|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).
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).
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).
Comments are published according to our submission guidelines. The EH Strickland Entomological Museum does not necessarily endorse the views expressed.