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 megae
sp. nov.
Figures 15
–
20
Etymology.
Named in honour of Ms Meg Cumming (
Harare
,
Zimbabwe
), in recognition of her contribution to our knowledge of Zimbabwean spiders.
Diagnosis.
The species is distinguished from other congeners by the male palp having the RTA straight, with the apex directed dorsally, while directed laterad in others, except for
P. elsae
sp. nov.
It differs from
P. elsae
sp. nov.
by the sharply pointed tip of the apex (
Fig. 18
).
Parabomis megae
sp. nov.
resembles the female of
P. elsae
sp. nov.
in the shape of the epigyne, but the colour differs, being uniform in
P. megae
sp. nov.
and strongly mottled in
P. elsae
sp. nov.
(
Fig. 19
).
Description.
Male (
holotype
).
Measurements: TL 1.90; CL 0.95; CW 1.03. Legs: I 1.44 (0.52, 0.13, 0.30, 0.27, 0.22); II 1.44 (0.63, 0.22, 0.28, 0.20, 0.11); 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 (
Fig. 15
); eyes circled with black; chelicerae dark brown; mouthparts yellowish brown; palp dark brown; carapace slightly wider than long; strongly granulated, bearing numerous small tubercles, each with translucent seta. Sternum brown; granulose. Eyes as for genus. Legs: coxae, trochanters and tibiae brown, with blackish hue; femora I-IV dark brown, with femora I and II usually darker than rest; patellae yellowish brown; tibiae, metatarsi and partly tarsi of legs I and II clothed with numerous fine erect setae. Abdomen dorsum white with brown hue, shield-like with scattered black spots. Male palp with RTA straight, tip directed dorsally and apex pointed (
Fig. 18
).
Female
.
Measurements: TL 3.2; CL 1.1; CW 1.4. Legs: I 1.83 (0.67, 0.29, 0.42, 0.25, 0.27); II 1.84 (0.61, 0.28, 0.43, 0.24, 0.28); III 1.61 (0.41, 0.22, 0.26, 0.12, 0.70); IV 1.71 (0.55, 0.46, 0.27, 0.31, 0.12). Carapace fawn, in some specimens darker laterally (
Figs 16-17
); strongly granulated, bearing numerous small tubercles, each with translucent seta; eye region infused with white; eyes sometimes circled with black; chelicerae creamish white. Sternum granulated, bearing tubercles with seta. Legs creamish white, with distinct white bands at joints; femora frequently darker. Abdomen fawn to white, with scattered dark setae giving it spotted appearance; depressions on dorsum darker, bearing two brownish markings (
Fig. 16
). Epigyne with atrium oval (
Fig. 19
); spermathecae with short ducts (
Fig. 20
).
Type material.
Holotype
³:
ZIMBABWE
:
Doddieburn Dam
,
Doddieburn Ranch
,
21°28’S
,
29°24’E
, leg.
J. Minshull
,
12.XII.1985
(
NMZ
/
A4208
a).
Paratypes
:
ZIMBABWE
:
Doddieburn Dam
,
Doddieburn Ranch
,
21°28’S
,
29°24’E
, leg.
J. Minshull
,
12.XII.1985
,
1♀
, 3³,
4imm.
(
NMZ
/
A4208
b);
Tshowe River
rapids,
Matetsi Safari Area
,
18°31’S
,
28°40’E
, leg.
J. Minshull
,
6.XII.1988
, 1³ (
NMZ
A6916
);
Walmer Drive
,
Harare
,
17°49’S
,
31°05’E
, leg.
M. Cumming
,
14.
VI
.2004 (spider ballooning),
1♀
(
NCA 2012
/327);
Same
locality data
,
leg.
M. Cumming
,
15.I.2004
(sweeping grass and herbs in garden),
1♀
,
3imm.
(
NCA 2012
/326);
Same
locality data
, leg.
M. Cumming
,
1.
III
.2004
,
1♀
(
NCA 2009
/ 258).
FIGURES 15–20.
Parabomis megae
sp. nov.
15 Male habitus, dorsal view; 16 Female habitus, dorsal view; 17 Female habitus, dorsal view; 18 Left palp, ventral view; 19 Epigyne, ventral view; 20 Epigyne, dorsal view. Scales: 1 mm.
Other material examined.
ZIMBABWE
:
Humani Ranch
,
Store Camp
,
20°29’S
,
32°15’E
, leg.
Falcon College
,
6.
IV
.1987
,
1imm.
(
NMZ
A 5882
)
;
Doddieburn Dam
,
Doddieburn Ranch
,
21°28’S
,
29°24’E
, leg.
E. Nyathi
,
20.
IV
.1986
,
2 imm.
(
NMZ
/
A4661
)
;
Same
locality, leg.
J. Minshull
,
11.XII.1985
,
1 imm. ♀
(
NMZ 4227
)
;
Chelo Farm Homestead
, 2029A3, leg.
F. Nyathi
,
5.X.1988
,
5 imm.
(
NMZ 715
)
,
4 imm.
(
NMZ
/
A7190
)
;
Namakukwe
,
Zambezi
confluence,
17°51’S
,
25°23’E
, leg.
Falcon College
,
26.VIII.1986
,
1 imm.
(
NMZ 4794
)
;
Sabi-Lundi
confluence,
Gomarezhou National Park
,
21°23’S
,
33°50’E
, leg.
J. Minshull
,
21.
IV
.1985
,
1 imm.
(
NMZ 3289
)
;
Tshowe River
rapids,
Matetsi Safari Area
18°31’S
,
28°40’E
, leg.
J. Minshull
,
4.XII.1988
(
NMZ 6895
)
;
Katombora
Campsite,
17°50’S
,
25°24’E
, leg.
Falcon College
,
1.X.1986
,
1 imm.
(
NMZ 4720
)
,
1 imm.
NMZ 5040, 1 imm NMZ 5079,
1 imm.
NMZ 5086
);
1.5 km
NW of
Kazuma Forestry
camp, 1825B3, leg.
Falcon College
,
15.
IV
.1988
,
2 imm.
(
NMZ
/
A 6704
)
;
Farm
2 km
E. Glenmore
, 2028C, leg.
F.Nyathi
,
28.IX.1988
,
1 imm.
(
NMZ
/
A 7094
)
;
Sengwa Plot
, leg.
M. Cumming
,
2.XII.2002
(beating
Trichelias
tree), 1³ (
NCA 2009
/456)
.
Distribution.
Known only from
Zimbabwe
(
Fig. 32
).
Biology/Habitat.
Specimens were sampled sweeping grass and herbs. Most of the adult specimens were sampled from December to March.