Chuanattus 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 Chuanattus C. Wang, Mi & Li gen. nov.

Type species.

Chuanattus deelemanae sp. nov.

Diagnosis.

Chuanattus gen. nov. resembles that of Yaginumaella Prószyński, 1979 in having a similar habitus and almost identical copulatory organs, especially the presence of a longitudinal, irregular central patch dorsally on the abdomen, a pair of epigynal hoods and similar path of copulatory ducts, but differs in: 1) the lacking of the posterior tegular lobe (Fig. 3 B ) vs present in Yaginumaella (Figs 7 B , 9 B , 11 B , 13 B , 15 C ); 2) the lacking of a longitudinal, central thoracal stripe (Fig. 4 F, H ) vs present except some males in Yaginumaella (Figs 8 C, E , 10 E, F , 12 C, D , 16 C, E ); 3) the presence of a dorsal abdominal scutum in male (Fig. 4 F ) vs absent in Yaginumaella (Figs 8 C , 10 E , 12 C , 14 E , 16 C ). The genus also somewhat resembles that of Ptocasius Simon, 1895 in the general shape of copulatory organs, but can be distinguished by the followings: 1) the embolus is curved approximately a quarter of a circle (Fig. 3 B ) vs curved at least half a circle in Ptocasius ( Żabka 1985: figs 513, 517, 521, 530; Logunov and Jäger 2015: fig. 52; Cao et al. 2016: fig. 38 C, D; Patoleta et al. 2020: fig. 7 G, H); 2) the lacking of the tegular bump (Fig. 3 B ), vs present except modified into a pale area in the type species and its congeners in Ptocasius ( Żabka 1985: figs 513, 517, 521; Cao et al. 2016: fig. 38 C, D; Patoleta et al. 2020: fig. 7 G, H); 3) the copulatory ducts are not forming median ridges (Fig. 2 C, E ) vs forming obvious prominent median ridges in Ptocasius ( Żabka 1985: fig. 526; Logunov and Jäger 2015: fig. 55; Cao et al. 2016: fig. 39 B; Patoleta et al. 2020: figs 8 G, H, 9 G, H); 4) the abdomen has a longitudinal, central irregular path dorsally (Fig. 4 F, H ) vs has an anterior, transverse, near arc-shaped stripe and a pair of medio-lateral or posterolateral, oval patches or instead by a complete transverse patch in Ptocasius ( Patoleta et al. 2020: figs 7 A, 8 A, 9 A; Logunov 2024: figs 125, 130).

Description.

See description of type species.

Composition.

Currently, it only includes the type species.

Distribution.

China ( Sichuan).

Etymology.

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

Comments.

Yaginumaella pentamaculata ( Hu, 2001) , comb. nov. shares a similar epigyne with the type species, especially the form of the atrium and the epigynal hood position, indicating it could be a potential member of this genus, but those are not obviously different from some Yaginumaella . Thus, it has been transferred to Yaginumaella temporarily because it is generally more similar to Y. circula ( Yang & Peng, 2023) , comb. nov.

Figures

Figure 2. Geographical records of the new species.

Figure 3. Male palp of Chuanattus deelemanae gen. et sp. nov., holotype (IZCAS - Ar 45820). A. Palp, prolateral; B. Ditto, ventral; C. Ditto, retrolateral. Abbreviations: E = embolus, RTA = retrolateral tibial apophysis, SD = sperm duct. Scale bars: 0.1 mm.

Figure 4. Chuanattus deelemanae gen. et sp. nov., male holotype (IZCAS - Ar 45820) (F, G, I, J), female paratype (IZCAS - Ar 45828) (A, C, H), and female paratype (IZCAS - Ar 45829) (B, D, E). A, B. Epigyne, ventral; C. Vulva, dorsal; D. Copulatory duct, ventral; E. Copulatory duct, spermatheca and fertilization duct, dorsal; F, H. Habitus, dorsal; G. Ditto, ventral; I. Carapace, frontal; J. Chelicera, posterior. Abbreviations: At = atrium, CD = copulatory duct, FD = fertilization duct, H = epigynal hood, S = spermatheca. Scale bars: 0.1 mm (A – E, J); 0.5 mm (F – I).

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).