Bengalia | |
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Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Arthropoda |
Class: | Insecta |
Order: | Diptera |
Family: | Calliphoridae |
Subfamily: | Bengaliinae |
Genus: | Bengalia Robineau-Desvoidy, 1830 [1] |
Type species | |
Bengalia testacea Robineau-Desvoidy, 1830 | |
Species | |
>65 species, see text | |
Synonyms | |
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Bengalia is a genus of blow flies in the family Calliphoridae with one authority considering the genus to belong to a separate family Bengaliidae. [3] These bristly and, unlike the greens and blues of most calliphorids, dull coloured flies, are especially noted for their relationship to ants. Little is known of their biology and life-cycle, although adults of many species are kleptoparasitic on ants and will snatch food and pupae being carried by ants or feed on winged termites. [4] [5] [6] The apt name “Highwayman Fly” was given by an early observer of their way of robbing ants. [6] Very little is known about their breeding habits. The genus is found in the Afrotropical and oriental region with one species from Australia possibly a recent introduction.
Most of the species have a yellow or brown ground-colour, an antero-posteriorly compressed head, stout mouthparts, a projecting clypeus below the lower facial margin, and have a silent flight.
Bengalia flies are best known for their remarkable highwayman-like habit of robbing ant pupae from ants moving on ant roads. With respect to Bengalia depressa this habit is described as follows: “[The flies were] settling on blades of grass, stones, and other raised objects near the ant column. ... When any ant made a little circuit away from the main body, a fly would generally pursue it at a distance of about half an inch, but back away as soon as the ant turned towards it. ... Eventually Lamborn saw a fly stalk a minor ant carrying a pupa in its jaws. Suddenly the fly rushed forward and apparently pierced the pupa bringing the ant up with a sharp jerk. The two insects then had a tug of war with very little advantage to either side, until the ant apparently became annoyed and letting go of the pupa rushed at the fly, which escaped with the booty which it proceeded to suck. Then he saw a fly swoop down on the ant column and rise at once with a pupa and attendant ant, both of which it dropped after carrying them for about a foot. The ant, however, still held on and started to run off with its charge. The fly caught it again and this time rose three feet in the air and then dropped ant and pupa again. This time the ant left the pupa which the fly immediately seized and proceeded to suck.” [6]
The genus was reclassified into 11 new genera in 4 subfamilies by Andy Lehrer in 2005, [10] within a newly designated family, Bengaliidae. The family designation was disputed by Rognes (2006) who noted that it was equivalent to the already established tribe Bengaliini (now the subfamily Bengaliinae), and that treating it as a family would render the Calliphoridae paraphyletic. [11] Further, Rognes considered all the new genera created as junior synonyms of Bengalia. [11] Lehrer's work proposed adding 49 species to the already described 41 species and 18 of these new species were treated as invalid by Rognes. At present, major sources of Dipteran taxonomy do not recognize Lehrer's 10 new genera as valid, nor the 18 new species treated as invalid by Rognes (e.g. [12] ). [7] Additional names (of these and related flies) published by Lehrer have since been synonymized, with 120 new synonymies established in a single review in 2020. [13]
This dispute reflects that at present, there is no consensus as to the best way to subdivide the Calliphoridae, which many authorities acknowledge is not a natural group (in this case, polyphyletic); the BioSystematic Database of World Diptera, for example, states "The Calliphoridae are marked as a polyphyletic group of convenience as at the present we are unwilling to reduce the Oestridae to a subordinated group within a monophyletic Calliphoridae nor to elevate a number of other groups (Polleniidae, Helicoboscidae, and Bengaliidae) so as to properly delimit both Calliphoridae and Oestridae." Similarly, the dispute at the generic level is that some of Lehrer's genera are paraphyletic, and, additionally, that they are based largely or exclusively upon features of the male genitalia, and it is therefore impossible to identify most female specimens to subfamily, let alone genus [11] (the rejection of Lehrer's subdivisions therefore being both taxonomic and a matter of practicality). The dispute at the species level centers on the fact that Lehrer did not include or examine 24 of the 41 known species in his revision, so of the 31 species he validly described that were not immediately synonymized, many could still potentially be synonyms of these 24 excluded species. [11]
The Calliphoridae are a family of insects in the order Diptera, with almost 1,900 known species. The maggot larvae, often used as fishing bait, are known as gentles. The family is known to be polyphyletic, but much remains disputed regarding proper treatment of the constituent taxa, some of which are occasionally accorded family status.
