微小按蚊和溪流按蚊翅斑形态的比较

COMPARISON OF THE MORPHOLOGY OF WING SPOT BETWEEN ANOPHELES MINIMUS AND ANOPHELES FLUVIATILIS

目的：比较微小按蚊和溪流按蚊翅斑的形态，了解它们的变异情况，寻找可靠的鉴别特征。方法：微小按蚊采自云南省景洪县基诺乡，溪流按蚊采自广西壮族自治区凌云县。将母蚊产的卵，在实验室饲养至成蚊，再将成蚊的翅制成玻片标本，在显微镜下测量标本的翅长和部分翅斑的长度。结果：共检查微小按蚊雌蚊翅５２个，雄蚊翅６０个，溪流按蚊雌蚊翅４０个，雄蚊翅６０个。认为翅前缘脉上分脉前白斑（ＰＳＰ）的有无和分脉白斑与分脉暗斑比例（ＳＰ／ＳＤｒａｔｉｏ）的大小，是鉴别微小按蚊和溪流按蚊的重要依据。结论：无论是雌蚊还是雄蚊，微小按蚊的翅斑形态与溪流按蚊的翅斑形态均有较为明显的差异。

AIM: To compare the morphology of wing spot between Anophelesminimus Theobald, 1901 and Anopheles fluviatilis James, 1902 and find out the reliable diagnostic characteristics. METHODS: Anopheles minimus were collected from Jinuo Village, Jinghong County,Yunnan Province. Anopheles fluviatilis were collected from Lingyun County, Guangxi Zhuang Autonomous Region. Measurements of the wing length and the length of pale and dark spots on the costa and V1 were made with a microscope fitted with an ocular micrometer. RESULTS: A total of 52 females and 60 males of Anopheles minimus and 40 females and 60 males of Anopheles fluviatilis were examined. It was found that the presence of presector pale spot and the ratio of sector pale spot to sector dark spot were the important diagnostic morphological characteristics between the abovementioned two species. CONCLUSION: Obvious differentiations exist in the morphology of wing spots between Anopheles minimus and Anopheles fluviatilis.