Teratomyzidae

Definition

A family of small, elongate acalyptrate flies (Diptera) distributed mainly across southern continents (South America, Australasia, and associated islands), absent from Europe, North America, and Africa. Adults bear a dusty or pruinose cuticle and distinctive wing venation: costa weakened beyond the humeral crossvein, broken before vein 1 with an elongate dorsal bristle at the break, vein 1 short and joining costa within the basal quarter of the wing, and vein 6 extending beyond the discal crossvein. Larvae are specialist feeders on fern fronds.

Etymology

From Greek teratos (monster, marvel) + myza (to suck), with the family suffix -idae

Example

The genus Teratomyza, found in Chile and Australia, represents one of approximately 35 described species in Teratomyzidae, all associated with fern habitats.

Related Terms

• Aulacigastridae
• Neminidae
• Anthomyzidae
• Acalyptratae
• Phytophagy
• fern ecology
• wing venation
• southern biogeography

Usage Notes

Teratomyzidae are morphologically convergent with Anthomyzidae in body form but distinguished by unique costal and venational characters. The family is rarely encountered in general insect collections due to its specialized fern-associated ecology and restricted geographic range. Systematic placement within Opomyzoidea remains stable but the group is poorly sampled in many regions of predicted occurrence.