Cluster flies are flies of the genus Pollenia in the family Polleniidae. Unlike the more familiar blow flies, such as the bluebottle genus Phormia they do not lay eggs in human food. They parasitise earthworms; the females lay their eggs near earthworm burrows, and the larvae then feed on the worms. But the biology of this group is relatively poorly known and a few have been recorded from other hosts including caterpillars and bees.
Calliphora is a genus of blow flies, also known as bottle flies, found in most parts of the world, with the highest diversity in Australia. The most widespread species in North America area Calliphora livida, C. vicina, and C. vomitoria.
Stomorhina is a genus of flies in the family Rhiniidae.
Sarcophaga is a genus of true flies and the type genus of the flesh-fly family (Sarcophagidae). The members of this cosmopolitan genus are frequently known as common flesh flies.
The Calliphorinae are a subfamily of the blow fly family Calliphoridae. The distinguishing characteristics of this subfamily are: the stem vein is bare, the lower calypter and the proepisternal depression are bristly, but the suprasquamal region is bare or with only a few random bristles. The thorax is dull and bears fine hairs, and the abdomen is usually colored shining blue.
The Melanomyinae are a subfamily of Calliphoridae, or blow flies. According to Whitworth, the most distinguishing characteristic of this subfamily is its dull color; however, the biology is poorly known.
The Bengaliinae are a subfamily of Calliphoridae, or blow flies.
Cordylobia is a genus of flies from the family Calliphoridae. The larvae of Cordylobia are parasitic on mammals, especially rodents. Two species, C. anthropophaga and C. rodhaini, also are known as parasites of humans. The adult flies feed on rotting fruits, vegetables, and animal faeces, and are most abundant in the wet season. Like many tropical insects, they are most active in the morning and evening. Cordylobia species are largely confined to Africa, though they have been recorded elsewhere when transported by human travellers.
Melinda is a genus of flies in the family Calliphoridae. In general little is known of their biology. A few species have been reared from snails. One – Melinda gentilis – is parasitic in the snails Helicella virgata and Goniodiseus rotundata and Melinda itoi is a parasite of the snail Acusta despecta sieboldiana.
Actia is a genus of large flies in the family Tachinidae.
Tachininae is a subfamily of flies in the family Tachinidae.
Booponus is a genus of blow flies in the family Calliphoridae. Most species are endoparasites of large mammals.
Andy Z. Lehrer was a Romanian entomologist. From 1996 until his death, he worked as a research associate in the laboratory of Zoology at the University of Tel Aviv in Tel Aviv, Israel. For several years, he studied flesh flies and blow flies from all over the world.
Verticia is a genus of flies (Diptera) in the family Calliphoridae. The genus was first described by J.R. Malloch in 1927.
Cosmina is a genus of flies in the family Rhiniidae.
Polleniidae is a family of flies in the order Diptera. There are at least 6 genera and more than 190 described species placed definitively in Polleniidae, and other genera whose placement here is considered uncertain. The largest genus is Pollenia, with close to 190 species of flies commonly called "cluster flies".
Rhiniidae is a family of flies in the order Diptera, and formerly included in the Calliphoridae. There are around 30 genera and 370 described species in Rhiniidae.
Morinia is a genus of flies in the family Polleniidae.
Dexopollenia is a genus of flies in the family Polleniidae.