Dianattus C. Wang, Mi & Li, 2025

Wang, Cheng, Wang, Ying, Mi, Xiaoqi & Li, Shuqiang, 2025, Description of two new genera and seven new species of Plexippina Simon, 1901 (Araneae, Salticidae, Plexippini) from Southwest China, with a review of Yaginumaella Prószyński, 1979, ZooKeys 1257, pp. 215-247 : 215-247

Genus Dianattus C. Wang, Mi & Li gen. nov.

Type species.

Dianattus proszynskii sp. nov.

Diagnosis.

Dianattus gen. nov. resembles that of Yaginumaella Prószyński, 1979 in having a very similar habitus and epigynal structure, but differs in: 1) the tegulum has a process near the embolic base and lacking a posterior lobe (Fig. 5 B ) vs lacking similar process and having a posterior lobe in Yaginumaella (Figs 7 B , 9 B , 11 B , 13 B , 15 C ); 2) the presence of clusters of ventral dense setae on metatarsi I, femora I, II, patellae I, II, and tibiae I, II (Fig. 6 G ) vs absent in Yaginumaella ( Żabka 1981: fig. 3; Wang et al. 2023 a: 23 A; Wang et al. 2024 b: fig. 46 C); 3) the copulatory ducts are forming arc-shaped portions on the bilateral sides of copulatory openings (Fig. 6 B ) vs posteriorly extending from the origin in Yaginumaella (Figs 8 B , 10 C, D , 12 B , 14 B, D , 16 B ).

Description.

See description of type species.

Composition.

The genus is monotypic presently.

Distribution.

China ( Yunnan).

Etymology.

The generic name is a combination of dian, the pinyin of a short Chinese name of Yunnan Province, the type locality of the type species, and attus, meaning jumper. The gender is masculine.

Comments.

Yaginumaella pilosa Żabka, 1981 comb. rest. shares a very similar palpal structure with the type species, which indicates it could be a potential member of the genus. However, its generic position cannot be confirmed entirely due to the lack of other essential characteristics, such as habitus. Based on that, it has not been transferred into the genus, but further taxonomic attention is necessary.

Figures

Figure 5. Male palp of Dianattus proszynskii gen. et sp. nov., holotype (TRU - JS 0831). A. Palp, prolateral; B. Ditto, ventral; C. Ditto, retrolateral. Abbreviations: E = embolus, RTA = retrolateral tibial apophysis, SD = sperm duct, TP = tegular process. Scale bars: 0.1 mm.

Figure 6. Dianattus proszynskii gen. et sp. nov., male holotype (TRU - JS 0831) (C, D, F, G) and female paratype (TRU - JS 0834) (A, B, E). A. Epigyne, ventral; B. Vulva, dorsal; C, E. Habitus, dorsal; D. Ditto, ventral; F. Carapace, frontal; G. Leg I, II, retrolateral. Abbreviations: At = atrium, CD = copulatory duct, CO = copulatory opening, FD = fertilization duct, H = epigynal hood, S = spermatheca. Scale bars: 0.1 mm (A, B); 0.5 mm (C – G).

Figure 7. Male palp of Yaginumaella daolangi sp. nov., holotype (TRU - JS 0839). A. Palp, prolateral; B. Ditto, ventral; C. Ditto, retrolateral. Abbreviations: E = embolus, RTA = retrolateral tibial apophysis, PL = posterior tegular lobe, SD = sperm duct. Scale bars: 0.1 mm.

Figure 8. Yaginumaella daolangi sp. nov., male holotype (TRU - JS 0839) (C, D, F, G) and female paratype (TRU - JS 0840) (A, B, E). A. Epigyne, ventral; B. Vulva, dorsal; C, E. Habitus, dorsal; D. Ditto, ventral; F. Carapace, frontal; G. Chelicera, posterior. Abbreviations: At = atrium, CD = copulatory duct, CO = copulatory opening, FD = fertilization duct, H = epigynal hood, S = spermatheca. Scale bars: 0.1 mm (A, B, G); 0.5 mm (C – F).

