Poecilosomella borboroides ( WALKER, 1860 )

Papp, L., 2002, Eighteen New Oriental Species Of Poecilosomella Duda (Diptera: Sphaeroceridae), Acta Zoologica Academiae Scientiarum Hungaricae 48 (2), pp. 107-156 : 110

Poecilosomella borboroides ( WALKER, 1860) species group

Some of the most surprising findings were with the species of this group. Hitherto there was only one species known with the following conspicuous combination of features: arista with very long cilia, costal hairs rather long, second costal section much shorter than third. I discovered five species in this group, two of them originally described by DE MEIJERE (1908) and MALLOCH (1913), but later put in synonymy with the widespread P. borboroides ( WALKER, 1860) . The fourth species is from the Philippines and the fifth one was collected more recently from Taiwan. The five species can be distinguished mainly by the male genitalia but one can make two subgroups of the P. ornata (DE MEIJERE) and P. borboroides (WALKER) , easily recognised by the characteristics of the setae on mid tibia.

These findings underline again the risk of weakly based proposals to synonymizations of species.