Logunattus, Wang & Li, 2023

Wang, Cheng & Li, Shuqiang, 2023, Notes on twelve species of jumping spiders from Hainan Island, China (Araneae, Salticidae), ZooKeys 1167, pp. 159-197 : 159

Genus Logunattus gen. nov.

Type species.

Logunattus libaii sp. nov. from Hainan, China designated herein.

Etymology.

The specific name is a combination of logun, referring to Dr. Dmitri V. Logunov (Manchester, UK), a leading arachnologist in jumping spiders, and attus, meaning jumper. The gender is masculine.

Diagnosis.

Logunattus gen. nov. can be recognized as a member of the tribe Euophryini Simon, 1901 by the similarity of habitus and palpal structure to the representative genus of this tribe, Euochin Prószyński, 2018, especially the presence of white setae on the dorsum of palpal tibia and cymbium and the loop of sperm duct inside the tegulum ( Maddison 2015). It can be easily recognized by the dagger-axe-shaped RTA. It resembles that of Euochin Prószyński, 2018 in having similar habitus, the presence of white setae on the dorsum of tibia and cymbium of male palp, and large spermathecae, but it can be distinguished by the following: (1) the embolus is straight or curved, vs. coiled in Euochin ( Zha et al. 2014: figs 5, 8, 16, 19; Metzner 2023); (2) the RTA is dagger-axe-shaped in retrolateral view, vs. straight in Euochin ( Zha et al. 2014: figs 6, 9, 17, 20; Metzner 2023); (3) the chelicera has a single retrolateral tooth, vs. a retromarginal fissidental tooth with several cusps in the generotype and its congeners of Euochin (see the description in Zha et al. 2014); (4) the epigyne has pair of non-transparent atria lack ridges, vs. transparent atria have concomitant lateral ridges in Euochin ( Zha et al. 2014: figs 3, 10, 14, 21; Metzner 2023). The genus also somewhat resembles that of Spiralembolus gen. nov. in having similar habitus and copulatory organs, but it can be easily distinguished by the absence of white setae on clypeus, the dagger-axe-shaped RTA, non-spiralled embolus, the presence of median septum, and accessory glands of copulatory ducts, vs. presence of a cluster of white setae on clypeus, RTA non-dagger-axe-shaped, spiralled embolus, the absence of median septum and accessory glands of copulatory ducts in Spiralembolus (Figs 19 , 20A-C, G , 21 , 22A-C, G ).

Description.

Small-sized jumping spider. Sexual dimorphism indistinct. Carapace sub-square, covered with dense white and yellow setae, with elevated cephalic region and sloped thorax; fovea longitudinal, dark, linear. Chelicerae yellow-brown, each with two promarginal teeth and one retromarginal tooth. Endites paler than chelicerae, broadened mediodistally. Labium almost linguiform, paler anteriorly. Sternum longer than wide, almost heart-shaped, with straight anterior margin. Legs yellow to dark brown, covered with sparse spines. Abdomen sub-oval, the dorsum yellow to grey-brown, with small anteromedian scutum that only presented in males; venter paler than dorsum, with pair of longitudinal, central dotted lines.

Palp. Tibia short, with ventro-prolateral bump, dagger-axe-shaped RTA, and dense, white setae dorsally; cymbium longer than wide, with dense white setae dorsally on proximal half; bulb elongate-oval, with distinct posterior lobe; embolus originates from antero-prolateral portion of bulb, forming disc at base, and curved or straight medially, with spinous base apophysis or not.

Epigyne. See the description of the generotype.

Composition.

The genus includes two species, the generotype, and G. dufui sp. nov.

Distribution.

Known only from Hainan Island, China.

Figures

Figure 19. Male palp of Spiralembolus yinggeling sp. nov., holotype A prolateral B ventral C retrolateral. Scale bars: 0.1 mm.

Figure 20. Spiralembolus yinggeling sp. nov., male holotype and female paratype A epigyne, ventral B vulva, dorsal C vulva, anterodorsal D holotype habitus, dorsal E ditto, ventral F female paratype habitus, dorsal G holotype carapace, frontal H holotype chelicera, posterior. Scale bars: 0.1 mm (A-C, H); 0.5 mm (D-G).

Figure 21. Male palp of Spiralembolus yui sp. nov., holotype A prolateral B ventral C retrolateral. Scale bars: 0.1 mm.

Figure 22. Spiralembolus yui sp. nov., male holotype and female paratype A epigyne, ventral B vulva, dorsal C vulva, anterodorsal D holotype habitus, dorsal E ditto, ventral F female paratype habitus, dorsal G holotype carapace, frontal H holotype chelicera, posterior. Scale bars: 0.1 mm (A-C, H); 0.5 mm (D-G).