A new subterranean Crematogaster with one ommatidium from Cambodia, based on morphology and DNA (Hymenoptera: Formicidae)
Acta Entomologica Musei Nationalis Pragae 59(2): 507-511, 2019
Published online: 7th November 2019
Published in print: 31st December 2019
Abstract: A subterranean myrmicine ant Crematogaster monocula sp. nov. is described based
on two worker specimens from Cambodia. This species belongs to the C. biroi
group of the subgenus Orthocrema Santschi, 1918, which is characterized by
developed subpetiolar process, developed subpostpetiolar process and sculptured
mesosoma. The new species is easily distinguished from other species of
Crematogaster Lund, 1831 by having only one ommatidium. DNA sequences
comprising a 761 bp fragment of the 3’ region of the mitochondrial COI gene
were amplified and analyzed for C. monocula sp. nov. and other closely related
species from the same group. The interspecific COI divergence is 17.8% for C.
monocula sp. nov. and C. reticulata Hosoishi, 2009. This species is unique in
having the smallest eye in the genus Crematogaster.
Key words: Hymenoptera, Formicidae, Myrmicinae, Crematogaster, Orthocrema, subterranean, ommatidium, compound eye, DNA sequencing, Cambodia, Asia