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Anastrepha Edentata and Other Fruit Flies (Diptera: Tephritidae) Detected on Key Largo, Florida

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Anastrepha Edentata and Other Fruit Flies (Diptera: Tephritidae) Detected on Key Largo, Florida Scientific Notes 173 ANASTREPHA EDENTATA AND OTHER FRUIT FLIES (DIPTERA: TEPHRITIDAE) DETECTED ON KEY LARGO, FLORIDA MICHAEL K. HENNESSEYL, WALTER P. GOULD2 AND GARY J. STECK3 lUnited States Department of Agriculture, Animal and Plant Health Inspection Service, Plant Protection and Quarantine, Center for Plant Health Science & Technology, 1730 Varsity Drive, Suite 400, Raleigh, NC 27606-5202 2United States Department of Agriculture, Animal and Plant Health Inspection Service, Plant Protection and Quarantine, 4700 River Road, Riverdale, MD 20737 3Florida State Collection of Arthropods, P.O. Box 147100, Gainesville, FL 32614 Several Anastrepha species (Diptera: Te- Ten to 16 plastic McPhail traps baited with phritidae) are quarantine pests of commercial torula yeast/borax tablets dissolved in water fruits in the New World. Florida is home to one were suspended on the branches of small trees. such pest, the introduced Anastrepha suspensa Traps were hung 2 m off the ground, placed at (Loew) (Caribbean fruit fly), plus three other 50-100-m intervals along a narrow, unpaved Anastrepha species that are not considered of trail in the park, and were checked weekly from economic importance (Foote et al. 1993; Sutton 25 Feb 1994 to 23 Feb 1996. In total, 21 A. eden- & Steck 2005). One of these latter species, tata adults were trapped on 10 different occa- Anastrepha edentata Stone, is particularly mys- sions (Table 1). This is the first substantial col- terious, as no host has ever been reported from lection of the species since 1934-1937, when the anywhere in its known range of South Florida fly was first discovered and trapped in rela- and Puerto Rico (Norrbom 2004). We attempted tively large numbers during an intensive fruit to document its phenology and discover its fly survey in South Florida (Brown 1937; Clark host(s) through bait trapping and rearing from et al. 1996). The fly has been captured on only a fruit collections in Dagny Johnson Key Largo handful of other occasions (see Norrbom 2007 Hammock Botanical State Park, Key Largo, and records of the Florida Department of Agri- Florida, during 1994-1996. Some fruit samples culture, Division of Plant Industry (FDACS/ were also taken from Long Key State Park, DPI) and Florida State Collection of Arthropods Long Key, Florida, during the same period and (FSCA)), despite extensive, routine fruit fly during earlier periods. Both areas are subtropi- trapping in nearby suburban Key Largo plus cal West Indian hardwood forests. other Florida Keys and large areas of Monroe TABLE 1. MCPHAIL TRAP (10-16 TRAPS) COLLECTIONS OF ANASTREPHA AND TOXOTRYPANA ADULTS IN NATIVE HAM- MOCK FOREST, KEY LARGO, FLORIDA 1994 1995 1996 A. edentata other A. edentata other A. edentata Males Females Males Females Males Females Males Females Males Females Jan ns nsnsns1 1 0 0 0 0 Feb 0 0 0 0 0 00 0 00 Mar 2 4 0 0 0 1 0 0 ns ns Apr 3 2 0 0 0 0 1** 0 ns ns May 0 1 0 7* 1* 0 0 0 ns ns Jun 0 0 0 0 0 00 0nsns Jul 0 0 1** 0 0 0 0 0 ns ns Aug 0 1 01*000 0nsns Sep 0 3 02*020 0nsns Oct 0 0 0 0 0 0 0 0 ns ns Nov 0 0 0 0 0 0 0 0 ns ns Dec 0 0 0 0 0 0 0 0 ns ns ns = not sampled. *A. suspensa. **T. curvicauda. 174 Florida Entomologist 92(1) March 2009 and Miami-Dade Counties by the FDACS/DPI Fruit collection months below were from Key and the United States Department of Agricul- Largo except where Long Key or Homestead is ture (USDA). noted. Fruit collections included: Olacaceae: hog The accumulated records of the last 70+ years plum, Ximenia americana L. (1684 fruit; Jun, allow us to visualize the phenology of A. edentata. Nov, Dec, 1992; Jun, Jul, Aug, 1994; May, 1995), This is shown in Fig. 1, which is based on 81 col- gulf graytwig, Schoepfia shreberi J. F. Gmel. (2356 lection records from the U.S. National Museum of fruit; Jan, Feb, Mar, Apr, 1993; Feb, Mar, 1994; Natural History (NMNH) (Norrbom 2007) and Long Key, Feb, Mar, 1993); Myrcinaceae: marl- the FSCA. As first noted by Stone (1942), the fly is berry, Ardisia escallonioides Schlecht. & Cham. present in every month of the year. The accumu- (350 fruit; Mar, 1994); Rubiaceae: smooth wild lated records indicate a bimodal distribution of coffee, Psychotria ligustrifolia (Northrop) Millsp. abundance. The largest peak occurs in Sep, after (234 fruit; Feb, 1993; Apr, Dec, 1994), White in- which the numbers of monthly records gradually digo, Randia aculeata L. (100 fruit; Mar, 1994), decline to a relative low in Feb, followed by a sec- Cheese shrub, Morinda royoc L. (92 fruit; Jul, ond, smaller peak in Mar-Apr. The fewest records 1994), Rough velvetseed, Guettarda scabra (L.) are in the months of Jun and Jul. Vent. (289 fruit; Sep, Oct, 1994), Everglades vel- Fruits from 22 identified plant species were vetseed, Guettarda elliptica Sw. (314 fruit; Sep, collected based on availability from 1992 through 1995), Snowberry, Chiococca alba (L.) Hitchc. 