Florida Entomologist (2005) 88, 123-128

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Richard W.H. Pluke, Ana Escribano, J.P. Michaud and Philip A. Stansly (2005)
Potential impact of lady beetles on Diaphorina citri (Homoptera: Psyllidae) in Puerto Rico
Florida Entomologist 88 (2), 123-128
Abstract: The first detections of Asian citrus psyllid, Diaphorina citri Kuwayama, in North America occurred almost simultaneously in Florida and in the Caribbean (Guadeloupe). Damaging populations on citrus have been reported in Florida but not in Puerto Rico where the psyllid was first detected in 2001, having probably arrived with its parasitoid, Tamarixia radiata Waterston. In an effort to identify additional sources of mortality, the relative abundance of coccinellid species was estimated on 180 citrus trees from early April to early July 2003. The most abundant species were Coelophora inaequalis F. (38.8%) and Cycloneda sanguinea limbifer L. (31.3%), and the least abundant were Cladis nitidula F. (5.9%), Coleomegilla innonata Mulsant (4.8%), Chilocorus cacti L. (2.1%), Scymnus sp. (5.9%), Hippodamia convergens Guerin (2.4%), and Cryptolaemus montrouzieri Mulsant (8.8%). These eight species were collected from citrus production areas in Puerto Rico for a laboratory study of feeding behavior. All eight consumed D. citri nymphs, with C. innonata consuming psyllids at a greater rate than C. cacti or Scymnus sp. Choice tests showed that C. inaequalis and C. s. limbifer preferred brown citrus aphid (BCA) Toxoptera citricida to D. citri as prey, whereas C. nitidula and C. cacti (both Chilochorini) preferred D. citri . Our results suggest that coccinellid species could play an important role as predators of the psyllid in Puerto Rico and contribute to its natural control.
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Full text of article
Database assignments for author(s): J.P. Michaud, Philip A. Stansly

Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:

Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.

Diaphorina citri U.S.A. (SE)
Diaphorina citri Citrus (genus) Puerto Rico
Cryptolaemus montrouzieri (predator) Diaphorina citri Citrus (genus) Puerto Rico
Hippodamia convergens (predator) Diaphorina citri Citrus (genus) Puerto Rico
Coelophora inaequalis (predator) Diaphorina citri Citrus (genus) Puerto Rico
Cycloneda sanguinea (predator) Diaphorina citri Citrus (genus) Puerto Rico
Chilocorus cacti (predator) Diaphorina citri Citrus (genus) Puerto Rico
Tamarixia radiata (parasitoid) Diaphorina citri Citrus (genus) Puerto Rico
Cladis nitidula (predator) Diaphorina citri Citrus (genus) Puerto Rico
Coleomegilla innonata (predator) Diaphorina citri Citrus (genus) Puerto Rico