Host-range study on the stem-boring weevil ( Listronotus setosipennis ( Coleoptera : Curculionidae ) for the control of Parthenium hysterophorus in Ethiopia . By Sintu Alemayhu. Objective. To evaluate the safety of the stem-boring weevil, Listronotus setosipennis non-target plant species.
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Host-rangestudy on the stem-boring weevil (Listronotussetosipennis (Coleoptera: Curculionidae) for the control ofPartheniumhysterophorus in Ethiopia
By Sintu Alemayhu
Lay eggs in flower heads or leaf bases
Nocturnal adults feed on leaves and flowers
hatch 3-5 days later
Complete life cycle of Listronotustakes30-35 days.
pupate in soil inside fibrous capsules
Figure 1. Diagrammatic representation of the tribe Heliantheae and some crop plants (adapted by Lorraine Strathie from Wapshere, A. J. 1974).
The safety of Listronotus setosipennis (Hustache) to 39 non-target plants consisting of
Helianthus annus (oissa)
Table 1. Result of Host-Specificity of Listronotus setosipennis (Hustache) on major crops