120,957 research outputs found
On the Lebesgue constant for the Xu interpolation formula
No full textIn the paper [Y. Xu, Lagrange interpolation on Chebyshev points of two
variables, J. Approx. Theory 87 (1996), 220-238], the author introduced a set of Chebyshev-like points for polynomial interpolation (by a certain subspace of polynomials) in the square [-1,1]^2 , and derived a compact form of the corresponding Lagrange interpolation formula. In [L. Bos, M. Caliari, S. De Marchi, M. Vianello, A numerical study of the Xu polynomial interpolation formula in two variables, Computing 76 (2006), 311-324], we gave an efficient implementation of the Xu interpolation formula and we studied numerically its Lebesgue constant, giving evidence that it grows like O((log n)^2 ), n being the degree. The aim of the present paper is to provide an analytic proof to show that the Lebesgue constant does have this order of growth
Rhytidhysteron subrufulum X. - L. Xu & C. - L. Yang, sp. nov.
No full text<i>Rhytidhysteron subrufulum</i> X.-L. Xu & C.-L. Yang, sp. nov. (Fig. 5) <p> HOLOTYPE. — <b>China</b>. Sichuan Province, Chengdu City, Wenjiang District, 30°42’18.89”N, 103°51’30.42”E, alt. 545 m, on dead twigs of <i>Osmanthus fragrans</i> (Thunb.) Loureiro (Oleaceae), 12.X.2019, collected by C.-L.Yang, <i>YCL201910001</i> (holo-, SICAU 19-0010), ex-type living culture (SICAUCC 19-0011).</p> <p> ETYMOLOGY. — The specific epithet refers to the allied species of <i>R. rufulum</i>.</p> <p>INDEX FUNGORUM. — IF557216.</p> <p> ADDITIONAL SPECIMENS EXAMINED. — <b>China</b>. Sichuan Province, Zizhong County, 29°46’28.29”N, 104°49’19.66”E, alt. 316 m, on dead twigs of <i>Citrus reticulata</i> Blanco (Rutaceae), 8.III.2019, collected by X.-L. Xu & C.-L. Yang, <i>YCL201903011</i> (SICAU 19-0009), living culture (SICAUCC 19-0010); 29°46’22.97”N, 104°49’12.20”E, alt. 303 m, on dead twigs of <i>Broussonetia papyrifera</i> (Linnaeus) L’Heritier ex Ventenat (Moraceae), 19.X.2019, collected by X.-L. Xu and C.-L. Yang, <i>XXL201910004</i> (SICAU 20-0003), living culture (SICAUCC 20-0003); Chongzhou City, 30°33’25.37”N, 103°39’30.67”E, alt. 511 m, on dead twigs of <i>Robinia pseudoacacia</i> L. (Fabaceae), 29.XI.2019, collected by C.-L. Yang, <i>XXL201911012</i> (SICAU 20-0006), living culture (SICAUCC 20-0006); on dead twigs of <i>Carya illinoinensis</i> (Wangenheim) K. Koch (Juglandaceae), 18.IX.2020, collected by X.-L. Xu, <i>XXL202009001</i> (SICAU 20- 0011), living culture (SICAUCC 20-0011); Chengdu City, Wenjiang District, 30°42’18.89”N, 103°51’30.42”E, alt. 545 m, on dead wood of <i>Chimonanthus praecox</i> (L.) Link (Calycanthaceae), 6.XI.2020, collected by X.-L. Xu, <i>XXL202011001</i> (SICAU 22-0001), living culture (SICAUCC 22-0001).</p> <p> ADDITIONAL GENBANK NUMBER. — SICAUCC 19-0011: <i>tub</i> 2, MT075597; <i>rpb</i> 2, MT027614. SICAUCC 19-0010: <i>tub</i> 2, MT075596; <i>rpb</i> 2, MT027613. SICAUCC 20-0003: <i>tub</i> 2, MT075588; <i>rpb</i> 2, MT075604. SICAUCC 20-0006: <i>tub</i> 2, MT075591; <i>rpb</i> 2, MT075607. SICAUCC 20-0011: <i>tub</i> 2, MW219742; <i>rpb</i> 2, MW219741. SICAUCC 22-0001: <i>tub</i> 2, OM371084; <i>rpb</i> 2, OM371083.</p> DESCRIPTION <p>Saprobic on decaying woody branches and twigs.