Culicid and Chaoborid flies (Diptera : Culicidae and Chaoboridae) attracted to a CDC miniature frog call trap at Iriomote Island, the Ryukyu Archipelago, Japan

Abstract

Mosquito collections were made at two foothill sites of Iriomote Island, the Ryukyu Archipelago, Japan, by modified CDC miniature light traps with a frog call CD player from June 12 to 18, 2004. A total of 777 and 257 female Diptera was collected at sites 1 and 2, respectively. Among them, 4 haematophagous species were predominant at sites 1 and 2 - Uranotaenia macfarlanei with 580 (74.6%) and 193 (75.1%) individuals respectively, Ur. yaeyamana 19 (2.4%) and 27 (10.5%), and Corethrella nippon 106 (13.6%) and 20 (7.8%) which is a new record for Iriomote Island, and Mimomyia luzonensis with 39 (5.0%) individuals was predominant at site 1. The females of these species collected by the traps fed easily on a frog, Rana limnocharis exposed in the cage. The results demonstrated clearly that frog call is the primary stimulus in guiding these Culicine and Chaoborine flies in their search for host animals in nature.