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Crickets are mainly nocturnal, and are best known for the loud, persistent, chirping song of males trying to attract females, although some species are mute. The singing species have good hearing, via the tympana on the tibiae of the front legs. Crickets often appear as characters in literature.
Spinochordodes tellinii is a parasitic nematomorph hairworm whose larvae develop in grasshoppers and crickets. This parasite is able to influence its host's behavior : once the parasite is grown, it causes its grasshopper host to jump into water, where the grasshopper will likely drown.
Paragordius tricuspidatus is a species of parasitic worm that affects the cricket Nemobius sylvestris.In its larval stage, the worm is microscopic, but grows into a large worm (10–15 cm or 3.9–5.9 in) inside its host after accidental ingestion since their eggs are laid at the edge of the water by rivers where crickets frequently reside. [2]
Ormia ochracea is a small yellow nocturnal fly in the family Tachinidae. [2] It is notable for its parasitism of crickets and its exceptionally acute directional hearing. The female is attracted to the song of the male cricket and deposits larvae on or around him, as was discovered in 1975 by the zoologist William H. Cade.
Gordius robustus, a species of horsehair worm, is a parasite of the Mormon cricket, [11] as is Ooencyrtus anabrivorus. [12] The most common chemical control method used is carbaryl (typically sold as "Sevin Dust") bait. This bait kills both the Mormon crickets that eat the bait and the crickets that eat crickets that have eaten the bait.
Like most cricket species, Teleogryllus oceanicus males produce a calling song to attract potential female mates. Crickets produce the sound of their calls using a "file-scraper" system where, as the male opens and closes its wings, a plectrum (scraper) located on the posterior side of the left wing is rubbed against a filed vein located on the right wing. [5]
The house cricket is typically gray or brownish in color, growing to 16–21 millimetres (0.63–0.83 in) in length. Males and females look similar, but females will have a brown-black, needle-like ovipositor extending from the center rear, approximately the same length as the cerci, the paired appendages towards the rear-most segment of the cricket.
Cricket paralysis virus (CrPV) is a paralytic disease affecting crickets. It was initially discovered in Australian field crickets ( Teleogryllus commodus and Teleogryllus oceanicus ) by Carl Reinganum and his colleagues at the Victorian Plant Research Institute ( Burnley , Melbourne , Australia ).