Description
Cowpea Weevil Colony (Callosobruchus maculatus) Fabricius
They are ideal for tiny lizards, amphibians and invertebrates such a spiders or baby preying mantids.
Description: Adult weevils are 1/8-inch long, reddish-brown slightly elongate beetles compared to the typical rounded appearance of other members of this family (bruchids). Although weevil-like they are not true weevils (Curculionidae) and do not have heads prolonged into a long “snout.” Wing covers (elytra) are marked with black and gray and there are two black spots near the middle (Note: Ebeling says 2 red spots on elytra!). The elytra are short, leaving the last segment of the abdomen exposed. This last abdominal segment also has two black spots visible. The larva is whitish and somewhat C-shaped with a small head.
Habitat and Food Source(s): Mouthparts are for chewing. They prefer dried cowpeas but will attack other beans and peas in storage. Adults move about readily and can infest seeds in the field, but can also breed continuously in stored dry cowpeas. Larvae typically develop inside the dried peas. Larvae chew near the surface and leave a thin covering uneaten which appears as a window. Later the adult emerges from the “window.”
They are ideal for small lizards, amphibians and invertebrates such a spiders or baby preying mantids. They do not possess biting mouthparts and are completely non aggressive. Bean Weevils are supplied as a culture containing adult beetles, along with beans containing feeding larvae. They should be stored at 20-25oC in the containers they arrive in and will produce weevils for several weeks, if not months.
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