Revision of the Afrotropical crab-spider genus Parabomis Kulczyński, 1901 (Araneae: Thomisidae)
Author
Dippenaar-Schoeman, Anna S.
0000-0003-1532-1379
ARC-Plant Health and Protection, Private Bag X 134, Queenswood 0121, South Africa & Department of Zoology, Centre for Invasion Biology, University of Venda, Thohoyandou 0950, South Africa DippenaarA @ arc. agric. za; https: // orcid. org / 0000 - 0003 - 1532 - 1379
Author
Foord, Stefan H.
0000-0002-9195-2562
stefan. foord @ univen. ac. za; https: // orcid. org / 0000 - 0002 - 9195 - 2562
stefan.foord@univen.ac.za
text
Zootaxa
2020
2020-12-30
4899
1
161
174
journal article
8697
10.11646/zootaxa.4899.1.8
90855d8d-93eb-4a4f-a4cf-3c36fdf9c2a5
1175-5326
4400882
A0C2249D-1099-4F9E-80F2-04A3770E8744
Parabomis pilosus
sp. nov.
Figures 1, 2
,
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
) vs. pointed in other species. In the female, the epigyne atrium is bell-shaped (
Fig. 24
) 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
).
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
); 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
); VTA absent.
FIGURES 21–25.
Parabomis pilosus
sp. nov.
21 Male habitus, dorsal view; 22 Female habitus, dorsal view; 23 Left palp, ventral view; 24 Epigyne, ventral view; 25 Epigyne, dorsal view. Scales: 1 mm.
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
,
22
). 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
); spermathecae oval, spermathecal ducts short, glandular lobes anteriorly of spermathecae (
Fig. 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).
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
);
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
);
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
);
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)
.
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
)
.
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
),
1♀
(
SANSA
Virtual Museum)
.
Distribution.
Known from
Botswana
and northern
South Africa
(
Fig. 32
).
Biology/Habitat.
Specimens were sampled by sweeping grass and herbs. In Tshipise, a female was sampled from a silk retreat made between leaves.