Althepus pictus Thorell, 1898,

Lin, Yejie, Tavano, Maria L., Li, Shuqiang & Chen, Haifeng, 2020, Redescription of the type specimens of Althepus pictus Thorell, 1898 (Araneae Psilodercidae) from Myanmar, Zootaxa 4838 (3), pp. 441-444: 441-442

publication ID

https://doi.org/10.11646/zootaxa.4838.3.9

DOI

http://doi.org/10.5281/zenodo.4476008

persistent identifier

http://treatment.plazi.org/id/E975961D-9A3E-043E-68C4-FA4FFCDC7DAB

treatment provided by

Plazi

scientific name

Althepus pictus Thorell, 1898
status

 

Althepus pictus Thorell, 1898  ( Figs 1‒3View FIGURE 1View FIGURE 2View FIGURE 3)

Althepus pictus Thorell, 1898: 279 

Althepus pictus Fage, 1912: 144  , figs 109–122

Type material. Lectotype ♂ and paralectotype 1♀ (here designated, MSNG), label “ Carin Chebà, 600–800 m., XI.88”. A female specimen from Farm Caves was mentioned in the original description, but was not available. 

Diagnosis. Althepus pictus  resembles A. nophaseudi Li, Li & Jäger, 2014  by the males having similarly shaped tarsus and tibia, sigmoid conductor, and the females having two pairs of spermathecae. However, the male of A. pictus  can be distinguished by the hook-shaped spine reaching the top of bulb ( Fig. 1CView FIGURE 1) (vs. at the middle of bulb, see Li et al 2014, fig. 20), conductor arising prolatero-distally from bulb ( Fig. 1AView FIGURE 1) (vs. conductor arising proximally from bulb, see Li et al 2014, fig. 18). In the female, the copulatory ducts are clearly curved ( Fig. 2BView FIGURE 2) (vs. copulatory ducts are straight, see Li et al 2014, fig. 22).

Description. Male. Measurements: total length 3.40; prosoma 1.12 long, 1.07 wide; opisthosoma 2.10 long, 1.18 wide. Leg measurements: I 19.50, II 14.50, III 10.00, IV 16.00. Color faded. Dorsal prosoma sub-circular. Cheliceral lamina reduced, promargin with three teeth, retromargin with two small teeth, posterior surface of fang with 18 small denticles.

Male palp: serrated bristles lost; cymbium with a hooked spine with tip directed proximally; bulb ovate, conductor arising prolatero-distally from bulb, sigmoid, proximad; embolus missing; embolus and conductor widely separated (the distance is less than diameter of bulb) ( Figs 1View FIGURE 1 A–C).

Female. Measurements: prosoma 1.60 long, 1.56 wide; opisthosoma 2.21 long, 1.53 wide. Internal genitalia with two pairs of transparent copulatory ducts and spermathecae ( Fig. 2A, B, DView FIGURE 2).

Variability. Both male and female type specimens are in poor condition, most legs are lost, and no further measurements are possible.

Distribution. Myanmar. Only known from type localities.

MSNG

Italy, Genova, Museo Civico di Storia Naturale "Giacomo Doria"

MSNG

Museo Civico di Storia Naturale di Genova 'Giacomo Doria'

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Ochyroceratidae

Genus

Althepus

Loc

Althepus pictus Thorell, 1898

Lin, Yejie, Tavano, Maria L., Li, Shuqiang & Chen, Haifeng 2020
2020
Loc

Althepus pictus

Fage, L. 1912: 144
1912
Loc

Althepus pictus

Thorell, T. 1898: 279
1898