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EMERGENCE BEHAVIOUR, SEX RATIOS, AND THE TIMING OF ECLOSION IN PARAPEDIASIA TETERRELLA (LEPIDOPTERA: PYRALIDAE)

Published online by Cambridge University Press:  31 May 2012

Larry D. Marshall
Larry D. Marshall
Affiliation:
Petawawa National Forestry Institute, Box 2000, Chalk River, Ontario, Canada K0J 1J0
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Abstract

Parapediasia teterrella Bleszynski adults eclose in New Mexico during the months of June, July, and August. Nightly emergence occurred within 40 min and this time period became earlier in the scotophase as the season progressed, particularly during July. The timing of this period does not seem to be related to either temperature or photoperiod.

Though males emerged before females on each night, sex ratios of emerging moths were consistently 1:1. Following a short sedentary period while their wings dried, the moths left the emergence site.

Résumé

Les adultes du papillon nocturne Parapediasia teterrella Bleszynski sont presents au Nouveau Mexique en juin, juillet et août. L’éclosion journalière a lieu à l’intérieur d’une periode de 40 min et cette periode avance dans le temps avec le progres de la saison (surtout en juillet). Cette avance ne paraît pas être associée avec la température ou la photopériode.

Bien qui à chaque nuit les mâles émergent un peu avant les femelles, les rapport des sexe sont toujour de 1 : 1. A la suite à une courte période sédentaire pendant lequelle leurs ailes sèchent, les papillons quittent leur site à éclosion.

Type
Articles
Information
The Canadian Entomologist , Volume 126 , Issue 4 , August 1994 , pp. 925 - 928
Copyright
Copyright © Entomological Society of Canada 1994

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