bristle fly
(Leskia similis)
| Conservation Status | IUCN Red List |
not listed |
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NatureServe |
not listed |
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Minnesota |
not listed |
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| Occurrence | Uncommon |
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| Photo by Alfredo Colon | |||||||
| Identification | There are 41 species of Leskia worldwide. There are 3 species in North America north of Mexico, one in the west, two in the east. Only Leskia similis occurs in Minnesota. Leskia similis is an uncommon, small, yellow, bristle fly. The face is convex when viewed from the side, at least on the lower half. The eyes are bare, not covered with hairs (setae). The front plate on the underside of the thorax (prosternum) is bare, having no setae. The small plate between the thorax and abdomen (scutellum) has two pairs of long bristles, the forward pair (nearest the head) convergent, the rear pair divergent. The abdomen is no more than two times as long as wide. It is broadly connected to the thorax, not constricted at the base. The wings are clear. The small membranous lobe at the base of the forewing that covers the haltere (calypter) is well developed. The fourth segment (tibia) on the middle leg has just one bristle on the upperside before the tip (anterodorsal). |
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| Distribution |  |
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| Taxonomy | Order: |
Diptera (gnats, mosquitoes, true flies) |
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Suborder: |
Brachycera (circular-seamed flies, mouches muscoïdes, muscoid flies, short-horned flies) |
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Infraorder: |
Muscomorpha |
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No Rank: |
Eremoneura |
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No Rank: |
Cyclorrhapha |
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No Rank: |
Schizophora |
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No Rank: |
Calyptratae |
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Superfamily: |
Oestroidea |
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Family: |
Tachinidae (tachinid flies, bristle flies) |
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Subfamily: |
Tachininae |
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Tribe: |
Leskiini |
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Genus: |
Leskia |
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| Synonyms | Myobiopsis similis Stomoxys pallida |
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| Common Names |
This species has no common name. One common name for the family Tachinidae is bristle flies, and is applied here for convenience. |
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Glossary
Calypter
On flies: one of two small membranous lobes at the base of the forewing that covers the haltere. On mosses: A thin cap that covers and protects the capsule and operculum and drops off at maturity.
Halteres
In flies: a pair of knob-like structures on the thorax representing hind wings that are used for balance.
Scutellum
The exoskeletal plate covering the rearward (posterior) part of the middle segment of the thorax in some insects. In Coleoptera, Hemiptera, and Homoptera, the dorsal, often triangular plate behind the pronotum and between the bases of the front wings. In Diptera, the exoskeletal plate between the abdomen and the thorax.
Seta
A stiff, hair-like process on the outer surface of an organism. In Lepidoptera: A usually rigid bristle- or hair-like outgrowth used to sense touch. In mosses:The stalk supporting a spore-bearing capsule and supplying it with nutrients. Plural: setae.
Tibia
The fourth segment of an insect leg, after the femur and before the tarsus (foot). The fifth segment of a spider leg or palp.
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| Alfredo Colon | |||
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| Alfredo Colon 8/27/2019 |
Location: Woodbury, Minnesota |
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| Alfredo Colon 8/8/2019 |
Location: Woodbury, MN |
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Created: 2/11/2020
Last Updated: