Plistobunus Pocock, 1903

Zhang, Chao & Martens, Jochen, 2020, A taxonomic study on Epedanidae from Thailand including functional aspects of male genital morphology (Opiliones, Laniatores), ZooKeys 915, pp. 25-58 : 25

publication ID

https://dx.doi.org/10.3897/zookeys.915.47626

publication LSID

lsid:zoobank.org:pub:EA75DB91-3C37-4037-A242-C6F1C144F7CC

persistent identifier

https://treatment.plazi.org/id/9000C3A3-306A-5DB2-B9BF-6DBB8F758C25

treatment provided by

ZooKeys by Pensoft

scientific name

Plistobunus Pocock, 1903
status

 

Plistobunus Pocock, 1903

Plistobunus Pocock 1903: 447; Roewer 1912: 232; 1923: 207; 1938: 124; Lian et al. 2011: 41.

Type species.

Plistobunus rapax Pocock, 1903, by original designation.

Extended diagnosis.

Medium-sized epedanines (2.40-3.57 mm) with a long median spine on the ocularium. Prosoma with a row of 4-6 setiferous tubercles on each side of the frontal margin. Areae II and IV with or without long spines. The basichelicerite of chelicerae elongate and armed with numerous tubercles, dorsally with three in males and with two in female ( Lian et al. 2011: 42, figs 2, 3; 44: 9, 10; 46: 18, 19. Figs 33-35 View Figures 32–39 , 47-49 View Figures 40–54 ). Pedipalpal femur of male ventrally with 9-13 seta-tipped tubercles, and distally with one or two tubercles on medial side. Pedipalpal patella with at least three seta-tipped tubercles. Distitarsus of leg I with two segments. The distal part of pars basalis of penis widened and with a stereoscopic ventral plate. Stylus columnar. Capsula interna ventrally and capsula externa dorsally surround the stylus.

Included species.

Plistobunus rapax Pocock, 1903, Plistobunus columnarius Lian et al., 2011, and Plistobunus jaegeri sp. nov.

Distribution.

China (Hong Kong and Hainan Island), Thailand (Ubon Ratchathani).

Sexual dimorphism.

The species of this genus possess conspicuous sexual dimorphism in the armature of the appendages. The tubercles or spines in male on the basichelicerite of chelicerae, and those of the femur of pedipalps and legs are much more robust or conspicuous than those of in female; the shape of body is very similar in both sexes.

The numbers of seta-tipped tubercles distally on medial side of pedipalpal femur gives an impression of the differences between the species. Male specimens of P. rapax and P. columnarius are described with two ( Lian et al. 2011: 42, fig. 6; 44, fig. 14) and those of P. jaegeri sp. nov. with only one such tubercle (Fig. 38 View Figures 32–39 ). Females of P. columnarius ( Lian et al. 2011: 46, fig. 22) and P. jaegeri sp. nov. (Fig. 52 View Figures 40–54 ) possess no tubercles of this size or position (female of P. rapax unknown).

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Opiliones

Family

Epedanidae

Loc

Plistobunus Pocock, 1903

Zhang, Chao & Martens, Jochen 2020
2020
Loc

Plistobunus

Pocock 1903
1903