Mimetus bucerus, Gan & Irfan & Peng & Ran & Zhan, 2019

Gan, Jiahui, Irfan, Muhammad, Peng, Xianjin, Ran, Siyu & Zhan, Ying, 2019, Three new species of the genus Mimetus Hentz, 1832 (Araneae: Mimetidae) from Yunnan-Guizhou Plateau of China, European Journal of Taxonomy 525, pp. 1-13 : 3-5

Mimetus bucerus sp. nov.

urn:lsid:zoobank.org:act:D5CAEEF0-D171-45E9-A913-E391575E45E6

Figs 1–2 , 7

Differential diagnosis

The male of this new species resembles that of M. lingbaoshanensis sp. nov., but can be distinguished from the latter by: 1) vexillum of male palp ox-horned in retrolateral view ( Figs 1C , 2B ) versus handlelike in M. lingbaoshanensis sp. nov. ( Figs 3C , 4B ); 2) distal portion of paracymbium claviform in retrolateral view ( Figs 1C , 2B ) versus lamelliform in M. lingbaoshanensis sp. nov. ( Figs 3C , 4B ); 3) tibia about 2 times longer than cymbium ( Figs 1C , 2B ) versus as long as cymbium in M. lingbaoshanensis sp. nov. ( Figs 3C , 4B ).

Etymology

The specific name comes from the Latin ‘ bucerus ’ (‘ox-horned’), refers to the shape of the vexillum of the cymbium.

Type material

Holotype

CHINA • ♂; Guizhou, Tongren city, Leishan County, Leigongshan National Nature Reserve , Xiangshuiyan ; 26°22′24″ N, 108°12′20″ E; 1642.1 m; 21 Jul. 2017, Cheng Wang, Feng-e Li, Gui-jie Tian and Hong Liu leg.; GZ-MIM-2017-005 .

Description

Male (holotype)

MEASUREMENTS. Total length 2.92.

PROSOMA. 1.51 long, 1.32 wide, pear-like, yellow, with a longitudinal brown band, fovea oval, situated posteriorly ( Fig. 1A ),

CLYPEUS. 0.15 high.

EYE. Sizes and interdistances: AME 0.14, ALE 0.09, PME 0.11, PLE 0.10, AME–AME 0.13, ALE–AME 0.14, PME–PME 0.98, PME–PLE 0.17. MOA anterior width 0.49, posterior width 0.51, length 0.52.

CHELICERAE ( Figs 2 C–D). Red-brown, with 10 promarginal peg setae and 2 retromarginal teeth. Endites light yellow, longer than wide. Labium light yellow, longer than wide. Sternum pear-shaped, glabrous, colouration as labium except for margin with few macrosetae.

LEGS. Slim, spiniferous, with brown patches. Length of legs: I 9.25 (2.51, 3.22, 2.41, 1.11), II 6.70 (1.89, 2.22, 1.58, 1.01), III 4.12 (1.28, 1.23, 0.82, 0.79), IV 4.97 (1.70, 1.45, 1.01, 0.81). Leg formula: 1243.

OPISTHOSOMA. 1.43 long, 1.31 wide, oval, with irregular red-brown patches and white spots, covered with sparse long hairs ( Fig. 1A ); ventral side with three brown patches, median area glabrous and grey, both sides with white spots.

PALP ( Figs 1 B–C, 2A–B). Cymbium slightly domed, with a ox-horned vexillum and several long hairs at the apex ( Figs 1 B–C, 2A–B).

PARACYMBIUM. Elongated, sclerotized, with irregular margin, a beak-like basal outgrowth and a claviform distal outgrowth in retrolateral view ( Figs 1C , 2B ).

BULB. With a semicircular subtegulum and a sheet-like membrane, the distal division sulciform, rolls up to protect the embolus ( Figs 1 B–C, 2A–B).

EMBOLUS. Slender, band-shaped, with a pointed end ( Figs 1B , 2A ).

Female

Unknown.

Distribution

China (Guizhou, Fig. 7 ).

Figures

Fig. 1. Mimetus bucerus sp. nov. A–C. Holotype, ♂ (GZ-MIM-2017-005). A. Habitus, dorsal view. B. Palp, prolateral view. C. Palp, retrolateral view. Scale bars: A = 1.0 mm; B–C = 0.1 mm.

Fig. 2. Mimetus bucerus sp. nov. A–D. Holotype, ♂ (GZ-MIM-2017-005). A. Palp, prolateral view. B. Palp, retrolateral view. C. Left chelicerae of male,ventral view. D. Left chelicerae, dorsal view. Scale bars: 0.1 mm.

Fig. 7. Distribution records of Mimetus bucerus sp. nov. (▲), M. lingbaoshanensis sp. nov. (●) and M. yinae sp. nov. (■).

Fig. 3. Mimetus lingbaoshanensis sp. nov. A, C–E. Holotype, ♂ (YN-MIM-2015-010). B, F–G. One of the paratypes, ♀ (YN-MIM-2015-011). A–B. Habitus, dorsal view. C. Palp, prolateral view. D. Palp, retrolateral view. E. Left chelicerae, ventral view. F. Epigyne, ventral view. G. Vulva, dorsal view. Scale bars: A–B = 0.5 mm; C–G = 0.1 mm

Fig. 4. Mimetus lingbaoshanensis sp. nov. A–B, E. Holotype, ♂ (YN-MIM-2015-010). C–D. Paratype, ♀ (YN-MIM-2015-011). A. Palp, prolateral view. B. Palp, retrolateral view. C. Epigyne, ventral view. D. Vulva, dorsal view. E. Left chelicerae, ventral view. Scale bars = 0.1 mm.