Figure 1.

(A) General organization of the male genital apparatus of Halyomorpha halys. It is possible to observe the testes (T), the vasa deferentia (d) and the accessory glands (ag). (B) Mature sperm of different sizes: long sperm (ls), medium-size sperm (ms) and short sperm (ss). (C) Almost mature spermatids of H. halys observed with fluorescence microscopy after treatment with γ-tubulin. Note the nucleus (N) in blue, and fluorescent red dots corresponding to the centrioles at the posterior end of the nuclear material (arrowheads).