Fig. 4 in Xenos vesparum (Strepsiptera: Xenidae)-A New Insect Model and Its Endoparasitic Secondary Larva

Fig. 4. Late male secondary larva of X. vesparum, histological cross sections, cephalothorax. A. Head on the level of the antennal anlagen; B. Head on the level of the brain; C. Posterior prothorax; D. Posterior mesothorax; E. Transition area from meso- to metathorax. ana*: antennal anlage; cer: brain; circ: circumoesophageal connectives; dv: dorsal vessel; ep: epidermis; fb: fat body; fg: foregut; fl*: anlage of foreleg; haa*: anlage of haltere; lg: lamina ganglionaris; lob: lobula; med: medulla; mg: midgut; ml*: anlage of middle leg; mx*: maxillary anlage; nel: leg nerve; pgc: postcerebral ganglionic complex; ret: retinula; sp*: spiracular anlage; tran: anastomosis of the tracheal system; wia*: wing anlage. For designations of muscles see sections Mandibles, Prothorax, Mesothorax, Metathorax, DigestiveTract,Tracheal System.