Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
Clickable Guide
Moths Butterflies Flies Caterpillars Flies Dragonflies Flies Mantids Cockroaches Bees and Wasps Walkingsticks Earwigs Ants Termites Hoppers and Kin Hoppers and Kin Beetles True Bugs Fleas Grasshoppers and Kin Ticks Spiders Scorpions Centipedes Millipedes

Calendar
Upcoming Events

National Moth Week photos of insects and people. Here's how to add your images.

Photos of insects and people from the 2019 BugGuide Gathering in Louisiana, July 25-27

Discussion, insects and people from the 2018 gathering in Virginia, July 27-29

Photos of insects and people from the 2015 gathering in Wisconsin, July 10-12

Photos of insects and people from the 2014 gathering in Virginia, June 4-7.

Photos of insects and people from the 2013 gathering in Arizona, July 25-28

Photos of insects and people from the 2012 gathering in Alabama

Photos of insects and people from the 2011 gathering in Iowa


TaxonomyBrowse
Info
ImagesLinksBooksData

larvarum or mella

Fly - Exorista - female Fly - Exorista Fly - Exorista Tachinidae --? - Exorista - female Tachinidae --? - Exorista tachnid fly? - Exorista - female Tachnid? - Exorista Parasitic Flies Genus Exorista larvarum or mella - Exorista
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Diptera (Flies)
No Taxon (Calyptratae)
Superfamily Oestroidea
Family Tachinidae (Parasitic Flies)
Subfamily Exoristinae
Tribe Exoristini
Genus Exorista
No Taxon larvarum or mella
Remarks
The native species Exorista mella and the introduced Exorista larvarum are very similar. These species have 4 postsutural dorsocentral bristles. Other species of Exorista in North America have 3. These species have no discal bristles on abdominal segments 3 and 4; some other species do.

Exorista larvarum is an important parasite of the Gypsy Moth (Lymantria dispar). E. mella larvae are unable to penetrate the caterpillar's skin.