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The hemipterous insects and spiders of sorghum panicles in Northern Nigeria

Published online by Cambridge University Press:  19 September 2011

John MacFarlane
John MacFarlane
Affiliation:
Department of Zoology, University of Nairobi, P.O. Box 43185, Nairobi, Kenya
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Abstract

A total of 17 species of Hemiptera were collected from sorghum with compact panicles during the 1982 and 1983 cropping seasons at Samaru and Kano, Nigeria. The most important species based on time of appearance and abundance were Eurystyhis rufocunealis, Campylomma angustior and C. subflava. Paramixia suturalisand Taylorilygus vosseleri occurred in high numbers only at Samaru in 1982. Significantly more Orius spp. were collected at Kano. These species represented 95 % of all hemipterans collected.

The number of spiders per panicle were significantly lower at Samaru, up to three per panicle, than at Kano, up to 10 per panicle, in 1983. There was no relationship between the number of spiders and the number of hemipterans at Samaru, but at Kano a significant positive relationship was observed between the number of spiders and the number of immature hemipterans. The spider families Dysderidae, Thomisidae and Salticidae represented 80% of the spiders collected.

Résumé

Un total de six especes d hem ip te re a èté collecté du sorgho ayant des êpis intactes en 1982 et 1983 pendant la saison de culture à Samaru et Kano, Nigeria. Les espèces les plus importantes en se basant sur leur periode d'apparance et abondance par êpis, furent Eurystylus rufocunealis, et C. subflava. A Samaru en 1982 un grand nombre de Paramixia suturalis et Taylorilygus vosseleri a èté collecté par contre le nombre de Orius spp. collecté à Kano et significativement plus elèvé-ces espèces representent 95% d'hemipterés collectes. Le nombre d'araignées par êpi avait une valeur significative plus elevée à Kano (10 per êpi) que Samaru (3 par êpi ) en 1983. Il n'y avait pas une relation significative entre le nombre d'araignées et d'hemipteres à Samaru mais par contre une relation significative et positive fût observée à Kano entre le nombre d'araignées et celui de stages non adultes d'hemipteres—Les araignées de familles. Dysderidae, Thomisidae et Salticidae representent 80% des especes collectées.

Keywords

HemipterousHemipterasorghum paniclesEurystylus rufocunealisspidersCampylomma angustiorCampylomma subflavaParamixia suturalisTaylorilygus vosseleriOrius spp
Type
Research Articles
Information
International Journal of Tropical Insect Science , Volume 10 , Issue 3 , June 1989 , pp. 277 - 284
Copyright
Copyright © ICIPE 1989

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