Psiloderces palopoensis
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Ordo: Araneae
Familia: Psilodercidae
Genus: Psiloderces
Name
Psiloderces palopoensis Li & Chang sp. nov. – Wikispecies link – ZooBank link – Pensoft Profile
Types
Holotype: ♂ (IZCAS), Indonesia, Sulawesi, mountain in Palopo, 2°59.9210'S, 120°08.5650'E, 465 m, 2.IX.2017, H. Liu & Z. Chen. Paratype: 1♀ (IZCAS), same data as holotype.
Etymology
The species name is an adjective referring to the type locality.
Diagnosis
Males of P. palopoensis sp. nov. can be distinguished from all other species of the genus by the swollen ovate shape of the bulb bearing a short embolus distally (Fig. 15B), 5 times shorter than the length of the tegulum (vs. absence of the extreme length difference of the embolus and tegulum in congeners), and relatively pale color of the male and female; female can be distinguished by widely separated, short, digitiform spermathecae (Fig. 14A).
Description
Male (Holotype). Total length 1.41; carapace 0.55 long, 0.63 wide; abdomen 0.86 long, 0.50 wide. Carapace round and pale brown, with trident brown stripes medially and brown patches laterally (Fig. 14C). Chelicerae pale brown (Fig. 29C). Clypeus slanting, purplish. Endites purplish, light brown basally. Labium purplish, delimiting pair of light brown circular dots. Sternum purplish. Abdomen elongated, dorsum with indistinct dark brown pattern posteriorly, antero-ventrally brown with semi-circular patch, posterior with dark brown pattern delimiting light brown dotted vertical lines laterally and V-shaped medially. Legs uniformly brown; measurements: I 5.72 (0.55, 0.16, 1.88, 2.13, 1.00), II 5.78 (1.60, 0.20, 1.60, 1.63, 0.75), III missing, IV 8.33 (2.19, 0.25, 2.60, 2.20, 1.09). Palp (Fig. 15A–D): femur slender, 5 times longer than patella; patella not swollen; tibia 2 times shorter than femur; cymbium almost as wide and long as tibia, with protrusion; bulb pale brown, bulging ovate with embolus arising distally; embolus thinly, sheet-liked, 5 times shorter than entire length of tegulum (Fig. 15B).
Female (Paratype). General features and coloration similar to those of male (Fig. 14D, E). Measurements: total length 1.49; carapace 0.55 long, 0.60 wide; abdomen 0.94 long, 0.55 wide. Leg measurements: I 8.27 (2.19, 0.20, 2.50, 2.25, 1.13), II 6.28 (1.75, 0.25, 1.65, 1.75, 0.88), III 4.30 (1.30, 0.20, 1.40, 1.20, 0.20), IV 6.91 (1.88, 0.23, 2.00, 1.80, 1.00). Endogyne (Fig. 14A): widely spaced, digitiform spermathecae, ratio of length of spermatheca and the interdistance of digitiform spermathecae –1:10 (Fig. 14A).
Distribution
Known only from the type locality (Fig. 30).
Original Description
- Chang, W; Li, S; 2020: Fourteen new species of the spider genus Psiloderces Simon, 1892 from Southeast Asia (Araneae, Psilodercidae) ZooKeys, 902: 61-105. doi
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