Fig. 3 in From four- to three-segmented labium in Reduviidae (Hemiptera: Heteroptera)

Fig. 3. Histological sections showing internal head structures and muscles of Rhynocoris erythropus (Linnaeus, 1767), fifth-instar larva. The sections progress from the anterior tip of the head (A) to the level of the antennifers (F); the exact location of sections A, D, F is also shown in Fig. 2C.