Annals of the Entomological Society of America (1996) 89, 700-709

Ralph W. Howard and Francisco Infante (1996)
Cuticular hydrocarbons of the host-specific ectoparasitoid Cephalonomia stephanoderis (Hymenoptera: Bethylidae) and its host the coffee berry borer (Coleoptera: Scolytidae)
Annals of the Entomological Society of America 89 (5), 700-709
Abstract: Cuticular hydrocarbons have been identified from larvae and adults of the bethylid wasp Cephalonomia stephanoderis Betrem and larval, prepupal, pupal, and adult stages of its host, the scolytid beetle Hypothenemus hampei (Ferrari). Larval, male and female wasps have the same cuticular hydrocarbons, but in different relative abundances. The major components of adults are n-alkanes (C₂₁-C₃₃), monomethyl alkanes (3-, 5-, 7-, 9-, 10-, 11-; 12-, 13-, 14-, 15-, 16-, and 17-methyl), and Z-(10)-monomethyl alkenes (with the methyl branch at C₁₁-C₁₆). Minor components include a series of 3,X-; 4,X-; 5,X-; 6,X-; 7,X-, and 8,X-dimethyl alkanes (with X at C₁₄-C₁₉) and a series of 3,9,13- and 3,11,15-trimethyl alkanes. Male C. stephanoderis are characterized by high proportions of n-alkanes and lower proportions of the monomethyl alkanes and methylbranched alkanes. Female wasps are characterized by lower proportions of n-alkanes and higher proportions of the monomethyl alkanes and methylbranched alkanes. Larval C. stephanoderis are characterized by high proportions of the methylbranched components and lower proportions of the n-alkanes and the n- and methyl-branched alkanes. Host scolytid beetle cuticular hydrocarbons are totally saturated. Major components of all stages and sexes include n-alkanes (C₂₂ - C₃₁), monomethyl alkanes (3-, 4-, 5-, 13-, 14-, 15-, 16- and 17-methyl), a series of dimethyl alkanes (3,7-; 3,9-; 3,15-; 3,17-; and 3,19-), and a series of trimethyl alkanes (3,7,13-; 3,9,13-; and 3,11,15-). Minor components are a series of 4,14- and 4,16-dimethyl alkanes and 5,17- and 5,19-dimethyl alkanes. All immature beetle stages had similar hydrocarbon compositions, which differed moderately from those of the adults. As with the adult wasps, relative compositions of male and female beetles differed. Males were characterized by a greater proportion of n-alkanes and lesser proportions of monomethyl alkanes and trimethyl alkanes. Females had lesser proportions of n-alkanes and greater proportions of monomethyl alkanes and trimethyl alkanes. The cuticular profiles of the parasitoid and host are compared and discussed in terms of both intra specific and interspecific semiochemical interactions.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Database assignments for author(s): Francisco Infante

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

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Hypothenemus hampei
Cephalonomia stephanoderis (parasitoid)