Chuanattus deelemanae 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

Chuanattus deelemanae C. Wang, Mi & Li sp. nov.

Figs 3 , 4

Type material.

Holotype • ♂ ( IZCAS -Ar 45820 ), China: Sichuan: Jiangyou County, Yongsheng Township, Xinbei Village ( 31°56.25'N, 104°48.72'E, ca 680 m), 16. vi. 2024, X. Q. Zhang, Y. Wang and Q. Z. Meng leg. Paratypes • 7 ♂ 15 ♀ ( IZCAS -Ar 45821 –45842), same data as for holotype ; • 6 ♂ 2 ♀ ( IZCAS -Ar 45843 –45850), Jiangyou County, Erlangmiao Township, Beishang Village ( 32°1.77'N, 105°5.80'E, ca 640 m), 13. v. 2024, same collectors as for holotype ; • 17 ♂ 14 ♀ ( IZCAS -Ar 45851 –45881), Zitong County, Hekou Township, junction of Hejiawan, Daozuomiao, and Dasheng Villages ( 31°54.65'N, 105°9.37'E, ca 750 m) 13. vi. 2024, same collectors as for holotype ; • 1 ♂ 1 ♀ ( IZCAS -Ar 45882 –45883), Tongjiang County, Xinglong Township, Sanjiao Village ( 32°4.52'N, 107°13.44'E, ca 910 m), 16. vi. 2024, same collectors as for holotype .

Diagnosis.

The male of Chuanattus deelemanae sp. nov. resembles that of Yaginumaella striatipes (Grube, 1861) in having a similar palp, especially the origination and shape of the embolus, but can be easily distinguished by the lack of the posterior lobe, and by the flat tegulum (Fig. 3 B, C ) vs the presence of a posterior lobe and the tegulum is swollen medio-posteriorly in Y. striatipes ( Prószyński 1971: figs 28, 29). The female of this new species resembles that of Y. pentamaculata ( Hu, 2001) , comb. nov. in having a similar atrium, centrally located epigynal hoods close to each other, but can be easily distinguished by the maximum distance between epigynal hoods, which is> 3 / 4 the epigynal width (Fig. 4 A, B ) vs just ~ 1 / 5 in Y. pentamaculata ( Hu 2001: fig. 8-250 - 2).

Description.

Male (Figs 3 A – C , 4 F, G, I, J ). Total length 5.03. Cephalothorax 2.53 long, 1.88 wide. Abdomen 2.62 long, 1.70 wide. Eye sizes and inter distances: AME 0.56, ALE 0.31, PLE 0.28, AERW 1.70, PERW 1.67, EFL 1.05. Legs: I 5.13 (1.45, 0.90, 1.30, 0.90, 0.58), II 4.41 (1.38, 0.80, 1.00, 0.73, 0.50), III 4.91 (1.53, 0.75, 1.08, 1.00, 0.55), IV 5.14 (1.55, 0.73, 1.13, 1.18, 0.55). Carapace dark red to dark, covered with dense dark and golden setae of various lengths; fovea dark, linear. Chelicerae dark red, with typical dentition (two promarginal and one retromarginal teeth). Endites broadened distally, with pale inner-distal portions. Labium dark. Sternum dark, spotted, with truncated anterior edge. Legs spiny, covered with dense setae ventrally on patellae and tibiae I. Dorsum of abdomen mainly dark brown, with central, big scutum and irregular, longitudinal, medio-posterior pale patch; venter mainly dark, with pair of central, dotted lines.

Palp (Fig. 3 A – C ): tibia almost as long as wide in retrolateral view, with strongly sclerotized, straight retrolateral apophysis slightly shorter than tibial length, and tapered to rather blunt tip; cymbium ~ 1.5 × longer than wide, with truncated anterior edge; tegulum flat, almost round; embolus originates from ca 9 o′clock position, curved clockwise 1 / 4 circle and with blunt tip.

Female (Fig. 4 A – E, H ). Total length 6.20. Cephalothorax 2.71 long, 2.16 wide. Abdomen 3.53 long, 2.67 wide. Eye sizes and inter distances: AME 0.59, ALE 0.33, PLE 0.31, AERW 1.84, PERW 1.84, EFL 1.18. Legs: I 4.88 (1.50, 0.95, 1.13, 0.75, 0.55), II 4.58 (1.40, 0.90, 1.03, 0.70, 0.55), III 5.46 (1.75, 0.95, 1.08, 1.05, 0.63), IV 5.79 (1.78, 0.88, 1.25, 1.25, 0.63). Habitus (Fig. 4 H ) similar to that of male except paler, carapace covered with dense pale setae and abdomen lacking dorsal scutum.

Epigyne (Fig. 4 A – E ): slightly wider than long, with pair of central epigynal hoods close to or touching each other; atrium anteriorly located, double oval; copulatory openings beneath lateral sides of atrium, with complicated coils; spermathecae elongated, anterior-oblique extending; fertilization ducts appear from anterior edges of spermathecae.

Distribution.

Known only from the type locality in Sichuan, China (Fig. 2 ).

Etymology.

The specific name is a patronym in honor of the late Dr Christa L. Deeleman-Reinhold, who contributed to the taxonomic study of spiders in Southeast Asia; noun (name) in genitive case.

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).