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SEX-SPECIFIC HABITAT UTILIZATION BY BAGWORMS (LEPIDOPTERA: PSYCHIDAE)

Published online by Cambridge University Press:  31 May 2012

Marc Rhainds ,
Gerhard Gries  and
Ahmad Saleh
Marc Rhainds
Affiliation:
Centre for Pest Management, Department of Biological Sciences, Simon Fraser University, Bumaby, British Columbia, Canada V5A 1S6
Gerhard Gries*
Affiliation:
Centre for Pest Management, Department of Biological Sciences, Simon Fraser University, Bumaby, British Columbia, Canada V5A 1S6
Ahmad Saleh
Affiliation:
London Sumatra Indonesia, Bah Lias Research Station, Medan, Sumatra Utara, Indonesia
*
1To whom correspondence should be addressed.
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Bagworms (Lepidoptera: Psychidae) have an unusual life history (Borror et al. 1989). Following eclosion, apterous females stay within their pupal case and the protective bag they constructed as larvae. Females attract winged males by expelling pheromone-impregnated scales outside of their pupal case into the lower extremity of the bag. Sexual segregation of pupation sites has been found in three bagworms, Thyridopteryx ephemeraeformis (Haworth) (Gross andFritz 1982), Oiketicus kirbyi (Guilding) (Rhainds et al. 1995a, 1995b), and Metisa plarza (Mlker) (Rhainds, unpublished). In all three bagworms, proportionately more female than male larvae pupate in the upper strata of trees. Pupation of females in upper sites is adaptive because it may enhance any to all of the following: pheromone dissemination (Gross and Fritz 1982), mate attraction (Rhainds et al. 1995a, 1995b), progeny development (Rhainds, unpublished), and dispersal of neonatal larvae (Cox and Potter 1988). We report habitat segregation between male and female pupae of the bagworm Clania cramerii (Mstwood) (Thangavelu and Ravindranath 1985).

Type
Note
Information
The Canadian Entomologist , Volume 129 , Issue 1 , February 1997 , pp. 199 - 200
Copyright
Copyright © Entomological Society of Canada 1997

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References

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