A lonchaeid fly, Neosilba batesi, first described by Curran in 1932 from Guatemala, is here reported in Florida as of September 1994, a new U.S. record

Ahlmark, Kurt

Steck, Gary J.

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116  Volume 11, No.2, June, 1997, INSECTA MUNDI A new U.S. record for a secondary fruit infester, Neosilba batesi (Curran) (Diptera: Lonchaeidae) Kurt Ahlmark and Gary J. Steck Florida State Collection of Arthropods, Division of Plant Industry, Florida Department of Agriculture and Consumer Services, P.O. Box 147100, Gainesville, FI32614-7100, U.S.A. A lonchaeid fly, Neosilba batesi, first described by Curran in 1932 from Guatemala, is here report-ed in Florida as of September 1994,  a  new U.S. record.  Five larvae found infesting avocado fruit were reared to adults. The authors first identified the adults and our initial determination was con-firmed by Dr. Al Norrbom of the Systematic Ento-mology  Laboratory,  USDA,  Washington,  D.C.  A number of other specimens were subsequently col-lected and are recorded here as well. The species is probably a  secondary invader of fruit, following initial attack by Anastrepha  fruit flies, as observed in several other lonchaeid species (Curran, 1932; McAlpine and Steyskal, 1982; Souza et al., 1983). Neosilba  batesi  is  polyphagous,  now  having been recorded from fruit of Mangifera indica L. (mango) and seedpods of  Inga (Curran, 1932); fruit of Citrus sinensis (L.) (sweet orange), Caricapapa-ya L.  (papaya), Guilielma gasipaes (Bactris gasi-paes H.B.K.) (peach palm), and Persea americana Mill. (avocado) (McAlpine andSteyskal, 1982). The recorded geographic range of N.  batesi, including areas of possible recent introduction, is Colombia, Panama and Mexico (McAlpine and Steyskal, 1982), Guatemala (Curran, 1932), and now Florida. Neosilba batesi joins congeners N.  nigrocaer-ulea (Malloch) and N. perezi (Romero and Ruppel) as confirmed residents of Florida (McAlpine and Steyskal,  1982).  The  genus  Neosilba  is  readily recognized by its setulose lunule, plumose arista, and calypteres fringed  with long blackish set-ae. Species are nearly impossible to differentiate from each other without examining genitalia.  At  this juncture, the reader is encouraged to reference the excellent treatment and illustrations of Neosilba specifically, and  Lonchaeidae generally, in McAlpine and Steyskal (1982). Specimen Data: FLORIDA: Dade Co., Hiale-ah, IX-1994, D.  Chalot, 3 males, 2 females, reared from  larvae in avocado fruit  wound;  28-X-1994, Roberto Erb, 1 male, 2 females ex McPhail trap; 3-XI-1994, Roberto Erb, 3 specimens ex McPhail trap; 10-XI-1994, Roberto Erb, 9 specimens ex McPhail trap. The authors wish to thank Debra Chalot and Roberto Erb of the Florida Department of Agricul-ture  and  Consumer Services,  Division  of Plant Industry and M.  Hennessey of the United States Department of  Agriculture, Agricultural Research Service for  their keen collection  efforts.  We  also thank Al Norrbom for the identification confirma-tion. Florida Department of Agriculture and Con-sumer Services, Entomology Contribution No. 844. References Curran, C.H., 1932. New American Diptera. American Museum Novitates, 534.  16 pp. McAlpine, J.F. and Steyskal, G.C., 1982. A revision of Neosilba McAlpine with a key to the world genera of Lonchaeidae  (Diptera).  The  Canadian  Entomolo-gist, Vol.  114:  105-129. McAlpine,J.F. 1987. Lonchaeidae, pp .791-797 .InMan-ual of Nearctic Diptera, Vol. 2,  Monog. 28, Res. Br., Agric., Canada. Souza, H.M., Cytrynowicz, M., Morgante, J.S., Pay-an,O.H., 1983. Occurrence of Anastrephafratercu-lus (Wiecl.), Ceratitis capitata (Wied.) (Diptera, Te-phritidae) and  Silba spp.  (Diptera,  Lonchaeidae) eggs in oviposition bores on three host fruits. Revis-ta Brasileira Entomologia, 27(3/4):  191-195. 

A revision of Neosilba McAlpine with a key to the world genera of Lonchaeidae (Diptera).

Lonchaeidae, pp .791-797

Occurrence of Anastrephafraterculus (Wiecl.), Ceratitis capitata (Wied.) (Diptera, Tephritidae) and Silba spp. (Diptera, Lonchaeidae) eggs in oviposition bores on three host fruits.

A new U.S. record for a secondary fruit infester, Neosilba baresi (Curran) (Diptera: Lonchaeidae)

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