Lacturidae

Heppner, 1995

Tropical Burnet Moths

Genus Guides

Enaemia

, commonly called Tropical Burnet Moths, is a pantropical of in the superfamily Zygaenoidea. The family was established by Heppner in 1995, having been previously classified in Plutellidae, Yponomeutidae, or Hyponomeutidae. North American have been taxonomically revised, with six species documented. The family is characterized by bright coloration and a specialized defense mechanism in larvae.

Enaemia pupula by (c) Morgan Hay, some rights reserved (CC BY), uploaded by Morgan Hay. Used under a CC-BY license.

Enaemia subfervens by (c) Annika Lindqvist, some rights reserved (CC BY), uploaded by Annika Lindqvist. Used under a CC-BY license.

Pronunciation

How to pronounce Lacturidae: /lækˈtjʊrəˌdiː/

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Identification

can be distinguished from similar by their placement in Zygaenoidea and their bright coloration. Larvae possess subspiracular glands that evert as transparent, balloon-like vesicles when threatened—a feature not found in superficially similar Plutellidae or Yponomeutidae. have androconial hairpencils for loading. Historic taxonomic confusion with related families has been resolved through phylogenetic analysis of nuclear and mitochondrial markers.

Images

Habitat

Tropical and subtropical regions. In North America, found in southeastern United States and Texas, including salt marsh edges in coastal Georgia and Florida.

Distribution

Pantropical distribution. North America north of Mexico: widespread in the southeast with -specific ranges including southern Hill Country of central Texas and Rio Grande Valley.

Diet

Larvae feed on Sideroxylon (Sapotaceae). Documented : Sideroxylon celestrinum.

Host Associations

Sideroxylon - larval plant in Sapotaceae; primary for North American
Sideroxylon celestrinum - larval plantSpecific documented for Lactura nalli

Life Cycle

Females deposit clusters near leaf petioles. Larval development includes multiple instars with six distinct phenotypes documented in North American . Cocoons are formed for . Rearing records document complete development from egg to .

Behavior

Larvae exhibit a distinctive defense : when threatened, they evert subspiracular glands as transparent, balloon-like vesicles that secrete a sticky, mucilaginous fluid. rest with wings folded and possess androconial hairpencils used for loading.

Ecological Role

herbivore on Sapotaceae, particularly the Sideroxylon. Functions as a folivore in tropical and subtropical forest .

Similar Taxa

PlutellidaePreviously placed in this ; distinguished by larval subspiracular gland defense and androconial structures
YponomeutidaePreviously placed in this ; distinguished by phylogenetic placement in Zygaenoidea and larval defense
HyponomeutidaePreviously placed in this ; now separated based on molecular and morphological characters

Misconceptions

Historic taxonomic confusion across North American was caused by phenotypic variation in Lactura subfervens, which was mistakenly described as multiple species. This has been resolved through phylogenetic analysis revealing that much of the variation traced to a single polymorphic species.

More Details

Taxonomic history

The has undergone repeated reclassification, previously assigned to Plutellidae, Yponomeutidae, Zygaenidae, and Hyponomeutidae before recognition as a distinct family in Zygaenoidea.

Phylogenetic basis

placement and boundaries confirmed using seven nuclear and two mitochondrial CO1 loci, with larval phenotypes and data supporting six distinct species in North America.