Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada

Family Tridentaformidae

Unknown moth - Tridentaforma fuscoleuca Unknown Moth! - Tridentaforma Moth - Tridentaforma fuscoleuca Moth - Tridentaforma fuscoleuca Clothes Moth - Tridentaforma Moth - Tridentaforma Pyramidobela Moth - Tridentaforma Tridentaforma
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Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Lepidoptera (Butterflies and Moths)
Superfamily Adeloidea (Fairy Moths and kin)
Family Tridentaformidae
Synonyms and other taxonomic changes
Tridentaformidae Davis, 2015
Erected as a full family by Regier et al. (2015) (1), Tridentaforma was previously placed in Incurvariidae (Davis, 1978b (2)) and Prodoxidae (Nielsen & Davis, 1985 (3)).
One species in one genus in our area (2) (3) (4).
Western North America (1)
"The family relationships of Tridentaforma have long been recognized as problematic (Davis, 1998) ... Morphologically, the genus shares important features with the Adelidae (basally scaled haustellum), Incurvariidae (male valva with rows of broad spines), and the prodoxid genus Lampronia (metafurcal apophyses free, lateral cervical sclerites without lateral process). Earlier molecular studies, using mitochondrial DNA (Brown et al., 1994), 18S rDNA (Wiegmann, 1994) and dopa decarboxylase (Friedlander et al., 2000), agreed in excluding Tridentaforma from Prodoxidae, but disagreed on where it should go instead. ... the present molecular data firmly exclude Tridentaforma from all other families. The molecular analysis also helps to explain the patchwork of characters shared variously between Tridentaforma and Prodoxidae, Incurvariidae and Adelidae, by showing that it is closely related to all three: it is the sister group to Incurvariidae+Adelidae+Heliozelidae, and these plus Tridentaforma are sister group to Prodoxidae" (1).
Works Cited
1.A Molecular Phylogeny for the Oldest (nonditrysian) Lineages of Extant Lepidoptera
Regier et al. 2015. Systematic Entomology.
2.Two new genera of North American Incurvariine (Lepidoptera: Incurvariidae)
Donald R. Davis. 1978. The Pan-Pacific Entomologist 54: 147-153.
3.The first southern hemisphere prodoxid and the phylogeny of the Incurvarioidea (Lepidoptera)
E.S., Nielsen; D.R., Davis. 1985. Systematic Entomology 10(3): 307–322.
4.Annotated taxonomic checklist of the Lepidoptera of North America, North of Mexico
Pohl, G.R., Patterson, B., & Pelham, J.P. 2016.