《Table2. Morphological com parisons of fem ale internal reproductive system s.》

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《Comparative morphological study of reproductive system between Tipulidae and Limoniidae(Diptera: Tipuloidea)》

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Internal reproductive system.Consisting of a bursa copulatrix（Figs 18，21），a pair of accessory glands（Figs 18，21），three spermathecae with respective spermatheca duct（Figs 18，21），a pair of ovaries ending to a common oviduct（Fig.18），and vaginal apodeme（Fig.19）.Bursa copulatrix relatively elongated，thick，rounded apically（Figs 18，21）.Accessory gland spherical，swollen，each with a short stem which connected to a swollen base（Figs 18，21）.Spermatheca oblong，two layers with a thin follicle wall，the inner part very dark in coloration（Figs 18，21）.Spermatheca duct slender and flexible，arising from the near end of bursa copulatrix and leading to the spermatheca and with a tubule throughout the whole duct.The spermatheca ducts attach separately to the bursa copulatrix，but in close proximity（Fig.21）.Vaginal apodeme bilobed basally，gradually narrowed to a very slender apex（Fig.19）.Female internal reproductive system with two openings，the copulatory opening on the ventral side of sternite nine，the gonopore on the base of hypovalva（Fig.18）.Egg elliptical（Fig.22）.