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The Insects Portal
Insects (from Latin insectum) are hexapod invertebrates of the class Insecta. They are the largest group within the arthropod phylum. Insects have a chitinous exoskeleton, a three-part body (head, thorax and abdomen), three pairs of jointed legs, compound eyes, and a pair of antennae. Insects are the most diverse group of animals, with more than a million described species; they represent more than half of all animal species. (Full article...)
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Thopha saccata, the double drummer, is the largest Australian species of cicada and reputedly the loudest insect in the world. Documented by the Danish zoologist Johan Christian Fabricius in 1803, it was the first described and named cicada native to Australia. Its common name comes from the large dark red-brown sac-like pockets that the adult male has on each side of its abdomen—the "double drums"—that are used to amplify the sound it produces.
Broad-headed compared with other cicadas, the double drummer is mostly brown with a black pattern across the back of its thorax, and has red-brown and black underparts. The sexes are similar in appearance, though the female lacks the male's tymbals and sac-like covers. Found in sclerophyll forest in Queensland and New South Wales, adult double drummers generally perch high in the branches of large eucalypts. They emerge from the ground where they have spent several years as nymphs from November until March, and live for another four to five weeks. They appear in great numbers in some years, yet are absent in others. (Full article...)Did you know -
- ... that the only fossil of the extinct moth Baltimartyria sat on a paleoentomologist's desk for a number of years before being described in 2011?
- ... that the extinct wasps Dryinus grimaldii and Dryinus rasnitsyni are distinguishable by the modified claws on their front legs?
- ... that the extinct planthopper Ordralfabetix is named for a character from The Adventures of Asterix?
- ... that the rove beetle Diochus electrus is the first definite member of the subfamily Staphylininae from the fossil record?
- ... that the horse fly Scaptia beyonceae was named after singer and actress Beyoncé Knowles because of its striking golden behind?
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Mayflies (subimago of Rhithrogena germanica pictured) comprise around 2,500 species of insects which belong to the Order Ephemeroptera. They are aquatic insects whose immature stage usually lasts one year in fresh water, while the adults are short-lived, surviving from a few minutes to a few days.
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