Male reproductive system of P. tremulae: A longitudinal section through testicles B, C, D cross sections through testicles; ag – accessory gland, cec – cuboidal epithelial cells, tf – testicular follicles, vd – vas deferens.
Part of: Nowińska A, Mróz E, Depa Ł (2017) Sexual morphs of Pterocomma tremulae Börner, 1940 (Aphididae, Aphidinae) with description of male reproductive system. ZooKeys 686: 125-136. https://doi.org/10.3897/zookeys.686.14493