Figure 9. Male palp of Yaginumaella medog sp. nov., holotype (TRU - JS 0841). A. Palp, prolateral; B. Ditto, ventral; C. Ditto, retrolateral. Abbreviations: E = embolus, RTA = retrolateral tibial apophysis, PL = posterior tegular lobe, SD = sperm duct. Scale bars: 0.1 mm.

Figure 10. Yaginumaella medog sp. nov., male holotype (TRU - JS 0841) (E, G – I), female paratype (TRU - JS 0844) (A, C, F) and female paratype (TRU - JS 0845) (B, D). A, B. Epigyne, ventral; C, D. Vulva, dorsal; E, F. Habitus, dorsal; G. Ditto, ventral; H. Carapace, frontal; I. Chelicera, posterior. Abbreviations: At = atrium, CD = copulatory duct, CO = copulatory opening, FD = fertilization duct, H = epigynal hood, S = spermatheca. Scale bars: 0.1 mm (A – D); 0.2 mm (I); 0.5 mm (E – H).

Figure 11. Male palp of Yaginumaella qianlei sp. nov., holotype (TRU - JS 0846). A. Palp, prolateral; B. Ditto, ventral; C. Ditto, retrolateral. Abbreviations: E = embolus, RTA = retrolateral tibial apophysis, PL = posterior tegular lobe, SD = sperm duct. Scale bars: 0.1 mm.

Figure 12. Yaginumaella qianlei sp. nov., male holotype (TRU - JS 0846) (C, E – G) and female paratype (TRU - JS 0848) (A, B, D). A. Epigyne, ventral; B. Vulva, dorsal; C, D. Habitus, dorsal; E. Ditto, ventral; F. Carapace, frontal G. Chelicera, posterior. Abbreviations: CD = copulatory duct, CO = copulatory opening, FD = fertilization duct, H = epigynal hood, S = spermatheca. Scale bars: 0.1 mm (A, B, G); 0.5 mm (C – F).

Figure 13. Male palp of Yaginumaella spinapophysis sp. nov., holotype (IZCAS - Ar 45885). A. Palp, prolateral; B. Ditto, ventral; C. Ditto, retrolateral. Abbreviations: E = embolus, ED = embolic division, RTA = retrolateral tibial apophysis, PL = posterior tegular lobe, SD = sperm duct. Scale bars: 0.1 mm.

Figure 14. Yaginumaella spinapophysis sp. nov., male holotype (IZCAS - Ar 45885) (E, F, H, I), female paratype (IZCAS - Ar 45886) (A, B, G) and female paratype (IZCAS - Ar 45887) (C, D). A, C. Epigyne, ventral; B, D. Vulva, dorsal; E, G. Habitus, dorsal; F. Ditto, ventral; H. Carapace, frontal; I. Chelicera, posterior. Abbreviations: At = atrium, CD = copulatory duct, FD = fertilization duct, H = epigynal hood, S = spermatheca, SS / AG = secondary spermatheca / accessory gland. Scale bars: 0.1 mm (A – D, I); 0.5 mm (H); 1.0 mm (E – G).

Figure 15. Male palp of Yaginumaella xiaoqingi sp. nov., holotype (IZCAS - Ar 45889). A. Prolateral; B. Retrolateral; C. Ventral; D. Dorsal. Abbreviations: E = embolus, RTA = retrolateral tibial apophysis, PL = posterior tegular lobe, SD = sperm duct. Scale bars: 0.1 mm.

Figure 16. Yaginumaella xiaoqingi sp. nov., male holotype (IZCAS - Ar 45889) (C, D, F, G) and female paratype (IZCAS - Ar 45890) (A, B, E). A. Epigyne, ventral; B. Vulva, dorsal; C, E. Habitus, dorsal; D. Ditto, ventral; F. Carapace, frontal; G. Chelicera, posterior. Abbreviations: At = atrium, CD = copulatory duct, CO = copulatory opening, FD = fertilization duct, H = epigynal hood, S = spermatheca. Scale bars: 0.1 mm (A, B, G); 0.5 mm (C – F).