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Disteniidae

Disteniidae
Distenia.JPG
Distenia gracilis Blessig, 1872
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Coleoptera
Suborder: Polyphaga
Superfamily: Chrysomeloidea
Family: Disteniidae
Thomson, 1860
Subfamilies

The Disteniidae are a small family of beetles in the superfamily Chrysomeloidea, traditionally treated as a group within the Cerambycidae (most resembling certain Lepturinae such as the genus Stenocorus, but having long fine antennae and sometimes metallic colours).

The adults have a lepturoid aspect, having like those (except for a small number of cases) a divided stridulatory area. Nevertheless, the head is extremely short, the mandibles are strongly bowed and the anterior coxae are globular. The antennae are long, nearly filiform in most of the genera, and bearing very long setae in the Malagasy genus Nethinius.

The major differences are in the larval morphology, because they have the prosternal skin attached to the base of the submentum, rather than with the gula such as all other Cerambycidae. For nearly all other aspects, they are very similar to the larvae of Lepturinae.

This family, original from Gondwana, includes more than 300 species, widespread in all regions of the Southern Hemisphere, while much less common in the Northern Hemisphere. In particular, only a few species occur in North America and none are present in Europe. In contrast, Madagascar is extremely rich in species, especially of the endemic genus Nethinius.


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