FRUGIVOROUS FLIES (DIPTERA: LONCHAEIDAE) IN IRRIGATED COFFEE PLANTATIONS IN THE NORTH OF MINAS GERAIS STATE, BRAZIL

ABSTRACT This work surveyed the frugivorous flies species (Diptera: Lonchaeidae) associated with the coffee crop of the Jaíba Project, in the north of Minas Gerais State, Brazil. Flies were collected in two coffee plantations of 0.5 ha each (areas 1 and 2) and in another one of 2 ha (area 3), all of them irrigated and grown under full sun with the red Catuaí variety. The survey of insects was carried out from January 2009 to April 2010, in the ripening phase. The insects were sampled from ripe fruits, fallen on the ground, and those picked from the plant. A total of 497 individuals were obtained, from which 245 were females and 252 were males. The identified species were Neosilba pendula (Bezzi), N. zadolicha (McAlpine & Steyskal) and N. inesperata (Strikis & Prado), with a predominance of N. pendula (94.1%). This is the first record of N. inesperata in Minas Gerais.

摘要 本研究针对巴西米纳斯吉拉斯州北部雅伊巴项目的咖啡种植园相关食果蝇类（双翅目Diptera：瘦角蝇科Lonchaeidae）开展物种调查。研究共设置三处采样种植地块：两处各0.5公顷的种植园（区域1、区域2）与一处2公顷的种植园（区域3），所有地块均采用灌溉栽培模式，全日照种植，种植品种为红色卡杜艾（red Catuaí）。昆虫调查于2009年1月至2010年4月的咖啡果实成熟期开展，样本采集自植株上的成熟果实及掉落至地面的成熟果实。本次调查共采集到497头蝇类个体，其中雌性245头、雄性252头。经物种鉴定，样本隶属于新西尔巴蝇属（Neosilba）的3个物种：下垂新西尔巴蝇（Neosilba pendula (Bezzi)）、扎多利查新西尔巴蝇（Neosilba zadolicha (McAlpine & Steyskal)）以及意外新西尔巴蝇（Neosilba inesperata (Strikis & Prado)），其中下垂新西尔巴蝇占比达94.1%，为优势物种。本研究为米纳斯吉拉斯州境内首次记录意外新西尔巴蝇。