Idana
Loew, 1873
Species Guides
1Idana is a of picture-winged flies in the Ulidiidae. The sole described , Idana marginata, is among the largest ulidiid flies in eastern North America, reaching 10–12 mm in length. The genus was established by Loew in 1873.
Pronunciation
How to pronounce Idana: /aɪˈdeɪ.nə/
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Identification
Idana marginata can be distinguished from other eastern North American Ulidiidae by its large size (10–12 mm, exceeding the 3–12 mm range typical for the ). It may be mistaken for fruit flies (Tephritidae) or other dipterans due to its size, but belongs to Ulidiidae based on family-level characters.
Habitat
have been observed at fresh bird droppings and at fermenting sap oozing from wounds in trees. The is not uncommon in the northeast quarter of the United States.
Distribution
United States (northeastern quarter) and Canada.
Diet
Larvae develop in compost. feed at fresh bird droppings and fermenting tree sap.
Life Cycle
Larval development occurs in compost.
Behavior
are attracted to fresh bird droppings and fermenting sap on wounded trees.
Ecological Role
Larvae contribute to decomposition in compost . may facilitate nutrient cycling through their association with droppings and decaying plant matter.
Human Relevance
Not considered a pest. may be encountered in natural settings by observers seeking picture-winged flies.
Similar Taxa
- Tephritidae (fruit flies)Similar in size and general appearance; distinguished by -level morphological characters and .
- Other UlidiidaeMost are smaller (3–10 mm); Idana marginata exceeds typical size range at 10–12 mm.
More Details
Taxonomic status
Idana is , containing only the Idana marginata.