Meta yinae, Wang & Zhou & Irfan & Yang & Peng, 2020

Wang, Luyu, Zhou, Guchun, Irfan, Muhammad, Yang, Sufang & Peng, Xianjin, 2020, Five new species of Meta Koch, 1836 (Araneae: Tetragnathidae) from Gaoligong Mountains, China, European Journal of Taxonomy 624, pp. 1-25 : 18-23

publication ID

https://doi.org/ 10.5852/ejt.2020.624

publication LSID

lsid:zoobank.org:pub:4D368C5E-125D-4364-B920-D234DF92C61A

DOI

https://doi.org/10.5281/zenodo.3808737

persistent identifier

https://treatment.plazi.org/id/07066DE2-94F3-431C-A28C-5ED596CA782B

taxon LSID

lsid:zoobank.org:act:07066DE2-94F3-431C-A28C-5ED596CA782B

treatment provided by

Valdenar

scientific name

Meta yinae
status

sp. nov.

Meta yinae View in CoL sp. nov.

urn:lsid:zoobank.org:act:07066DE2-94F3-431C-A28C-5ED596CA782B

Figs 1 View Fig G–H, 13–15

Differential diagnosis

Meta yinae sp. nov. can be distinguished from the other Chinese Meta species by the wide conductor, the Y-shaped cymbial ectobasal process of the male palp ( Figs 13 View Fig , 15 View Fig A–C), and the bean-shaped spermathecae of the epigyne ( Figs 14B View Fig , 15E View Fig ). Meta yinae sp. nov. resembles M. yani sp. nov. ( Figs 10– 12 View Fig View Fig View Fig ), but can be distinguished from the latter by the following characters. Metaine embolic apophysis not bifurcated in ventral view in M. yinae sp. nov. ( Figs 13D View Fig , 15B View Fig ), bifurcated in M. yani sp. nov. ( Figs 10D View Fig , 12B View Fig ). The spine-like apophysis of the cymbial ectobasal process arises from the top of CEP and points towards the genital bulb in M. yinae sp. nov. ( Figs 13B View Fig , 15C View Fig ), it forms the median portion of CEP and points towards the cymbium in M. yani sp. nov. ( Figs 10B View Fig , 12C View Fig ). The posterior margin of the epigynal plate almost round in M. yinae sp. nov. ( Figs 14A View Fig , 15D View Fig ), centrally incised in M. yani sp. nov. ( Figs 11A View Fig , 12D View Fig ). Spermathecae longitudinal, present posteriorly in M. yinae sp. nov. ( Figs 14B View Fig , 15E View Fig ), whereas horizontal, present anteriorly in M. yani sp. nov. ( Figs 11B View Fig , 12E View Fig ).

Etymology

The specific epithet is taken from the family name of Prof. Changmin Yin, in honour of her great contribution to Chinese arachnology; noun.

Type material

Holotype

CHINA • ♂; Yunnan Province, Fugong County, Pihe Township, Yueliangtian Village ; 26°34′04″ N, 98°54′32″ E; alt. 1520 m; 20–24 Aug. 2005; G. Tang leg.; HNU-Tang-05-08. GoogleMaps

Paratypes (15 ♂♂ and 18 ♀♀)

CHINA – Yunnan Province – Fugong County • 7 ♂♂, 13 ♀♀; same collection data as for holotype; HNU-Tang-05-08 GoogleMaps 1 ♂; Lumadeng Township, Yaping Village, 7.2 km up of Shibali; 27°10′47″ N, 98°43′35″ E; alt. 3059 m; 4 May 2004; H.M. Yan and G.X. Peng leg.; HNU-20040504-3 GoogleMaps 1 ♂, 3 ♀♀; 10.1–11.5 km from Shibali to Yaping; 27°12′02″ N, 98°42′49″ E– 27°12′24″ N, 98°43′03″ E; alt. 3225– 3290 m; 8 May 2004; C. Griswold and D.H. Kavanaugh leg.; HNU-CGY40 GoogleMaps 1 ♀; Lumadeng Township, Yaping Village, Yaping Yakou ; 27°10′47″ N, 98°43′35″ E; alt. 3280– 3100 m; 8 May 2004; H.M. Yan leg.; HNU-20040508 GoogleMaps . – Lushui County • 2 ♂♂; Luzhang Township, Yaojiaping Forest Station ; 25°58′31″ N, 98°42′36″ E; alt. 2515 m; 20 May 2005; K.J. Guo leg.; HNU-GKJ013 GoogleMaps . – Longyang County • 1 ♂; Bawan Township, Sancha River, Luoshuidong area ; 24°55′33″ N, 98°45′29″ E; alt. 2300 m; 3 June 2005; Charles Griswold leg.; HNU-CGY137 GoogleMaps . – Tengchong County • 1 ♂; Jietou Township, No. 8 Boundary Post of Yakou ; 25°48′32″ N, 98°37′15″ E; alt. 2890 m; 23 May 2006; X.J. Peng, X.P. Wang and P. Hu leg.; HNU-Wang060523-2 GoogleMaps . – Gongshan County • 1 ♀; Cicai Township, Dahaituo ; 27°47′04″ N, 98°27′37″ E; alt. 3363 m; 13 Aug. 2006; P. Hu leg.; HNU-Hu060813 GoogleMaps 1 ♂; Qiqi No. 12 bridge ; 27°42′59″ N, 98°30′11″ E; alt. 2738 m; 28 Sep. 2007; X.J. Peng leg.; HNU-20070928 GoogleMaps 1 ♂; Qiqi Dongshaofang ; 27°41′43″ N, 98°29′07″ E; alt. 3208 m; 29 Sep. 2007; X.J. Peng leg.; HNU-20070929 GoogleMaps .

