Overview

Distribution

occurs (regularly, as a native taxon) in multiple nations

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National Distribution

Canada

Origin: Native

Regularity: Regularly occurring

Currently: Present

Confidence: Confident

Type of Residency: Year-round

United States

Origin: Native

Regularity: Regularly occurring

Currently: Present

Confidence: Confident

Type of Residency: Year-round

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Global Range: The species occurs throughout the eastern and southwestern U.S., reaching Canada only in southern Ontario, northeast to near Hamilton, and in southern Manitoba and southeastern Saskatchewan. The maps in Opler and Malikul (1992) showing Quebec records and in Holmes et al. (1991) showing records throughout southern and eastern Ontario are in error, owing to confusion with icelus. At present, brizo is known to occur in only three areas of southern Ontario: Lambton County (Pinery Provincial Park area), Norfolk County (St. Williams area), and the south shore of Lake Ontario (Hamilton to Grimsby).

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Physical Description

Type Information

Type for Thanaos mercurius Dyar, 1926
Catalog Number: USNM
Collection: Smithsonian Institution, National Museum of Natural History, Department of Entomology
Sex/Stage: Male;
Preparation: Pinned
Locality: Mexico C, V25 Mex., Mexico
  • Type: Dyar, H. G. 1926. Insecutor Inscit. Menstr. 14 (7/9): 141.
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Ecology

Habitat

Comments: Dry usually scrubby oak barrens, woodlands or dry oak forest. Habitat varies regionally, for example in New England very strongly associated with QUERCUS ILICIFOLIA, bu uses several oaks in New Jersey nad in the southeast.

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Migration

Non-Migrant: No. All populations of this species make significant seasonal migrations.

Locally Migrant: No. No populations of this species make local extended movements (generally less than 200 km) at particular times of the year (e.g., to breeding or wintering grounds, to hibernation sites).

Locally Migrant: No. No populations of this species make annual migrations of over 200 km.

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Associations

Flowering Plants Visited by Erynnis brizo in Illinois

Erynnis brizo Boisduval & LeConte: Hesperiidae, Lepidoptera
(observations are from Robertson; this skipper is the Sleepy Duskywing)

Asteraceae: Antennaria plantaginifolia [pist sn] (Rb); Boraginaceae: Lithospermum canescens sn (Rb); Oxalidaceae: Oxalis violacea sn (Rb); Polemoniaceae: Polemonium reptans sn (Rb); Ranunculaceae: Ranunculus septentrionalis sn (Rb); Scrophulariaceae: Collinsia verna sn np (Rb); Violaceae: Viola cucullata sn (Rb), Viola pedata sn (Rb)

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Molecular Biology and Genetics

Molecular Biology

Statistics of barcoding coverage: Erynnis brizo

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 0
Specimens with Barcodes: 16
Species With Barcodes: 1
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Conservation

Conservation Status

National NatureServe Conservation Status

Canada

Rounded National Status Rank: N5 - Secure

United States

Rounded National Status Rank: N5 - Secure

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NatureServe Conservation Status

Rounded Global Status Rank: G5 - Secure

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Wikipedia

Erynnis brizo

Common names
Banded Oak Duskywing, Sleepy Duskywing

E. brizo is a species of Hesperiidae that occurs throughout North America and is commonly confused with E. juvenalis and E. lucilius.[2]

Description[edit]

The upper forewing is blackish-brown with continuous bluish-brown spots. The hindwing is almost completely brown with lighter brown spots. The caterpillar of this species is small and gray-green, with purplish tips. There is a faint lateral white stripe. Unlike most caterpillars Hesperiidae have distinct heads and the E. brizo's head is brown with an orange spot.[3]

Habitat[edit]

This small Erynnis stays in Oak-pine barrens and cut-over forest. It can be seen near forest edges including near roads, train tracks and towns.

Life cycle[edit]

There is a single brood which flies between April and July in this period the females lay eggs singly on the host plants, black oak and other common oak in its range. Adults nectar on blueberry, dandelion, birdfoot violet, blue violets and strawberries.

Mating

References[edit]

  1. ^ "Erynnis brizo Boisduval & Le Conte 1832 - Encyclopedia of Life". Retrieved 2009-06-11. 
  2. ^ "Species Erynnis brizo - Sleepy Duskywing - BugGuide". Retrieved 2009-06-11. 
  3. ^ Nielsen, Mogens C. (1999). "Skippers". Michigan Butterflies & Skippers A Field Guide and Reference (1st ed.). Michigan State University Extension. pp. 184–185. ISBN 1-56525-012-5. 
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