</p> <i>Sexual morphology</i> <p> Ascomata 900-2870 µm long × 900-1720 wide × 470-660 high (<i>x</i> = 1909 × 1220 × 546 µm, n = 20), apothecioid, carbonaceous, scattered to gregarious, black, labiates and elliptic or irregular in shape, perpendicularly striate along the long axis, reddish brown to black on the disc. Exciple 36-83 µm wide (<i>x =</i> 62, n = 15), two-layered, outer layer comprising thick- walled, brown to hyaline cells of textura angularis and textura globulosa, inner layer comprising thinwalled, light brown to hyaline cells of textura angularis and textura prismatica. Hamathecium composed of 1.6-2.4 µm wide at the base, 2.5-4.0 µm wide at swollen tips (n = 20), dense, septate, pseudoparaphyses, branched and forming brown epithecium above the asci, slightly swollen at the apex, hymenium turns blue in Melzer’s reagent, J +. Asci 183- 214 × 13-20 µm (<i>x</i> = 202 × 16 µm, n = 15), (5-)8-spored, bitunicate, clavate to cylindrical, with short pedicel and apically rounded with an ocular chamber, J- in Melzer’s reagent. Ascospores 29-41 × 10-15 µm (<i>x</i> = 33 × 13 µm, n = 30), ellipsoidal or fusiform, straight or slightly curved, slightly pointed at both ends, partially overlapping, uniseriate, (2-)3-septate, constricted septum, light brown to dark brown, without a mucilaginous sheath.</p> <i>Asexual morphology</i> <p>Undetermined.</p> <i>Culture characteristics</i> <p>Ascospores germinating on PDA within 24 hours and germ tubes produced from any cell. Colonies growing on PDA reach 4 cm diam after five days at 25°C, flat, circular, initially white, gradually becoming yellow to gray.</p> NOTES <p> Morphological comparison shows <i>R. subrufulum</i> X.-L. Xu & C.-L. Yang, sp. nov. with similar perpendicular striations as typical <i>R. rufulum</i> and <i>R. esperanzae</i>. But the exciple of <i>R. subrufulum</i> X.-L. Xu & C.-L. Yang, sp. nov. (36-83 µm) is thinner than <i>R. rufulum</i> (75-228 µm) and <i>R. esperanzae</i> (60-220 µm), and the asci are wider than <i>R. rufulum</i> (16 µm vs 13.5 µm), and shorter than <i>R. esperanzae</i> (183-214 µm vs 250-270 µm). Furthermore, the asci are (5-)8-spored in <i>R. subrufulum</i> X.-L. Xu & C.-L. Yang, sp. nov., 8-spored in <i>R. rufulum</i> and undescribed in <i>R. esperanzae</i>. And ascospores of <i>R. subrufulum</i> X.-L. Xu & C.-L. Yang, sp. nov. are larger than <i>R. rufulum</i>, but smaller than <i>R. esperanzae</i> (33 × 13 µm vs 31 × 11 µm vs 45 <i>×</i> 17 µm) (Thambugala <i>et al</i>. 2016; Cobos-Villagrán <i>et al</i>. 2021). It is worth mentioning that the specimen SICAU 19-0009 had a large number of fusiform and 1-septate ascospores obviously pointed at both ends, but those ascospores did not germinate at room temperature for a week. The LSU and SSU DNA sequences between <i>R. subrufulum</i> X.-L. Xu & C.-L. Yang, sp. nov. (SICAUCC 19-0011) and <i>R. rufulum</i> (MFLUCC 14-0577, MFLUCC 12-0013) are almost identical, but there are sufficient basepair differences in <i>tef-</i> 1 <i>α</i> (1.66 %, MFLUCC 14-0577) (no data, MFLUCC 12-0013) and ITS (1.47 %, MFLUCC 14-0577) (1.52 %, MFLUCC 12-0013) gene. In the comparison of <i>tef-</i> 1 <i>α</i> sequence, it shows 1.68 % differences between <i>R. subrufulum</i> X.-L. Xu & C.-L. Yang, sp. nov. and <i>R. esperanzae</i>, whereas no data on ITS sequence. With these morphological and DNA sequence differences, this species is identified as a new species named <i>R. subrufulum</i> X.-L. Xu & C.