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Corydalus cornutus
The large sickle-shaped crossed mandibles of the male (1) are much larger than those of the female (2). They are about three times the length of its head, reaching more than 2.5 cm long.
Photo: Insectarium de Montréal (Chris D)

The large sickle-shaped crossed mandibles of the male (1) are much larger than those of the female (2). They are about three times the length of its head, reaching more than 2.5 cm long.
Photo: Insectarium de Montréal (Jacques de Tonnancour)

The larva has a dark, elongated and segmented body. It can measure a little more than 8 cm. It has three pairs of legs, lateral tectile filaments, tracheal gills and, at the pip of the abdomen, a pair of prolegs. Each of these prolegs has a pair of terminal hooks that allow it to anchor itself in swft currents. The larvae live near the bottom, under rocks or attached to stones and other supports.
Photo: Insectarium de Montréal (Gilles Viens)
