Anochetus mixtus Radchenko, 1993

Chen, Zhilin, Yang, Zhigang & Zhou, Shanyi, 2019, Review of the ant genus Anochetus Mayr, 1861 (Hymenoptera, Formicidae) from China, with revival of the valid status of Anochetus gracilis, Journal of Hymenoptera Research 68, pp. 49-74 : 49

Anochetus mixtus Radchenko, 1993

Fig. 6

Anochetus mixtus Radchenko, 1993: 77. [Holotype and paratype worker images examined, AntWeb, CASENT0917205 & SEMUT20160608A, photos by Rijal Satria & Kate Martynova, respectively].

Anochetus yunnanensis Wang, M. 1993: 226. Synonymized by Satria, Viet & Eguchi, 2017: 4. [Holotype and paratype workers examined].

Non-type material examined.

20 workers, CHINA, Guangxi, Fangchenggang City, Mt. Shiwandashan, 21.81N, 107.95E, 450 m, 24.VI.2014, leg. Zhilin Chen, No. G140095; 10 workers and 1 male, CHINA, Hainan, Ledong Country, Jianfengling, 18.74N, 108.84E, 969 m, 09. IV.2016, leg. Zhilin Chen, No. G15049.

Workers.

TL 8.41-8.76, HL 2.11-2.14, HW 1.87-1.90, CI 89-91, SL 1.88-1.92, SI 100-101, ED 0.24-0.25, PW 1.05-1.06, MSL 2.68-2.73, PL 0.53, PH 0.83, DPW 0.40, LPI 157, DPI 75 (n=5).

In full-face view head longer than broad, posterior margin strongly concave. Mandibles linear, gradually broadened apically; inner margin with 9-10 denticles; apical portion with two distinct large teeth, sometimes with 1 small additional denticle on the midlength of the ventral tooth. Antennae 12-segmented, scapes just surpassing to posterior corners of head. Eyes moderately large, maximum diameter equal to the basal width of mandibles.

In lateral view mesosoma stout, pronotum moderately convex. Promesonotal suture narrowly nothed. Mesonotum with a high transverse ridge anteriorly. Metanotal groove deeply impressed. Dorsum of propodeum straight, sloping posteriorly; posterodorsal coner of propodeum rounded. Petiole roughly cone-shaped and weakly inclined posteriorly, with a blunt and rounded dorsal apex, anterior margin almost straight, posterior margin weak convex; subpetiolar process subtriangular, directed anteroventrally.

Frons longitudinally to obliquely striate posteriorly; frontal lobes weakly striate, remainder of head smooth and shining. Pronotum irregularly rugose. Dorsum of mesonotum with longitudinal rugae, mesopleuron smooth and shining. Metathorax and propodeum obliquely rugose. Petiole smooth and shining, basal area faintly striate. Gaster smooth and shining. Body dorsum with sparse suberect hairs and sparse decumbent pubescence; scapes with scattered suberect hairs and abundant subdecumbent pubescence, tibiae with sparse suberect hairs and sparse decumbent pubescence. Body reddish brown; antennae and legs yellowish brown.

Recognition.

A. mixtus is similar to A. rugosus (Smith, 1857), but can be distinguished from the latter by the following characters: vertex smooth and shining; upper half of petiolar node smooth and shining, basal half weakly striate.

Distribution.

Known from Vietnam and China: Yunnan, Guangxi and Hainan.

Figures

Figure 6. Anochetus mixtus worker (No. G 140095). A head in full-face view B mandible in anterior view C body in dorsal view D body in lateral view.