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Belgica antarctica is a species of flightless midgeendemic to the continent of Antarctica. At 12 mm long, it is the largest purely terrestrial animal on the continent. Its flightlessness may be an adaptation to prevent wind from blowing it into inhospitable sites. For other uses, see Scientific classification (disambiguation). ... Animalia redirects here. ... Subphyla and Classes Subphylum Trilobitomorpha Trilobita - trilobites (extinct) Subphylum Chelicerata Arachnida - spiders,scorpions, etc. ... Orders See taxonomy Insects are invertebrates that are taxonomically referred to as the class Insecta. ... Suborders Nematocera Brachycera Dance fly male Empis tesselata The flesh fly, Sarcophaga carnaria Close-up of the head of a blow-fly. ... Chironomidae are a family of Nematoceran Diptera closely related to the Ceratopogonidae, Simuliidae, and Thaumaleidae. ... In biology, binomial nomenclature is the formal method of naming species. ... Image File history File links Circle-question. ... Midges on a car Midges are small, two-winged flying insects. ... Endemic, in a broad sense, can mean belonging or native to, characteristic of, or prevalent in a particular geography, race, field, area, or environment; Native to an area or scope. ... A millimetre (American spelling: millimeter, symbol mm) is an SI unit of length that is equal to one thousandth of a metre. ... Animal environments are classified as either aquatic (water), terrestrial (land), or amphibious (water and land). ... A biological adaptation is an anatomical structure, physiological process or behavioral trait of an organism that has evolved over a period of time by the process of natural selection such that it increases the expected long-term reproductive success of the organism. ...