Agyneta erinacea, Dupérré, Nadine, 2013

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 : 71-72

Agyneta erinacea new species

Figs 197–201 , map 12

Type material: Male holotype from California, Sonoma County, 1.5mi E Healdsburg on Bailhache Avenue, 13 January 1991, mixed woodland under volcanic rocks, D. Ubick, W. Savary, K. Dabney ( CAS). EXAMINED.

Etymology: The specific name is an adjective in reference to the long spines arising from the retro-ventral surface of the embolus.

Diagnosis: Male are diagnosed from all Agyneta by the pointed, strongly rugose dorsal cymbial tubercle ( Fig. 198 ), from members of the species group by the short spine-like posterior pocket of the paracymbium ( Fig. 197 ) absent, rounded or elongated in other species of the group ( Figs 172 , 185 , 195 , 202 , 209 ).

Description: Male: Total length 2.32; carapace length 1.05, width 0.80.

CEPHALOTHORAX: Carapace light brown, shiny, finely reticulate; lightly suffused with dark gray along radiating lines, pars cephalica and margin. Sternum completely suffused with dark gray. Clypeus height 3. Chelicerae orange, not excavated; promargin three denticles, retromargin two tiny denticles. Cheliceral stridulatory organ easily visible ~36 striae, well spaced. ABDOMEN: Dark gray, with off-white marks ( Fig. 201 ). LEGS: Light yellow; leg I total length: 4.39; leg III total length: 2.93; Tm I: 0.25, Tm IV: absent. GENITALIA: Palpal retrolateral tibial apophysis reduced, small and triangular; dorsal tibial apophysis rugose; one retrolateral and one dorsal trichobothria ( Fig. 197 ). Cymbium with retrolateral fold; glabrous depression present ( Fig. 197 ); dorsal cymbial tubercle rugose and pointed; ventral tubercle small, triangular; prolateral notch shallow ( Fig. 198 ). Paracymbium apical pocket small, anterior pocket absent, posterior pocket spine-like ( Fig. 197 ). Embolus tip pointed; tiny spines ventrally; large spikes retro-ventrally; Fickert’s gland medial, bulbous; ventral lamella basally enlarged into a plate with spines, extending on the retrolateral side of the embolus all the way to the embolus proper, with a row of spines; thumb just reaching the base of embolus proper ( Fig. 199 ). Embolus proper set apically, anterior part serrated reaching the tip of the embolus ( Fig. 199 ). Anterior terminal apophysis long, with numerous, long plumose protrusions; posterior terminal apophysis twisted with one small spine basally; lamella characteristica basally with a twisted branch and a long, dentate curved projection ( Fig. 200 ). Female: Unknown.

Other material examined: USA: California: San Ardo, 1955, 13, McDonald, Blodget ( AMNH). Distribution: California, USA.

Figures

FIGURES 195 – 201. 195, 196. Agyneta emertoni (Roewer 1942). 195, 196, Male. 195. Palp, retrolateral view. 196. Palp, prolateral view. 197 – 201. Agyneta erinacea n. sp. 197 – 201, Male. 197. Palp, retrolateral view. 198. Palp, prolateral view. 199. Embolus, prolateral view. 200. Radical division, retrolateral view. 201. Abdomen, dorsal view.

FIGURES 172 – 180. Agyneta fillmorana (Chamberlin 1919). 172 – 177, 179, 180, Male. 178, Female. 172. Palp, retrolateral view. 173. Palp, prolateral view. 174. Embolus, prolateral view. 175. Radical division, retrolateral view. 176. 177. 178. Abdomen, dorsal view. 179. Cephalothorax (enlarged morph), anterior view. 180. Cephalothorax (normal morph), anterior view.

FIGURES 185 – 194. Agyneta darrelli n. sp. 185 – 189, Male. 190 – 194, Female. 185. Palp, retrolateral view. 186. Palp, prolateral view. 187. Embolus, prolateral view. 188. Radical division, retrolateral view. 189. 190. Abdomen, dorsal view. 191. Epigynum, ventral view. 192. Internal genitalia, ventral view. 193. Internal genitalia, dorsal view. 194. Distal part of scape, posterior view (arrow points to the connection between the stretcher and the lateral lobe).

FIGURES 202 – 208. Agyneta bucklei n. sp. 202 – 205, Male. 206 – 208, Female. 202. Palp, retrolateral view. 203. Palp, prolateral view. 204. Embolus, prolateral view. 205. Radical division, retrolateral view. 206. Epigynum, ventral view. 207. Internal genitalia, ventral view. 208. Internal genitalia, dorsal view.

FIGURES 209 – 212. Agyneta crawfordi n. sp. 209 – 212, Male. 209. Palp, retrolateral view. 210. Palp, prolateral view. 211. Embolus, prolateral view. 212. Radical division, retrolateral view.