 teeth at proximal, moveable finger with 2 proximal teeth; all segments are covered with numerous spines particularly on dorsal and lateral surfaces. Third pereiopod. (Fig. 7e) Extending to end of third antennular peduncle segment by distal propodus; propodus 2.8–3.0 times as long as dactylus, with 5–7 spines on posterior margin, dactylus about 5.0 times as long as width, terminating in a claw. Fifth pereiopod. (Fig. 7f) Extending to end of third antennular peduncle segment; propodus 3.4–4.3 times as long as dactylus, with 4 spines on posterior margin, dactylus about 5.3 times as long as width, terminating in a small claw. First pleopod of male with endopod of about half of exopod, slightly concave at inner margin, top rounded, without appendix interna. Second pleopod with well developed appendix masculina, reaching middle of endopod, about twice as long as appendix interna with numerous stiff setae. Abdomen glabrous; pleura of first three somites broadly rounded, pleura of somites 4 and 5 also rounded, but with almost rectangular posterolateral angle; sixth somite 1.2–1.4 times as long as fifth somite, about 0.40–0.43 times as long as telson. Telson. (Fig. 7g) Smooth, about 0.62–0.72 times of cl, longer than sixth abdominal segment; dorsal surface with 2 pairs of stout movable spines; posterior margin tapers regularly to a sharp point with 2 pairs of posterior spines; numerous setae present between inner spines. Uropodal diaeresis with a spine, shorter than outer angle. Eggs small, 0.33–0.42 X 0.37–0.44 mm in diameter. Live coloration. The live specimens (Fig. 8a, b) are light green and translucent, uropod with numerous small reddish spots uropods; all segments of second pereiopods is brown, with one dark rings on outer posterior surface on merus and two dark rings on carpus, the palm have two longitudinal dark stripes near margins; first, third, fourth and fifth pereiopods transparent; eggs green (Fig. 8b). Etymology. The new species is named after its distribution area, Dong’ao Island. Remarks. Macrobrachium dongaoensis superficially resembles M. inflatum Liang & Yan, 1985 in having similar ratios of various segments of the second pereiopods and breeding female bears smaller sized numerous eggs. However, it can be distinguished from M. inflatum by its shorter rostrum (extending to end of third antennular peduncle segment versus beyond antennal scale; rl<cl versus rl=cl); the male second pereiopods are subequal (versus equal), the right slightly longer, the palm is not inflated (versus inflated) and 4.3–4.9 times (versus 3.5–3.6 times) as long as broad, the merus is distinctly longer than the ischium (versus shorter than the ischium), without a gape present when closed (versus with a distinct gape present). M. dongaoensis morphologically resembles M. heterorhynchos Guo & He, 2008, which was originally described also from Guangdong Province. It can be distinguished from M. heterorhynchos by the shorter (reaching to end of scphocerite versus one–third distal 1/3 of rostrum extending beyond scaphocerite) and non-sexually dimorphic rostrum (versus sexually dimorphic); the carpus of male second pereiopods is as long as palm (versus distinctly longer than the palm). M. Dongaoensis is also close to M. nipponense (De Haan, 1849). It can be distinguished from latter by characters of the male second pereopods. The second pereiopods of M. Dongaoensis are distinctly shorter than those of M. nipponense; the carpus is as long as palm (versus distinctly longer than the palm). and the finger without setae on cutting edge (versus covered with long dense setae). Habitat. The type specimens were collected from Dong’ao Island, Zhuhai City, Guangdong Province (E 113°43'09", N 22°01'08", al. 22.4 m). This stream (Fig, 9) is biggest in Dong’ao Island, which with the width of about 4 m, deepth about 0.5–0.8 m, with beds of sand and gravel patches between large boulders, and with full of bank vegetation and spirogyras. It is a moderately fast stream, flows into the sea. It is found together with Caridina serrata. Distribution. Only known from the type locality in Guangdong Province, southern China.Published as part of Chen, Qing-Hua, Chen, Wen-Jian & Guo, Zhao-Liang, 2018, Caridean prawn (Crustacea, Decapoda) from Dong'ao Island, Guangdong, China, pp. 315-328 in Zootaxa 4399 (3) on pages 323-327, DOI: 10.11646/zootaxa.4399.3.2, http://zenodo.org/record/120666
Ye di de he bing yi ji jie bing yan jiu
No full textChen, Guo = 液滴的合併以及結冰研究 / 陳果.Thesis Ph.D. Chinese University of Hong Kong 2014.Includes bibliographical references (leaves 58-63).Abstracts also in Chinese.Title from PDF title page (viewed on 13, December, 2016).Chen, Guo
Oncholaimus minor Chen & Guo 2014, sp. n.
