International Journal of Tropical Insect Science (2008) 28, 179-184

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Pilar Chiu-Alvarado and Julio C. Rojas (2008)
Host location behaviour by two Cephalonomia spp. (Hymenoptera: Bethylidae) wasps associated with the coffee berry borer Hypothenemus hampei (Coleoptera: Curculionidae: Scolytinae)
International Journal of Tropical Insect Science 28 (4), 179-184
Abstract: The host location behaviour of two closely related bethylid parasitoids was investigated under laboratory conditions. Although both species of parasitoid attack the coffee berry borer (CBB) Hypothenemus hampei Ferrari, they differ in their diet breadth. In Y-tube olfactometer bioassays, we investigated the behavioural responses of Cephalonomia stephanoderis (Betrem), a parasitoid with a narrower diet breadth, and Cephalonomia hyalinipennis (Ashmead), a parasitoid with a wider diet breadth, to the coffee-CBB complex volatiles. The results revealed that the responses differed for the two species. In single- and dual-choice tests, C. stephanoderis was attracted to volatiles emitted by CBB-infested coffee berries, dust/frass and CBB immature stages, whereas C. hyalinipennis was not attracted to any cues from plant-host complex offered.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Julio C. Rojas

Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
environment/habitat manipulation
general biology - morphology - evolution

Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.

Hypothenemus hampei
Cephalonomia hyalinipennis (parasitoid) Hypothenemus hampei
Cephalonomia stephanoderis (parasitoid) Hypothenemus hampei