Minettia loewi Schiner 1864

Minettia loewi (Schiner 1864)

Living larvae cylindrical, the distal parts of Malpighian tubules expanded with typical ventral loop. Posterior pole with characteristic cylindrical tubercle.

Egg (Figs 11, 12). Length 0.60–1.73 mm. Slender, with numerous ridges, ribs not developed; Chorion smooth. Micropylar pole dorsoventrally flattened. Posterior pole with cylindrical.

First instar. Length 1.34–2.17 mm. Cephalic segment: an additional small row of scraping cirri present posteriorly to the first row of the scraping cirri. Number of cirri per row large (up to 32). Peristomal cirri in few rows. Labial lobe with shallow apical incision, smooth on inner surface.

Cephaloskeleton (Fig. 168). Length 0.27– 0.24 mm. Mouth hooks with 5–6 teeth, stalked part hyaline.

Second instar. Length 2.14–3.37 mm. Scraping cirri in 20 per row. The first thoracic segment with narrow belt of comb spines dorsally.

Cephaloskeleton (Fig. 183). Length 0.42 mm (n=1). Mouth hooks converging, two apical teeth. Epistomal sclerite shorter than broad, arched from dorsal view, posterior hyaline plate present. Subhypostomal sclerites parallel with opposite tips. Dorsal bridge trapezoid. Ventral cornua virtually straight and sclerotised along the dorsal margin. Cibarium hyaline.

Third instar was not acquired.