Tipula (Yamatotipula) marginella Theowald, 1980

Men, Qiulei, Starkevich, Pavel & Podenas, Sigitas, 2020, Comparative morphological study of female internal reproductive system among nine species in the genus Tipula (Diptera: Tipulidae), Zoological Systematics 45 (2), pp. 135-145 : 141-143

Tipula (Yamatotipula) marginella Theowald, 1980 ( Fig. 9 )

Description. Bursa copulatrix sinuate and elongated, basal one fourth distinctly broad, gradually narrowed to tip. Spermatheca three, pear-shaped, width 0.25 mm, length 0.35 mm. Spermathecal ducts same length, distinctly shorter and narrower than bursa copulatrix, not arising from same level, central duct arising front of lateral ducts. Accessory gland spindle-shaped, swollen, strongly curved, connected to each other by a short stem ( Fig. 9A ). Sternite nine trapeziform, with two pairs of arms extended cephalad and caudalad respectively ( Fig. 9A ). Vaginal apodeme broad basally to form a triangular plate, and then abruptly narrowed to form a narrowed rod ( Fig. 9B ), tip sharply acute which is curved directed ventrad in lateral view ( Fig. 9C ).

Remarks. In the two species of the subgenus Tipula (Yamatotipula) , their accessory glands are generally elongated and irregular in shape, and their spermathecae are relatively big.

Figures

Figure 9. Female internal reproductive system of T. (Y.) marginella. A. Sternite nine, vaginal apodeme and internal reproductive system, dorsal view. B. Vaginal apodeme, dorsal view. C. Vaginal apodeme, lateral view. Scale bar=1.0mm.