-L. Yang, sp. nov. A table summarizing major morphological differences among <i>Rhytidhysteron</i> species is shown in Table 2.</p>Published as part of <i>Xu, Xiu-Lan, Xiao, Qian-Gang, Yang, Chun-Lin, Jeewon, Rajesh & Liu, Ying-Gao, 2022, Multigene phylogenetic support for novel Rhytidhysteron Speg. species (Hysteriaceae) from Sichuan Province, China, pp. 63-79 in Cryptogamie, Mycologie 20 (3)</i> on page 72, DOI: 10.5252/cryptogamie-mycologie2022v43a3, <a href="http://zenodo.org/record/7815283">http://zenodo.org/record/7815283</a>
Lonchodryinus bimaculatus Xu & He 1994
No full text29. Lonchodryinus bimaculatus Xu & He, 1994 ** Lonchodryinus bimaculatus Xu & He, 1994: 128. Material examined. Holotype of L. bimaculatus: Ƥ, China, Sichuan, Mt. Emeisahan, 10.VIII. 1980, Junhua He coll. [ZJUC]. Shaanxi: Liuba, 1742 m, 22.VII. 2004, Qiong Wu coll., 1 3 [ZJUC]. Hosts. Unknown. Distribution. Oriental. China: Sichuan (Xu & He 1994; He & Xu 2002), Shaanxi (new record).Published as part of Xu, Zaifu, Olmi, Massimo, Guglielmino, Adalgisa & Chen, Huayan, 2012, Checklist of Dryinidae (Hymenoptera) from Shaanxi Province, China, with descriptions of two new species, pp. 1-16 in Zootaxa 3164 on page 11, DOI: 10.5281/zenodo.21220
Lonchodryinus niger He & Xu 2002
No full text30. Lonchodryinus niger He & Xu, 2002 Lonchodryinus niger He & Xu, 2002: 406. Material examined. Holotype (3) and paratype (1 3) of L. niger: China, Shaanxi, Huoditang, 5.V. 1998, Yun Ma coll. [ZJUC]. One paratype: Henan, Luanchuan, 12.VII. 1996, Ping Cai coll., 1 3 [ZJUC]. Hosts. Unknown. Distribution. Oriental. China: Henan, Shaanxi (Xu & He 2002).Published as part of Xu, Zaifu, Olmi, Massimo, Guglielmino, Adalgisa & Chen, Huayan, 2012, Checklist of Dryinidae (Hymenoptera) from Shaanxi Province, China, with descriptions of two new species, pp. 1-16 in Zootaxa 3164 on page 11, DOI: 10.5281/zenodo.21220
Tricentrus cassiae Yuan & Xu in Yuan, Fan, Cui & Xu 1997
No full textTricentrus cassiae Yuan & Xu in Yuan, Fan, Cui & Xu, 1997:99 (correct original spelling) also spelled as Tricentrus cassae Yuan, Fan, Cui & Xu, 1997:103 and Tricentrus caesalpiniae Yuan, Fan, Cui & Xu, 1997:91 (incorrect original spellings) Note: Acting as First Reviser, Yuan & Chou, 2002:539 implicitly fixed the correct original spelling by adopting only it as valid (ICZN article 24.2.4).Published as part of Dmitriev, Dmitry A. & Deitz, Lewis L., 2017, Nomenclatural changes in the family Membracidae (Hemiptera, Auchenorrhyncha, Membracoidea) in Zootaxa 4365 (1), DOI: 10.11646/zootaxa.4365.1.7, http://zenodo.org/record/112531
Tricentrus dorsocameloideus Yuan & Xu in Yuan, Fan, Cui & Xu 1997
No full textTricentrus dorsocameloideus Yuan & Xu in Yuan, Fan, Cui & Xu, 1997:95 (correct original spelling) also spelled as Tricentrus dorsoacameloideus Yuan, Fan, Cui & Xu, 1997:102 and Tricentrus dorsocaineloideus Yuan, Fan, Cui & Xu, 1997:96 (incorrect original spellings) Note: Acting as First Reviser, Yuan & Chou, 2002:372 implicitly fixed the correct original spelling by adopting only it as valid (ICZN article 24.2.4).Published as part of Dmitriev, Dmitry A. & Deitz, Lewis L., 2017, Nomenclatural changes in the family Membracidae (Hemiptera, Auchenorrhyncha, Membracoidea) in Zootaxa 4365 (1), DOI: 10.11646/zootaxa.4365.1.7, http://zenodo.org/record/112531
Rhytidhysteron sichuanensis X. - L. Xu & C. - L. Yang, sp. nov.