Description

Male (holotype, Fig. 1G View Fig )

MEASUREMENTS. Total length 5.29. Prosoma 2.45 long, 2.00 wide; opisthosoma 3.28 long, 1.95 wide. Eye sizes and interdistances: AME 0.14, ALE 0.16, PME 0.15, PLE 0.16; AME–AME 0.09, AME–ALE 0.13, PME–PME 0.09, PME–PLE 0.19, ALE–PLE 0.03. MOA 0.44 long, front width 0.37, back width 0.42. Clypeus 0.11 high.

CHELICERAE. Strong, brown, with three promarginal and four retromarginal teeth.

GNATHOCOXAE AND LABIUM. Brown, longer than wide.

DORSUM OF PROSOMA. Yellowish brown, with longitudinal dark brown band. Cervical groove distinct, radial furrows indistinct ( Fig. 1G View Fig ).

STERNUM. Brown, scutellate, with sparse brown hairs.

LEGS. Brown, with annuli. Length of legs: I, 13.40 (3.82, 4.68, 3.41, 1.49); II, 10.48 (3.02, 3.73, 2.51, 1.22); III, 6.00 (2.01, 1.89, 1.39, 0.71); IV, 7.71 (2.50, 2.45, 1.91, 0.85). Leg formula: 1243.

OPISTHOSOMA. Oval, dorsum with two pairs of sigillae, yellowish brown, with several irregular black markings ( Fig. 1G View Fig ). Venter of opisthosoma yellowish brown, with black markings.

PALP ( Figs 13 View Fig , 15 View Fig A–C). Cymbial ectobasal process Y-shaped, with hook-shaped tip. Paracymbium strong and rod-like, with sparse long, brown hairs. Metaine embolic apophysis longer than wide, tongueshaped. Embolus long, thin, proximally covered by conductor. Conductor longer than wide, slightly curved, arising meso-retrolaterally from bulb, extending clockwise, with a membranous end.

Female (HNU-Tang-05-08, Fig. 1H View Fig )

MEASUREMENTS. Total length 6.17. Prosoma 2.44 long, 2.09 wide; opisthosoma 4.25 long, 3.38 wide. Eye sizes and interdistances: AME 0.15, ALE 0.18, PME 0.17, PLE 0.16; AME–AME 0.09, AME–ALE 0.14, PME–PME 0.10, PME–PLE 0.18,ALE–PLE 0.04. MOA anterior width 0.39, posterior width 0.45, anterior width 0.46. Clypeus 0.12 high.

LEGS. Leg measurements: I, 11.06 (3.20, 3.86, 2.73, 1.27); II, 8.53 (2.52, 3.01, 2.03, 0.97); III, 5.07 (1.63, 1.68, 1.10, 0.66); IV, 7.18 (2.35, 2.45, 1.65, 0.73).Leg formula: 1243. Other morphological characteristics same as in male.

EPIGYNE ( Figs 14 View Fig , 15 View Fig D–E). Copulatory ducts thick and short. Spermathecae bean-shaped, present posteriorly. Fertilization ducts relatively long and thick.

Variation

The total length in male specimens examined ranges from 4.79 to 5.29, in female specimens from 4.95 to 6.74.

Distribution

China, Yunnan Province (Fugong, Lushui, Longyang, Tengchong, Gongshan) ( Fig. 16 View Fig ).

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Tetragnathidae

Genus

Meta

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