Key to the British Oxytelinae

For more information on this family, click HERE.

1.

Tarsi 5-segmented.

Tarsi 3-segmented.

-2-
-5-
2.

Forebody strongly punctured and distinctly metallic. Tibiae smooth. 2.5-3.0mm

Forebody much less strongly punctured and not metallic. Size larger, 6-9mm

Syntomium
-3-
3.

Punctures on elytra forming distinct striae. Tibiae with spines along out edge. Entire body black or very dark. 6.5-7.0mm.

Elytra without punctured striae. Pronotum and/or elytra pale.

Coprophilus
-4-
4.

Anterior and middle tibiae without spines. Elytra much broader than pronotum and pronotum with a wide and deep basal depression. 6.5-7.0mm.

Anterior and middle tibiae with spines along the outer margin. Elytra more elongate and only slightly wider than the pronotum. Pronotum smooth across the base. 5.0-6.5mm

Deleaster
Manda
5.

Tibiae smooth; without spines along the outer margin.

Tibiae with spines along the outer margin.

-6-
-8-
6.

Elytra diverging along the suture towards the apex, usually exposing the wings. Pronotum quadrate to transverse and only weakly narrowed towards the base. Mostly smaller species; 1.0-2.25mm.

Elytra abutting to the apex of the suture. Pronotum clearly more strongly narrowed to the base than towards the apex. Mostly larger species; 1.5-4.0mm.

Thinobius
-7-
7.

Elytra densely pubescent, elongate and much wider than the pronotum. 3.0-3.5mm

Elytra sparsely pubescent, and if elongate then only slightly wider than the pronotum. 1.5-4.0mm.

Teropalpus
Carpelimus
8.

Pro-tibiae with 2 rows of spines along the outer margin. Pronotum with a central longitudinal impression or a smooth median line. Prothorax and elytra separated by a broad pedicel. Form parallel-sided and convex. 2.5-7.0mm.

Pro-tibiae with a single row of spines along the outer margin. Pronotum variously sculptured, prothorax and elytra not pedunculate, form flatter.

Bledius
-9-
9.

Pronotum with a single longitudinal channel. 2.2-4.5mm.

Pronotum variously sculptured but not with a single central channel.

-10-
10.

Pronotum with 3 longitudinal depressions on the disc and large shallow depressions towards the lateral margins.

Pronotum not as above.

-11-
-12-
11.

Scutellum cordate with a small median keel. 1.2-5.0mm.

Scutellum triangular and smooth. 2.5-5.0mm.

Anotylus
Oxytelus
12.

Entire lateral margin of pronotum visible from above. [Pronotum with a transverse impression towards the base.] 3.0-3.5mm.

Anterior margin of pronotum reflexed ventrally and not visible from above.

Thinodromus
-13-
13.

Elytra with punctured striae at least in the basal half. 2.0-2.5mm.

Elytral punctures randomly arranged.

Planeustomus
-14-
14.

Pronotum widely transverse with obsolete posterior angles and an arcuate longitudinal depression either side of the middle.  4.0-4.5mm.

Pronotum with a median longitudinal ridge and two oblique ridges either side towards the base. 3.0-5.0mm.

Aploderus
Ochthephilus