The 2005 ESA Annual Meeting and Exhibition
December 15-18, 2005
Ft. Lauderdale, FL

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Friday, December 16, 2005

Life cycle of Cybocephalus nipponicus Endr÷dy-Younga, a predator of the cycad aulacaspis scale, Aulacaspis yasumatsui Takagi

Trevor Randall Smith,, University of Florida, Entomology and Nematology Department, Bldg. 970, Natural Area Drive, PO Box 110620, Gainesville, FL and Ronald D. Cave,, University of Florida, Indian River Research & Education Center, 2199 South Rock Road, Ft. Pierce, FL.

The cycad aulacaspis scale (Aulacaspis yasumatsui Takagi) is the most damaging scale found on cycads in Florida. The first detection of the cycad scale in Florida occurred in 1996 in Miami at the Montgomery Botanical Center (MBC). In Florida no natural enemies have been found. For this reason two natural enemies were released in Homestead, Florida in 1998. These natural enemies were a parasitic wasp, Coccobius fulvus (Compere and Annecke), and a predacious beetle, Cybocephalus nipponicus Endr÷dy-Younga (incorrectly identified and released as Cybocephalus binotatus Grouvelle). The life cycle of C. nipponicus was studied by rearing the beetle on A. yasumatsui. The mean developmental time of the egg (7.3 days, SD 0.83), larval (13.66 days, SD 1.09), and pupal (18.57 days, SD 1.57) stages were determined. Mortality in each life stage, adult longevity, and adult sex ratios were also determined.

Species 1: Coleoptera Cybocephalidae Cybocephalus nipponicus
Species 2: Coleoptera Cybocephalidae Cybocephalus binotatus
Species 3: Hemiptera Diaspididae Aulacaspis yasumatsui (cycad aulacaspis scale)
Keywords: Biological control

Poster (.ppt format, 20250.0 kb)