Allorhynchium radiatum Li, Barthelemy & Carpenter , 2019

Luo, Li, Zhang, Qiao-Hua, Chen, Bin & Li, Ting-Jing, 2020, Additions to the knowledge of the genus Allorhynchium van der Vecht, 1963 from China (Hymenoptera, Vespidae, Eumeninae), Journal of Hymenoptera Research 77, pp. 119-137 : 119

Allorhynchium radiatum Li, Barthelemy & Carpenter, 2019

Figs 29-36 , 37-46 , 47-52

Allorhynchium radiatum Li, Barthélémy & Carpenter, 2019: 139-140.

Material examined.

1♀ 1♂, China, Guizhou Prov., Qiannan City, Libo County, Maolan National Nature Reserve , Dongdai Village , 25°23.408'N, 108°04.374'E, 576 m, 21.VI.2015, Tingjing Li and Yan Peng (CQNU) ; 2♀♀ 3♂♂, China, Guangxi Prov., Guilin City, Longsheng County, Sanmen Town , Huaping National Nature Reserve , 25°37.454'N, 109°54.957'E, 740 m, 16.VII.2018, YanPeng and Xue Zhang (CQNU) ; 2♀♀, China, Guangdong Prov., Shaoguan City, Shixing County, Chebaling National Nature Reserve , 24°43.503'N, 114°15.658'E, 357 m, VI.2018, Feiyue Du (CQNU) .

Notes.

The species A. radiatum was described on a single female from Hong Kong, China ( Li et al. 2019). The type specimen is almost wholly black except yellow spots on head. According to the results of COI genes in this study (Fig. 19 ), there are some variations of morphological characters within the species. Among the specimens which are collected from other areas of China, those from Guizhou (Figs 29-36 ) and Guangxi (Figs 37-46 , Allorhynchium A) are with more yellow markings than the type specimen (figs 33, 34 of Li et al. 2019) and those from Guangzhou (Figs 47-52 , Allorhynchium B), and S2 of male protruding medially into a transverse crest or indistinctly convex (Figs 35 , 43-45 ).

First description of male

(Figs 30 , 38 ): body length 12.8-13.3 mm, forewing length 12.5-12.9 mm. Sculpture, punctuation, setae, and coloration as in female (Figs 29 , 37 , 47 ); the following parts yellow: clypeus wholly or except lateral side (Figs 33 , 41 ), scape ventrally, anterior small separated spots of pronotum, and dorsolateral spots of propodeum; A3-A12 ventrally dark brown; T1 and T2 almost black or with thin and interrupted apical bands (Figs 30 , 38 ); clypeus almost as wide as long, moderately punctate, apical margin strongly emarginated medially, apical width: emargination depth = 0.58: 0.21, total width: apical width = 1.8: 0.58; A13 (Figs 34 , 42 ) slightly curved and longer than that of A. diffinis ; S2 protruding medially into a transverse crest or indistinctly convex (Figs 35 , 43-45 ); S7 with three distinct tubercles at basal area (Figs 36 , 46 ); genitalia as in Figs 31 , 39 , apical tip of penis valve somewhat inflated and round.

Diagnosis.

Compared with the related A. diffinis , body of A. radiatum almost black or just with a few thin yellow markings, A13 elongated and longer than that of A. diffinis , punctures on both T2 and S2 distinctly coarser, S2 protruding medially into a transverse crest or indistinctly convex (in A. diffinis , S2 protruding medially into a big and strong crest in lateral view and rounded apically), apex of penis valve round in frontal view (in A. diffinis , apex of penis valve not round).

Distribution.

China (Hong Kong, Guangdong, Guangxi, Guizhou).

In addition, there was an error that needs to be corrected in the reference ( Li et al. 2019): figure 38 of A. radiatum in p.138 was misplaced and should be exchanged with figure 89 in page 152.

Figures

Figure 19. Maximum likelihood tree of eight COI sequences (The nodes are shown with their bootstrap values; Vespa mandarinia was used as the out-group)

Figures 37 - 46. Allorhynchium radiatum (Allorhynchium A, from Guangxi) 37 habitus (dorsal view), ♀ 38 habitus (dorsal view), ♂ 39 genitalia (front view), ♂ 40 clypeus, ♀ 41 clypeus, ♂ 42 apex of antenna, ♂ 43 - 45 variations of S 2, ♂ 46 S 7, ♂.

Figures 29 - 36. Allorhynchium radiatum Li et al., 2019 (from Guizhou) 29 habitus (dorsal view), ♀ 30 habitus (dorsal view), ♂ 31 genitalia (front view), ♂ 32 clypeus, ♀ 33 clypeus, ♂ 34 apex of antenna, ♂ 35 metasoma (ventral view), ♂ 36 S 7, ♂.

Figures 47 - 52. Allorhynchium radiatum (Allorhynchium B, from Guangzhou) 47 habitus (dorsal view) ♀ 48 head, (dorsal view) ♀ 49 clypeus, ♀ 50 metasoma (dorsal view), ♀ 51 mesosoma (dorsal view), ♀ 52 metasoma (ventral view), ♀.