|scientific name Hercinothrips femoralis |
common name Sugarbeet Thrips
On plants in greenhouses, houses and malls in Alberta (Heming).
The body is 1.2 to 1.6mm in length, and legs are yellow, except for the mid and hind femora, which are brown. The head is strongly reticulate, and yellow, except for cheeks and the ocellar hump, which are brown. Antennal segments 1 and 2, as well as the apical portion of segments 4 and 5 are shaded with brown. Antennal segments 6 and 8 are dark brown, and segments 3 and the basal two thirds of segments 4 and 5 are yellow. The sense cones on antennal segments 3 and 4 are forked. Forewings are narrow and brown in color, with pale areas near the base and apex of the wing. Venal setae are long and dark (Wilson, 1975).
All life stages are occur on the host plant, including pupal stages (Wilson, 1975).
Considered a pest. Less common in greenhouses due to pesticide use (Mound & Marullo, 1996).
This species is phytophagous (Mound and Marullo, 1996) and feeds on the leaves of numerous greenhouse plants including tomato, Brassia sp., sugar beet, philodendron, Easter lily, banana, begonia and orchid (Chiasson, 1986).
Widespread through the tropical, and subtropical regions of the world (Wilson, 1975), this insect is found in greenhouses, houses and malls in Alberta (Heming).
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