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Dry season parasitoids of adult corn leafhoppers (Hemiptera: Cicadellidae) on irrigated maize in Mexico

Published online by Cambridge University Press:  02 April 2012

Gustavo Moya-Raygoza ,
Jeyaraney Kathirithamby  and
Kirk J. Larsen
Gustavo Moya-Raygoza*
Affiliation:
Departamento de Botanica y Zoologia, Centro Universitario de Ciencias Biológicas y Agropecuarias (CUCBA), Universidad de Guadalajara, km 15.5 carretera Guadalajara-Nogales, Las Agujas, Zapopan, Codigo Postal 45110, Apartado Postal 139, Jalisco, Mexico
Jeyaraney Kathirithamby
Affiliation:
Department of Zoology, Oxford University, South Parks Road, Oxford OX1 3PS, United Kingdom
Kirk J. Larsen
Affiliation:
Department of Biology, Luther College, 700 College Drive, Decorah, Iowa 52101, United States of America
*
1 Corresponding author (e-mail: [email protected]).
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Abstract

Parasitoids of adult corn leafhoppers, Dalbulus maidis (DeLong et Wolcott), were studied in irrigated maize (Gramineae) growing during the dry season in Mexico. Dalbulus maidis was parasitized by Metadorylas spinosus (Hardy) (Diptera: Pipunculidae), Halictophagus naulti Kathirithamby et Moya-Raygoza (Strepsiptera: Halictophagidae), and Gonatopus bartletti Olmi (Hymenoptera: Dryinidae) at 24 of the 54 sites where D. maidis were collected. Greater rates of parasitism occurred at higher elevations (R2 = 0.41) and at more southern latitudes (R2 = −0.52). Metadorylas spinosus is a previously unreported parasitoid of D. maidis, and this is the first report of H. naulti parasitizing Dalbulus elimatus (Ball) and Dalbulus gelbus DeLong. Gonatopus bartletti has the broadest geographic and temporal distribution of the parasitoids found.

Résumé

Nous avons étudié les parasitoïdes des adultes des cicadelles du maïs, Dalbulus maidis (DeLong et Wolcott), dans des cultures irriguées de maïs (Gramineae) au Mexique pendant la saison sèche. Les cicadelles sont parasitées par Metadorylas spinosus (Hardy) (Diptera: Pipunculidae), Halictophagus naulti Kathirithamby et Moya-Raygoza (Strepsiptera: Halictophagidae) et Gonatopus bartletti Olmi (Hymenoptera: Dryinidae) à 24 des 54 sites où elles ont été récoltées. Les taux de parasitisme sont plus grands aux altitudes plus élevées (R2 = 0,41) et aux latitudes plus australes (R2 = −0,52). Metadorylas spinosus est mentionné comme parasitoïde de D. maidis pour la première fois; c'est aussi une première mention de H. naulti comme parasitoïde de Dalbulus elimatus (Ball) et de Dalbulus gelbus DeLong. De tous les parasitoïdes recensés, c'est G. bartletti qui possède les répartitions géographique et temporelle les plus étendues.

[Traduit par la Rédaction]

Type
Articles
Information
The Canadian Entomologist , Volume 136 , Issue 1 , February 2004 , pp. 119 - 127
Copyright
Copyright © Entomological Society of Canada 2004

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