What is the desert blister beetle?
Lytta magister is a species of the Lytta genus.
also known as desert blister beetle, or master blister beetle. (1)

What does it look like?
(see pic here)
has red head, legs, and prothorax with black elytra(1)

Where is it located?
in great numbers in the Mojvae desert, Colorado desert (1)

When are they seen?
in spring, and are often seen in swarms (1)

Females lay eggs in holes in the desert soil. (1)

What do they eat?
Adults feed on flowers and leaves of brittlebush. (1)

Does it bite?
Though they are not venomous, they can in fact bite. (1)

Resources
1. https://en.wikipedia.org/wiki/Lytta_magister

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