June 20, 2020

Keys to North American Stag Beetles (Coleoptera: Lucanidae) Part 2: Dorcus

WORK IN PROGRESS 20/JUN/20

Genus Dorcus (Coleoptera: Lucanidae) species of North America, North of Mexico

The genus Dorcus contains two species across the continental United States and Canada, with most species being distributed across the Northeast, Southeast, and East-central United States. Dorcus brevis's range is entirely nested within that of Dorcus parallels and identification should take this into account.

Key to North American Dorcus species by M. J. Paulsen, University of Nebraska (download pdf)

Dorcus parallelus (Antelope Beetle) | iNaturalist Profile | BugGuide Profile | Generic Guide Profile

Dorcus brevis | iNaturalist Profile | BugGuide Profile | Generic Guide Profile

Dorcus parallelus, or the Antelope Beetle:

Typical Male ♂ and Female ♀

Primary features(pictures pending):

Secondary features (pictures pending):

Dorcus brevis

Typical Male ♂ and Female ♀

Primary features(pictures pending):

Secondary features (pictures pending):

Female Dorcus Comparative Identification

References</h2)

Posted on June 20, 2020 14:44 by mjwcarr mjwcarr

Keys to North American Stag Beetles (Coleoptera: Lucanidae) Part 1: Lucanus

WORK IN PROGRESS 20/JUN/20

Genus Lucanus (Coleoptera: Lucanidae) species of North America, North of Mexico

The genus Lucanus contains four species across the continental United States and Canada, with most species being distributed across the Northeast, Southeast, and East-central United States. Lucanus mazama is the only member of Lucanus to be distributed within the Southwestern United States and whose range at no point overlaps with another member of the genus.

Quick reference key to Neartic species by M. J. Paulsen, University of Nebraska (download pdf)

Lucanus elaphus (Giant Stag Beetle) | iNaturalist Profile | BugGuide Profile | Generic Guide Profile

Lucanus placidus | iNaturalist Profile | BugGuide Profile | Generic Guide Profile

Lucanus capreolus (Reddish-Brown Stag Beetle) | iNaturalist Profile | BugGuide Profile | Generic Guide Profile

Lucanus mazama (Cottonwood Stag Beetle) | iNaturalist Profile | BugGuide Profile | Generic Guide Profile

Lucanus elaphus, or the Giant Stag Beetle:

Typical Male ♂ and Female ♀

Primary features(pictures pending):
-Triangular labrum
-Uniformly dark legs
-Large Mandibles (♂ only)

Secondary features (pictures pending):
-slender body form
-chestnut coloration
-Smooth elytra/pronotum

Lucanus capreolus, or the Reddish-Brown Stag Beetle)

Typical Male ♂ and Female ♀

Primary features(pictures pending):
-Rounded labrum
-Bicolor legs
-one-toothed, sickle-like Mandibles (♂ only)

Secondary features (pictures pending):
-wide, bulky body form
-chestnut coloration
-Smooth elytra/ punctate pronotum

Lucanus placidus

Typical Male ♂ and Female ♀

Primary features(pictures pending):
-Rounded labrum (possibly shallower than L. capreolus*)
-uniformly dark legs
-Multi-toothed, straight(ish) Mandibles (♂ only)

Secondary features (pictures pending):
-widebody form (but not as bulky as L. capreolus)
-Dark coloration
-punctate elytra/pronotum

Lucanus mazama

Typical Male ♂ and Female ♀

Primary features(pictures pending):
-Shallow, wide labrum
-uniformly dark legs
-untoothed, sickle-like Mandibles (♂ only)
-range

Secondary features (pictures pending):
-widebody form
-Dark coloration

Female Lucanus Comparative Identification

References</h2)

Posted on June 20, 2020 14:09 by mjwcarr mjwcarr

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