University of Alberta Museums Search

Genus - Trechus

Taxonomic Hierarchy for University of Alberta E.H. Strickland Entomological Museum

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14 results for "Trechus"

Trechus apicalis

University of Alberta E.H. Strickland Entomological Museum

IdentificationMember of the chalybeus group, with large head and short elytra, each eltron with at least 4 complete, punctate striae, elytra more or less iridescent. Piceous to light bown, elytra usually palest, appendages paler. Microsculpture on disc of prothorax consisting of dense, transverse lines, therefore disc iridescent. Easily separated from other members of the group by the rounded hind angles of prothorax, with almost no sinuation of sides. Length 3.9-4.7 mm.
<i>Trechus apicalis</i>
<i>Trechus apicalis</i>

Trechus chalybeus

University of Alberta E.H. Strickland Entomological Museum

SeasonalityThis species has been collected in July and August. IdentificationMember of the chalybeus group, with large head and short elytra, each eltron with at least 4 complete, punctate striae, elytra more or less iridescent. Piceous, outer margin of elytyra and oftern entire prothorax, brown, appendages paler but antenae more or less infuscated as a rule. Microsculpture on disc of prothorax open, forming evident meshes, slightly iridescent. Hind angles of prothorax more or less denticulate. Outer elytral striae obliterating, 5th more or less interrupted. Length 3.7-4.8 mm.
<i>Trechus chalybeus</i>

Trechus coloradensis

University of Alberta E.H. Strickland Entomological Museum

Trechus crassicapus

University of Alberta E.H. Strickland Entomological Museum

Trechus hydropicus

University of Alberta E.H. Strickland Entomological Museum

Trechus n. sp.

University of Alberta E.H. Strickland Entomological Museum

Trechus obtusus

University of Alberta E.H. Strickland Entomological Museum

<i>Trechus obtusus</i>

Trechus oregonensis

University of Alberta E.H. Strickland Entomological Museum

IdentificationMember of the chalybeus group, with large head and short elytra, each eltron with at least 4 complete, punctate striae, elytra more or less iridescent. Microsculpture on disc of prothorax more open than in chalybeus, therefore disc lacks iridescence. Prothorax more cordate than in any other species in the group, hind angles more or less denticulate. Outer elytral striae better developed, 5th complete, or nearly so. Length 3.7-4.3 mm.
<i>Trechus oregonensis</i>

Trechus ovipennis

University of Alberta E.H. Strickland Entomological Museum

Trechus pomonae

University of Alberta E.H. Strickland Entomological Museum

Trechus rubens

University of Alberta E.H. Strickland Entomological Museum

Trechus sp.

University of Alberta E.H. Strickland Entomological Museum

<i>Trechus sp.</i>

Trechus tenuiscapus

University of Alberta E.H. Strickland Entomological Museum

IdentificationMember of the chalybeus group, with large head and short elytra, each eltron with at least 4 complete, punctate striae, elytra more or less iridescent. Larger and darker on an average than chalybeus, with broader prothorax. Microsculpture on disc of prothorax consisting of dense, transverse lines, therefore disc iridescent. Hind angles of prothorax always denticulate. Length 4.1-4.9 mm.
<i>Trechus tenuiscapus</i>

Trechus uncifer

University of Alberta E.H. Strickland Entomological Museum

Taxonomic Hierarchy for University of Alberta E.H. Strickland Entomological Museum