1995. Fruits (mature and immature, damaged (2306 fruit; Jan, Feb, 1993; Sep, Dec, 1994; Sep, and undamaged) were harvested from plants, 1995); Polygonaceae: pigeon plum, Coccoloba di- placed into mesh bags, held in a cooler with ice, versifolia Jacq. (646 fruit; Apr, Dec, 1994; Jan- and transported to the ARS laboratory at Miami aury, Mar, 1995); Rhamnaceae: darling plum, within 4 h of collection. Fruits were counted, Reynosia septentrionalis, Vrb. (542; Jun, Jul, placed into trays on vermiculite, and covered with 1994; May, 1995); Passifloraceae: passion fruit, organdy cloth. Vermiculite was sifted weekly until Passiflora suberosa L. (31 fruit; Jan, 1993; Jul, fruit was completely desiccated. Pupae were held Sep, 1994); Polygonaceae: sea grape, Coccoloba in vermiculite in Petri dishes at 23-26°C, 70-80% uvifera (L.) L. (711 fruit; Jul, Sep, 1994); Ehreti- RH, and a 14:10 light:dark regime until adult aceae: rough strongbark, Bourerria succulenta, emergence. Percentage emergence and sex ratio Jacq. var. revoluta (HBK) P. E. Schultz (1038 data were not taken. fruit; Jan, Feb, 1993; Aug, Sep, 1994); Sapotaceae: Fig. 1. Phenology Of Anastrepha edentata based on FSCA and NMNH Museum specimens and records, 1934- 1994. Scientific Notes 175 willow bustic, Dipholis salicifolia (L.) Sw. (677 givory, may explain not detecting A. interrupta fruit; Sep, 1994; Sep, 1995); Rutaceae: torchwood, larvae in the fruits. Ripe hog plums (X. ameri- Amyris elemifera L. (25 fruit; Oct, 1994); Mora- cana), another Olacaceae species that we sam- ceae: shortleaf fig, Ficus citrifolia Mill. (316 fruit; pled, were not infested with A. interrupta larvae, May, Sep, 1994); Sapindaceae: white ironwood, but were infested with A. suspensa larvae. Hypelate trifoliata Sw. (415 fruit; Sep, 1994); From the adult phenology, we can surmise that Myrtaceae: Surinam cherry, Eugenia uniflora L. A. edentata is at least bivoltine and more likely (1126 fruit; Homestead, May, 1995); Myrtaceae: multi-generational in Florida. In this regard, it is white stopper, Eugenia axillaris (Sw.) Willd. (121 similar to A. interrupta, which also has been fruit; Mar, 1995); Caricaceae: papaya, Carica pa- found in all months of the year and at lowest fre- paya L. (12 fruit; Apr, 1995); and Malpighiaceae: quency during Jun-Jul. Even though A. inter- Barbados cherry, Malpighia emarginata DC. (60 rupta is restricted to a single host, its populations fruit; Homestead, May, 1995). None of the fruit can persist year-round probably due to long adult collections yielded A. edentata specimens. Anas- lifespan (up to nearly half a year in the labora- trepha suspensa adults were reared from hog tory) and at least sporadic fruiting of the host plum for the first time. Eight adults emerged from throughout the year (Pereira et al. 2007). As the 315 fruits collected VI/17/1994. Previously, A. sus- host(s) of A. edentata has not yet been discovered, pensa had been reared from over 80 other fruits, we cannot say whether its populations persist in including papaya, Barbados cherry and Surinam like manner to A. interrupta, or whether it makes cherry which we sampled (Norrbom 2004). There use of multiple host plants to span the seasons. were 149 and 44 A. suspensa adults reared from All collecting and trapping activities were con- Barbados cherry and Surinam cherry, respec- ducted under Florida Department of Environ- tively, and none from papaya. The infestation rate mental Protection permits 93-3, 94-2, and 95-1. in hog plum was low, with only one infested fruit We thank W. Montgomery and R. Pantaleon for out of 11 collections. Additionally, only 11 A. sus- assistance in sampling, C. R. Artaud, J. Nemec, pensa were trapped (Table 1). This widespread and G. C. Steyskal for assistance in plant and in- and abundant pest of residential, agricultural, sect identifications, and J. Nemec, J. M. Parks, R. and other disturbed areas clearly is not a common H. Skinner, and R. Wilhelm of the Florida Depart- denizen of the native subtropical West Indian ment of Environmental Protection, Division of hardwood hammocks of Florida. Another common Recreation and Parks, for cooperation. Voucher fruit pest in Florida, Toxotrypana curvicauda, specimens of plants and insects were retained at was trapped on two occasions but none was reared DPI, Gainesville; photographs of fruits and plants from papaya fruit. It is an important pest of pa- identified by J. Nemec in the field were retained paya in Florida and other areas of the Neotropics by Walter Gould. This is Entomology Contribu- (Weems 1969; Norrbom 2004). tion No. 1076, Bureau of Entomology, Nematol- The failure to rear A.
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