Two species of Cecidomyiidae predacious on citrus rust mite, Phyllocoptruta oleivora, on Florida citrus
2006
Villaneuva, R.T. | Gagne, R. | Childers, C.C.
Larvae of two undescribed species of Cecidomyiidae (Diptera) were found preying upon Phyllocoptruta oleivora (Ashmead) (Acari: Eriophyidae) on Florida citrus. Identifications to genus were made from adults reared in the laboratory. The two species had distinctive larval coloration. One larval type was completely yellow and was identified as Feltiella n. sp., while the second larval type had an orange color with a transverse white band close to the mouthparts. The latter cecidomyiid was identified as belonging to a genus near Lestodiplosis in the broad sense. Feltiella n. sp. (n = 17) and the species near the genus Lestodiplosis (n = 12) consumed 33.8 [plus or minus] 4.6 (mean [plus or minus] SEM) and 43.0 [plus or minus] 6.4 citrus rust mite eggs; 14.2 [plus or minus] 1.4 and 15.0 [plus or minus] 2.0 citrus rust mite nymphs, and 3.0 [plus or minus] 0.4 and 5.6 [plus or minus] 0.9 citrus rust mite adults/10 min., respectively. There were no significant differences (P > 0.05) in the consumption rates of either predator on any rust mite life stage. These data indicate that Feltiella n. sp. and the species near the genus Lestodiplosis are both efficient predators of P. oleivora eggs, larvae, and nymphs.
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