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Microdon Megalogaster
''Microdon megalogaster'', the black-bodied ant fly, is a species of syrphid fly in the family Syrphidae. It is found in north-eastern North America. The larvae have been found in the nests of '' Formica subsericea'' the black field ant, and ''Formica fusca'' the silky ant. Description ;Length ;Head: The eyes are bare and the front of the face shines metallic greenish, sometimes blackish green. The face is broad below and slightly narrows to above the middle before more strongly narrowing to the lower third of the front, which is marked by an impression. Above this, the front is considerably widened to the posterior angles of the eyes, while in the female the front is only slightly narrowed. In profile, the face is almost straight on the upper third, thence almost evenly convex and retreating to the oral margin. There is a small, squarish, polished, narrowed bare spot above the base of the antennae. On each side of the face, there is an oval, impressed orbital area on the u ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Syrphid Fly
Hover flies, also called flower flies or syrphid flies, make up the insect family Syrphidae. As their common name suggests, they are often seen hovering or nectaring at flowers; the adults of many species feed mainly on nectar and pollen, while the larvae (maggots) eat a wide range of foods. In some species, the larvae are saprotrophs, eating decaying plant and animal matter in the soil or in ponds and streams. In other species, the larvae are insectivores and prey on aphids, thrips, and other plant-sucking insects. Insects such as aphids are considered a crop pest, and therefore the aphid-eating larvae of some hover flies serve as an economically (as well as ecologically) important predator and even potential agents for use in biological control, while the adults may be pollinators. About 6,000 species in 200 genera have been described. Hover flies are common throughout the world and can be found on all continents except Antarctica. Hover flies are harmless to most mammals, t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Formica Subsericea
''Formica subsericea'', colloquially known as the black field ant, is a species of ant in the genus '' Formica''. It is found in the eastern United States and Canada. Workers of this species are incredibly fast and quite timid. Workers of this species are commonly found working as slaves in '' Polyergus'' colonies. Nuptial flights typically occur in July or August. It is often confused with another ''Formica'' species, ''Formica fusca ''Formica fusca'' is a black-colored ant commonly found throughout Europe as well as parts of Southern Asia and Africa. It has the common names silky ant or dusky ant. The range within the palaearctic region extends from Portugal in the west ...''. The larvae of Microdon megalogaster, a member of the ant fly genus, have been observed in the nests of these ants. The Inquiline relationship of these fly larvae is not well understood. References External links * subsericea Hymenoptera of North America Insects described in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Formica Fusca
''Formica fusca'' is a black-colored ant commonly found throughout Europe as well as parts of Southern Asia and Africa. It has the common names silky ant or dusky ant. The range within the palaearctic region extends from Portugal in the west to Japan in the east and from Italy in the south to Fennoscandia in the north. Populations from North America have been split off as a separate species, '' Formica subaenescens''. ''F. fusca'' nests are usually found in rotten tree stumps or under stones in clearcut areas and along woodland borders and hedgerows. Eusociality Colonies are facultatively polygynous (though weakly so); though the queens coexist amicably, contribution to the brood tends to be unequal. Nests are usually small, containing 500–2,000 workers. The workers are large, at long, and fast moving, though timid. To ensure that non-nest mate eggs are not reared, these workers will engage in a process known as worker policing. Alate (winged) forms are produced in June ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arista (insect Anatomy)
In insect anatomy the arista is a simple or variously modified apical or subapical bristle, arising from the third antennal segment. It is the evolutionary remains of antennal segments, and may sometimes show signs of segmentation. These segments are called aristameres. The arista may be bare and thin, sometime appearing no more than a simple bristle; pubescent, covered in short hairs; or plumose, covered in long hairs. The presence of an arista is a feature of the Diptera (flies) suborder Brachycera and may be especially well-developed in some species. It is also present in some members of Hemiptera (true bugs), specifically in the suborder Auchenorrhyncha. The arista is often covered in multiple kinds of sensilla A sensillum (plural ''sensilla'') is an arthropod sensory organ protruding from the cuticle of exoskeleton, or sometimes lying within or beneath it. Sensilla appear as small hairs or pegs over an individual's body. Inside each sensillum there are ..., or sens ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scutellum (insect Anatomy)
The scutellum is the posterior portion of either the mesonotum or the metanotum of an insect thorax; however, it is used almost exclusively in the former context, as the metanotum is rather reduced in most insect groups. In the Hemiptera, and some Coleoptera, the scutellum is a small triangular plate behind the pronotum The prothorax is the foremost of the three segments in the thorax of an insect, and bears the first pair of legs. Its principal sclerites (exoskeletal plates) are the pronotum ( dorsal), the prosternum ( ventral), and the propleuron ( lateral) o ... and between the forewing bases. In Diptera and Hymenoptera the scutellum is nearly always distinct, but much smaller than (and immediately posterior to) the mesoscutum. File:Heteroptera morphology-d.svg, 26 = Heteroptera scutellum File:Housefly anatomy-key.svg, 6 = Diptera scutellum File:Coléoptère schématique.jpg, 9 = Coleoptera scutellum File:Scheme ant worker anatomy-numbered.svg, 10 = Formicidae scutellu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Microdontinae
The subfamily Microdontinae contains slightly more than 400 species of hoverflies (family Syrphidae) and, while diverse, these species share several characteristics by which they differ from other syrphids. The Microdontinae are myrmecophiles, meaning they live in the nests of ants. Larval Microdontinae are scavengers or predators in ant nests, and, in contrast to other syrphid larvae, have no readily apparent body segmentation. Some species also do not exhibit the typical adult flower-visiting behaviour of other hoverflies, but instead remain near their larval host colonies (some of these species have no functional mouthparts and cannot feed as adults). A number of genera (e.g. ''Masarygus'', ''Paragodon'', ''Schizoceratomyia'' and ''Surimyia'') lack the "spurious vein" which is characteristic of all other Syrphidae. For other distinguishing characteristics, see Thompson (1969). Genera A revised list of the genera in Microdontinae was carried out by Reemer & Ståhls (2013): *'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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