Asceua adunca

Zhang, Bao-Shi & Zhang, Feng, 2018, Two new species of the spider Family Zodariidae from Laos, Zootaxa 4459 (2), pp. 285-300: 286-290

publication ID

https://doi.org/10.11646/zootaxa.4459.2.4

publication LSID

lsid:zoobank.org:pub:CB8F7C3E-C6BE-452B-A54A-D0BF3DE6762F

persistent identifier

http://treatment.plazi.org/id/03BA87F1-FFFB-FFFB-FF6A-FCF2E83DFD05

treatment provided by

Plazi

scientific name

Asceua adunca
status

sp. nov.

Asceua adunca  sp. nov.

( Figs 1–3View FIGURE 1View FIGURE 2View FIGURE 3)

Type material. Holotype male (Z-Laos-11-21), LAOS, Champasak Province: Pakse City, Tad Etu (N 15°11', E 106°06'), 17 Nov. 2011, Z.Z. Gao legGoogleMaps  . Paratypes: 3 males (Z-Laos-11-22 - Z-Laos-11-24) and 6 females (Z-Laos- 11-25 - Z-Laos-11-30), same data as holotypeGoogleMaps  ; 2 males (Z-Laos-11-60,Z-Laos-11-61) and 2 females (Z-Laos-11- 62, Z-Laos-11-63), Pakse City, Tad Etu (N 15°11', E 106°06'), 21 Nov. 2011, Z.Z. Gao leg.GoogleMaps 

Diagnosis. The males of Asceua adunca  sp. nov. can be distinguished from other Asceua  species by the combination of the following characters: membranous conductor long and parallel to the terminal part of embolus, the median apophysis with a very long and thin hook-like extension; the shape of tegulum, the RTA bifurcate ( Figs 2A–C View Figure , 3A–C View Figure ). Asceua adunca  sp. nov. resembles to Asceua quadrimaculata Zhang, Zhang & Jia, 2012  by the shape of tegulum and the RTA bifurcate, two small epigynal copulatory openings and a small central epigynal pocket, but it differs from the latter by the hook-like extension of the median apophysis, the two distant copulatory openings and the smaller spermathecae ( Figs 2D, E View Figure , 3D, E View Figure ).

Etymology. The specific name is from Latin word “ adunca  ”, in reference to the hook-like extension of the median apophysis; adjective.

Description. Male (holotype): Total length 2.03: prosoma 1.07 long, 0.73 wide; opisthosoma 0.82 long, 0.70 wide. Carapace ( Fig. 1A View Figure ) longer than wide, brown, median part with faint black patch in front of black fovea, margins black, thorax elevated, tegument smooth and shiny. Clypeus 0.24 high, brown. Anterior eye row slightly procurved, posterior eye row strongly procurved in dorsal view. Each eye ringed with black. Eye diameters: AME 0.08, ALE 0.08, PME 0.07, PLE 0.09. Eye interdistances: AME–AME 0.02, AME–ALE 0.08, ALE–ALE 0.30, AME–PME 0.07, PME–PME 0.08, PME–PLE 0.08, PLE–PLE 0.41, ALE–PLE 0.07. MOQ 0.22 long, anterior width 0.18, posterior width 0.21. Chilum poorly defined. Mouthpart ( Fig. 1B View Figure ): chelicerae brown, with two anterior and one posterior teeth on margins of fang furrows, terminal part with row of black scopulae, fangs short; endites brown, apices paler and provided with dense black scopula; labium triangular, 0.16 long, 0.15 wide, brown, median part with semi-orbicular dark band. Sternum ( Fig. 1B View Figure ) 0.51 long, 0.50 wide, brown, lateral margin dark, provided with sparse black setae, its lateral margin with inter- and intra-coxal triangles. Legs ( Figs 1A, B View Figure ) yellow-brown, each femur, patella, tibia, metatarsus with some black patches at extremities. Leg measurements: leg?3.10 (0.86 + 0.53 + 0.50 + 0.76 + 0.45),? 2.42 (0.67 + 0.29 + 0.44 + 0.65 + 0.37),? 1.63 (0.63 + 0.17 + 0.21 + 0.38 + 0.24),? 3.19 (0.89 + 0.18 + 0.57 + 1.05 + 0.50). Leg formula: 4123. Opisthosoma ( Figs 1A, B View Figure ) oval, longer than wide, covered with black short hair. Dorsum of opisthosoma slightly sclerotized, dark brown, with three pairs of lighter brown patches, posterior one connected by narrow transversal median light band; anterior part of venter yellow. Spinnerets ( Fig. 1B View Figure ) yellow pale, laterally with two blackish patches.

Male palp ( Figs 2A–C View Figure , 3A–C View Figure ): Median apophysis wide and strong, retrolaterally with long and thin hook-like extension; palpal tibia with strong ventral and retrolateral blunt process, retrolateral tibial apophysis wide, triangular and dorsal tibial apophysis finger-shaped. Cymbium with terminal spine and with pro- and retrolateral folds not reaching tip.

Female. One of the specimens (Z-Laos-11-25) measured: Total length 2.74: prosoma 1.14 long, 0.85 wide; opisthosoma 1.61 long, 1.26 wide. Carapace brown. Clypeal height 0.20. Eye diameters: AME 0.07, ALE 0.06, PME 0.08, PLE 0.08. Eye interdistances: AME–AME 0.03, AME–ALE 0.04, ALE–ALE 0.35, AME–PME 0.16, PME–PME 0.10, PME–PLE 0.09, PLE–PLE 0.47, ALE–PLE 0.14. MOQ 0.31 long, front width 0.19, back width 0.23. Mouthpart ( Fig. 1D View Figure ): labium 0.19 long, 0.25 wide. Sternum 0.55 long, 0.57 wide. Leg measurements: I 2.67 (0.63 + 0.23+ 0.65 + 0.68 + 0.48), II 2.22 (0.55 + 0.25 + 0.54 + 0.57 + 0.31), III 2.60 (0.60 + 0.30 + 0.58 + 0.71 + 0.41), IV 3.70 (0.78 + 0.29 + 0.88 + 1.16 + 0.59). Leg formula: 4132. Dorsum of opisthosoma black, without dorsal scutum, with two pairs of white anterior patches, followed posteriorly by four transversal median bands; venter yellowish-white. Other color as in male ( Figs 1C, D View Figure ).

Female genitalia ( Figs 2D, E View Figure , 3D, E View Figure ) with central epigynal pocket, copulatory openings situated in posterior part of epigyne; long and winding copulatory ducts visible through integument; spermathecae small and oval, situated posteriorly and well separated.

Distribution. Laos (Champasak).

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Zodariidae

Genus

Asceua