Parabomis pilosus, Dippenaar-Schoeman & Foord, 2020

Dippenaar-Schoeman, Anna S. & Foord, Stefan H., 2020, Revision of the Afrotropical crab-spider genus Parabomis Kulczyński, 1901 (Araneae: Thomisidae), Zootaxa 4899 (1), pp. 161-174 : 170-171

publication ID

https://doi.org/10.11646/zootaxa.4899.1.8

publication LSID

lsid:zoobank.org:pub:A0C2249D-1099-4F9E-80F2-04A3770E8744

DOI

https://doi.org/10.5281/zenodo.4400910

persistent identifier

https://treatment.plazi.org/id/03CF87B1-FFA0-274A-76BF-DAF1FDEDFC8C

treatment provided by

Plazi

scientific name

Parabomis pilosus
status

sp. nov.

Parabomis pilosus   sp. nov.

Figures 1, 2 View FIGURES 1–3 , 21 – 25 View FIGURES 21–25

Etymology. The name refers to the numerous setae on the carapace of the species.

Diagnosis. The male of this species differs from all the other congeners by the blunt RTA ( Fig. 23 View FIGURES 21–25 ) vs. pointed in other species. In the female, the epigyne atrium is bell-shaped ( Fig. 24 View FIGURES 21–25 ) and contrasts with that of P. martini   , which is subtriangular. Carapace and abdomen bearing rows of flat-lying translucent club-shaped setae that are longer and denser than in other species, especially on the carapace declivity ( Fig. 22 View FIGURES 21–25 ).

Description. Male (holotype). TL 1.7; CL 0.9; CW 1.0. Legs: I 1.43 (0.51, 0.13, 0.30, 0.27, 0.22); II 1.43 (0.63, 0.22, 0.28, 0.20, 0.10); III 1.09 (0.34, 0.12, 0.32, 0.21, 0.10); IV 1.32 (0.47, 0.15, 0.32, 0.19, 0.19). Carapace dark brown, granular, with numerous white club-shaped setae ( Fig. 21 View FIGURES 21–25 ); carapace edge white; eyes circled with black; chelicerae dark brown; mouthparts yellowish brown; carapace wider than long. Sternum orange brown, granulose, bearing numerous strong flat-lying translucent setae. Legs with coxae, trochanters and tibiae brown, with white articulations. Abdomen broad, dorsum dark brown, shield-like, with pale patches; granular. Palp: RTA not pointed but with blunt broad apex ( Fig. 23 View FIGURES 21–25 ); VTA absent.

Female. TL 2.6; CL 1.05; CW 1.3; CH 1.4; AW 2.1; AL 2.1. Legs: Legs: I 1.88 (0.65, 0.29, 0.42, 0.25, 0.27); II 1.81 (0.60, 0.26, 0.43, 0.24, 0.28); III 1.20 (0.42, 0.21, 0.26, 0.12, 0.19); IV 1.7 (0.55, 0.46, 0.26, 0.31, 0.12). Carapace fawn with clypeus and eye region infused with brown, lateral edges darker brown; chelicerae and mouthparts yellowish white; posterior declivity clothed with numerous white flat-lying club-shaped setae ( Figs 1-2 View FIGURES 1–3 , 22 View FIGURES 21–25 ). Sternum yellowish white. Legs fawn to brown infused with white; femora darker, especially legs II and III; articulate area of each leg segment with white rim. Abdomen fawn to white, with faint spots; depressions on abdomen darker, bearing two brownish triangular to round patches. Epigyne: atrium bell-shaped ( Fig. 24 View FIGURES 21–25 ); spermathecae oval, spermathecal ducts short, glandular lobes anteriorly of spermathecae ( Fig. 25 View FIGURES 21–25 ).

Type material. Holotype ³: BOTSWANA: Okavango Delta , Shakawe Fishing Camp, 18°26’S, 21°54’E, leg. J. van Niekerk, 1.XII.2001 (active searching) ( NCA 2006 /868). GoogleMaps  

Paratypes: BOTSWANA: Okavango Delta , Xugana Island , 130 km NNW of Maun, 19°04’S, 23°03’E, leg. B.H. Lamoral, 17–25.XI.1980, 1♀ ( NMSA 23719 View Materials ); GoogleMaps   Okavango Delta, 30 km N of Lechwee Camp, approx. between 18°40’S– 19°00’S and 23°00’E– 23°45’E, leg. B. Lamoral, 17-20.XI.1979, 1³ ( NMSA); GoogleMaps   Okavango Delta, N of Lechwee Camp and Khwai River Lodge, between 18°40’S– 19°00’S and 23°00’E– 23°45’E, leg. B. Lamoral, 18- 20.XI.1979, 2³ ( NMSA); GoogleMaps   Okavango Delta, near Shakawe, Lesideng Research Camp, 18°25’S, 21°53’E, leg. R. Lyle , 10-20.XII.2006 (beating shrubs in riverine forest), 1♀ ( NCA 2020 /550) GoogleMaps   .

Other material examined. BOTSWANA: Okavango Delta, Xugana Island , 130 km NNW of Maun, 19°04’S, 23°03’E, leg. F. Nyathi, 17-25.XI.1980, 1♀ ( NMZ / A 70941 View Materials ) GoogleMaps   . SOUTH AFRICA: Limpopo Province: Tshipise, Farm Alicedale (citrus), 22°42’S, 30°14’E, leg. J. Wilkinson, 12.IV.2016 (on tree in silk retreat, see Figs 1-2 View FIGURES 1–3 ), 1♀ ( SANSA Virtual Museum) GoogleMaps   .

Distribution. Known from Botswana and northern South Africa ( Fig. 32 View FIGURES 31–32 ).

Biology/Habitat. Specimens were sampled by sweeping grass and herbs. In Tshipise, a female was sampled from a silk retreat made between leaves.

NMSA

KwaZulu-Natal Museum

R

Departamento de Geologia, Universidad de Chile

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Thomisidae

Genus

Parabomis