Aphelocheirus philippinensis USINGER 1938

Zettel, H. & Pangantihon, C. V., 2010, Aphelocheirus (s. str.) freitagi nov. sp. from Mindoro Island and additional notes on Philippine Aphelocheiridae (Heteroptera), Linzer biologische Beiträge 42 (2), pp. 1353-1362 : 1356-1357

Aphelocheirus philippinensis USINGER 1938

Aphelocheirus philippinensis USINGER 1938: 307 ; POLHEMUS & POLHEMUS 1989: 203; ZETTEL 1999: 114.

A d d i t i o n a l m a t e r i a l e x a m i n e d: L u z o n: 12, 21 (brachypterous), 1 (macropterous) labelled "Philippinen: Nueva Viscaya \ Santa Fe , Imugan, stream at\ Imugan Falls, 1000m, 6.11.\ 2002, leg. H. Zettel (325)" (vouchers also in Biologiezentrum Linz, Austria and in Coll. Nico Nieser, Tiel, The Netherlands) ; 2 (brachypterous) labelled " Philippinen: Nueva Viscaya \ Santa Fe , Barakbak, 620m \ Barakbak Riv., 7.11.2002 \ leg. H. Zettel (326)" ; 2, 5 (brachypterous), 1 (macropterous) labelled " Philippinen: Nueva Viscaya \ Santa Fe , Malico , Inacio \ Inacio River, 1200 m, 8.11.\ 2002, leg. H. Zettel (330)" ; 3, 1 (brachypterous) labelled " Philippinen: Nueva Viscaya \ Santa Fe, Malico, small\ creek, 8.11.2002 \ leg. H. Zettel (332)" ; 4, 5 (brachypterous) labelled " Philippines: Luzon , Mountain \ Prov. , Sagada, Underground Riv.,\ upstream cave, 1450m \ 17°05'N 120°54'E, 13.3.\1995, leg. H. Freitag (4)" ; 1, 1 (brachypterous) labelled " Philippines: Luzon , Mountain \ Prov. , Sagada, Underground Riv.,\ downstream cave, 1450m \ 17°05'N 120°54'E, 14.3.\ 1995, leg. H. Freitag (5)" .

N o t e s: Aphelocheirus philippinensis usually inhabits small and middle-sized, fast flowing streams ( POLHEMUS & POLHEMUS 1989, and personal observations). It seems to need cold, clean water and, therefore, strong populations can only be found in areas with forest cover. Regionally, it might have become extinct already – there are no records from Central Luzon since the original description – and generally this species must be regarded as endangered.

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D i s t r i b u t i o n: This species is only known from Luzon: Mountain Province, Benguet, Ifugao, Laguna ( USINGER 1938, POLHEMUS & POLHEMUS 1989, ZETTEL 1999); first records for Nueva Viscaya Province.