Holocentropus McLachlan, 1878

Oláh, János & Johanson, Kjell Arne, 2010, Generic review of Polycentropodidae with description of 32 new species and 19 new species records from the Oriental, Australian and Afrotropical Biogeographical Regions 2435, Zootaxa 2435 (1), pp. 1-63 : 21

Holocentropus McLachlan

Holocentropus McLachlan, 1878: 401 .

Type species: Philopotamus dubius Rambur, 1842 , original designation.

Phryganeolitha Germar, 1813: 17 (synonymized by Barnard 1982: 294, and the International Commission on Zoological Nomenclature (ZN(S) 1591) 1985). Type species: Phryganeolitha + vetusta Germar, monotypic.

Diagnosis: The spur formula is 3,4,4. The maxillary palps each have the 1st and 2nd segments subequal in length, and are much shorter than the 3rd segment; the3rd segment of each maxillary palp originates subapically on the lateral face of the 2nd segment. The discoidal cell on each forewing and hind wing is closed; the median cell on each forewing is closed, open in the hind wings. Forewings each have apical forks 1, 2, 3, 4, and 5; hind wings each have apical forks 2 and 5. The gonopods are mostly robust and broad.

In the original description of the genus, Holocentropus was placed near Polycentropus , but in each hind wing the discoidal cell is closed and only the apical forks 2 and 5 are present. The genus is represented in Baltic Amber by 22 species. Six extant species are distributed in the Palearctic Region, and 1 species was described from the Oriental Region ( Vietnam). This single Oriental species, H. vietnamellus Malicky , has a closed discoidal cell in each hind wing, the only primary generic wing venation character otherwise distinguishing it from Polyplectropus species.