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Species Page - Heliothrips haemorrhoidalis
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scientific name    Heliothrips haemorrhoidalis    

common name     Greenhouse Thrips

In temperate regions on plants in greenhouses, houses and malls (Heming).

Adults are found year round in greenhouses or malls (Heming).

The body is blackish-brown, though the terminal abdominal segments are lighter, and the legs are white. The head is strongly sculptured with large hexagonal reticulations, but lacks a prominent dorsal ridge. Setae on the head are small and consist of two pairs of widely spaced post-ocular setae, with a seta in front of each posterior ocellus. Terminal antennal segments are very long, and segments 3 and 4 have simple sense cones. The pronotum and sides of the abdominal tergites are covered with large hexagonal reticulations (Wilson, 1975).

life history
H. haemorrhoidalis has two larval stages, a propupal, and a pupal stage (Heming). All life stages are spent on the host plant(s), unlike some other species of Thripidae which pupate in the ground. This species also reproduces parthenogenetically. (Mound and Kibby, 1998)

This insect is considered a minor pest on greenhouse plants (Chiasson, 1986).

diet info
In the wild, H. haemorrhoidalis feeds on the leaves of tea and coffee plants, citrus, and mango trees, in addition to other tree species. In Alberta, this species feeds on the leaves of many greenhouse plants including azaleas, holy fern, philodendron, Easter lily, and mango (Chiasson, 1986).

Widespread through the tropical regions of the world (Mound and Kibby, 1998), this insect is found in greenhouses, malls, and houses in Alberta (Heming).

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