Armored scale insects (Hemiptera: Diaspididae) associated with avocados (Persea americana) in Mxicos main production areas, with keys for identification and natural enemies.

Avocado orchards in eight avocado-producing states of Mxico were sampled to collect and identify the armored scale insect species (Hemiptera: Diaspididae) that attack the crop and their natural enemies. Sixteen species of armored scales were identified, 12 from the subfamily Aspidiotinae and four from Diaspidinae. A dichotomous key is provided for the identification of the 18 armored scale species associated with avocado in central Mxico.

Transmission of Citrus leprosis virus C by the Mite, Brevipalpus yothersi (Acari: Tenuipalpidae), on Four Species of Citrus.

Transmission of the virus, Citrus leprosis virus C (CiLV-C) (Cilevirus) by Brevipalpus yothersi Baker, on different citrus species was evaluated under greenhouse conditions. First, the relationship between acquisition access periods (AAPs; 1, 12, 24, 36, and 48 h) and virus concentration in mites was determined. Second, the ability of B.

Analysis of Genetic Variation in Brevipalpus yothersi (Acari: Tenuipalpidae) Populations from Four Species of Citrus Host Plants.

We studied species diversity and genetic variation among populations of Brevipalpus mites from four species of citrus host plants. We sampled mites on orange, lime, grapefruit and mandarin trees from orchards at six localities distributed in the five most important citrus producing states in Mexico. Genetic variation among citrus host plants and localities were assessed by analysis of nucleotide sequence data from fragments of the mitochondrial cytochrome oxidase subunit I (COI).

Toxicity and Residual Activity of Insecticides Against Tamarixia triozae (Hymenoptera: Eulophidae), a Parasitoid of Bactericera cockerelli (Hemiptera: Triozidae).

Bactericera cockerelli (Sulc) (Hemiptera: Triozidae) is one of the most economically important pests of potato, tomato, and peppers in Central America, Mexico, the United States, and New Zealand. Its control is based on the use of insecticides; however, recently, the potential of the eulophid parasitoid Tamarixia triozae (Burks) (Hymenoptera: Eulophidae) for population regulation has been studied. Because T.