Jumping spiders (Araneae: Salticidae) of the Ndumo Game Reserve, Maputaland, South Africa
Author
Wesolowska, Wanda
Author
Haddad, Charles R.
text
African Invertebrates
2009
2009-06-30
50
1
13
103
journal article
2305-2562
Nigorella plebeja
(L.
Koch, 1875
)
Figs 127–131
,
220
Euophrys plebeja
: L.
Koch 1875: 90
, pl. 7, fig. 9.
Pachypoessa albimana
: Simon 1902
b
: 399
.
Philaeus manicus
: Peckham & Peckham, 1903: 205
, pl. 24, fig. 1.
Pachypoessa plebeja
: Prószyński 1987: 71–72
.
Nigorella plebeja
: Wesolowska & Tomasiewicz 2008: 35
.
Redescription:
Measurements (male/female): Carapace length 3.5–3.7/4.4–4.7, width 2.8–3.0/3.1–3.6, height 1.2–1.5/1.7–1.8. Abdomen length 3.4–3.9/6.4–6.6, width 2.1–2.4/4.2–4.7. Eye field length 1.3–1.4/1.6, anterior width 2.0–2.1/2.1–2.3, posterior width 2.1–2.2/2.4– 2.7.
Male.
General appearance in
Fig. 220
. Medium-sized, dark, hairy spider; carapace oval, medium high, gently sloping posteriorly, dark brown; eye field short, black; fovea visible; dark, short hairs densely cover carapace, with numerous long bristles near eyes; clypeus low, dark, with black hairs. Chelicerae large, black, unidentate; endites and labium dark brown with narrow whitish margins.Abdomen narrower than carapace, dark brown with traces of lighter patches medially; dense long dark hairs on abdomen; venter dark, with four longitudinal lines composed of yellowish dots; spinnerets dark. Legs dark brown; first pair of legs slightly stouter than others, with dark scopulae on tarsi; leg hairs long, dark brown. Pedipalp dark; tibial apophysis straight, tegulum rounded, with small anterior haematodocha (
Figs 127, 128
); embolus short, enveloped by tegular apophysis (
Fig. 129
).
Female.
Larger than male. General colouration dark brown to black, vicinity of fovea slightly lighter; whole body covered with short, dark hairs; clypeus with few white hairs; three parallel lighter bands on ‘cheeks’, below anterior lateral eyes. Labium with narrow white tip, endites with wide pale inner margins. Abdomen broader than carapace, brownish grey, pattern formed by a patchwork of small dark patches; venter dark, with four longitudinal lines formed with light dots. Epigyne strongly sclerotised, with two widely spaced rounded depressions and broad posterior pocket (
Fig. 130
); internal structure simple, initial part of seminal ducts with very thick walls (
Fig. 131
).
Figs 127–131.
Nigorella plebeja
: (127) palpal organ, ventral view; (128) palpal organ, lateral view; (129) embolic division, ventrolateral view; (130) epigyne; (131) internal structure of epigyne.
Material examined: 1^Crocodile Farm, Pongola
R
. floodplain,
26
°
54.426'S
:
32
°
19.185'E
,
A. xanthophloea
bark,
6.vii.2004
(
NMSA 21875
)
;
1^Near Fontana Camp,
26
°
52.072'S
:
32
°
09.545'E
,
A. tortilis
savannah, leaf litter,
8.vii.2004
(
NCA 2008
/2743); 1ơ Near Environmental
Centre
,
26
°
55.275'S
:
32
°
17.947'E
, broadleaf savannah, leaf litter,
6.ii.2005
(
NCA 2008
/2744); 1ơ Northern shore of Nyamiti Pan,
26
°
53.192'S
:
32
°
18.272'E
, under logs,
7.vii.2002
(
NCA 2008
/2745)
.
Distribution: Species known from
the Democratic Republic of the Congo
; recorded for the first time from
South Africa
.
Habitat and biology: This species was collected from the ground in leaf litter or under logs, and on one occasion from under bark, in
AS
, AX, BW and FP.
Remarks: The species is very similar to
N. aethiopica
Wesolowska & Tomasiewicz, 2008
, but is smaller; the male differs by the shape of the tibial apophysis, which is longer and has a single tip (bifid in
N. aethiopica
), and the female epigyne has a strongly sclerotised initial part of the seminal ducts (compare
Figs 128 and 131
herein with figs 134 and
142 in
Wesolowska & Tomasiewicz 2008).