No full text<i>Rhytidhysteron sichuanensis</i> X.-L. Xu & C.-L. Yang, sp. nov. (Fig. 4) <p> HOLOTYPE. — <b>China</b>. Sichuan Province, Zizhong county, 29°46’28.29”N, 104°49’19.66”E, alt. 316 m, on dead twigs of <i>Citrus maxima</i> (Burm.) Merr. (Rutaceae), 8.VI.2019, collected by X.-L. Xu & C. - L. Yang, <i>XXL201906001</i> (holo-, SICAU 19-0004), ex-type living culture (SICAUCC 19-0005).</p> <p>ETYMOLOGY. — The specific epithet refers to the place where the fungus was collected.</p> <p>INDEX FUNGORUM. — IF557217.</p> <p> ADDITIONAL SPECIMENS EXAMINED. — <b>China</b>. Sichuan Province, Zizhong county, 29°46’28.29”N, 104°49’19.66”E, alt. 316 m, on dead twigs of <i>Citrus reticulata</i> Blanco (Rutaceae), 20.III.2019, collected by X.-L. Xu & C.-L. Yang, <i>YCL201903006</i> (SICAU 19- 0008), living culture (SICAUCC 19-0009); on dead twigs of <i>Citrus reticulata</i> Blanco ‘Ponkan’ (Rutaceae), 8.VI.2019, <i>XXL201906003</i> (SICAU 19-0005), living culture (SICAUCC 19-0006); 5.IV.2019, <i>YCL201904001</i> (SICAU 19-0007), living culture (SICAUCC 19- 0008); 29°46’22.97”N, 104°49’12.20”E, alt. 303 m, on dead twigs of <i>Broussonetia papyrifera</i> (Linnaeus) L’Heritier ex Ventenat (Moraceae), 19.X.2019, collected by X.-L. Xu & C.-L. Yang, <i>XXL201910003</i> (SICAU 20-0002), living culture (SICAUCC 20-0002); Ya’an City, Yucheng District, 30°8’7.84”N, 103°3’21.29”E, alt. 907 m, on dead twigs of <i>Lagerstroemia indica</i> L. (Lythraceae), 28.XI.2019, collected by C.-L. Yang, <i>XXL201911005</i> (SICAU 20-0005), living culture (SICAUCC 20-0005).</p> <p> ADDITIONAL GENBANK NUMBER. — SICAUCC 19-0005: <i>tub</i> 2, MT075592; <i>rpb</i> 2, MT027608. SICAUCC 19-0006: <i>tub</i> 2, MT075593; <i>rpb</i> 2, MT027609. SICAUCC 19-0008: <i>tub</i> 2, MT075595; <i>rpb</i> 2, MT027611. SICAUCC 19-0009: <i>rpb</i> 2, MT027612. SICAUCC 20- 0002: <i>tub</i> 2, MT075587; <i>rpb</i> 2, MT075603. SICAUCC 20-0005: <i>tub</i> 2, MT075590; <i>rpb</i> 2, MT075606.</p> DESCRIPTION <p>Saprobic on decaying woody branches and twigs.</p> <i>Sexual morphology</i> <p> Ascomata 930-2370 µm long × 760-1930 µm wide × 280- 820 µm high (<i>x</i> = 1318 × 1249 × 479 µm, n = 20), apothecioid, carbonaceous, scattered to gregarious, semi-immersed, black, exposed with irregular, oval to circular in outline, reddish brown, or brown to black disc, folded along the margins with perpendicularly striate along the long axis, compressed at the apex. Exciple 60-107 µm wide (<i>x</i> = 80 µm, n = 15), two-layered, outer layer is composed of thick-walled, dark brown to brown cells of textura globulosa, inner layer is composed of thin-walled, hyaline to light brown cells of textura angularis. Hamathecium composed of 1.3-3.2 µm wide at the base, 3.1-4.9 µm wide at swollen tips (n = 20), dense, hyaline, septate pseudoparaphyses, branched and forming a yellow epithecium above the asci, slightly swollen with dense septa at the apex. Hymenium turns blue in Melzer’s reagent, J +. Asci 143-196 <i>×</i> 9.9-13 µm (<i>x</i> = 169 × 12 µm, n = 30), 6-8-spored, bitunicate, clavate to cylindrical, short pedicellate and apically rounded with an ocular chamber, J- in Melzer’s reagent. Ascospores 18-30 <i>×</i> 8-11 µm (<i>x</i> = 24 × 9.6 µm, n = 40), partially overlapping, uniseriate, 1-2-3-septate, frequently 3-septate, ellipsoid or fusoid, straight or slightly curved, constricted septum, olive-green to brown or dark brown, without a mucilaginous sheath.