Influence of Some Natural Enemies on Black Scale, Saissetia spp.,1 In Florida2
Authors: MCCOY, C. W.; SELHIME, A. G.
Source: Journal of Economic Entomology, Volume 64, Number 1, February 1971 , pp. 213-217(5)
Publisher: Entomological Society of America
Abstract:Population suppression of black scale, Saissetia spp .. by natural enemies was measured by monthly sampling of hosts from 4 geographical locations in the citrus-producing areas of Florida from April 1967 through June 1968. Three generations per year occurred in all regions, the 1st (or spring) generation was virtually free from attack by natural enemies and generally increased to injurious densities by late Mayor early June. Scale populations reached a peak in July when 1st and 2nd generations overlapped. Scutellista cyanea Motschulsky was the most important natural enemy attacking black scale and was recovered in 90-100% of the mature female scales in August and September. Occasionally, Coccophagus lycimnia (Walker), Cheiloneurus inimicus Compere, and Gahaniella saissetiae Timberlake parasitized 2nd-stage nymphs and non-egg-producing females, mainly 2nd-generation scale. Also, 2 entomogenous fungi, Myiophagus sp. and Entomophthora sp., periodically infected all stages of black scale. This represents the 1st report of Myiophagus sp. from unarmored scale in Florida.
Document Type: Research Article
Publication date: February 1971
- Journal of Economic Entomology is published bimonthly in February, April, June, August, October, and December. The journal publishes articles on the economic significance of insects and is divided into the following sections: apiculture & social insects; arthropods in relation to plant disease; forum; insecticide resistance and resistance management; ecotoxicology; biological and microbial control; ecology and behavior; sampling and biostatistics; household and structural insects; medical entomology; molecular entomology; veterinary entomology; forest entomology; horticultural entomology; field and forage crops, and small grains; stored-product; commodity treatment and quarantine entomology; and plant resistance. In addition to research papers, Journal of Economic Entomology publishes Letters to the Editor, interpretive articles in a Forum section, Short Communications, Rapid Communications, and Book Reviews.
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