Page 7 · Ground Beetles (Carabidae) - 1800 Species, Identification & Facts

Tachys pulchellus

Tachys pulchellus is a species of ground beetle in the family Carabidae. It is found in North America.

Tachys translucens

Identification: (From 1937 description): Small, slender, depressed; entirely testaceous, head large ("9/10 width prothorax"), pronotum cordate with sinuate margins basally, hind angles right; elytra subparallel.

Tachyta angulata

Identification: Some helpful clues include head with flattish frons, proportionately long elytra with staightish lateral borders, pronotum with long sinuation of lateral margins, posterior elytra punctures not distinctly anterior to ends of recurved

Tachyta inornata

Identification: Key characters are pronotum with absent laterobasal carina and elytron with lateral-most stria not uniformly sulcate. --P.W. Messer, 3.XI.2010

Tachyura anceps

Identification: Among other subtle differences, head is usually brownish vs blackish in most T. incurva

Tachyura cockerelli 0

Tachyura cockerelli

Identification: syntype "Elongate, moderately convex, uniformly pale rufous in color. Prothorax slightly wider at base than at apex, the posterior transverse impression tripunctate. Elytra with three well-marked striae and more or less evident traces

Tachyura ferruginea

Identification: The reduced eye (with temple bulky posteriorly) which, along with the uniform pale color and inflated elytra, is unique among North American congeners. ‒Peter Messer

Tachyura granaria

Identification: elytra shorter, plumper, more unicolorous and forehead shinier (no microscuplture) compared to similar species

Tachyura incurva

Identification: neotype • Among other subtle differences, head is usually blackish (brownish in most E. anceps )

Tachyura lutea

So far, the earliest known occurrence of this species in N. America is a male specimen collected at light in Chattanooga, TN on 29 June 2012. (det C.W. Harden 2024, Carnegie Museum of Natural History collection)

Tachyura nebulosa

Identification: Looks like a larger version of T. anceps with the usual pale "clouds" at elytral shoulders and apices, distinguished by 3 large punctures at mid-base of pronotum. ―P.W. Messer, 8.ix.2009

Tachyura parvula

Identification: Distinguished from other congeners in our area by the complete 8th elytral stria. The five well impressed punctate striae on each dorsal elytron also helps. earliest record in our area: WA 1940

Tachyura rubricauda

Identification: Similar to xanthopus, but with more elytral striae and with the pale elytral apex more abrupt and contrasting with the rest of the elytra.

Tachyura vernicata

Identification: black, with 4 ±distinct pale spots on elytra

Tule Beetle

Tanystoma maculicolle

Wings are dimorphic. At dusk, usually after rain in the fall, beetles may enter houses in large numbers.

Tecnophilus pilatei

Identification: distinguished from more widespread T. c. croceicollis by the dark apices ("knees") of the femora, elytral striae much more coarsely punctate, and narrower, less cordate pronotum. (comment by P.W. Messer, 12 June, 2021) Type locality:

Carolina Metallic Tiger Beetle

Tetracha carolina

Identification: (Adult) dorsal surface glossy metallic green, often mixed with red or purple; large cream-colored spots (apical lunules) at apex of elytra Differentiation of larvae of T. virginica vs. T. carolina may be possible. Quoting from Hamilto

Florida Metallic Tiger Beetle

Tetracha floridana

Identification: Dorsal surface dark greenish-black with pale apical elytral lunules; humeral region dark green or black, lacking violet reflections. Nocturnal. Comes to lights. Apparently, does not fly often.

Upland Metallic Tiger Beetle

Tetracha impressa

Identification: The "apical lunule" (white area on the tips of the elytra) is fairly straight and constant in width. Rest of body blackish green, somewhat duller than T. carolina . In T. carolina , the white apical lunule gets distinctly wider toward

Virginia Metallic Tiger Beetle

Tetracha virginica

Identification: Adult Tetracha virginica is easy to recognize, as its elytra are entirely green, lacking the apical tan marks of the other three species. Differentiation of larvae of T. virginica vs. T. carolina may be possible. Quoting from Hamilton

Tetragonoderus laevigatus

Identification: Det. Michael C. Thomas, 2008 earliest NA record: FL 2007

Tetragonoderus latipennis

Type Locality: Texas; Mr. Belfrage . [Belfrage was living in Clifton , Bosque Co., TX when this sp. was described]

Tetragonoderus pallidus

Tetragonoderus pallidus is a species of beetle in the family Carabidae. It was described by G.Horn in 1868.

Trechus apicalis

Identification: Normal last maxillary palpomere (unlike Bembidion), paler brownish elytra, and pronotum with straightish (non-sinuate) sides are helpful clues.

Trechus obtusus

Small (3.5 to 4 mm) brown or dark brown ground beetle. Found in a variety of habitats, including agricultural fields, hills and gardens. Widespread and fairly frequent in Britain.

Trechus quadristriatus

A small (about 4 mm) orange / brown ground beetle; the head and sometimes the pronotal disc being darker. It is a broad and flat species with weakly rounded and somewhat parallel elytra. The head is shiny black. It is very similar to Trechus obtusus