Bannana parvula, Tong, Yanfeng & Li, Shuqiang, 2015

Tong, Yanfeng & Li, Shuqiang, 2015, One new genus and two new species of oonopid spiders from Xishuangbanna Rainforest, southwestern China (Araneae, Oonopidae), ZooKeys 494, pp. 1-12 : 5-7

Taxon classification Animalia Araneae Oonopidae

Bannana parvula sp. n.

Type material.

Holotype: male (IZCAS Ar-25067), China: Yunnan Province, Mengla County, Menglun Nature Reserve, Secondary tropical seasonal moist forest (21°54.607'N, 101°17.005'E, Alt: 633 m), pitfall traps, 16-31 March 2007, G. Zheng and Z. Chen leg. Paratypes: 1 female (IZCAS Ar-25071), searching, same data as holotype; 1 male (IZCAS Ar-25068), Primary tropical seasonal rainforest (21°57.445'N, 101°12.997'E, Alt: 744 m), searching, 19-25 December 2006; 1 female (IZCAS Ar-25066), Secondary tropical seasonal moist forest (21°54.718'N, 101°16.940'E, Alt: 645 m), pitfall traps, 16-31 March 2007; 1 female (IZCAS Ar-25070), Rubber-tea plantation (21°55.551'N, 101°16.923'E, Alt: 561 m), searching, 19-26 May 2007; 1 female (IZCAS Ar-25069), Rubber plantation (21°54.684'N, 101°16.319'E, Alt: 585 m), searching, 5-12 January 2007.

Etymology.

The specific name is Latin, “parv-” = small, referring to the very small body size of this species.

Diagnosis.

Males of the new species are similar to those of Dysderoides kanoi Grismado & Deeleman, 2014, but can be distinguished by the small size and the ear-shaped protrusion on distal part of bulb (compare Fig. 6 A–C and Grismado et al. 2014: fig. 10 G–I); females can be distinguished from Bannana crassispina sp. n. by the large dorsal abdominal scutum and the rectangular postepigastric scutum (Fig. 5E, I).

Description.

Male. Body yellow, legs lighter. Habitus as in Fig. 4A. Body length 1.07; carapace 0.51 long, 0.38 wide; abdomen 0.62 long, 0.34 wide. Carapace oval, pars cephalica almost flat in lateral view, dorsal surface smooth; sides reticulated; lateral margin rebordered; no eye remnants visible (Fig. 4B, C). Mouthparts: chelicerae straight, paturon inner margin unmodified; labium anterior margin deeply incised (ldi) (Fig. 4E); endites slender, distally only slightly branched. Sternum: setae sparse, light, needle-like, evenly scattered. Abdomen: dorsal scutum covering full length of abdomen, no soft tissue visible from above, not fused to epigastric scutum. Pedicel tube short, unmodified. Book lung covers round, surface smooth. Postepigastric and epigastric scutum fused, apodemes absent, posterior spiracles connected by groove (Fig. 4F). Leg spines: tibiae I, II with 3 pairs of ventral spines each; metatarsi I, II with 2 pairs of ventral spines each, legs III and IV without spines.

Male genitalia: epigastric region (Fig. 4F) with sperm pore small, oval, rebordered, situated between anterior and posterior spiracles. Palp (Fig. 4 H–J): pale-orange; femur slightly enlarged, attached to patella basally; cymbium not fused with bulb, with scattered setae; bulb pear shaped, about twice as long as cymbium, stout, tapering apically; embolus system (Fig. 6 A–C) complicated, with a narrow, ear-shaped protrusion (esp) prolaterally, surface of the protrusion bearing numerours spinules, with a filiform, long and mesially curved projection (ffp) and a narrow branch (nb) retrolaterally.

Female: as in male except as noted. Habitus as in Fig. 5A, B, E, F. Body length 1.12; carapace 0.50 long, 0.39 wide; abdomen 0.65 long, 0.32 wide. Abdomen: dorsal scutum covering about 5/6 of abdomen, about equal to the abdomen width (Fig. 5E). Postepigastric scutum rectangular, posterior margin nearly straight, not fused to epigastric scutum (Fig. 5G).

Female genitalia: ventral view (Figs 5I, J, 6D): posterior margin of epigastric scutum with two dark brown knobs (dkn); surface without external features. Dorsal view (Figs 5K, 6E): with a nearly round posterior receptacle (pr), extending anterior by a narrow, stick-like sclerite (sls); with short apodemes (apo).

Distribution.

Known only from the type locality.