Dispersal of five species of phlebotomine sand flies was studied in a coffee plantation near Arboledas, Colombia by mark-release-recapture studies using fluorescent powders. The estimated recapture rate for males of Lutzomyia shannoni marked and released during the day was 28.1% significantly higher than that for all other species (p < 0.05). Recapture rate of female Lu. shannoni was 9.5% and no females of the other four species were recovered. This suggests either that Lu. shannoni is a more sedentary species than the others, or that the large trees on wich these insects were captured and recaptured function as foci of lekking behaviour in males. The high recapture rates of females of this species may indicate that oviposition occurs in close proximity to the bases of these trees. Although most marked sand flies were recaptured within 200 m of their release point, a single female Lu. gomezi was recovered 960 m away 36 h after release. This suggests that the dispersal capacity of Lutzomyia species may be greater than has been though, an important consideration in future control programs directed against these insects in Leishmania-endemic areas.

The phlebotomine sand fly fauna of two coffee plantations in a Leishmania-endemic area of Norte de Santander, Colombia was studied. Regular insect collections using a variety of methods were made for three and a half years. Information was obtained on diurnal resting sites, host range and seasonal abundance for 17 species, of wich five (Lutzomyia spinicrassa, Lu. serrana,Lu. shannoni, Lu. ovallesi and Lu. gomezi) were far more numerous than the others, anthropophilic and present throughout the year. The behaviour of these and the remaining 12 species is discussed in relation to their potential role in transmission of Leishmania (Viannia) brasiliensis in the area.

Sumário Flebótomos do género Lutzomyia, subgenero Evandromyia Mang. são separados em dois grupos; os da Série infraspinosa e os da Série monstruosa. Estes são definidos e todas as espécies são catalogadas. Uma nova espécie brasileira, L. inpai, é descrita e ilustrada. A seguinte chave para machos adultos do subgênero Evandromyia é incluída: Chave para machos adultos do Subgênero Evandromyia (*)

Abstract The Lutzomyia sand flies in the subgenus Evandromyia Mang. are separated into two groups — the Series infraspinosa and the Series monstruosa. These are defined and the included species are catalogued. A Brasilian species, L. inpai n. sp. is described and illustrated. An identification key to the adult Evandromyia males is provided.