Mengmena banna Lin & Li, 2022

Zhang, Qiuqiu, Li, Shuqiang & Lin, Yucheng, 2022, Taxonomic study on Mysmenidae spiders (Mysmenidae, Araneae) from Xishuangbanna of Yunnan, China, ZooKeys 1124, pp. 59-108 : 59

publication ID	https://dx.doi.org/10.3897/zookeys.1124.85952
publication LSID	lsid:zoobank.org:pub:09D04DEB-58C2-4007-AA86-56ACABDE7BE3
persistent identifier	https://treatment.plazi.org/id/66FB56DD-4BF3-487E-8412-9F95DF392C58
taxon LSID	lsid:zoobank.org:act:66FB56DD-4BF3-487E-8412-9F95DF392C58
treatment provided by	ZooKeys by Pensoft
scientific name	Mengmena banna Lin & Li
status	sp. nov.

Treatment

Mengmena banna Lin & Li sp. nov.

Figs 3 View Figure 3 , 4 View Figure 4 , 5 View Figure 5

Type material.

Holotype ♂ (IZCAS) and paratypes 3♂ 4♀ (IZCAS), China: Yunnan: Mengla County, Menglun Town, Xishuangbanna National Nature Reserve, the primary tropical seasonal rain forest (21.957°N, 101.217°E; 744 ± 15 m), 16-31.I.2007, by pitfall trapping, G. Zheng leg.; 6♂ 25♀ (NHMSU), China: Yunnan: Mengla County, Menglun Town, XTBG, in the plantation of Paramichelia baillonii (about 20 yr.) (21.903°N, 101.282°E; 608 ± 11 m), 5-12.IX.2006, by searching, G. Zheng leg.

Other material examined:

11♂ 33♀ (IZCAS), China: Yunnan, Mengla County, Menglun Town, Xishuangbanna National Nature Reserve , the plantation of Paramichelia baillonii (21.956°N, 101.523°E; 608 ± 11 m), 5-12.XI.2006, by search collecting, G. Zheng leg. GoogleMaps

Etymology.

The specific name derives from the type locality; noun in apposition.

Diagnosis.

Mengmena banna sp. nov. can be distinguished from its congener M. yulin sp. nov. by both sides of the copulatory duct being fused at the midline position and forming a V-shaped structure, and the copulatory opening situated below the bottom of the V-shaped structure (Fig. 3H, I View Figure 3 vs. Fig. 6E, F View Figure 6 ).

Description.

Male. Measurements: total length 0.58. Prosoma 0.30 long, 0.28 wide, 0.29 high. Abdomen 0.34 long, 0.31 wide, 0.38 high. Clypeus 0.07 high. Sternum 0.20 long, 0.19 wide. Length of legs: I 0.91 (0.31, 0.12, 0.21, 0.11, 0.16); II 0.80 (0.25, 0.11, 0.18, 0.10, 0.16); III 0.62 (0.18, 0.09, 0.11, 0.11, 0.13); IV 0.72 (0.22, 0.10, 0.15, 0.12, 0.13).

Somatic characters (Fig. 3A-C View Figure 3 ). Coloration: prosoma light-yellow centrally, deep yellow marginally. Ocular base black. Chelicera yellow, endites and labium yellow, the sternum light-yellow. Abdomen silver grey dorsally, yellow with a “U” -shaped white and a “U” -shaped brown stripe ventrally. Legs yellow. Prosoma: carapace near round. Cephalic part slightly elevated. Ocular area at apex. AME absent, six eyes in two rows. ALE and PLE contiguous. PER slightly recurved. Sternum scutiform, plump, covered with sparse setae. Legs: covered with setae and bristles. The leg I with a mating clasper on distal 1/3 position of metatarsus and a subdistal sclerotized femoral spot present at surface of ventral femur. Abdomen: near round in dorsum.

Palp (Figs 4 View Figure 4 - 5 View Figure 5 ): weakly sclerotized. The tibia cup-shaped, covered with long setae along distal brim (Fig. 4A, B View Figure 4 ). Cymbium membranous, with a distal lobe on cymbium (Figs 4A, B View Figure 4 , 5A-C View Figure 5 ). Cymbial conductor triangular, distal end hook-shaped (Figs 4A-D View Figure 4 , 5A-C View Figure 5 ). Cymbial process straight but the tip recurved, situated on dorsal cymbial conductor (Figs 4D View Figure 4 , 5A-C View Figure 5 ). Cymbial fold sclerotized, derived from the base of cymbial process, and bears a row of ordered setae (Fig. 5A, C View Figure 5 ). The absence of paracymbium (Fig. 5C View Figure 5 ). Tegulum smooth, translucent; spermatic duct visible from the tegulum (Figs 4B, D View Figure 4 , 5D View Figure 5 ). Embolus threadlike, coiled into two crossed loops (Figs 4A-D View Figure 4 , 5D, E View Figure 5 ).

Female. Measurements: total length 0.64. Prosoma 0.29 long, 0.27 wide, 0.27 high. Abdomen 0.42 long, 0.40 wide, 0.46 high. Clypeus 0.06 high. Sternum 0.20 long, 0.19 wide. Length of legs: I 0.87 (0.27, 0.12, 0.18, 0.14, 0.16); II 0.75 (0.22, 0.11, 0.15, 0.12, 0.15); III 0.61 (0.17, 0.09, 0.11, 0.11, 0.13); IV 0.72 (0.21, 0.10, 0.14, 0.13, 0.14).

Somatic characters (Fig. 3D-F View Figure 3 ). Coloration: prosoma light-brown centrally, deep brown marginally. Ocular base black. Chelicera, endites, labium and sternum light-brown. Abdomen silver grey, with a “U” -shaped white stripe. Legs brown. Prosoma: carapace pear-shaped. Ocular pattern as in male. AME absent, six eyes in two rows, the PER slightly recurved, the ALE and PLE contiguous. Sternum scutiform, plump, covered with sparse setae. Legs: covered with setae and bristles, a sclerotized femoral spot present at apical ventral surface of leg I and II. Abdomen: same as in male.

Epigyne (Fig. 3G-I View Figure 3 ): weakly sclerotized, covered with sparse short setae along ventral brim (Fig. 3G, H View Figure 3 ). Internal structures indistinctly visible from translucent cuticle (Fig. 3G View Figure 3 ). Spermathecae small, ovate, widely separated by at least four times their width (Fig. 3H, I View Figure 3 ). Fertilization ducts short, winding, arising from ventral of the spermathecae (Fig. 3H, I View Figure 3 ). Copulatory ducts wide, both sides of copulatory duct fused at the midline position and formed a V-shaped structure; the copulatory opening situated below the bottom of the V-shaped structure (Fig. 3H, I View Figure 3 ).