Crematogaster (Decacrema) captiosa

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 : 665

Crematogaster (Decacrema) captiosa -group

C. borneensis André, 1896

C. linsenmairi sp. nov.

C. captiosa Forel, 1911

C. claudiae sp. nov.

Diagnosis

Species of the Crematogaster (Decacrema) captiosa - subgroup have relatively large queens with large compound eyes with EL> 0.5 mm (except for C. claudiae (EL 0.45 – 0.5 mm) whose queens are generally smaller than the queens of the other species within this group). Queens are medium to light brown in colour. Workers of C. borneensis , C. linsenmairi and C. captiosa possess long and acute propodeal spines.

Crematogaster claudiae has an intermediate morphology of species belonging to the captiosa and the decamera -group. Queens are intermediate in size (HW, HL, WL and EL) and workers possess none or only very short propodeal spines in contrast to the long and acute propodeal spines of workers of the other three species in the captiosa -group. As it clusters with species of the captiosa group in molecular phylogenies based on mitochondrial DNA ( Feldhaar et al., 2003a, Feldhaar et al., 2010) and is known to hybridize with C. captiosa locally ( Feldhaar et al., 2010, we have placed this species into this group.