|Common name: Red washed prominent
Identification: Rfw 18.6 mm, groundcolor two toned, tawny and
blue-gray; outer margin slightly concave near tornal angle. Members
of the genus Oligocentria are distinguished from the related genera Heterocampa and Lochmaeus by the
evenly narrow Rs cell above the discal cell on the hw and from members
of the Notodontinae in having the male antennae pectinate with the
pectinations abruptly shorter at about 2/3 the antennal length, the
apical 1/3 is simple.
Distribution: southern Canada and United States.
Hosts: Larval have been reported from a wide variety of plants
including- Alder- Alnus, Birch- Betula, Rose- Rosa, Poplar-
Salix, and Oak-
ND. Cass Co. 18- VII- 1961.
R. W. Poole.
Forewing of O. semirufescens, reniform spot
represented by a black dot.