Purcelliana Cooke, 1964

Rodrigues, Bruno V. B. & Rheims, Cristina A., 2020, An overview of the African genera of Prodidominae spiders: descriptions and remarks (Araneae: Gnaphosidae), Zootaxa 4799 (1), pp. 1-80 : 36-37

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Purcelliana Cooke, 1964


Genus Purcelliana Cooke, 1964

Purcelliana Cooke, 1964: 282 (Type species by monotypy, Purcelliana problematica Cooke, 1964 ).

Diagnosis. Species of Purcelliana are distinguished from those of other Prodidominae genera by the presence of short clavate setae on the carapace, chelicerae, legs and abdomen ( Figs 26A View FIGURE 26 , C–E) and by having legs I markedly longer than the other legs ( Fig. 26B View FIGURE 26 ). Males are distinguished by the short embolus arising from the tegulum at 10 o’clock position ( Figs 30 View FIGURE 30 A–D, 31B, E, 32B), and females by the epigyne with a pair of V-shaped copulatory openings and a triangular posterior median depression ( Figs 32E View FIGURE 32 , 33D View FIGURE 33 ).

Description. Total length of males 1.68–3.3 and females 1.92–3.76. Carapace approximately as wide as long, slightly narrow at cephalic region ( Figs 26A, B View FIGURE 26 ). Fovea absent. Eight eyes; posterior eye row strongly procurved, anterior eye row approximately straight ( Figs 26A, D, E View FIGURE 26 ); PME and PLE irregular; AME dark; AME–ALE, PME– PLE, ALE–PLE contiguous. Chilum absent. Chelicerae relatively small (0.23–0.6), without boss ( Fig. 26D View FIGURE 26 ) or teeth ( Figs 27D, E View FIGURE 27 ); long fang without shaft serrula ( Fig. 27E, F View FIGURE 27 ); dorsal surface of paturon with clavate setae erect, resembling spines ( Fig. 26D View FIGURE 26 ). Endites anteriorly convergent, with few hairs on internal margin, distal margin smaller than basal margin, longitudinal groove in prolateral edge and serrula absent ( Figs 26D View FIGURE 26 , 27C, D View FIGURE 27 ); labium approximately as wide as long ( Figs 26D View FIGURE 26 , 27C View FIGURE 27 ). Sternum longer than wide, anterior margin straight, rebordered anteriorly and laterally; posterior region strongly protruding between coxae IV, with numerous long and erect setae ( Fig. 26F View FIGURE 26 ); intercoxal setae absent and precoxal triangles present. Pedicel with anterior region truncate. Leg formula 1423. Legs without spines, except the ventral tarsus with clustered clavate setae, resembling spines. Trichobothria present on dorsal tibiae, metatarsi and tarsi, arranged in two rows; bothrium with three ridges on proximal plate ( Fig. 28C View FIGURE 28 ). Tarsal organ capsulate, with rounded opening, located dorsally and distally on tarsi ( Fig. 28D View FIGURE 28 ). Two smooth claws ( Fig. 28A View FIGURE 28 ); dense claw tufts of tenent setae inserted in well-delimited plate; solid claw tuft clasper present ( Fig. 28B View FIGURE 28 ). Abdomen oval, longer than wide ( Figs 26A, B View FIGURE 26 ); dorsum of abdomen without curved setae anteriorly. Six spinnerets; ALS as long as wide, almost contiguous ( Figs 26G, H View FIGURE 26 , 29A, B, E View FIGURE 29 ), piriform gland spigots elongated, with associated setae ( Figs 29B, C View FIGURE 29 ), major ampulate gland spigot field on well-defined conical structure ( Fig. 29C View FIGURE 29 ), male with one major ampulate gland spigot and female with two; PLS and PMS short, PLS larger than PMS ( Fig. 26H View FIGURE 26 ); PMS and PLS with claviform setae ( Fig. 29D View FIGURE 29 ); PLS in males and females apparently only with one minor ampulate gland spigot ( Figs 29D, F View FIGURE 29 ), without aciniform gland spigots and cylindrical gland spigot; PMS with apparently two aciniform gland spigots. Female palp: tarsus truncated, with apical chemosensory patch, without claw ( Figs 28E, F View FIGURE 28 ). Male palp: femur unmodified, without spines; tibia short, less than half cymbium length. Two RTAs, vRTA straight and dRTA pointing retrolaterally; cymbium with apical scopula ( Fig. 30B View FIGURE 30 ); bulb ovoid, with tegular laminar extension in distal part ( Fig. 30D View FIGURE 30 ); sperm duct with terminal part narrow ( Figs 32B View FIGURE 32 , 33A View FIGURE 33 ); embolus insertion fused to tegulum ( Figs 30A, D View FIGURE 30 , 31A, D View FIGURE 31 , 32A View FIGURE 32 ); conductor small and hyaline, arising at 12 o’clock position ( Figs 30D View FIGURE 30 , 32B View FIGURE 32 , 33A View FIGURE 33 ). Vulva: copulatory ducts convoluted; secondary spermathecae absent; primary spermathecae inconspicuous; fertilization ducts laterad ( Figs 32F View FIGURE 32 , 33E View FIGURE 33 ).

Distribution. Namibia and South Africa ( Fig. 34 View FIGURE 34 ).

Composition. Four species: Purcelliana cederbergensis sp. nov., P. kamaseb sp. nov., P. khabus sp. nov. and P. problematica Cooke, 1964 .












Purcelliana Cooke, 1964

Rodrigues, Bruno V. B. & Rheims, Cristina A. 2020


Cooke, J. A. L. 1964: 282