author(s)
Shanasree M and Sumodan PK

abstract
A survey of tree holes in Wayanad district of Kerala was conducted from June 2017 to November 2018. Out of 112 tree holes encountered during the survey 55 (49.1%) were with rain water. All the 55 tree holes were positive for mosquito breeding. A total of 7 species of mosquitoes under five genera viz., Aedes albopictus, Aedes chrysolineatus, Armigeres subalbatus, Culex brevipalpis, Culex quinquefasciatus, Heizmannia chandi and Toxorhynchites splendens were obtained from these habitats. Culex brevipalpis was found breeding in 50 sites (90.9%), Aedes chrysolineatus in 43 sites (78.2%) Aedes albopictus in 41 sites (74.5%); Heizmannia chandi in 30 sites (54.55%), Armigeres subalbatus in 23 sites (41.8%), Culex quinquefasciatus in 10 sites (18.2%) and Toxorhynchites splendens in 2 sites (3.6%). Co-breeding of 2 to 5 species were observed in 53 habitats. The breeding of Aedes albopictus, the vector of Dengue and Chikungunya in the tree holes calls for serious attention from the Public Health authorities.