Morphology and Development of the Immature Stages of Brachyufens osborni (Hymenoptera: Trichogrammatidae), an Egg Parasitoid of Broad-Nosed Weevil Species (Coleoptera: Curculionidae)
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http://dx.doi.org/10.1603/008.102.0112 |
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Títol
Morphology and Development of the Immature Stages of Brachyufens osborni (Hymenoptera: Trichogrammatidae), an Egg Parasitoid of Broad-Nosed Weevil Species (Coleoptera: Curculionidae)Data de publicació
2009Editor
Entomological Society of AmericaISSN
0013-8746Tipus de document
info:eu-repo/semantics/articleVersió de l'editorial
http://www.ingentaconnect.com/content/esa/aesa/2009/00000102/00000001/art00012Paraules clau / Matèries
Resum
The external morphology and development of the immature stages of Brachyufens
osborni (Dozier) (Hymenoptera: Trichogrammatidae), a Nearctic solitary endoparasitoid of the eggs of Pachnaeus spp. (Coleoptera: Curculi ... [+]
The external morphology and development of the immature stages of Brachyufens
osborni (Dozier) (Hymenoptera: Trichogrammatidae), a Nearctic solitary endoparasitoid of the eggs of Pachnaeus spp. (Coleoptera: Curculionidae), are reported. Under our laboratory conditions (25 C and a photoperiod of 12:12 [L:D] h),B. osbornireared in eggs of Pachnaeus litus (Germar) (Entiminae) had a developmental time of 14.7 d. Egg hatching occurred within 15 h from oviposition and mandible measurements indicated the existence of two instars. First instars were mymariform, whereas second instars were sacciform. Pupation occurred 5Ð 6 d after egg hatching and adults emerged 8 d later. On
completion of the preimaginal development, the meconium was expelled and emergence took place by biting a hole in the chorion of the host egg. Both sexes emerged at the same time, and the sex ratio was female biased (3:1). [-]
Publicat a
Annals of the Entomological Society of America, 102, 1 , p. 112-118 (7)Drets d'accés
Copyright 2009 Entomological Society of America
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