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 stilleri
(Dippenaar-Schoeman, 1989),
new combination
Figs
8E
, 8F, 16G-I, 18C, 18D, 21
Wajane stilleri
Dippenaar-Schoeman, 1989
: 134, figs 2, 7-8
.
Type material.
Holotype
: ♀ (with
1 juvenile
paratype
),
Paarl Du Toit's Kloof, Donkerkloof
,
Western Cape
,
South Africa
,
33°45'S
18°50'E
,
300 m
,
3 August 1975
, found in silk-lined tunnels under exfoliated section of rock, in a boulder,
M. Stiller
(
AcAT 88/29
,
NCA
)
.
Additional material examined.
SOUTH AFRICA
.
Western Cape
:
3 ♀
5 juveniles
,
Winterhoek
[
33.1°S
,
19.13°E
]
4400-5500 ft
,
20 November 1916
,
Tucker
(
B2686 SAM-ENW-B002686
,
SAM
)
;
2 ♀
,
1 juvenile
,
Winterhoek
[
33.1°S
,
19.13°E
],
5000-5600 ft
,
20 November 1916
,
Tucker
(
B2853 SAM-ENW-B002853
,
SAM
)
.
Diagnosis. Female distinguished by the ovoid, diverging spermathecae (Figs 16
H
,
I
) and PA of the epigynum that are as sclerotized as the AL (Figs
8
E
, 16
G
). Male unknown.
Description. Carapace orange-yellow, lighter posteriorly with smooth texture (Fig. 18
C
). Sternum dusky pale yellow (Fig. 18
D
). Chelicerae orange, with five promarginal teeth, two retromarginal teeth. Legs brown basally, leg I and II orange distally, posterior legs pale yellow distally. Abdomen medium gray dorsally with light dorsolateral patches (Fig. 18
C
). (Most setae lost on specimens so these data are not reported here.)
Epigynum. Subpentagonal, MP/PL complex approximately 1/4 length of epigynum, parallel sided with grooves converging posteriorly, extending only slightly posterior from AL (Figs
8
E
, 16
G
). PA sclerotized, undifferentiated from rest of epigynum.
Female macrosetae: Leg I: femur d1, tibia v2-2, metatarsus v2-2 -2; leg II: femur d1, tibia v1, metatarsus v2-2; leg III: femur d1, tibia v1, metatarsus v1-3; leg IV: femur d1, metatarsus v1-1 -3.
Holotype
female (AcAT 88/29): Total length 3.6, carapace 1.44 long, 0.97 wide, 0.38 high, sternum 0.91 long, 0.50 wide. Leg measurements:
- |
I |
II |
III |
IV |
Pedipalp |
Femur |
0.65 |
0.62 |
0.56 |
0.71 |
0.35 |
Patella |
0.43 |
0.40 |
0.32 |
0.48 |
0.17 |
Tibia |
0.48 |
0.44 |
0.40 |
0.63 |
0.17 |
Metatarsus |
0.43 |
0.40 |
0.33 |
0.46 |
- |
Tarsus |
0.27 |
0.24 |
0.19 |
0.22 |
0.30 |
Total |
2.25 |
2.10 |
1.79 |
2.51 |
1.00 |
Distribution
. Known from Western Cape Province, South Africa (Fig. 21).
Remarks. Dippenaar-Schoeman (1989) reported the absence of a cribellum in this species. Indeed, no cribellum is obvious in the somewhat degraded
type
series specimens, although there is evidence of a broad lobe that could be a cribellum or wide colulus. In the
holotype
, most setae are missing from the legs, including the calamistrum region; in the juvenile
paratype
, both legs IV are broken near the tibia-metatarsus joint. Other specimens (i.e., those from Winterhoek, South Africa;
B
2853, SAM-ENW-B002853), have a well developed cribellum (Fig. 8
F
) and calamistrum.