Gamasomorpha changning sp. nov.

Materials

Type status: Holotype. Occurrence: recordedBy: Zizhong Yang & Haibo Pu; individualCount: 1; sex: male; lifeStage: adult; occurrenceID: FAA654C1-B9BC-5D3C-9D1B-E08BB91B23DB; Taxon: scientificName: Gamasomorpha changning; order: Araneae; family: Oonopidae; genus: Gamasomorpha; scientificNameAuthorship: Yang, Tong & Yang; Location: country: China; stateProvince: Yunnan; county: Changning; locality: Mangshui Town, Donghoushan Village, under tree bark; verbatimElevation: 1833 m; verbatimCoordinates: 24°54′20.0″N , 99°12′51.9″E; Event: eventDate: 2 - Oct- 2011

Type status: Paratype. Occurrence: recordedBy: Zizhong Yang; individualCount: 1; sex: female; lifeStage: adult; occurrenceID: 0C833DF3-1580-538A-A2E7-43E4E12C2B7A; Taxon: scientificName: Gamasomorpha changning; order: Araneae; family: Oonopidae; genus: Gamasomorpha; scientificNameAuthorship: Yang, Tong & Yang; Location: country: China; stateProvince: Yunnan; county: Dali City; locality: Cangshan Mt., Jishejing, pitfall trapping in forest; verbatimElevation: 2700 m; verbatimCoordinates: 25°34'06.493"N, 100°08'23.914"E; Event: eventDate: 25 - Jul- 2009

Type status: Paratype. Occurrence: recordedBy: Zizhong Yang; individualCount: 1; sex: female; lifeStage: adult; occurrenceID: F56C6E5C-520A-548A-A13A-D895B8B53BF7; Taxon: scientificName: Gamasomorpha changning; order: Araneae; family: Oonopidae; genus: Gamasomorpha; scientificNameAuthorship: Yang, Tong & Yang; Location: country: China; stateProvince: Yunnan; county: Dali City; locality: Cangshan Mt., Jishejing, pitfall trapping in forest; verbatimElevation: 2700 m; verbatimCoordinates: 25°34'06.493"N, 100°08'23.914"E; Event: eventDate: 25 - Jul- 2009

Description

Male. Total length 2.28; carapace 1.01 long, 0.72 wide; abdomen 1.27 long, 0.79 wide. Habitus as in Fig. 1 A, C and E. Body yellowish-brown, legs yellow. Carapace (Fig. 1 B and F): elongated oval, pars cephalica slightly elevated in lateral view; dorsal surface smooth, sides strongly granulated. Eyes (Fig. 1 B and F): ALE largest, PLE and PME subequal; posterior eye row recurved in dorsal view, procurved in anterior view; PME almost touching, separated from PLE by about PME radius; ALE separated by about their radius; ALE separated from edge of carapace by about their diameter. Sternum (Fig. 1 D): longer than wide, with narrow, transverse palpal groove, radial furrows present. Abdomen (Fig. 1 G and H): dorsal scutum ovoid, punctate, densely covered with short setae; booklung covers large; pedicel tube short, without dorsolateral extensions; scuto-pedicel region with scutal ridge. Palps (Fig. 3 A – C and Fig. 4 A – F): pale orange; cymbium not extending beyond distal tip of bulb; bulb distally tapering, ending as round conical extension (ce); embolus (em) long, slender, lamellar, with an opening subapically; embolus positioned adjacent to an embolic accessory appendage (ma) and a lamellar conductor (co).

Female. Total length 2.69; carapace 1.01 long, 0.89 wide; abdomen 1.68 long, 1.05 wide. As in male, except as noted. Epigastric area (Fig. 2 G and Fig. 3 D): externally without special features. Endogyne (Fig. 3 E): receptacle broadly oval, globular appendix (gap) narrow, with anterior paddle-like sclerite (psc) and nail-like process (na), lateral sclerites functioning as muscle attachments.

Diagnosis

The new species is similar to Gamasomorpha barbifera Tong & Li, 2007 in the shape of the palpal bulb, but can be distinguished by the absence of a dense cluster of long setae on the male chelicerae (vs. presence of long setae; Fig. 1 E, F and Tong and Li (2007): figs. 28 and 31), smooth surface of the mesal embolic accessory appendage (vs. a scale-like surface; Fig. 4 A, B and Tong and Li (2007): figs. 34 and 35), a granulated carapace (vs. smooth; Fig. 1 B, Fig. 2 B and Tong and Li (2007): fig. 31) and large booklung covers (vs. very small; Fig. 1 G, H, Fig. 2 G, H and Tong and Li (2007): figs. 28 and 32).

Etymology

The specific name is a noun in apposition, derived from Changning, where the holotype was collected.

Distribution

Known only from the two listed localities (Fig. 5).