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Fig. 2 | BMC Zoology

Fig. 2

From: Structure and function of the musculoskeletal ovipositor system of an ichneumonid wasp

Fig. 2

SEM images of Venturia canescens (left is anterior). a, b The apex of the terebra (a, lateral view; b, ventral view; for a transverse section see Fig. 3) showing the notch and the rhachis, which ends at the very apex of the 2nd valvula, and five sawteeth directed apically and decreasing in size apically on each of the 1st valvulae. The valvulae bear various types of sensilla with the campaniform sensilla being numerous at the apices of both the 1st and the 2nd valvulae. c Upon removal of the 1st valvulae, the rhachises at the ventral side of the 2nd valvula become visible (ventrolateral view). d The rhachises show distally directed scales/serrations. e The inner surface of the apex of the right 1st valvula shows a single valvillus and the aulax. f, g The egg canal formed by the 1st and 2nd valvifers bears a microsculpture consisting of distally oriented ctenidia (f), which become further distally replaced by spine-like subctenidial setae (g) at the apex of the terebra. The aulaces of the 1st valvulae, similar to the rhachis, show distally oriented scales. The fat arrow in a represents the direction of view of the image in b. Abbreviations: 1vv, 1st valvula; 2vv, 2nd valvula; au, Aulax; cs, Campaniform sensilla; ct, Ctenidium; no, Notch; rh, Rhachis; sc, Scales; scts, Subctenidial setae; st, Sawtooth; vlv, Valvillus

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