Eriocottidae or Old World spiny-winged mothshttp://tolweb.org/Eriocottidae is a family

Family (biology)

In biological classification, family is* a taxonomic rank. Other well-known ranks are life, domain, kingdom, phylum, class, order, genus, and species, with family fitting between order and genus. As for the other well-known ranks, there is the option of an immediately lower rank, indicated by the...

 of insect

Insect

Insects are a class of living creatures within the arthropods that have a chitinous exoskeleton, a three-part body , three pairs of jointed legs, compound eyes, and two antennae...

s in the Lepidoptera

Lepidoptera

Lepidoptera is a large order of insects that includes moths and butterflies . It is one of the most widespread and widely recognizable insect orders in the world, encompassing moths and the three superfamilies of butterflies, skipper butterflies, and moth-butterflies...

 order whose position relative to other members of the superfamily Tineoidea

Tineoidea

Tineoidea is the superfamily of moths that includes clothes moths, bagworms and relatives. There are six families usually included within it, Eriocottidae, Arrhenophanidae, Lypusidae, Acrolophidae, Tineidae and Psychidae, whose relationships are currently uncertain.The Lypusidae, for example, might...

 is currently unknown. There are between eighthttp://species.wikimedia.org/wiki/Eriocottidae and seventeen (Natural History Museum Lepidoptera genus database) genera currently placed within it and two subfamilies, Compsocteninae and Eriocottinae.