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Occurrence of Psorophora Howardii in Suffolk County

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Occurrence of Psorophora Howardii in Suffolk County JUNE 1992 OppnlrIoN,q,r,nNo ScrnNrruc NorES t97 OCCURRENCEOF PSOROPHORAHOWARDII IN SUFFOLK COUNTY. LONG ISLAND. NEW YORK SAMIR S. GUIRGIS Suffolk County Bureau of Vector Control, Diuision of Public Health, Yaphnnk,NY 11980 ABSTRACT. Psorophnrahnwardii has been confirmed in New York State for the first time, basedon larvae from a rain pool and an adult female from a CDC trap catch. Both collectionswere reported from Suffolk County, Long Island, NY. Psorophora howardii Coquillett is a nearctic of these, Ps. ciliata (Fabricius) is the only one specieswith a distribution range that includes that belongs to the subgenus Psorophnro. The most of the southeasternstates of the U.S. (Car- identification of Ps. howardjj. also within the penterand LaCasse1955). It wasreported as far subgenus Psorophora, makes it advisable to west as Cara Grande, Pinal County, Arizona amend these keys to include the differentiating (Richardset al. 1956)and as far north as Dav- characteristics reported by Carpenter and La- enport, Scott County, Iowa (Berry et al. 1986). Casse (1955), or by Darsie and Ward (1981). In the eastern Atlantic states, the distribution The author thanks Wayne J. Crans, Depart- of this speciesextends north to Warren County ment of Entomology and Economic Zoology, and Morris County, New Jersey(Crans 1989). Rutgers University, NJ, for confirming the iden- On August 13, 1990,two secondinstar larvae tification of Ps. howardii. were taken from a rain pool in Gardiner Park, West Bay Shore, Suffolk County, Long Island, New York. Left in a small jar overnight pending REFERENCES CITED identification, one larva disappeared,suggesting Berry, W. J., W. A. Rowley and M. Reynolds. 1986. a predacious feeding habit of this species.The Collection of Psorophnrahowardii in Scott County, remaining larva was subsequentlyidentified as Iowa.J. Am. Mosq. Control Assoc.2:563. Ps. hawardii, based on characters describedby Carpenter, S. J. and W. J. LaCasse.1955. Mosquitoes Darsie and Ward (1981).and was rearedto the of North America (north of Mexico). University of adult stageuntil it emergedas a male. The larvae California Press,Berkley. of. Ps. hnwardii are known to occur mostly in Crans,W. J. 1989.Psoroph.ora hawardi| a specieswith temporary pools and are predators of other mos- an increasingrange in New Jersey.Proc. N.J. Mosq. quito larvae with which they are associated. Control Assoc.87:57-58. Darsie, R. F., Jr. and R. A. Ward. 1981.Identification On August 29, 1997,one female Ps. howardii and geographicaldistribution of the mosquitoesof was collected in a dry ice-baited CDC trap from North America, north of Mexico. Mosq. Syst. Suppl. the same location where the larvae were found I. in 1990.These 2 collections, within 2 successive Guirgis, S. S. 1984.A new record of Culisetaannulata years, indicate that this specieshas established with notes on mosquito speciesin Suffolk County, itself in this part of New York State. Both Long Island, New York. Mosq. News 44:246. specimenshave been deposited in the collection Means, R. G. 1979.Mosquitoes of New York. Part I. of Suffolk County Bureau of Vector Control. The genusAedes Meigen with identification keys to This is the first report of Ps. howardii exist- generaof Culicidae. N.Y. State Mus. Bull. 430a. Means, ence in New York, and it brings the number of R. G. 198?.Mosquitoes of New York. Part II. Genera of Culicidae other than Aedes occurring in confirmed in (Means species the state 1987) to New York. N.Y. State Mus. Bull. 430b. 59 and in Suffolk County (Means 1979,Guirgis Richards,C. S., L. T. Nielsenand D. M. Rees.1956. 1984\ to 42. Mosquito records from the Great Basin and the Means (1987)provided identification keysfor drainage of the lower Colorado River. Mosq. News the 6 known New York statePsorophoro species; 16:10-17..
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