Anochetus medogensis, Chen & Yang & Zhou, 2019

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 medogensis sp. n.

Fig. 5

Type material.

Holotype worker, CHINA, Tibet, Modog Country, Beibeng Town, Beibeng Village, 29.25N, 95.19E, 840 m, 28.VIII.2016, leg. Zhilin Chen, No. G160581; 9 paratype workers from the same colony. [Holotype worker and 5 paratype worker are deposited in the Insect Collection, Guangxi Normal University, Guilin, China (GXNU); 2 paratype workers will be deposited in the Insect Collection, Southwest Forestry University, Kunming, Yunnan Province, China (SWFU); 2 paratype workers will be deposited in the Institute of Zoology, Chinese Academy of Sciences, Beijing, China (IZCAS)].

Holotype worker.

TL7.86, HL 1.89, HW 1.65, CI 87, SL 1.68, SI 102, ED 0.23, PW 0.92, MSL 2.52, PL 0.47, PH 0.67, DPW 0.36, LPI 143, DPI 76.

In full-face view head longer than broad, posterior margin strongly concave. Mandibles linear, gradually broadened apically; inner margin with 11 denticles; apical five denticles equally sized, remaining denticles gradually decreasing in size towards base; apical portion with three distinct teeth. Clypeus with concave anterior margin, lateral portion forming two round lobes above the base of mandibles. Antennae 12-segmented; scapes long, surpassing to posterior corners of head by 1/10 of its length. Eyes moderately large; maximum diameter of eye equal to the basal width of mandibles.

In lateral view mesosoma slender; pronotum moderately convex. Promesonotal suture narrowly notched. Mesonotum with a transverse ridge anteriorly. Metanotal groove deeply depressed. Dorsum of propodeum almost straight, sloping posteriorly; posterodorsal coner of propodeum narrowly rounded. Petiole cone-shaped, with a pointed dorsal apex, anterior margin slightly longer than posterior margin; subpetiolar process developed, directed posteroventrally as a distinct hook.

Frons longitudinally to obliquely striate posteriorly; remainder of head smooth and shining. Mesosoma smooth and shining, upper portion of lateral pronotum longitudinally striate, metathorax and propodeum obliquely rugose. Petiolar node smooth and shining, basal area faintly striate. Gaster smooth and shining.

Body dorsum with abundant erect to suberect hairs and sparse decumbent pubescence; scapes with sparse suberect hairs and abundant subdecumbent pubescence, tibiae with abundant suberect hairs and sparse decumbent pubescence. Body reddish brown; head, mandibles and antennae blackish brown; legs yellowish brown.

Paratype workers.

TL7.35-7.89, HL 1.68-1.89, HW 1.44-1.65, CI 85-87, SL 1.49-1.68, SI 102-103, ED 0.19-0.23, PW 0.83-0.92, MSL 2.21-2.52, PL 0.42-0.47, PH 0.62-0.67, DPW 0.28-0.36, LPI 143-150, DPI 68-76. (n = 9). As holotype.

Recognition.

The new species is similar to A. princeps Emery, 1884, but can be distinguished from the later by the following characters: scapes surpassing to posterior corners of head by 1/10 of its length; petiole cone-shaped, with a pointed dorsal apex.

Distribution.

Known only from the type-locality Medog of China.

Figures

Figure 5. Anochetus medogensis holotype worker (No. G 160654). A head in full-face view B mandible in anterior view C body in dorsal view D body in lateral view.