Taxonomic revision of the spider family Penestomidae (Araneae, Entelegynae)
Author
Miller, Jeremy A.
Author
Griswold, Charles E.
Author
Haddad, Charles R.
text
Zootaxa
2010
2534
1
36
http://www.mapress.com/zootaxa/2010/f/zt02534p036.pdf
journal article
zt02534p036
8F657D94-8DD3-4184-BB90-A43C3268DF42
Penestomus croeseri
Dippenaar-Schoeman, 1989
Figs
16E
, 16F, 18A, 18B, 21
Penestomus croeseri
Dippenaar-Schoeman, 1989
: 132, figs 1, 3-5
.
Type material.
Holotype
: ♀ (with
2 ♀
paratypes
),
Grahamstown
[
Eastern Cape
],
South Africa
,
33°19'S
26°32'E
,
500 m
,
1 January 1980
, in riverine bush from soil surface,
P. Croeser
,
P. Hawkes
(
AcAT 87/249
,
NCA
).
Paratypes
: ♀, same data as holotype (
AcAT 87/249a
,
NCA
)
;
♀, same data as holotype (
AcAT 87/ 249b
,
NCA
)
.
Diagnosis. Female distinguished by the narrow connection between the AL and the MP, which then becomes a wide plate with convex lateral margins (Fig.
16
E
). Male unknown.
Description. Carapace red-brown, lighter posteriorly with smooth texture, with sparse fine black setae and broad white setae mostly at margin and fovea region (Fig. 18
A
). Sternum dusky pale yellow (Fig. 18
B
). Chelicerae red-brown, with six promarginal teeth, three retromarginal teeth; with fine black setae only. Legs brown basally, anterior legs red-brown distally, posterior legs pale yellow distally. Abdomen medium gray dorsally without light dorsolateral patches, covered by fine black setae, broad white setae around margin (Fig. 18
A
).
FIGURE 18. Habitus images of female
Penestomus
species. A, B,
P. croeseri
Dippenaar-Schoeman, 1989
from Grahamstown, South Africa (AcAT 87/249). C, D,
P. stilleri
(Dippenaar-Schoeman, 1989) from Winterhoek, South Africa (SAM-ENW-B002686). A, C, dorsal view; B, D, ventral view. Scale bars =
0.2 mm
.
Epigynum
. Subpentagonal, clearly differentiated from surrounding cuticle. AL a half oval, connected to MP by narrow waist; MP a wide plate with convex lateral margins; MP/PL complex approximately 1/3 length of epigynum, much wider posteriorly than anteriorly. PA only marginally less sclerotized than the rest of the epigynum, separated from AL by groove (Fig.
16
E
).
Female macrosetae: Leg I: femur d1, tibia v1-2, metatarsus v1-2 -2; leg II: femur d1, tibia v1, metatarsus v1-2; leg III: femur d1, tibia v1, metatarsus v1-2; leg IV: femur d1, metatarsus v1-2; tarsus r1.
Paratype
female (AcAT 87/249): Total length 5.0, carapace 2.13 long, 1.59 wide, 0.53 high, sternum 1.25 long, 0.72 wide. Leg measurements:
| - |
I |
II |
III |
IV |
Pedipalp |
| Femur |
1.14 |
1.08 |
0.86 |
1.30 |
0.62 |
| Patella |
0.59 |
0.54 |
0.51 |
0.70 |
0.22 |
| Tibia |
0.75 |
0.70 |
0.56 |
1.10 |
0.25 |
| Metatarsus |
0.75 |
0.67 |
0.51 |
0.78 |
- |
| Tarsus |
0.37 |
0.30 |
0.19 |
0.24 |
0.48 |
| Total |
3.59 |
3.29 |
2.62 |
4.11 |
1.57 |
Distribution. Known from Eastern Cape Province, South Africa (Fig. 21).