Crematogaster decamera

Heike Feldhaar, Ulrich Maschwitz & Brigitte Fiala, 2016, Taxonomic Revision of the Obligate Plant-Ants of the Genus Crematogaster Lund (Hymenoptera: Formicidae: Myrmicinae), Associated with Macaranga Thouars (Euphorbiaceae) on Borneo and the Malay Peninsula, Sociobiology 63 (1), pp. 651-681 : 661

Crematogaster decamera -group

C. decamera Forel, 1910

C. roslihashimi sp. nov.

C. hullettii sp. nov.

Diagnosis

Species of the Crematogaster decamera -group typically have relatively small workers and queens that are dark brown in colour. The compound eyes are smaller than 0.5 mm in diameter (EL) and eye length usually comprises less than one third of head length (REL <0.35). Diameter of the median ocellus of queens always smaller than the distance between the two lateral ocelli (OW <OD1). Propodeal spines of workers are absent in C. decamera and C. roslihashimi and only very short in C. hullettii . Species only colonize Macaranga hosts of the section Pachystemon .