Hycleus polymorphus

Hycleus polymorphus is a species of Blister Beetles belonging to the family Meloidae subfamily Meloinae.

Hycleus polymorphus
Hycleus polymorphus. Dorsal view
Scientific classification
Kingdom:
Animalia
Phylum:
Arthropoda
Subphylum:
Hexapoda
Class:
Insecta
Order:
Coleoptera
Family:
Meloidae
Genus:
Hycleus
Species:
H. polymorphus
Binomial name
Hycleus polymorphus
(Pallas, 1771)
Synonyms
  • Mylabris polymorpha (Pallas, 1771)
  • Attelabus polymorphus Pallas, 1771

Distribution and habitat

These beetles are present in most of Europe, in the Near East, and in the eastern Palearctic realm.[1] They occur mainly in mountainous areas.

Description
Hycleus polymorphus - female

The adults of Hycleus polymorphus grow up to 11–20 millimetres (0.43–0.79 in) long. [2] These beetles have an elongate soft body, with a long erect black hair on the pronotum and on the head. They are completely black, with yellow-orange stripes on elytra and two yellow-orange spots enclosed in the apical dark bands. They have very different colourful patterns (hence the Latin word polymorphus). Anterior and middle black bands of elytra extend to outer border and along suture.[2]

This species is very similar to Mylabris variabilis, but in the latter the apical spots are missing, while there are more or less extended black bands.

Biology

Adults can be encountered on flowers from July through August, mainly feeding on Asteraceae and Fabaceae species. [2]

The larval stage of these insects is quite complex, as they are characterized by hypermetamorphosis, a kind of complete insect metamorphosis in which, in addition to the normal stages of larva, nymph and imago, they have several others, with great differences in appearance and way of life. [3]

The female of Hycleus polymorphus lays her eggs in the soil. The first-stage larvae move to find an ootheca of grasshoppers, as these beetles are predators of Acridids eggs (Acrididae species, especially locusts), being a natural control agent. In the eggs of their victims they start a new cycle of metamorphosis. [3]

References
  1. Fauna Europaea
  2. Trek Nature
  3. Bologna M., (1991) – Fauna d'Italia, Coleoptera Meloidae. Edizioni Calderoni, Bologna
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.