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Agyneta issaqueena new species Figs 557–561, map 37 Type material: Male holotype from South Carolina, Pickens County, Wildeat Creek picnic area near Lake Issaqueena, 700’ elev., 34º 45.53N, 82º 52.24W, 18 July 1998, I. Agnarsson (USNM). EXAMINED. Etymology: The specific name is a noun in apposition taken from the type locality, Lake Issaqueena, South Carolina, USA. Diagnosis: Male are easily diagnosed from all Agyneta by their elongated, cylindrical abdomen (Fig. 561) and the presence of a large basal protuberance of the palpal tibia (Fig. 557 arrow). Description: Male: Total length 1.74; carapace length 0.78, width 0.53. CEPHALOTHORAX: Carapace light orange-brown, shiny, finely reticulate; suffused with dark gray along margin, radiating lines; trident mark present. Sternum orange-brown suffused with dark gray. Clypeus height 2. Chelicerae light yellow-orange, excavated; ~ 10 seta-tipped tubercles; promargin four teeth, retromargin three denticles, promargin without, retromargin with rounded projection near base of fang. Cheliceral stridulatory organ ~49 striae, narrowly spaced throughout. ABDOMEN: Cylindrical, light gray apically, basally darker (Fig. 561). LEGS: Yellow, basal part of femurs I-IV and distal half of tibia I dark gray; leg I total length: 2.33; leg III total length: 1.65; Tm I: 0.22, Tm IV: absent. GENITALIA: Retrolateral tibial apophysis pointed, with a round rugose bulge; dorsal tibial apophysis absent; tibia bearing large protuberance dorso-basally; one retrolateral trichobothria and one dorsal (Fig. 557). Cymbium pointed; glabrous depression present (Fig. 557); dorsal cymbial tubercle sharply pointed; ventral tubercle pointed, both slightly rugose; prolateral notch absent (Fig. 558). Paracymbium apical pocket short, anterior pocket short and strongly curved making a small cover, posterior pocket absent (Fig. 557). Embolus tip rounded; basally with large flange and prong; Fickert’s gland situated basally, slightly enlarged; ventral lamella narrow, pointed and serrated; thumb short, reaching well below the embolus proper (Fig. 559). Embolus proper set apically on a vertical ridge with large associated prong, dorsal part larger (Fig. 559) Anterior terminal apophysis narrow, tip with no protrusions; posterior terminal apophysis small, curved, excavated; lamella characteristica large, rugose ending in a sharp hook-shaped prong (Fig. 560). Female: Unknown. Other material examined: USA: Tennessee: Catoosa Wildlife Management Area, half way between Catoosa and Daddy’s creek, 9.viii. 19811, near road, flat rocks in xeric habitat near woods, 13, L. Sorkin (AMNH). Distribution: Southeastern USA.
Published as part of Dupérré, Nadine, 2013, Taxonomic revision of the spider genera Agyneta and Tennesseellum (Araneae, Linyphiidae) of North America north of Mexico with a study of the embolic division within Micronetinae sensu Saaristo & Tanasevitch 1996, pp. 1-189 in Zootaxa 3674 (1) on pages 168-169, DOI: 10.11646/zootaxa.3674.1.1, http://zenodo.org/record/283954
Agyneta issaqueena, Arthropoda, Linyphiidae, Arachnida, Animalia, Araneae, Agyneta, Biodiversity, Taxonomy
Agyneta issaqueena, Arthropoda, Linyphiidae, Arachnida, Animalia, Araneae, Agyneta, Biodiversity, Taxonomy
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