Microdipoena menglunensis (Lin & Li, 2008)

Figs 7, 8, 9

Mysmenella menglunensis Lin and Li 2008: 506, fig. 13A-I (♂).

Microdipoena menglunensis Lopardo and Hormiga 2015: 783.

Type material.

Holotype ♂ (IZCAS), China: Yunnan, Mengla, XTBG (21.913°N, 101.267°E; 556 ± 11 m), by pitfall trapping, 18.VII.2007, Guo Zheng leg.; paratypes 1♂ (IZCAS), same site as for preceding, Rubber plantation (21.908°N, 101.266°E; 569 ± 11 m), 21.VII.2007; 1♂, same site as for preceding, Primary tropical seasonal rainforest (21.917°N, 101.275°E; 558 ± 17 m), 22.VII.2007, G. Zheng. Examined.

Other material examined.

3♂ 5♀ (MNHSU), China: Yunnan, Mengla, Menglun, XTBG, Rubber-Tea plantation (about 20 yr.) (22.029°N, 101.522°E; 569 ± 11 m), by pitfall trapping, 16-31.V.2007, G. Zheng leg. ; 3♂ 3♀ (MNHSU), China: Yunnan, Mengla, Menglun, XTBG, Rubber plantation (about 20 yr.) (22.038°N, 101.357°E; 586 ± 9 m), by searching, 4-11.IV.2007, G. Zheng leg.

Diagnosis.

This species is similar to Microdipoena jobi (Kraus, 1967) and Microdipoena samoensis (Marples, 1955), but can be distinguished by the detailed structures of the embolus; this species has a distal lobe on the cymbium apex and has a sclerotized cymbial fold bore a row of ordered setae (Fig. 8A, C-F vs. fig. 132D-F, Lopardo and Hormiga 2015: 675). The female distinguished by the semicircular spermathecae separated by 2.5 times their diameter, near globular in M. jobi and M. samoensis (Fig. 9C, D vs. fig. 129E, F, Lopardo and Hormiga 2015: 672)

Description.

Male. See Fig. 7A-C and Lin and Li (2008): 506.

Palp (Fig. 8A-F): orange; tibia small, cup-shaped, except for retrolateral region, a row of long setae almost encircling the distal brim (Fig. 8E, F). Cymbium nearly transparent, with a large cymbial tooth at the ventral median, a distal lobe and a cymbium process on the cymbium apex; the cymbial fold slightly sclerotized, bore a row of ordered setae (Fig. 8A, C-F). Paracymbium wider, tongue-shaped, with long setae (Fig. 8E). The bulb is embedded in a translucent membranous tegulum. Embolus very long, coiled into two crossed loops; the apical structure of the embolus considerably complicated (Fig. 8C-F).

New morphological data.

Female. Measurements: total length 0.81. Prosoma 0.24 long, 0.20 wide, 0.20 high. Abdomen 0.57 long, 0.57 wide, 0.62 high. Clypeus 0.06 high. Sternum 0.18 long, 0.16 wide. Length of legs: I 0.92 (0.30, 0.12, 0.28, 0.12, 0.10); II 0.90 (0.28, 0.12, 0.26, 0.14, 0.10); III 0.70 (0.26, 0.08, 0.16, 0.10, 0.10); IV 0.94 (0.32, 0.12, 0.28, 0.12, 0.10).

Somatic characters (Fig. 7D-F). Coloration: same as in male. Prosoma: carapace long, nearly pear-shape. Cephalic part lower than in male. Ocular pattern as in male. Chelicerae, endites, labium and sternum as in male. Legs: covered with setae and bristles, a sclerotized subdistal-ventral femoral spot present on surface of legs I and II. Abdomen: same as in male.

Epigyne (Fig. 9A-D): the structure can be seen through the cuticle (Fig. 9A-D). Scape long, curved, with narrow folds (Fig. 9B-D). Spermathecae large, semicircular, separated by 2.5 times their diameter (Fig. 9C, D). Fertilization ducts short, bending anteriorly, arising from lower edge of spermathecae (Fig. 9C, D). Copulatory ducts membranous, slightly sclerotized, coiled posterior of spermathecae, connected above the spermathecae (Fig. 9C, D).

Distribution.

Southwestern China (Yunnan).

Remarks.

The female of M. menglunensis is described for the first time.