Anochetus risii

Brown, WL Jr.,, 1978, Contributions toward a reclassification of the Formicidae. Part VI. Ponerinae, tribe Ponerini, subtribe Odontomachiti. Section B. Genus Anochetus and bibliography., Studia Entomologica 20, pp. 549-638 : 577-578

[5] Anochetus risii

A. risii (fig. 28) is known from several samples collected along the South China coast: Hong Kong (type locality); Repulse Bay, Hong Kong (F. Silvestri); Kusang (Silvestri); Taipo (Silvestri), and from Viet Nam; Yen Bay (Silvestri). The species is ferruginous yellow in color, with pale yellow legs; the pronotum is striate or ragulose in front and around the sides of the disc, but the center of the disc is smooth and shining. In A. risii and related species, the dorsal inner margin of the mandible is nearly straight and is edentate with a smooth margin, the preapical angle tends to be acute and is directed somewhat apicad as well as mesad, and the intercalary tooth of the apical trio is reduced and situated far out on the ventral apical tooth near its apex,. which may thus appear furcate in young specimens. In older specimens, the intercalary tooth may be worn to a nub, or broken off, and scarcely detectable. A representative worker from Kusang, China has HL 1.62, HW 1.44, ML 1.19, scape L 1.58, eye L 0.28 mm; Cl 89, MI 73. The form of a topotypic worker trunk and petiole is shown in fig. 28.

A syntype of A. gracilis , from Bogor, Java (Karawajew), appears to belong to A. risii , though it has relatively long mandibles: HL

I.48, HW 1.27, ML 1.14, scape L 1.48, eye L 0.29 mm; Cl 86, MI 77, and the apex of the petiolar node is more laterally compressed. This sample was taken in the great Botanical Gardens at Bogor, and may represent an introduction to Java with nursery stock.