Penestomus croeseri
Penestomus croeseri Dippenaar-Schoeman, 1989
- Araneae
- infraorder Araneomorphae
- Penestomidae
- genus Penestomus
Overview
General 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. 18A). Sternum dusky pale yellow (Fig. 18B). 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. 18A).
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. 16E).
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.
Description
Diagnostic Description
Distinguished by the narrow connection between the AL and the MP, which then becomes a wide plate with convex lateral margins (Fig. 16E). Male unknown.
Size
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:
Leg I
Femur: 1.14
Patella: 0.59
Tibia: 0.75
Metatarsus: 0.75
Tarsus: 0.37
Total: 3.59
Leg II
Femur: 1.08
Patella: 0.54
Tibia: 0.70
Metatarsus: 0.67
Tarsus: 0.30
Total: 3.29
Leg III
Femur: 0.86
Patella: 0.51
Tibia: 0.56
Metatarsus: 0.51
Tarsus: 0.19
Total: 2.62
Leg IV
Femur: 1.30
Patella: 0.70
Tibia: 1.10
Metatarsus: 0.78
Tarsus: 0.24
Total: 4.11
Pedipalp
Femur: 0.62
Patella: 0.22
Tibia: 0.25
Metatarsus: —
Tarsus: 0.48
Total: 1.57
Ecology and Distribution
Distribution
Known from Eastern Cape Province, South Africa.


