Stiriinae

Grote, 1882

owlet moths

Tribe Guides

4

Stiriinae is a of owlet moths (Noctuidae) comprising approximately 160 described across more than 20 . The group underwent significant taxonomic revision in 2019–2021 based on phylogenetic research, with the former tribe Stiriini elevated to subfamily status and internal classification reorganized into two tribes: Stiriini and Annaphilini. The subfamily exhibits exceptional plant specialization, with many species feeding on a single Asteraceae species.

Annaphila pustulata by no rights reserved, uploaded by Andreas Manz. Used under a CC0 license.Annaphila diva by (c) Ken-ichi Ueda, some rights reserved (CC BY), uploaded by Ken-ichi Ueda. Used under a CC-BY license.Plagiomimicus tepperi by (c) Sue Carnahan, some rights reserved (CC BY), uploaded by Sue Carnahan. Used under a CC-BY license.

Pronunciation

How to pronounce Stiriinae: //ˈstaɪəriːneɪ//

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Habitat

Deserts, grasslands, and adjacent foothills of mountain ranges; distribution centered in arid regions of Mexico and the southwestern United States.

Distribution

Nearctic region, with approximately 91% of occurring in North America; diversity concentrated in Mexican deserts and adjacent grassland .

Diet

Larvae primarily feed on seeds of Asteraceae; some lineages feed on leaves or flowers. Seed-feeding represents the feeding strategy in the .

Host Associations

  • Asteraceae - larval food plantExceptionally specialized associations; many utilize only a single species within a given region.

Life Cycle

Larvae of the nominate Stiria exhibit ontogenetic matching of plant , tracking plant through development.

Behavior

Larval plant masquerading has been documented in members of the nominate , involving phenological synchronization with host plant .

Ecological Role

Seed of Asteraceae; specialized herbivores with narrow ranges that may influence plant in arid .

Human Relevance

Vulnerable to climate change and loss due to specialized associations; taxonomic revisions in 2019–2021 altered generic assignments affecting identification resources.

Similar Taxa

  • GrotellinaeFormerly a subtribe of Stiriini, elevated to status in 2019; distinguished by phylogenetic placement separate from Stiriinae.
  • MetoponiinaeClosely related that received transferred from former Stiriini classification based on 2019–2021 phylogenetic studies.

More Details

Taxonomic History

The current classification reflects major revisions from 2019 and 2021 phylogenetic studies. The tribe Stiriini was determined to be polyphyletic, with diversity distributed across three . Stiriini was elevated to subfamily Stiriinae, Grotellina was elevated to Grotellinae, and various were transferred to Metoponiinae. Stiriinae now contains two tribes (Stiriini and Annaphilini) with no subtribes.

Conservation Concern

Many have only one known plant species, making them especially at risk due to climate change and loss.

Recent Nomenclatural Changes

2019–2021 revisions included: establishment of Tiburona ; transfer of Basilodes dysnoa to Stiria; reinstatement of Polenta as distinct from Plagiomimicus; restoration of Euedwardsia and Cyptonychia as separate genera; and elevation of Chrysoecia ranunculi f. albipuncta to status.

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Sources and further reading