Penestomus (ANNA S. DIPPENAAR-SCHOEMAN 1989)
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Familia: Eresidae
Genus: Penestomus
Name
Penestomus planus ANNA S. DIPPENAAR-SCHOEMAN, 1989 – Wikispecies link – Pensoft Profile
- Penestomus planus ANNA S. DIPPENAAR-SCHOEMAN, 1989, Phytophylactica 21: 131-134.
Diagnosis
Diagnosis The flattened body, small size and the position of the eyes distinguish Penestomus from other eresids. It differs from Wajane in having a cribellum, no patterns on the abdomen and a slightly different eye pattern.
Description
Description Female. Size: small to medium-sized spiders (4,4 - 7,0 mm). Colour of carapace reddish brown to dark brown; smooth and shiny, with scattered long black setae covering the dorsal surface interspersed by thicker white setae. Carapace longer than wide, subrectangular and flattened, sides subparallel, slightly narrower in caphalic area, posteriorly and anteriorly truncated with clypeus centrally protruding (Fig. 3). Fovea oval, shallow depression. Eyes in two rows, situated close to anterior edge; anterior row straight, posterior row recurved; eyes small, lateral eyes slightly larger than median eyes; MOQ wider than long, narrower in front; ALE situated close to anterior margin; both AME and PME nearer to each other than to lateral eyes; PLE widely spaced (Fig. 1). Chelicerae long, obliquely directed; anterior margin of cheliceral groove with small chiti-nous keel armed with small teeth. Maxillae parallel to each other, longer than wide. Sternum oval, caudally projecting between fourth coxae. Abdomen long oval, slightly depressed dorsally, covered with short black setae, uniformly pale ventrally. Legs short, robust; leg formula 4123; coxae long, especially leg IV; three tarsal claws, paired claws pectinate. Cribellum indistinct, oval, bipartite; calamistrum bi- or uniseriate. Epigynal plate large, reddish brown. Male Unknown.
Distribution
Distribution Known only from the Cape Province, South Africa.
Discussion
Relationship Closely related to Wajane from which it differs in having a cribellum, no pattern on the abdomen and a slightly different eye pattern.
Biology and Ecology
Bionomics Nothing is known of P. planus. Adult females of P. croeseri spec. nov. have been collected from the soil surface in riverine bush in Grahamstown.
Taxon Treatment
- ANNA S. DIPPENAAR-SCHOEMAN; 1989: The African species of the subfamily Penestominae (Araneae: Eresidae): with descriptions of two new species, Phytophylactica 21: 131-134. doi
This treatment was originally uploaded by Plazi, compare this treatment on Plazi. Unless this treatment has been substantially changed on Species-ID, Plazi requests to maintain a link back to the original repository.
