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Pyrearinus

Genus of beetles From Wikipedia, the free encyclopedia

Pyrearinus
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Pyrearinus is a genus of click beetle (family Elateridae).

Wikispecies has information related to Pyrearinus.

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As one of the members of the tribe Pyrophorini, all species of this genus have luminous organs on their abdomen;[2] among them, larvae of Pyrearinus termitilluminans [pt; species] (described from Emas National Park, Brazil) are responsible for so-called "luminous termite hill" known to human beings at least since 1850.[3][4]

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Description

Size variable (from 7 to 26 mm). Brownish or black; some species have a bicolorous prothorax (lateral margins yellowish or reddish and discal region darker). Pubescence dense, short and yellowish or not so dense and apparently absent. Eyes little prominent in males. Antennae short, serrate from the fourth segment onwards; second small, third a little longer, elongate and almost of the same length as the fourth. Prothorax more or less convex. Luminous spots flat or slightly convex, localized posteriorly; in species with bicolorous prothorax the spots are confused with the color of the integument. Punctures variable. Mesosternal cavity sinusoidal. Metacoxal plates tapering outwardly. Abdominal luminous organ small, sometimes indistinct. Male genitalia extremely homogeneous; median lobe tapering to apex; lateral lobe short. Female genitalia, bursa copulatrix more or less spiraled with a variable number of long spines; median oviduct with sclerotized plates. Sexual dimorphism more or less accentuated, males with eyes larger than the females, and with longer antennae; in one species group (nyctolampis) the females have hind wings little shorter than usual.[1]

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List of species

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Larvae of Pyrearinus termitilluminans glowing on termite hills in Goiás, Brazil.

The following list is based upon Costa (1978) unless otherwise noted.

Synonyms

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References

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