Blue Milkweed Beetle. Both sexes range from 6 9 millimetres 0 24 0 35 in in length with. The red milkweed beetle tetraopes tetrophthalmus is a beetle in the family cerambycidae the binomial genus and species names are both derived from the ancient greek for four eyes as in many longhorn beetles the antennae are situated very near the eye in the red milkweed beetle this adaptation has been carried to an extreme.
The larvae of blue milkweed beetles are known to be obligate root feeders on milkweed and dogbane. Usual hosts are spp. With an iridescent cobalt blue exoskeleton and clubbed antennae this beetle in my opinion is rather pretty.
As in many longhorn beetles the antennae are situated very near the eye.
In the milkweed beetle this adaptation has. Of milkweed asclepias spp asclepiadaceae also reported from oleander. It is a close relative of and a bit shorter than the dogbane beetle and it is. The milkweed beetle is a beautiful dark cobalt blue in colour.