New records of the Asian citrus psyllid, Diaphorina citri Kuwayama, predators in northeast Mexico
New records of the Asian citrus psyllid, Diaphorina citri Kuwayama, predators in northeast Mexico
Tuesday, November 12, 2013
Exhibit Hall 4 (Austin Convention Center)
Since 12 years ago, we have conducted explorations in the citrus orchards of northeastern Mexico, with the primary objective to know the beneficial fauna associated with citrus plantations in the region, mainly entomophagous insects that attack pests of the citrus tree. During the invasion of the Mexican citrus industry in 2000 by Toxoptera citricida Kirkaldy (Homoptera: Aphididae), the Citrus Tristeza Virus vector, generalist predator species from the families Chrysopidae and Hemerobiidae (Neuroptera), Coccinellidae (Coleoptera) and Syrphidae (Diptera) were identified by its role in the predation of such insect. During the detection of Asian citrus psyllid (ACP) [Diaphorina citri Kuwayama (Hempitera: Psyllidae)], the vector of Huanglongbing in the country, most of T. citricida predatory species also have been observed in attack of this invasive species, plus Coleomegilla maculata De Geer (Coleoptera: Coccinellidae) and Brachygastra mellifica (Say) (Hymenoptera: Vespidae) recorded in 2010. During 2012 we found predator species that are new records of D. citri natural enemies. The ladybug Mononeda marginata (L.) (Coleoptera: Coccinellidae) in larval and adult stage preys voraciously ACP nymphs (larva preyed 1085 ACP nymphs). Nymphs and adults of the western big-eyed bug Geocoris pallens Stál and the big-eyed bug G. punctipes (Say) (Hemiptera: Geocoridae) attack the ACP nymphal and adult stages (adult preyed 149 ACP nymphs/30 days). Notably, we observed adults of the copper beetle Bothrotes canaliculatus acutus (LeConte) (Coleoptera: Tenebrionidae) preying ACP eggs and nymphs (adult preyed 1949 ACP nymphs/44 days). Studies continue to determine the potential of these species in the biological control of ACP in Mexico.