Trilacuna mopanshan Tong & Li, 2025

Dai, Chengzhi, Chen, Qiang, Tong, Yanfeng, Bian, Dongju & Li, Shuqiang, 2025, Two new species of Trilacuna Tong & Li, 2007 (Araneae, Oonopidae) from Yunnan Province, China, with a key to all known Trilacuna species of Yunnan, ZooKeys 1248, pp. 17-32 : 17-32

publication ID

https://doi.org/10.3897/zookeys.1248.158273

publication LSID

lsid:zoobank.org:pub:E8CBC485-B23C-49A4-8C50-CE7AB55AFCDE

DOI

https://doi.org/10.5281/zenodo.16738642

persistent identifier

https://treatment.plazi.org/id/82ED2FAD-FD29-5B1F-96B4-46F67F3B01DF

treatment provided by

ZooKeys by Pensoft

scientific name

Trilacuna mopanshan Tong & Li
status

sp. nov.

Trilacuna mopanshan Tong & Li sp. nov.

Figs 6 C, D View Figure 6 , 7 View Figure 7 , 8 View Figure 8 , 9 View Figure 9 , 10 Common name: 磨盘山三窝蛛 View Figure 10

Type material.

Holotype China • ♂ ( SYNU -925 ); Yunnan Prov., Yuxi City, Xinping Co., Mopanshan National Forest Park ; 23°57'36.42"N, 101°56'23.58"E, 2113 m elev.; 1.VI.2015; Z. Chen & Y. Li leg. GoogleMaps Paratypes. China • 6 ♀ ( SYNU -926 , SYNU -980 –984); same data as holotype GoogleMaps .

Other material.

China • 1 ♂ 3 ♀ ( SYNU -985 –988); Yunnan Prov., Yuxi City, Xinping Co., Xinhua Township, Guzhou Wild Forest ; 24°6'37.98"N, 101°50'59.88"E, 1987 m elev.; 2.VI.2015; Z. Chen & Y. Li leg. GoogleMaps

Etymology.

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

Diagnosis.

The new species is similar to T. xinping in the granulated carapace and the slightly elevated male epigastric region, but can be distinguished by the sternum strongly rugose (Fig. 7 D View Figure 7 ) vs. reticulate, with a cluster of short setae ( Tong et al. 2019: fig. 20 A), the base of bulb strongly swollen ventrally (Figs 8 A View Figure 8 , 9 A View Figure 9 ) vs. straight ( Tong et al. 2019: figs 19 E, 23 E), the psembolus with two leaf-like lobes (Fig. 9 D View Figure 9 ) vs. comb-shaped lobes ( Tong et al. 2019: fig. 20 B), and the scutum of female covering about 5 / 6 of abdomen length (Fig. 10 A, C, E View Figure 10 ) vs. the whole abdomen ( Tong et al. 2019: fig. 21 A, B, C).

Description.

Male. Body: yellow, legs pale yellow; habitus as in Fig. 7 A, C, E View Figure 7 ; body length 1.52; Carapace (Fig. 7 B, F View Figure 7 ): 0.75 long, 0.52 wide; sides granulate. lateral sides granulate. Eyes (Fig. 7 B, H View Figure 7 ): well developed; ALE largest, PLE smallest; posterior eye row recurved from above, procurved from front; ALE separated from edge of carapace by 1.3 diameters. Mouthparts (Figs 7 D View Figure 7 , 8 G View Figure 8 ): endites distally branched. Sternum (Fig. 7 D View Figure 7 ): surface strongly rugose. Abdomen (Fig. 7 A, C, E, G View Figure 7 ): 0.69 long, 0.54 wide; sperm pore situated at level of anterior spiracles; apodemes present, posterior spiracles not connected by groove; with small semi-circular spot situated between posterior spiracles; epigastric region slightly elevated. Palp (Figs 8 A – F View Figure 8 , 9 A – H View Figure 9 ): yellow; 0.54 long (0.17, 0.10, 0.11, 0.16); femur swollen (width / length = 0.82); tibia about as long as patella; bulb triangular, base strongly swollen ventrally, tapering apically; psembolus complex, with basal branch (bb), 2 leaf-like lobes (lll), broad median branch (mb) and lateral branch (lb), surrounded by numerous fiber structures.

Female. Same as male except as noted. Body length 1.62; habitus as in Fig. 10 A, C, E View Figure 10 . Carapace 0.68 long, 0.55 wide. Abdomen: 0.85 long, 0.62 wide; dorsal scutum covering about 5 / 6 of abdomen length. Epigastric area (Figs 10 G View Figure 10 , 6 C View Figure 6 ): with recurved, strongly sclerotized arches (sar). Endogyne (Fig. 6 D View Figure 6 ): with narrow, straight transverse sclerite (tsc); with anterior T-shaped slender 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 View Figure 1 ).

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Oonopidae

Genus

Trilacuna