LepidopteraGeometridae – Geometrid Moths

Spurred Wave - Hodges#6682

Drepanulatrix unicalcararia

This record describes Drepanulatrix unicalcararia (species). Recorded family: Geometridae. Recorded order: Lepidoptera.

Identification and Appearance

Spurred Wave - Hodges#6682 - Drepanulatrix unicalcararia
Contributed by Robin McLeod; Additional contributions by Maury Heiman , Randy Hardy

Adult: forewing variably pale yellowish, brown, or gray with fine speckling and pointed apex; PM line yellow or orangish, slightly wavy, often broken in middle, sometimes bordered distally by black spots near upper and lower ends; AM line slightly irregular, faint or sometimes lacking; small dark discal spot, sometimes faint or lacking; no dotted terminal line; hindwing pale off-white, darker toward outer margin, with tiny dark discal dot (sometimes lacking) Larva: body light brown with obscure brown markings, presumably cryptic against branches of hostplant

Classification

Kingdom
Animalia
Phylum
Arthropoda
Class
Insecta
Order
Lepidoptera (Butterflies and Moths)
Superfamily
Geometroidea
Family
Geometridae (Geometrid Moths)
Subfamily
Ennominae
Tribe
Caberini
Genus
Drepanulatrix

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

Habitat and Range

Habitat

open mountain forests; adults are nocturnal and come to light

Geographic Range

British Columbia and Alberta to California and Arizona

Seasonal Activity

On the wing from March through October

Diet and Behavior

Diet: larvae feed only on leaves of New Jersey Tea ( Ceanothus spp.)

Life History

one or possibly two generations per year

About Butterflies and Moths: the wider group

Order-level background for Lepidoptera, the group containing Drepanulatrix unicalcararia. 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.

Explore Lepidoptera families and species →

Photos of Spurred Wave - Hodges#6682 (2)

Spurred Wave - Hodges#6682 - photo 1
Contributed by Robin McLeod; Additional contributions by Maury Heiman , Randy Hardy
Spurred Wave - Hodges#6682 - photo 2
Contributed by Robin McLeod; Additional contributions by Maury Heiman , Randy Hardy

Photo credits: Contributed by Robin McLeod; Additional contributions by Maury Heiman , Randy Hardy

Frequently Asked Questions About Spurred Wave - Hodges#6682

What is Spurred Wave - Hodges#6682?

Spurred Wave - Hodges#6682 (Drepanulatrix unicalcararia) is a species in the family Geometridae, within the order Lepidoptera.

How big is Spurred Wave - Hodges#6682?

Wingspan 30-34 mm, based on 4 Internet photos

How do you identify Spurred Wave - Hodges#6682?

Adult: forewing variably pale yellowish, brown, or gray with fine speckling and pointed apex; PM line yellow or orangish, slightly wavy, often broken in middle, sometimes bordered distally by black spots near upper and lower ends; AM line slightly irregular, faint or sometimes lacking; small dark discal spot, sometimes faint or lacking; no dotted terminal line; hindwing pale off-white, darker toward outer margin, with tiny dark discal dot (sometimes lacking) Larva: body light brown with obscure brown markings, presumably cryptic against branches of hostplant

Where is Spurred Wave - Hodges#6682 found?
FeatureDetails
Habitatopen mountain forests; adults are nocturnal and come to light
RangeBritish Columbia and Alberta to California and Arizona
What does Spurred Wave - Hodges#6682 eat?

The diet of the Spurred Wave - Hodges#6682 includes larvae feed only on leaves of New Jersey Tea ( Ceanothus spp.).

When is Spurred Wave - Hodges#6682 active?

Spurred Wave - Hodges#6682: seasonal activity - On the wing from March through October.

What is the life cycle of a Spurred Wave - Hodges#6682?

one or possibly two generations per year

How we use and review source data. Source count does not imply independent verification.

Photo credits: Contributed by Robin McLeod; Additional contributions by Maury Heiman , Randy Hardy. Contributors retain copyright over their individual contributions.