Annals of the Entomological Society of America (2015) 108, 211-214

Richard L. Roehrdanz and Sheila Sears Wichmann (2015)
28S Ribosomal RNA sequences separate five prominent Lygus (Hemiptera: Miridae) pest species into three species clusters
Annals of the Entomological Society of America 108 (2), 211-214
Abstract: A segment of the nuclear 28S rRNA gene was compared among six species of Lygus [Lygus hesperus (Knight), Lygus keltoni (Schwartz), Lygus borealis (Kelton), Lygus elisus (Van Duzee), Lygus lineolaris (Palisot de Beauvois), and Lygus vanduzeei (Knight)]. The DNA sequences were separate into three main groups. The LL group contains L. lineolaris and L. vanduzeei. Group LBLE is composed of L. elisus and most of L. borealis. Group LH includes L. hesperus and most of L. keltoni. Some L. keltoni were part of the LBLE group and some L. borealis were part of the LH group. The 28S region does not contain sufficient genetic polymorphism to delineate species. The apparent polyphyly of L. borealis and L. keltoni could reflect historic interbreeding, recent development of a hybrid swarm, or highlight inadequacies of morphospecies identification.
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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.
	Lygus lineolaris
	Lygus elisus
	Lygus borealis
	Lygus hesperus
	Lygus keltoni