Fig. 17. Late female secondary larva X. vesparum, histological cross sections. A in Xenos vesparum (Strepsiptera: Xenidae)-A New Insect Model and Its Endoparasitic Secondary Larva

Fig. 17. Late female secondary larva X. vesparum, histological cross sections. A. Anterior region of head; B. Head on level of brain; C. Posterior region of head on the level of the circumesophageal connectives; D. Cephalothorax on the level of the spiracles; E. Anterior region of abdominal segment I; F. Anterior region of abdominal segment II; G. Posterior section of abdominal double segment IX+X. abn: abdominal nerve; bo*: anlage of the birth organs; cer: brain; circ: circumoesophageal connectives; dv: dorsal vessel; ep: epidermis; fb: fat body; fg: foregut; mg: midgut; nea: antennal nerve; neo: optic nerve; ng: Nassonow′s glands; oc: oocytes; ol: optic lobes; pgc: postcerebral ganglionic complex; sp*: anlage of the spiracles; tran: anastomosis of the tracheal system. For designations of muscles see sections Cephalothorax, Mandibles, Abdomen, DigestiveTract.