Snow's Owlet - Hodges#8497

Isogona snowi

This record describes Isogona snowi (species). Recorded family: Erebidae. Recorded order: Lepidoptera.

Identification and Appearance

Snow's Owlet - Hodges#8497 - Isogona snowi — Contributed by Robin McLeod; Additional contributions by Maury Heiman

Adult: forewing light brown with sparse dark speckling and V-shaped AM, median, and PM lines; lower portion of PM line irregular or zigzagged; two pale spots in center of median area; slightly darker wedge-shaped area extends from median spots to outer margin; inner margin bulges outward near anal angle; hindwing white basally, shading to pale yellowish-brown distally Larva: body bright green to bluish-green; prominent subdorsal stripe continues forward to eyes; fourth abdominal segment greatly reduced Determined by Ed Knudson (Texas Lepidoptera Survey).

Classification

Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Lepidoptera (Butterflies and Moths)
Superfamily: Noctuoidea
Family: Erebidae
Subfamily: Boletobiinae
Tribe: Phytometrini
Genus: Isogona

Imported taxonomy record. Source availability varies; see the source references and editorial policy below.

Habitat and Range

Geographic Range

Southern Texas and Mexico. ( 3 )

Seasonal Activity

Adults present all year.

Diet and Behavior

Diet: The larvae feed on the leaves of Celtis ehrenbergiana (Klotzsch) Liebm. (Spiny Hackberry).

Life History

Breeds all year in southern Texas.

About Butterflies and Moths: the wider group

Order-level background for Lepidoptera, the group containing Isogona snowi. Species-specific details appear above.

Group overview

Lepidoptera includes approximately 180,000 described species of butterflies and moths. Moths outnumber butterflies roughly 10:1. The monarch butterfly's eastern population has declined by more than 80% since the mid-1990s, and the western population by over 95% since the 1980s. The IUCN lists the migratory monarch as Vulnerable.

Ecological role of the group

Butterflies and moths are essential indicators of ecosystem health. As caterpillars, they are a primary food source for birds - a single nest of blue tit chicks requires ~10,000 caterpillars. Adult moths pollinate many night-blooming plants.

Economic and practical significance of the group

Lepidoptera are critical pollinators. In Europe, grassland butterfly species have declined by almost 50% since the early 1990s. In the UK, three-quarters of butterflies are in decline. In the U.S., five butterfly species have gone extinct since 1950, with 29 listed as endangered.

Recorded sources for this group: IUCN Red List, Xerces Society, USFWS, PNAS, WWF. Imported estimates may describe particular regions or reporting periods.

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