Annals of the Entomological Society of America (1998) 91, 392-394

G. Zuniga, R. Cisneros and Y. Salinas-Moreno (1998)
Chromosome numbers of Dendroctonus parallelocollis and D. rhizophagus (Coleoptera : Scolytidae) and new reports of Dendroctonus populations from Mexico and Guatemala
Annals of the Entomological Society of America 91 (4), 392-394
Abstract: The male meiotic karyotypic formulae of Dendroctonus parallelocollis Chapuis and D. rhizophagus Thomas and Bright are 13 AA + Xyp. These karyotypes are similar to those from D. valens LeConte (13 AA + Xyp) and D. terebrans Olivier (12 AA + Xyp), a situation that confirms the taxonomic grouping of these species by morphological, characteristics and their status as closely related species. The chromosome numbers and the sexual systems of populations of Dendroctonus adjunctus LeConte, D. approximatus Dietz, D. frontalis Zimmermann, D. mexicanus Hopkins, and D. valens agree with what has been published for these species. No geographic variation in the karyotypes, supernumerary chromosomes, or irregular associations were observed in the species examined.
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Database assignments for author(s): Gerardo Zuniga

Research topic(s) for pests/diseases/weeds:
identification/taxonomy

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Dendroctonus frontalis
	Dendroctonus adjunctus
	Dendroctonus parallelocollis
	Dendroctonus valens
	Dendroctonus rhizophagus
	Dendroctonus terebrans
	Dendroctonus approximatus
	Dendroctonus mexicanus