</p> <i>Asexual morphology</i> <p>Undetermined.</p> <i>Culture characteristics</i> <p>Ascospores germinating on PDA within 24 hours and germ tubes produced from any cell. Colonies growing on PDA reach 3 cm diam after six days at 25°C, flat, circular, initially white, becoming gray to dark gray or reddish brown.</p> NOTES <p> The new species <i>Rhytidhysteron sichuanensis</i> X.-L. Xu & C.-L. Yang, sp. nov. differs from <i>R. thailandium</i> in size of ascomata (930-2370 × 760-1930 × 280-820 µm vs 700- 1200 × 530-750 × 360-640 µm), the width of exciple (60- 107 µm, vs 72-130 µm), the length of asci (143-196 µm vs 135-160 µm), the ascospore septation (1-2-3-septate vs 3-septate), and the color of ascospore. <i>R. sichuanensis</i> X.-L. Xu & C.-L. Yang, sp. nov. is phylogenetically close to <i>R. thailandicum</i>.We compared the nucleotides of LSU, SSU, <i>tef-</i> 1 <i>α</i> and ITS gene regions to <i>R. thailandicum</i> (holo-, MFLUCC 14-0503). <i>R. sichuanensis</i> X.-L. Xu & C.-L. Yang, sp. nov. has 20 (<i>tef-</i> 1 <i>α</i>, 2.15 %), 11 (ITS, 2.16 %) base-pair differences to <i>R. thailandicum</i>.</p>Published as part of <i>Xu, Xiu-Lan, Xiao, Qian-Gang, Yang, Chun-Lin, Jeewon, Rajesh & Liu, Ying-Gao, 2022, Multigene phylogenetic support for novel Rhytidhysteron Speg. species (Hysteriaceae) from Sichuan Province, China, pp. 63-79 in Cryptogamie, Mycologie 20 (3)</i> on pages 70-72, DOI: 10.5252/cryptogamie-mycologie2022v43a3, <a href="http://zenodo.org/record/7815283">http://zenodo.org/record/7815283</a>
The Lebesgue constant of the Xu interpolation points
No full textIn the paper \cite{xu3}, the author introduced a set of Chebyshev-like points for polynomial interpolation (by a certain subspace of polynomials) in the square , and derived a compact form of the corresponding Lagrange interpolation formula. In \cite{nostro1} we gave an efficient implementation of the Xu interpolation formula and we studied numerically the Lebesgue constant of the Xu points, giving evidence that it grows like , being the degree. The aim of the present paper is to provide an analytic proof that indeed the Lebesgue constant does have this order of growth
Tricentrus camelloleifer Yuan & Xu in Yuan, Fan, Cui & Xu 1997
No full textTricentrus camelloleifer Yuan & Xu in Yuan, Fan, Cui & Xu, 1997:97 (correct original spelling) also spelled as Tricentrus camellolefer Yuan, Fan, Cui & Xu, 1997:91 (incorrect original spelling). Note: Acting as First Reviser, Yuan & Chou, 2002:391 implicitly fixed the correct original spelling by adopting only it as valid (ICZN article 24.2.4).Published as part of Dmitriev, Dmitry A. & Deitz, Lewis L., 2017, Nomenclatural changes in the family Membracidae (Hemiptera, Auchenorrhyncha, Membracoidea) in Zootaxa 4365 (1), DOI: 10.11646/zootaxa.4365.1.7, http://zenodo.org/record/112531
Lonchodryinus bimaculatus Xu & He 1994