No full textOncholaimus minor sp. n. (Figure 2, Table 3) Type material. Five males and one female from station XMHC L1 were collected in October 2011. Holotype, ♂ 1 on slide number XMHC20111015 L108. Paratypes: ♂ 2 on slide number XMHC 20111015 L119, ♂ 3 on slide number XMHC 20111015 L125, ♂ 4 on slide number XMHC 20111015 L123, ♂ 5 on slide number XMHC 20111015 L118, ♀ 1 on slide number XMHC 20111015 L110. Type locality and habitat. Intertidal sandy sediment at Huangcuo coast, Xiamen. Characteristics of surface sediment: see Table 1. Etymology. This species is named for its smaller body size. Description. Body length 1541–2002 µm; maximum diameter 27–49 µm. Cuticle smooth. Head diameter 20–26 µm, continuous with body contour. Six lips with six small labial papillae. Ten cephalic setae in one ring, six 7–8 µm and four 5–6 µm. Deep barrel-shaped buccal cavity with strong cuticular walls, one larger left subventral tooth and two smaller right subventral and dorsal teeth. Amphids cup-shaped with shallow fovea, 0.27–0.43 cbd and situated at 14–18 µm from anterior end. Pharynx long, cylindrical and muscular, 0.19–0.21 times body length, surrounded by nerve ring about mid-way along its length. Excretory pore opening ventrally 52–68 µm from anterior end. Nerve ring 145–199 µm from anterior end. Pharynx length 310–390 µm. Tail shape displays sexual dimorphism. Male: tail conico-cylindrical, stout and short, bearing two lateral setae and three terminal setae, obviously bent in middle. Cloacal opening surrounded by 12 sturdy genital setae arranged in single whorl. Spicules short and straight, 24–25 µm (0.9–1.4 abd), with distal half swollen and pointed tip. No gubernaculum. Several papillae present along the cloacal edge. Spinneret small, terminal. Female: Tail much longer than that of male (93 µm vs. 45–56 µm), slightly ventrally curved. Vulva at 70.2% of body length. Demanian system situated on the right side of the intestine. Spinneret as in male. Diagnosis and discussion. Oncholaimus minor sp. n. is characterized by its relatively smaller body size and sexual dimorphism in tail shape (the male tail is short and stout, c’ = 2.0–2.9, bent in middle, while the female tail is only slightly curved, c’ = 3.5). The new species most closely resembles O. manilius Gerlach, 1957, O. martini Wieser, 1959 and O. brachycercus de Man, 1889 in the similar shape of male tail, whereas the female tail shape of the new species is rather different from these three species. Besides, O. minor sp. n. can further distinguished from these three species by the smaller body length, lower b ratio, shorter spicule length and more slender male tail; it also has fewer circumanal genital setae.Published as part of Chen, Yuzhen & Guo, Yuqing, 2014, Three new species of free-living marine nematodes from East China Sea, pp. 117-126 in Zootaxa 3841 (1) on pages 121-123, DOI: 10.11646/zootaxa.3841.1.6, http://zenodo.org/record/492819
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