O. Merkl szerk.: Folia Entomologica Hungarica 68. (Budapest, 2007)

Larva - The larva hatches from the rounded (widened) end of the egg. The first larval stage (Li) has developed legs, and is able to move quickly. The head capsule is strongly sclerotised (Figs 8-10), the mandibles are developed and strong, the prothoracic plate (Fig. 11) is pigmented, median arms with two teeth, posterior arm with 7-9 teeth. The prothoracic plate is similar to those of several species of Acanthoscelides SCHILSKY, 1805 depicted by PFAFFENBERG & JOHNSON (1976), but the strong and wide dentation of the a posterior arm is similar to that oi Amblycerus acapulcensis KlNGSOLVER, 1975. The body has 0.10-0.17 mm long hairs, and a spine is present at the first third of both lateral sides of the body. The colour is white to pale yellow. The meso- and metathoracic segments are weakly sclerotized. One Lj larva was measured; the length of head capsule was 0.20 mm, the maximum width was 0.20 mm, the width between outer edge of the eyes was 0.14 mm. The width of the anterior edge of the prothoracic plate was 0.13 mm, that of the posterior edge was 0.10 mm. The entrance hole made by the larva was 0.20 mm. The length of one L4 larva was 6.00 mm. Pupa - The mature pupa is yellow, with ventral side of thorax and the first abdominal ventrite nearly black (Fig. 12). Figs 1-9. Megabruchidius tonkineus (Pic, 1904): 1 = scutellum, 2 = prosternai process, 3 = female genitalia, 4 = spermatheca, 5 = egg, dorsal view, 6 = egg, lateral view, 7 - egg with hatching hole, 8 = L

t larva, head, dorsal view, 9 = larva, anterior part of head, dorsal view. Not to scale