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Insects described in 1850

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Calopterygidae
Calopterygidae is a family of damselflies, in the suborder Zygoptera. They are commonly known as the broad-winged damselflies, demoiselles, or jewelwings. These rather large damselflies have wingspans of 50–80 mm (compared to about 44 mm in the common bluetail damselfly, Ischnura elegans), are often metallic-coloured, and can be differentiated from other damselflies by the broader connection between the wings and the body, as opposed to the abrupt narrowing seen in other damselfly families. The family contains some 150 species.
Corduliidae
Corduliidae, also knowns as the emeralds, emerald dragonflies, or green-eyed skimmers, is a family of dragonflies. These dragonflies are usually black or dark brown with areas of metallic green or yellow, and most of them have large, emerald-green eyes. The larvae are black, hairy-looking, and usually semiaquatic. This family include species called "baskettails", "emeralds", "sundragons", "shadowdragons", and "boghaunters". They are not uncommon and are found nearly worldwide, but some individual species are quite rare. Hine's emerald dragonfly (Somatochlora hineana), for example, is an endang
Formica polyctena
species of insect
Coenagrion ornatum
species of insect
Lasius alienus
species of insect
Rambur's Forktail
species of insect
Calopterygoidea
Calopterygoidea is a superfamily of damselflies in the order Odonata.
Paragomphus lineatus
species of insect
Enallagma doubledayi
species of insect
Oenopia
genus of insects
Hudsonian Whiteface
species of dragonfly
Gomphus schneiderii
species of insect
Asphondylia
thumb|Asphondylia solidaginis, gall in goldenrod (Solidago) thumb|Asphondylia solidaginis pupa in its gall
Meimuna opalifera
species of insect
Laphria lata
species of insect
Poecilimon ornatus
species of insect
Rhabdophaga rosaria
species of insect
Megaphorus clausicellus
species of insect
Pseudomyrmex triplarinus
species of insect
Terellia plagiata
species of insect
Urophora terebrans
species of insect
Hylaeus foveatus
species of insect
Campiglossa obscuripennis
species of insect
Rondania cucullata
species of insect
Chrysops excitans
species of insect
Asphondylia sarothamni
species of insect
Geocrypta galii
species of fly
Temnothorax nylanderi
species of insect
Oxyna guttatofasciata
species of insect
Meomyia sericans
species of insect
Lasius bicornis
species of insect
Rabdophaga albipennis
species of insect
Megalonotus praetextatus
species of insect
Stenomacra marginella
species of insect
Acricotopus lucens
species of insect
Melanostoma fasciatum
species of insect
Rabdophaga terminalis
species of insect
Tabanus similis
species of insect
Glossina tabaniformis
species of insect
Glossina tachinoides
species of insect
Eurymela distincta
species of insect
Chrysops provocans
species of insect
Sylvicola dubius
species of insect
Hendrella caloptera
species of insect
Rabdophaga heterobia
species of insect
Lepinotus inquilinus
species of insect
Chrysops ater
species of insect
Dasineura plicatrix
species of insect
Tabanus conterminus
species of insect
Kikihia rosea
species of insect
Kikihia cutora
species of insect
Hybomitra hirta
species of insect
Trialeurodes abutiloneus
species of insect
Nemotelus albirostris
species of insect
Notopsalta sericea
species of insect
Calmar punctata
species of insect
Mitrodetus dentitarsis
species of insect
Kikihia angusta
species of insect
Ceuthophilus gracilipes
species of insect
Tabanus fuscopunctatus
species of insect