No full text1. Lonchodryinus bimaculatus Xu & He, 1994 (Plate 58A, B) Lonchodryinus bimaculatus Xu & He 1994a: 128; He & Xu 2002: 106; Xu et al. 2012a: 11. Lonchodryinus niger He & Xu 2002: 109; type locality: Huoditang (Shaanxi, China); Xu et al. 2012a: 11; syn. nov. Description of Female. Fully winged; length 2.0– 3.3 mm. Head black, except clypeus, area between antennal toruli, anterior part of face and temple yellow-whitish; mandible testaceous, except teeth reddish-brown; antenna yellow; propleura testaceous; pronotum testaceous, except dorsal anterior half black; lateral regions of pronotum testaceous; pronotal tubercle yellow; rest of mesosoma and metasoma black; legs yellow. Antenna clavate; antennal segments of holotype in following proportions: 6:3.5:7:8:7:6:5:5.5:5.5:6.5; antennal segments of specimen from China, Dashahe, in following proportions: 12:6:14:14:11:11:9:8:8:11. Head shiny, smooth, densely punctate, unsculptured among punctures; clypeus and anterior part of face densely hairy; frontal line incomplete, only visible in front of anterior ocellus; occipital carina complete; head of holotype with POL = 2; OL = 1.5; OOL = 4; OPL = 2.8; TL = 4.4; greatest diameter of posterior ocelli shorter than OPL (1.2:2.8); head of specimen from China, Dashahe, with POL = 5; OL = 3; OOL = 7.5; OPL = 4; TL = 6; greatest diameter of posterior ocelli shorter than OPL (2:4). Pronotum shiny, densely punctate, crossed by transverse impression, with anterior suface shorter than posterior one (2:4); pronotal tubercle reaching tegula; in specimen from China, Dashahe, posterior surface of pronotum much shorter than scutum (5:16). Scutum and scutellum shiny, punctate, unsculptured among punctures; notauli incomplete, reaching approximately 0.5 length of scutum. Metanotum reticulate rugose. Propodeum reticulate rugose, without transverse or longitudinal keels. Fore wing hyaline, without dark transverse bands. Distal part of stigmal vein of holotype approximately as long as proximal part (6.5:6); distal part of stigmal vein of specimen from China, Dashahe, shorter than proximal part (7:10). Stigmal vein forming angle between distal and proximal part. Protarsal segments of the holotype in following proportions: 5.2:1.5:1.7:4:10.5; protarsal segments of specimen from China, Dashahe, in following proportions: 15:4:5:12:30. Enlarged claw (Plate 58A) with proximal prominence bearing one long bristle. Segment 5 of protarsus (Plate 58A) with basal part shorter than distal part (4.5:6), with preapical furrow containing distal apex of enlarged claw when the chela is closed. Holotype with segment 5 of protarsus with two rows of 29 lamellae (4 + 25); distal apex with five lamellae. In specimen from China, Dashahe, segment 5 of protarsus with three rows of at least 50 lamellae; distal apex with five lamellae. Tibial spurs 1/1/2. Description of Male. Fully winged; length 2.9–3.6 mm. Head black; antenna black-brown; mesosoma and metasoma black; legs black-brown. Antenna filiform; antennal segments in following proportions: 11.5:6.5:13:13:12.5:12.5:11:10:10:12. Head hairy, shiny, finely punctate, unsculptured among punctures; frontal line incomplete, reaching approximately 