Mysmena luosuo 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/05B79993-3BFA-4F2A-9D10-DC195EED80B6
taxon LSID	lsid:zoobank.org:act:05B79993-3BFA-4F2A-9D10-DC195EED80B6
treatment provided by	ZooKeys by Pensoft
scientific name	Mysmena luosuo Lin & Li
status	sp. nov.

Treatment

Mysmena luosuo Lin & Li sp. nov.

Figs 24 View Figure 24 , 25 View Figure 25 , 26 View Figure 26

Type material.

Holotype ♂ (IZCAS) and paratypes 10♂ 3♀ (IZCAS), China: Yunnan, Mengla, XTBG, secondary tropical seasonal moist forest (21.916°N, 101.283°E; 656 ± 15 m), by pitfall trapping, 1-24.X.2007, G. Zheng leg.

Other material examined.

40♂ 6♀ (NHMSU), China: Yunnan, Mengla, Menlun Nature Reserve , secondary tropical seasonal moist forest (21.911°N, 101.283°E; 633 ± 17 m), by pitfall trapping, 16-31.I.2007, G. Zheng leg. GoogleMaps

Etymology.

The specific name derives from the Luosuo River, which is a main river in the type locality; noun in apposition.

Diagnosis.

Mysmena luosuo sp. nov. seems similar to M. furca and M. rostella by the presence of modified cheliceral spines on the male (cf. Figs 22C View Figure 22 , 24C View Figure 24 , and 27C View Figure 27 ), the shape of the male palps (cf. Figs 25A, B, D, E View Figure 25 and 28A-D View Figure 28 ), and the configuration of the vulvae (cf. Figs 26B, C View Figure 26 , 23E, F View Figure 23 ). It can be distinguished from males of M. furca by lacking a serrated cymbial process (CyP), present in M. furca (Fig. 25C-E View Figure 25 vs. Fig. 23A View Figure 23 ) and by a longer coiled embolus, shorter in M. furca (Fig. 25A, B View Figure 25 vs. Fig. 23C View Figure 23 ); from M. rostella by the shorter embolus and lacking a cymbial process, but longer embolus and having cymbial process in M. rostella (Fig. 25C, D View Figure 25 vs. Fig. 28A, B View Figure 28 ). Females can be distinguished from M. furca and M. rostella by the near globular spermathecae (Fig. 26C View Figure 26 ), ovoid in M. furca (Fig. 23F View Figure 23 ) and reniform in M. rostella (Fig. 29C View Figure 29 ).

Description.

Male. Measurements: total length 0.57, Prosoma 0.21 long, 0.26 wide, 0.26 high. Abdomen 0.36 long, 0.37 wide, 0.40 high. Clypeus 0.06 high. Sternum 0.21 long, 0.20 wide. Length of legs: I 0.72 (0.21, 0.10, 0.18, 0.12, 0.11); II 0.68 (0.18, 0.10, 0.16, 0.10, 0.14); III 0.54 (0.12, 0.10, 0.12, 0.10, 0.10); IV 0.52 (0.14, 0.10, 0.12, 0.08, 0.08).

Somatic characters (Fig. 24A-D View Figure 24 ). Coloration: prosoma orange, with two brown spots ventrally, ocular base black. Abdomen yellow, with multiple light-brown spots. Legs brown-yellow. Prosoma: carapace near pentagonal in dorsal. Cephalic area sharply elevated. Ocular region projecting, eight eyes in two rows. All eyes round, each eye surrounded by black ring. Three pairs of cheliceral spines. Labium nearly rectangular. Sternum scutiform, covered with sparse setae. Legs: leg I with a mating clasper on metatarsus, covered with setae and bristles. Abdomen: nearly round in dorsum, covered with pale short setae.

Palp (Fig. 25A-E View Figure 25 ): orange, the tibia comparatively large, about half the volume of the bulb. Except for retrolateral region, a row of long setae almost encircled the distal brim of tibia (Fig. 25D, E View Figure 25 ). Cymbium nearly transparent, with a cymbial conductor, distal lobe and median keel on cymbium, the paracymbium comparatively small, with long setae (Fig. 25C-E View Figure 25 ). Bulb irregular, embedded in a translucent membranous tegulum. Spermatic ducts can be seen through tegulum. Embolus wide, coiled into “S” -shaped, tip extended to cymbial conductor (Fig. 25A-E View Figure 25 ).

Female. Measurements: total length 0.64 Prosoma 0.26 long, 0.23 wide, 0.26 high. Abdomen 0.38 long, 0.35 wide, 0.38 high. Clypeus 0.05 high. Sternum 0.22 long, 0.20 wide. Length of legs: I 0.71 (0.28, 0.10, 0.13, 0.10, 0.10); II 0.64 (0.19, 0.10, 0.15, 0.10, 0.10); III 0.51 (0.15, 0.08, 0.08, 0.10, 0.10); IV 0.65 (0.23, 0.08, 0.12, 0.12 0.10).

Somatic characters (Fig. 24E-G View Figure 24 ). Coloration: prosoma brown dorsally, yellow ventrally with two brown strips, ocular base black. Abdomen brown dorsally, yellow ventrally with multiple arc brown strips and spots. Legs brown-yellow. Prosoma: carapace nearly pear-shaped. The eight eyes in two rows, AER and PER recurved in dorsal view. ALE and PLE contiguous. Chelicerae, endites as in male, labium rectangle, and sternum scutiform, covers with short setae. Legs: covered with setae and bristles. A sclerotized subdistal-ventral femoral spot present at surface of leg I and II. Abdomen: nearly round in dorsum, covered with short brown setae.

Epigyne (Fig. 26A-C View Figure 26 ): The scape short, transparent (Fig. 26C View Figure 26 ). The spermathecae globular, situated at the middle of vulva. Fertilization ducts short, derived from dorsal of the spermathecae and coiled to anterior of spermathecae. Copulatory ducts sclerotized and wider, coiled around the spermathecae, the posterior part expanded to a globular, connected to the ventral of spermathecae. (Fig. 26B, C View Figure 26 ).

Distribution.

Southwestern China (Yunnan).

Remarks.

The diagnostic features of Mysmena luosuo sp. nov. are also largely broad Mysmeninae ( Lopardo and Hormiga 2015), but shape of the male palps and the configuration of the vulvae are similar to other species of the same genus (cf. M. furca and M. rostella ), without share features of other genera. Therefore, we propose it as a new species.