Ramosatidia Yu & Li, 2021

Zhang, Jianshuang, Yu, Hao & Li, Shuqiang, 2021, On the clubionid spiders (Araneae, Clubionidae) from Xishuangbanna, China, with descriptions of two new genera and seven new species, ZooKeys 1062, pp. 73-122 : 73

Ramosatidia Yu & Li gen. nov.

Type species.

Ramosatidia situ Yu & Li, sp. nov.

Etymology.

The generic name is a combination of the Latin adjective ramosus, which means ramose, or branching, referring to the apophyses of the palpal tibia, in conjunction with atidia, alluding to the green colour and slender body, similar to Matidia . The gender is feminine.

Diagnosis.

Ramosatidia gen. nov. resembles the other genera exclusively distributed in SE Asia ( Pristidia , Nusatidia , and Matidia ) by the similar habitus (green, elongate, long-legged), but it is consistently separable by somatic characters and the copulatory organs. This new genus is characterised by the promargin with only one tooth in the male and the retromargin without tooth in the female and by the bottle-green body in in ethanol (vs. living spiders are pale green, but specimens are pale yellow, white or brownish in ethanol in almost all other genera). Ramosatidia gen. nov. can be distinguished from Pristidia by the relatively small eyes, with the PME> their diameter apart (Fig. 20E, G ) (vs. PME barely> their diameter apart), from Nusatidia by the sternum lacking a rectangular extension beyond coxae I (cf. Fig. 20H and 10B ), and from Matidia by the higher ocular region/carapace width ratio (approximately 2/3 vs. 1/2 in Matidia ) (cf. Figs 20E, G and 4E, G ), and femur I shorter than femur II (vs femur I longest). Ramosatidia gen. nov. species also can be recognised by the following characters of the copulatory organs: male palpal tibia with four apophyses (vs. maximum of three apophyses) (Fig. 19A-E ); epigynal plate lacking atrium, depression, and septum (vs. with atrium or depression in Matidia , with septum in Malamatidia ), fertilisation ducts relatively large, ~ 1/2 of spermathecae length (Fig. 20A-D ) (vs. shorter than 1/2 of spermathecae length). All the provided characters of Pristidia , Nusatidia , and Matidia are according to Deeleman-Reinhold (2001) and recent clubionid papers, such as Yu et al. (2012, 2017).

Description.

Same as for the type species.

Composition.

Type species only.

Distribution.

China (Yunnan).

Figures

Figure 4. Matidia spatulata, epigyne (A-D), male habitus (E, F) and female habitus (G, H) A intact, ventral view B cleared, ventral view C cleared, dorsal view D cleared, dorsal view; path of copulatory duct marked E dorsal view F lateral view G dorsal view H ventral view. Arrow (F) point at dark ventral abdominal spot in male. Abbreviations: BS = bursa; CD = copulatory duct (dashed line showing schematic course of copulatory duct, dorsal); CO = copulatory opening; FD = fertilization duct; SP = spermatheca. Scale bars: 0.10 mm (equal for A-D); 2 mm (equal for E, F, equal for G, H).

Figure 10. Male habitus of Nusatidia camouflata A dorsal view B ventral view C lateral view. Dotted box (B) showing rectangular projection in front of coxae I. Scale bars: 1 mm (equal for A-C).

Figure 19. Male palp of the holotype of Ramosatidia situ sp. nov. A prolateral view B retrolateral view C bulb, prolateral view D bulb, ventral view E bulb, retrolateral view. Abbreviations: C = conductor; DTA = dorsal tibial apophysis; E = embolus; LTA = lateral tibial apophysis; PTA = prolateral tibial apophysis; RTA = retrolateral tibial apophysis. Scale bars: 0.10 mm (equal for A, B, equal for C-E).

Figure 20. Ramosatidia situ sp. nov., female paratype and male holotype, epigyne (A-D), male habitus (E, F) and female habitus (G, H) A intact, ventral view B cleared, ventral view C cleared, dorsal view D cleared, dorsal view E dorsal view F lateral view G dorsal view H ventral view. Abbreviations: BS = bursa; CD = copulatory duct; CO = copulatory opening; FD = fertilization duct; SP = spermatheca. Scale bars: 0.10 mm (equal for A-D); 1 mm (equal for E, F, equal for G, H).