Trilacuna manhao Tong & Li sp. nov.

Figs 2, 3, 4, 5, 6 A, B Common name: 蔓耗三窝蛛

Type material.

Holotype China • ♂ (SYNU -902); Yunnan Prov., Honghe Hani and Yi Auton. Pref., Gejiu City, Manhao Town, Lvshuihe Tropical Rainforest Reserve; 23°1'32.1"N, 103°24'3.78"E, 477 m elev.; 19.V.2015; Z. Chen & Y. Li leg. Paratypes. China • 3 ♀ (SYNU -F-3618 –3620); Yunnan Prov., Gejiu City, Manhao Town, Lvshuihe Tropical Rainforest Resort; 23°2'32.64"N, 103°24'44.28"E, 498 m elev.; 2.VI.2018; X. Zhang leg.

Etymology.

The specific name is a noun in apposition taken from the type locality.

Diagnosis.

The new species is similar to T. longling in the shape of bulb, the small dark spot on male epigastric region and the rugose sternal surface, but can be distinguished by the sternum with two clusters of short, thick setae on posterior part (Fig. 2 D) vs. lacking, but with many rows of small ridges (Tong et al. 2019: fig. 13 E), the cymbium with two extremely long, flat setae (Fig. 4 A, C, E, H) vs. lacking (Tong et al. 2019: fig. 14 A), and the anterior margin of female postgastric scutum smoothly curved (Fig. 6 A) vs. with a small notch at middle (Tong et al. 2019: fig. 24 I).

Description.

Male. Body: yellow-brown, legs yellow; habitus as in Fig. 2 A, C, E; body length 1.48. Carapace (Fig. 2 B, F): 0.74 long, 0.59 wide; sides granulate. Eyes (Fig. 2 B, H): well developed; ALE largest, PLE smallest; posterior eye row recurved from above, procurved from front; ALE separated from edge of carapace by 1.1 times diameters. Mouthparts (Figs 2 D, 3 G): endites distally branched. Sternum (Fig. 2 D): surface strongly rugose, with two clusters of short, thick setae. Abdomen (Fig. 2 A, C, E, G): 0.69 long, 0.54 wide; sperm pore situated in front of anterior spiracles; apodemes present, posterior spiracles connected by shallow groove; with small spot situated between anterior and posterior spiracles. Palp (Figs 3 A – F, 4 A – I): yellow; 0.49 long (0.17, 0.09, 0.09, 0.14); femur swollen (width / length = 0.71); tibia about as long as patella; cymbium with 2 very long, curved, flat setae; bulb kidney-shape, base slightly swollen ventrally, tapering apically; psembolus complex, with basal leaf-shaped projection (blp), 1 blade-like lobe (bll), broad median branch (mb) and lateral branch (lb), surrounded by numerous fiber structures.

Female. Same as male except as noted. Body length 1.56; habitus as in Fig. 5 A, C, E. Carapace 0.74 long, 0.59 wide. Abdomen: 0.85 long, 0.67 wide. Epigastric area (Figs 5 G, 6 A): with recurved, strongly sclerotized arches (sar). Endogyne (Fig. 6 B): with narrow, curved transverse sclerite (tsc); with anterior slender stick-shaped sclerite (as) and posterior small globular structure (glo); transverse bars (tba) with pair of short lateral apodemes (ap).

Distribution.

Known only from the type locality, Yunnan Province, China (Fig. 1).