Suborder Cyclorrhapha

Antennae 3-segmented, aristate. Rs 2-branched. Frontal suture absent (Aschiza) or present (Schizophora).

Division Aschiza

Without a frontal suture.

SPEAR-WINGED FLIES Family Lonchopteridae Identification: Slender, yellowish to brownish, 2-5 mm. Wings pointed at apex and without cross veins except at base.

These flies are generally found in moist shady or grassy places, and are fairly common. Larvae occur in decaying vegetation. This family is a small one. Our 4 species belong to the genus Lonchoptera.


Identification: Small to minute, usually dark-colored, with distinctive appearance and wing venation: appear humpbacked and wings have strong veins in costal area, the remaining veins being weaker and oblique. Hind femora flattened. Antennae very short, the 2 basal segments very small and 3rd segment globular and bearing a long arista (bristle).

Humpbacked flies are quite common. They occur in a variety of habitats but probably most often where there is decaying vegetation. Larvae vary in habits; some live in decaying materials or in fungi, some are parasites of other insects, and some live in the nests of ants and termites.

FLAT-FOOTED FLIES Family Platypezidae Identification: Small black or brown flies with the hind tibiae and tarsi dilated. Anal cell longer than 2nd basal cell, and pointed apically.

Platypezids are rather uncommon flies usually found in wooded areas. Adults of some species are attracted to smoke. Larvae live in fungi.

BIG-HEADED FLIES Family Pipunculidae

Identification: Head very large, hemispherical, and consisting almost entirely of eyes. Wings somewhat narrowed basally. Anal cell longf closed near wing margin.

Members of this group are small and not very common. They are usually found in meadows or along the edges of woods. Larvae are parasites of various Homoptera, chiefly leafhoppers and planthoppers.

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