Rotastruma stenoceps Bolton, 1991

Hosoishi, Shingo, Yamane, Seiki & Sokh, Heng, 2021, A third species of the rare ant genus Rotastruma (Hymenoptera, Formicidae) from Cambodia, with illustrated generic diagnoses and key to species, Deutsche Entomologische Zeitschrift 68 (2), pp. 225-233 : 225

Rotastruma stenoceps Bolton, 1991

Type material examined.

Holotype worker image examined. Holotype: China • worker; Guangdong, Ding-Hu, Mts. 60 km W. of Guangzhou; Jun 1983; Z. Boucek leg.; type image CASENT0901994 of AntWeb (http://www.antweb.org/); BMNH.

Non-type material examined.

China • one dealate queen; Hong Kong, Lung Fu Shan Country Park, at 22.279139°N, 114.136755°E, elevation 273 m; 21 Apr 2016; Y. Y. Luo leg.; colour image ANTWEB1009015; SBSHKU.

Remarks.

This species is similar to R. epispina sp. nov., but can be distinguished by the posterially directed propodeal spines and short petiolar peduncle.

Luo and Guénard (2016) mentioned that " In full face view, head rectangular in shape, slightly wider than long (CI 85)" in the description of a single queen. However, the CI index and their image (fig. 10B) suggest that the queen has a longer head. The R. stenoceps queen is similar to the R. epispina sp. nov. queen, but can be distinguished by the downcurved propodeal spine and short petiolar peduncle.