Yunohamella Yoshida, 2007

Zhong, Rui, Zhong, Yang, Zhang, He, Liu, Jie, Liu, Changyong, Chen, Kuai & Hu, Changhao, 2025, Taxonomic notes on the genus Yunohamella Yoshida, 2007 (Araneae, Theridiidae) from China, with two new species, ZooKeys 1224, pp. 69-85 : 69-85

Genus Yunohamella Yoshida, 2007

Type species.

Theridion yunohamense Bösenberg & Strand, 1906 (= Yunohamella yunohamensis ) from Japan.

Diagnosis.

Species of Yunohamella are similar to those of Takayus (compare Figs 2 A – D , 4 A – D , 5 C – E , 6 C, D , 7 D – F , 8 A, B , 9 D – F ; Gao and Li 2014: figs 107–109; Marusik and Logunov 2017: figs 37–39; Lee and Kim 2021: figs 3 E – G, 4 A, B with Zhu 1998: figs 80 B – E, 83 B – E, 93 B – E, 94 B – E, 108 B – E, 114 B – F, 115 B – E, 116 B – E, 117 B – E, 118 B – E, 119 B – E, 120 B – D, 125 B, C) in having a large tegulum and a small median apophysis, a conductor conjugating with tegulum. However, Yunohamella can be distinguished from Takayus by the following: embolus thin; tegular apophysis distinct; and epigyne without a pointed scapus or with a blunt scapus (vs embolus broad, tegular apophysis invisible before expanded, epigyne with a pointed scapus in Takayus ).

Species of Yunohamella can be distinguished from Theridion (compare Figs 2 A – D , 4 A – D , 5 C – E , 6 C, D , 7 D – F , 8 A, B , 9 D – F ; Gao and Li 2014: figs 107–109; Marusik and Logunov 2017: figs 37–39; Lee and Kim 2021: figs 3 E – G, 4 A, B with Zhu 1998: figs 73 B – E, 76 B – E, 85 B – E, 88 B – E, 89 B – D, 90 B – E, 91 B, C, 97 B – E, 98 B – E, 106 B – E, 109 B – E, 110 B – D 123 B – E, 124 B – E) by the following: embolus short and straight; tegulum large; conductor conjugating with tegulum; epigyne without depression (vs embolus long and circular; tegulum not large; conductor separated; epigyne with a distinct depression in Takayus ) ( Yoshida 2007).

Species of Yunohamella can be distinguished from Cryptachaea (compare Figs 2 D , 4 D , 8 A, B ; Levi 1957: fig. 323 with Levi 1955: fig. 82) in having a median apophysis separated from the embolus and the present tegular apophysis (vs median apophysis attached to the embolus and tegular apophysis absent in Cryptachaea ).

Distribution.

Asia, Europe, North America.

Figures

Figure 2. Yunohamella gutenbergi R. Zhong, J. Liu & Hu, sp. nov., left male palp. A prolateral view B ventral view C retrolateral view D expanded, ventral view. Scale bars: 0.2 mm. (Photos by Changhao Hu.)

Figure 4. Yunohamella mohorovicici R. Zhong, J. Liu & Hu, sp. nov., left male palp. A prolateral view B ventral view C retrolateral view D expanded, ventral view. Scale bars: 0.2 mm. (Photos by Changhao Hu.)

Figure 5. Yunohamella jiugongensis (Liu & Zhong, 2023) comb. nov., male. A habitus, dorsal view B habitus, ventral view C left palp, prolateral view D left palp, ventral view (arrow points to the sharp tooth-like apophysis on tegulum) E left palp, retrolateral view. Scale bars: 0.5 mm (A, B); 0.1 mm (C – E). (Photos by Yang Zhong.)

Figure 6. Yunohamella jiugongensis (Liu & Zhong, 2023) comb. nov., female. A habitus, dorsal view B habitus, ventral view C epigyne, ventral view D vulva, dorsal view. Scale bars: 0.5 mm (A, B); 0.1 mm (C, D). (Photos by Yang Zhong.)

Figure 7. Yunohamella lyrica (Walckenaer, 1841), male. A habitus, dorsal view B habitus, ventral view C habitus, lateral view D left palp, prolateral view E left palp, ventral view F left palp, retrolateral view. Scale bars: 0.5 mm (A – C); 0.2 mm (D – F). (Photos by Changhao Hu and Rui Zhong.)

Figure 8. Yunohamella lyrica (Walckenaer, 1841), expanded left male palp. A prolateral view B ventral view. Scale bars: 0.2 mm. (Photos by Changhao Hu.)

Figure 9. Yunohamella lyrica (Walckenaer, 1841), female. A habitus, dorsal view B habitus, ventral view C habitus, lateral view D uncleared epigyne, ventral view E uncleared epigyne, ventral view F vulva, dorsal view. Scale bars: 0.5 mm (A – C); 0.1 mm (D – F). (Photos by Changhao Hu.)