Agyneta regina ( Chamberlin & Ivie 1944 )

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, Zootaxa 3674 (1), pp. 1-189 : 109-110

Agyneta regina ( Chamberlin & Ivie 1944)

Figs 346–353 , map 21

Meioneta regina Chamberlin & Ivie 1944: 90 , f. 183. (Description Ƥ). Agyneta regina Buckle et al. 2001: 101 . (Transferred from Meioneta ).

Type material: Meioneta regina Chamberlin & Ivie 1944 , Ƥ HOLOTYPE from Georgia: 3 miles SE of Savannah, W 81º4’:N 32º4’, April 8, 1943, W. Ivie collector ( AMNH). EXAMINED.

Diagnosis: Males are diagnosed from all other species by their large footh-shaped dorsal cymbial tubercle and triangular ventral cymbial tubercle ( Fig. 347 ). Females are diagnosed from all other Agyneta by their broad median part of scape ( Fig. 352 ).

Description: Male: Total length 1.52; carapace length 0.69, width 0.51.

CEPHALOTHORAX: Carapace light orange-brown, shiny, finely reticulate; suffused with gray margin and radiating lines; sometimes with trident mark. Sternum suffused with gray, darker along margins. Clypeus height 2. Chelicerae light orange-brown; not excavated; seta-tipped tubercles absent; promargin five denticles, retromargin four tiny denticles. Cheliceral stridulatory organ ~16 striae, well spaced throughout. ABDOMEN: Uniformly light gray. LEGS: Light yellow-brown; leg I total length: 2.76; leg III total length: 1.82; Tm I: 0.22; Tm IV: absent. GENITALIA: Palpal retrolateral tibial apophysis long, rugose; dorsal tibial apophysis wide, rounded and smooth; two retrolateral trichobothria and one dorsal ( Fig. 346 ). Cymbium rounded; glabrous depression present ( Fig. 346 ); dorsal tubercle wide, squared and rugose; ventral tubercle long, pointed and smooth; prolateral notch shallow ( Fig. 347 ). Paracymbium apical pocket short, anterior pocket medium, posterior pocket absent ( Fig. 346 ). Embolus tip wide and pointed, with long prong; ventrally rugose; Fickert’s gland absent; ventral lamella absent; thumb reaching the embolus proper tip ( Fig. 348 ). Embolus proper set apically, of equal part ( Fig. 348 ). Anterior terminal apophysis narrow with medial spine and numerous short protrusions, basally with one elongated spur-like prong and one large, blunt one; terminal apophysis long, tip curved; lamella characteristica elongated with wide serrated tip ( Fig. 349 ).

Female: Total length 1.83; carapace length 0.66, width 0.52

CEPHALOTHORAX: Same coloration as male. Clypeus height 2. Chelicerae light orange-brown; promargin six teeth, retromargin five denticles. Cheliceral stridulatory organ visible ~13 striae, well spaced throughout. ABDOMEN: Uniformly light gray. LEGS: Same as in male; palpal segment darker orange-brown, tarsal claw absent; leg I total length: 2.72; leg III total length: 1.80; Tm I: 0.29, Tm IV: absent. GENITALIA: Epigynum with wide, straight, enlarging proximal part of scape; epigynal slits large and oval; pit hook depression indistinguishable ( Fig. 350 ); lateral lobes folded ( Fig. 351 ); stretcher very long; pit deep ( Fig. 353 ). Median part of scape extremely wide ( Fig. 352 ); genital pores situated at base of lateral lobes pockets ( Fig. 353 ). Internal genitalia with a rounded ventral receptacula and an oval dorsal one ( Figs 352, 353 ).

Other material examined: USA: Louisiana: St. Gabriel, 01.vii.1972, 432Ƥ, 23.vii.1972, 433Ƥ, 09.viii.1972, 632Ƥ, 05.ix.1971, 131Ƥ, 21.ix.1972, 431Ƥ, 19.vi.1973, 23, 17.viii.1973, 23, 01.ix.1973, 431Ƥ, pitfalls in bermuda grass pasture, F. Howard ( AMNH); Parks, 11.ix.1963, 23 ( CAS). Texas: Mumford, Holmes Pecan Orchard, 22–29.v.2000, pitfalls in pecan orchard, 33, A. Kouston, 17–24. viii.2001, 13, A. Calixto ( TAMU). Distribution: Southeastern USA west to Texas.

Figures

FIGURES 346 – 353. Agyneta regina (Chamberlin & Ivie 1944). 346 – 349, Male. 350 – 353, Female 346. Palp, retrolateral view. 347. Palp, prolateral view. 348. Embolus, prolateral view. 349. Radical division, retrolateral view (arrow points to spur-like prong). 350. Epigynum, ventral view. 351. Internal genitalia, ventral view. 352. Internal genitalia, dorsal view. 353. Internal genitalia, lateral view.