Figure 1 in Morphology of the male reproductive tract in the water scavenger beetle Tropisternus collaris Fabricius, 1775 (Coleoptera: Hydrophilidae)

Figure 1 Anatomy of the male reproductive tract of T. collaris. (A) Photograph of the anatomy of the male reproductive tract showing the testes (T), vasa deferentia (dd), seminal vesicles (sv), tubular accessory glands (ag), bean-shaped accessory glands (pg), and ejaculatory duct (ej). (B) Schematic drawing of the reproductive tract showing the position and direction of histological sections presented in Figures 2–5. Bars: 0.4 cm.