Hypotrix optima

(Dyar, 1920)

Hypotrix optima is a small noctuid described by Dyar in 1920. It occurs in the southwestern United States and Mexico, with a range extending from southeastern Arizona and central New Mexico south to Mexico City. are active during a narrow mid-summer window. The has been subject to taxonomic revision, with some authorities placing it in the Eriopyga.

Pronunciation

How to pronounce Hypotrix optima: /haɪˈpɒtrɪks ˈɒptɪmə/

These audio files are automatically generated. While they are not always 100% accurate, they are a good starting point.

Identification

Distinguished from by its small size and geographic distribution in the southwestern United States and Mexico. Forewing length of 11–14 mm provides a measurable character for identification. Taxonomic placement has been revised, with some sources treating it as Eriopyga optima.

Distribution

Southeastern Arizona and central New Mexico southward to Mexico City. The range spans approximately 1,500 km from north to south across the southwestern United States and central Mexico.

Seasonality

are on wing from mid-June to mid-July, indicating a narrow seasonal activity period of approximately one month.

Similar Taxa

Hypotrix speciesOther members of the Hypotrix share similar ; precise identification requires examination of genitalia and geographic range.
Eriopyga speciesTaxonomic revision has moved some Hypotrix to Eriopyga; H. optima is treated as Eriopyga optima in some classifications.

More Details

Taxonomic uncertainty

GBIF lists this as a synonym under Eriopyga optima, while Catalogue of Life and iNaturalist maintain it as Hypotrix optima. This reflects ongoing taxonomic revision of the Hypotrix in North America.

Research history

A 2015 revision of the Hypotrix in North America described four new and a new genus, indicating active taxonomic work in this group that may affect the status of H. optima.