Meta tangi, 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 : 10-14

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.3808745
persistent identifier	https://treatment.plazi.org/id/10D52C59-FE5E-4351-840F-33980B2AF94B
taxon LSID	lsid:zoobank.org:act:10D52C59-FE5E-4351-840F-33980B2AF94B
treatment provided by	Valdenar
scientific name	Meta tangi
status	sp. nov.

Treatment

Meta tangi View in CoL sp. nov.

urn:lsid:zoobank.org:act:10D52C59-FE5E-4351-840F-33980B2AF94B

Figs 1 View Fig C–D, 7–9

Differential diagnosis

Meta tangi sp. nov. can be distinguished from the other Chinese Meta species by having a thin and long embolus, a dagger-shaped cymbial ectobasal process of the male palp ( Figs 7 View Fig , 9 View Fig A–C), and U-shaped spermathecae of its epigyne ( Figs 8B View Fig , 9E View Fig ). This new species resembles M. hamata sp. nov. ( Figs 1 View Fig A–B, 2–4), but can be distinguished by the following characters. Cymbial ectobasal process longer than wide with pointed end in ventral view in M. tangi sp. nov. ( Figs 7D View Fig , 9B View Fig ), wider than long in M. hamata sp. nov. ( Figs 2D View Fig , 4B View Fig ). Distal part of embolus thin and proximally covered by the conductor in prolateral view in M. tangi sp. nov. ( Figs 7A View Fig , 9A View Fig ), thick and not covered by the conductor in M. hamata sp. nov. ( Figs 2A View Fig , 4A View Fig ). Metaine embolic apophysis narrow in ventral view in M. tangi sp. nov. ( Figs 7D View Fig , 9B View Fig ), tongue-like in M. hamata sp. nov. ( Figs 2D View Fig , 4B View Fig ). Spermathecae U-shaped in M. tangi sp. nov. ( Figs 8B View Fig , 9E View Fig ), boxing glove-like in M. hamata sp. nov. ( Figs 3B View Fig , 4E View Fig ).

Etymology

The specific name is a patronym dedicated to Mr. Guo Tang, one of the collectors of the type specimens.

Type material

Holotype

CHINA • ♂; Yunnan Province, Baoshan City, Longyang District, Mangkuan Township , Baihualing ; 25°18′13″ N, 98°48′01″ E; alt. 1624 m; 10 Oct. 2007; X.J. Peng leg.; HNU-20071010 . GoogleMaps

Paratypes (11 ♂♂ and 9 ♀♀)

CHINA – Yunnan Province • 1 ♂; same collection data as for holotype; HNU-20071010 GoogleMaps • 2 ♀♀; Tengchong County, Jietou Township, Shaba Village , Lijiazai Group ; 25°14′11″ N, 98°25′16″ E; alt. GoogleMaps

1819 m; 23 Oct. 2003; G. Tang leg.; HNU-Tang031023 • 3 ♂♂; Baoshan City, Nankang Yakou (National 320 Road); 24°49′35″ N, 98°45′58″ E; alt. 2186 m; 26 Oct. 2003; G. Tang leg.; HNU-Tang031026 GoogleMaps • 3 ♂♂, 6 ♀♀; Baoshan City, Nankang Yakou (National 320 Road); 24º49′35″ N, 98º45′58″ E; alt. 2186 m; 30 Oct. 2003; G. Tang leg.; HNU-Tang031030 GoogleMaps • 3 ♂♂; Baoshan City, Nankang Yakou (National 320 Road); 24º49′35″ N, 98º45′58″ E; alt. 2186 m; 31 Oct. 2003; G. Tang leg.; HNU-Tang031031 GoogleMaps • 1 ♀; Tengchong County, 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 GoogleMaps • 1 ♂; Longyang District, Mangkuan Township , Baihualing ; 25°18′1″ N, 98°47′14″ E; alt. 1995 m; 11 Oct. 2007; X.J. Peng leg.; HNU-20071011 . GoogleMaps

Description

Male (holotype, Fig. 1C View Fig )

MEASUREMENTS. Total length 5.33. Prosoma 2.52 long, 1.86 wide; opisthosoma 3.10 long, 2.02 wide. Eye sizes and interdistances: AME 0.12, ALE 0.15, PME 0.14, PLE 0.14; AME–AME 0.14, AME–ALE 0.16, PME–PME 0.11, PME–PLE 0.18, ALE–PLE 0.05. MOA 0.41 long, front width 0.39, back width 0.44. Clypeus height 0.13.

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

GNATHOCOXAE AND LABIUM. Brown, longer than wide. Sternum brown, scutellate, with sparse dark brown hairs.

LEGS. Yellowish brown, with annuli. Length of legs: I, 16.77 (4.45, 6.01, 4.70, 1.61); II, 12.07 (3.57, 4.26, 3.16, 1.08); III, 5.96 (1.92, 1.91, 1.47, 0.66); IV, 8.77 (2.73, 2.74, 2.46, 0.84). Leg formula: 1243.

OPISTHOSOMA. Oval.

DORSUM. With two pairs of sigillae, yellowish brown, proximally with a white band followed by irregular black markings posteriorly ( Fig. 1C View Fig ). Venter of opisthosoma yellowish brown, with black markings. Dorsum of prosoma yellowish brown, with longitudinal dark brown band. Cervical groove distinct, radial furrows indistinct ( Fig. 1C View Fig ).

PALP ( FIGS 7 View Fig , 9 View Fig A–C). Cymbial ectobasal process dagger-like. Paracymbium rod-like and curved, with sparse long, brown hairs. Metaine embolic apophysis long, narrow, finger-like.

EMBOLUS. Long, thin, most of proximal portion covered by conductor. Conductor arising mesoretrolaterally from bulb, extending clockwise, with a membranous end.

Female (Tang 031023, Fig. 1F View Fig )

MEASUREMENTS. Total length 5.50. Prosoma 2.03 long, 1.59 wide; opisthosoma 3.73 long, 3.09 wide ( Fig. 1D View Fig ). Eye sizes and interdistances: AME 0.11, ALE 0.15, PME 0.15, PLE 0.14; AME–AME 0.10, AME–ALE 0.11, PME–PME 0.09, PME–PLE 0.13, ALE–PLE 0.04. MOA 0.40 long, front width 0.34, back width 0.40. Clypeus 0.07 high.

LEGS. Length of legs: I, 10.26 (3.08, 3.48, 2.62, 1.08); II, 7.76 (2.30, 2.74, 1.80, 0.92); III, 4.28 (1.33, 1.33, 1.02, 0.60); IV, 6.28 (2.11, 1.97, 1.51, 0.69). Leg formula: 1243. Other morphological characteristics same as in male.

EPIGYNE ( Figs 8 View Fig , 9 View Fig D–E). Spermathecae U-shaped. Fertilization ducts long, thick, sickle-shaped.

Variation

The total length in male specimens examined ranges from 4.82 to 5.33, in female specimens from 5.50 to 6.67.

Distribution

China, Yunnan Province (Baoshan, Tengchong) ( Fig. 16 View Fig ).