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''Lethocerus americanus'' is a giant water bug in the family Belostomatidae, native to southern Canada and the United States (north of 35°N; other ''Lethocerus'' species are found southwards). It typically has a length around .〔P. J. Perez-Goodwyn (2006). ''Taxonomic revision of the subfamily Lethocerinae Lauck & Menke (Heteroptera: Belostomatidae)". Stuttgarter Beiträge zur Naturkunde.'' A (Biologie) 695: 1–71.〕 It was originally classified as a species in genus ''Belostoma''.〔 == Habits == Commonly found in ponds, marshes, and on the edges of lakes and slow-moving streams, adults and larvae feed on other insects, small crustaceans (crabs/crayfish), tadpoles, snails, and small fish. The adult swims with the aid of its hind legs. A pair of front fore limbs is used for capturing and latching onto its intended prey, which it then injects with digestive toxins through a somewhat retractable proboscis much like that of a mosquito. ''L. americaus'' tends to let its prey digest for 10–15 minutes before eating. Multiple ''L. americanus'' bugs have been seen to hunt and then share the same prey animal. Under water, the adult breathes air that it traps under its wings using two snorkel-like tubes that extend from the rear of its abdomen.〔 Commonly known as "toe biter", ''L. americanus'' may deliver a painful bite if handled or disturbed. However, it prefers to avoid humans rather than engage them whenever possible. If disturbed in the water, the speed of ''L. americanus'' allows it to quickly break away while its natural camouflage easily conceals it. Even if agitated on dry land, ''L. americanus'' will first attempt to escape or play dead before raising its fore limbs and hind quarters in what resembles a fighting stance. If agitation continues, ''L. americanus'' will use its fore limbs to latch onto the source of the agitation and attempt to deliver a painful bite. Also known as the "electric-light bug", it may be attracted by electric lights while flying at night. Eggs are laid on vegetation located at the water's edge and may be guarded by an adult. The young nymphs then hatch about two weeks later.〔(The Giant Water Bug (''Lethocerus americanus'') ), Nature North〕 ''L. americanus'' makes a fascinating aquarium pet, creating little waste and preferring inherently to feed on small crustaceans and feeder shrimp rather than more valuable aquarium fare. However, when choosing to care for this insect, one must be sure that the aquarium lid is completely secure with no room for the insect to escape, as it can fly. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Lethocerus americanus」の詳細全文を読む スポンサード リンク
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