Genus - Chlaenius

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


Results

59 results for "Chlaenius"

Chlaenius sericeus

University of Alberta E.H. Strickland Entomological Museum

SeasonalityAdults collected in Alberta from April to mid-July. IdentificationAdults: 11.4 – 16.1 mm in length. Entire dorsal surface usually metallic green, though sometimes appears bronze and also can appear bluish when viewed obliquely; rarely with entire dorsal surface being blue. Antennae are long and slender. Pronotum is usually subquadrate, having a basal width of more than 90% of the greatest width across the pronotum; sides slightly sinuate near obtuse posterior angles; middle usually with the greatest width and with apex much narrower than the base; the lateral rim is slightly wider posteriorly and is usually somewhat translucent. Aedeagus with right paramere usually entire and obtusely pointed. Adapted from Bell 1960.

Chlaenius alternatus

University of Alberta E.H. Strickland Entomological Museum

SeasonalityLarvae have been collected in early August. Adults have been collected in Alberta from mid-May to mid-July. IdentificationAdults: 10.5-14mm in length. Dorsal surface black and metallic though this can sometimes be faint. Pronotom often with a brassy or greenish hue laterally. Appendages black. Can be easily distinguished from all other Alberta species because all striae are broken at several points along their length; intervals are connected by convexities giving the elytral surface a transversely corrugated appearance; intervals 3, 5, 7, usually more convex. Setae behind pronotal shoulder are unicolorous, pale brown. Adapted from Bell 1960 and Lindroth 1963

Chlaenius niger

University of Alberta E.H. Strickland Entomological Museum

SeasonalityAdults collected in Alberta from mid-May to early August, but seem to be most active in June. IdentificationAdults: 11.3-14.8mm in length. Entire dorsal surface black. Head and pronotum without hints of violet sometimes seen in C. purpuricollis frosti. Appendages black or piceous. Pronotum very distinct, transverse with widest point being slightly posterior to middle, sides almost evenly curved (C. purpuricollis frosti has sides that are much wider at base); basal margin almost straight; lateral rim very prominent in comparison to other Alberta species. In this species, pronotal punctures are quite large and shallow with very short pubescence, leaving only patches of disc smooth; basal fovea broad, irregular, not reaching centre of prothorax. Prosternum with sparse, course, shallow punctures. Microsculpture isodiametric, readily seen on pronotom and elytra. Intervals slightly convex and densely punctate; setae reddish. Adapted from Bell 1960 and Lindroth 1963.

Chlaenius purpuricollis

University of Alberta E.H. Strickland Entomological Museum

SeasonalityAdults have been collected in Alberta from late May to late June. IdentificationAdults: 8.7-9.4mm in length. Dorsal surface usually pure black, sometimes with a slight violet hue on head and pronotum. Pronotum wider at base than at apex which help to easily distinguish it from C. niger. The basal impressions of the pronotum a moderately punctate with the rest of the base being only sparsly punctate; spare punctuation on both lateral line and median line, rest of disc with only a few scattered punctures. The second interval of the elytra tends to form irregular transverse rows of two to three punctures, with rows being separated from each other by a distance of approximately half the width of the interval. Adapted from Bell 1960 and Lindroth 1963.

Chlaenius lithophilus

University of Alberta E.H. Strickland Entomological Museum

SeasonalityIn Alberta this species has been collected from late May to early September. IdentificationAdults: 8.0-9.5mm in length which helps to distinguish them from C. sericeus sericeus. Entire dorsal surface usually bright metallic green but sometimes with a bluish hue, elytra subopaque; appendages rufo-testaceous, antennae infuscated frm the fourth segment. With the exception of the center of the frons, the head is coarsely punctate and pubescent. Antennal segment widening apicad, almost conical in appearance, especially near base. Microsculpture absent on head which also. aids to distinguish them from individuals of C. sericeus sericeus. Microsculpture of the prothorax is irregularly isodiametric and elytra are strongly granulate. Penis is short with a blunt apex. Adapted from Lindroth 1963.

Chlaenius pennsylvanicus

University of Alberta E.H. Strickland Entomological Museum

SeasonalityImmatures have been collected in August. Adult in Alberta have been collected from mid-May to late July. IdentificationAdults:10.4-11.9mm in length. Head and pronotum metallic green with pronotum often tinged with gold coloration. Pronotum relatively long and narrow in comparison to both C. lithophilus and C. nebraskensis. Also easily distinguished from C. lithophilus and C. nebraskensis as the head is smooth whereas the other species are punctate. Pronotal margins almost always sinuate. Legs, palpi, and antennal segments 1-3 yellow-brown to orange brown; antennal segments 4-11. Elytra with sides parallel, slightly convex; stria deep but narrow, with fine, close, inconspicuous puntures; intervals flat and densely punctate; microsculpture granular but fine and shiny in appearance; punctures are however, muricate, giving the surface a rough appearance. Pronotum with more strongly curved sides than C. nebraskensis; lateral margin red-brown to black. Adapted from Bell 1960.

Chlaenius nebraskensis

University of Alberta E.H. Strickland Entomological Museum

SeasonalityU.S. material (mostly from Texas) shows adults being collected from June to August. One Alberta specimen was collected in July. IdentificationAdults: 9.7-12.1mm in length. Known to have four color phases throughout its range: A green phase, with metallic green head, pronotom, and elytra; a blue phase, with dorsal surface blue; a weakly bicolored phase, with head and pronotum metallic green and elytra blue-green and a strongly bicolored phase which has a metallic green head and pronotum and elytra that are dark blue, violet, or blue-black. Alberta specimens are mostly green phase but occasionally of the weakly bicolored variety. Elytral epipleurae are entirely black and the ventral surface of this species is also entirely black. Appendages are entirely brown-orange and antennal segments 1-3 are slightly lighter than segments 4-11. Labrum truncate to slightly emarginate; pronotom transverse, widest at middle; lateral margin not sinuate. Elytral disc slightly convex; striae moderately fine, with fine, close punctation; intervals are flat and densely punctate. Micro sculpture is granular and fairly prominent. Adapted from Bell 1960.

Chlaenius glaucus

University of Alberta E.H. Strickland Entomological Museum

Chlaenius obsoletus

University of Alberta E.H. Strickland Entomological Museum

Chlaenius sp.

University of Alberta E.H. Strickland Entomological Museum

Chlaenius alternans

University of Alberta E.H. Strickland Entomological Museum

Chlaenius leucoscelis

University of Alberta E.H. Strickland Entomological Museum

Chlaenius impunctifrons

University of Alberta E.H. Strickland Entomological Museum

Chlaenius nemoralis

University of Alberta E.H. Strickland Entomological Museum

Chlaenius oxygonus

University of Alberta E.H. Strickland Entomological Museum

Chlaenius tricolor

University of Alberta E.H. Strickland Entomological Museum

Chlaenius brevilabris

University of Alberta E.H. Strickland Entomological Museum

Chlaenius aestivus

University of Alberta E.H. Strickland Entomological Museum

Chlaenius chaudoiri

University of Alberta E.H. Strickland Entomological Museum

Chlaenius orbus

University of Alberta E.H. Strickland Entomological Museum

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