|scientific name Anaphothrips obscurus |
Various grasses and cereals, Poa sp., Calamagrostis canadensis, Bromus sp.
Adults collected in June, July, and August.
Body is around 1.5mm in length, not heavily reticulated, and yellowish. Antennae have 9 segments, though the suture between segments 6 and 7 is not complete. Antennal segments 3 and 4 have forked sense cones (Stannard, 1968). Pronotum lacks conspicuous setae. Macropterous forms are most common, but brachypterous and apterous forms may also occur (Bailey, 1957). Forewings are grayish yellow (Stannard, 1968).
Females of A. obscurus hibernate in the shoot sheaths of grasses over the winter. There is both a macropterous, and brachypterous form for females of this species (Ananthakrishnan, 1984). Males are unknown in North America (Heming).
Is considered a pest as it can be quite destructive to oat and wheat crops (Ananthakrishnan 1984).
Feeds on grasses, or the heads of grasses (Stannard, 1968).
Generally found in temperate regions of the world (Mound and Kibby, 1998), including Quebec, Ontario, Alberta & B.C. in Canada (Chiasson, 1986).
Comments are published according to our submission guidelines. The EH Strickland Entomological Museum does not necessarily endorse the views expressed.