0.5 length of face; occipital carina complete; POL = 6; OL = 2.5; OOL = 9; OPL = 4; TL = 6. Scutum, scutellum and metanotum shiny, smooth, finely punctate, unsculptured among punctures. Notauli incomplete, reaching approximately 0.5 length of scutum. Propodeum dull, without transverse keel between dorsal and posterior surface; dorsal surface reticulate rugose; posterior surface with two longitudinal keels and with median area as rugose as lateral areas. Fore wing hyaline, without dark transverse bands; holotype of L. niger and many further specimens with darkened fore wing. Distal part of stigmal vein approximately as long as proximal part (10:11); stigmal vein forming angle between distal and proximal part. Paramere (Plate 58B) without distal inner process and with papillae on inner side. Tibial spurs 1/1/2. Material examined. Types: ♀ holotype of L. bimaculatus: CHINA: Sichuan, Mt. Emeisahan, 10.VIII.1980, Junhua He leg. (ZJUC); ♂ holotype of L. niger: CHINA: Shaanxi, Huoditang, 5.V.1998, Yun Ma leg. (ZJUC). Paratypes of L. niger: same locality label as holotype, 1♂ (ZJUC); CHINA: Henan, Luanchuan, 12.VII.1996, Ping Cai leg., 1♂ (ZJUC). Other material. CHINA: Gansu, Baishuijiang, Qujiaba, 2318 m, 26.VII.2004, Qiong Wu leg., 2♂ and 1♀ (ZJUC); Gansu, Baishui River, Qiujiaba, 23.VII.2004, Hongying Zhang leg., 5♂ (SCAU); Gansu, Daheba, 2530 m, 31.VII.2004, Min Shi leg., 1♀ (SCAU); Guangdong, Mt. Nankunshan, 31.X.2009, Chunhong Zeng leg., 1♂ (SCAU); Guizhou, Mt. Fanjingshan, Jinding, 2500 m, 30.VII.2001, Meihua Piao leg., 1♀ (ZJUC); Guizgou, Daozhen County, Dashahe, 1360 m, 20.VIII.2004, Qiong Wu leg., 5♀♀ (ZJUC); Guizhou, Daozhen County, Dashahe, Xiannudong, 644 m, 25.VIII.2004, Qiong Wu leg., 5♀♀ (ZJUC); Guizhou, Daozhen County, Dashahe, Guanchan, 1615 m, 17.VIII.2004, Shujun Wei leg., 1♀ (ZJUC); Henan, Luanchuan, 12.VII.1996, Ping Cai leg., 1♂ (ZJUC); Shaanxi, Liba, 1742 m, 22.VII.2004, Qiong Wu leg., 1♂ (ZJUC); Shaanxi, Liping National, Forest Park, 21.VII.2004, Xuexin Chen leg., 1♂ (SCAU); Sichuan, Mt. Emeishan, Leijianping, Jinding, 7.VII.2009, Jiangli Tan leg., 1♂ (SCAU); Taiwan, Nantou, Tsuifeng, 1♂ (AMNH); Yunnan, Dali, Mt. Cangshan, 5.VI.2009, Jiangli Tan leg., 1♂ (SCAU). Hosts. Unknown. Distribution. China (Sichuan, Shaanxi, Henan, Gansu, Guangdong, Guizhou, Taiwan, Yunnan). Remarks. Lonchodryinus niger He & Xu, 2002 is here tentatively considered the opposite sex of L. bimaculatus Xu & He, 1994, and, for this reason, synonymized. The sculpture of head and mesosoma of both species is in fact in great part very similar. In addition, only four species of Lonchodryinus are known in China: L. sinensis and L. ruficornis, whose opposite sexes are known, and L. bimaculatus and L. niger, respectively known on the basis of females and males. The association of the male of L. niger with the female of L. bimaculatus is very probable.Published as part of Xu, Zaifu, Olmi, Massimo & He, Junhua, 2013, Dryinidae of the Oriental region (Hymenoptera: Chrysidoidea), pp. 1-460 in Zootaxa 3614 (1) on pages 212-213, DOI: 10.11646/zootaxa.3614.1.1, http://zenodo.org/record/527837
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