Clypeolus

Key to species of Clypeolus View in CoL

1. Dorsum covered with abundant erect setae in addition to the underlying appressed scales covering the integument........ 2

- Dorsum with scattered, clubbed, inclined setae in addition to the underlying appressed scales covering the integument..... 7

2 (1). Pronotum and elytra without fascicles formed by closely clustered patches of erect scales. Apex of elytra with distinct patches of bright white scales at junction of interstriae 5 and 8. Femoral teeth minute....................... C. signatus (Broun) View in CoL

- Pronotum and/or elytra with distinct fascicles formed by close clusters of erect scales. Apex of elytra clothed with scales evenly coloured, without maculae.............................................................................. 3

3 (2). Fascicles present on the pronotum and on the base of the elytra. Pleural areas of the prothorax clothed with dense pale brown scales, which significantly contrast with darker scales on the disc of the pronotum.................................. 4

- Fascicles present on the elytra only. Pleural areas of the prothorax densely clothed with scales of similar colour to the disc of the pronotum; no significant contrast between the two........................................................ 5

4 (3). Elytra in dorsal view evenly narrowing to apex from about midpoint of elytra, apex narrowly rounded; lateral pale patches strap-shaped, composed of greyish yellow scales with a relatively low contrast with the remainder of the elytra, posterior margin oblique and delimited by a line of raised scales. Abdominal ventrites clothed with relatively sparse, elongate scales...................................................................................... C. cilicollis (Broun) View in CoL

- Elytra in dorsal view with lateral margins subparallel to apical 1/4, apex broadly rounded; lateral pale patches triangular, composed of yellowish white scales that strongly contrast with the remainder of the elytra, posterior margin transverse. Abdominal ventrites densely clothed with round scales........................................ C. brookesi (Broun) View in CoL

5 (3). Fascicles usually scattered on the basal 1/2 of the elytra. Overall colouration variable, with extensive patches of highly contrasting light and dark brown scales; in particular, the vertex and base of the rostrum with a large area of pale yellow scales, and consistently with a small cluster of about four light yellow scales present in the centre of the pleural area of the prothorax surrounded by moderate to dark brown scales................................................. C. pascoei (Broun) View in CoL

- Fascicles confined to discrete areas on the disc or the declivity of the elytra. Overall colouration an even light greyish brown, without any areas of strongly contrasting scales............................................................. 6

6 (5). Disc of elytra with long crests of erect scales extending along interstria 4. Overall body shape squat and oval; elytra broader, 1.11 × longer than wide................................................................. C. veratrus (Broun) View in CoL

- Summit of elytral declivity with short fascicles on interstriae 2 and 4. Overall body shape elongate oval; elytra narrower, 1.26 × longer than wide.................................................................... C. maritimus (Broun) View in CoL

7 (1). Pronotum with lateral margins weakly sinuous in dorsal view.................................................. 8

- Pronotum with lateral margins strongly sinuous in dorsal view, strongly constricted in anterior 1/3..................... 9

8 (7). Scales on dorsum tessellate, closely appressed to surface, resulting in a tidy appearance.................................................................................................. C. maritimus (Broun) View in CoL ( cryptobius View in CoL form)

- Scales on dorsum overlapping, inclined, loosely appressed to surface, resulting in a shaggy appearance.................................................................................................... C. hallae new species

9 (7). Pronotum with the disc of the posterior portion convex...................................................... 10

- Pronotum with the disc of the posterior portion with at least the medial area flattened or concave..................... 11

10 (9). Elytra with large tubercles on interstria 3 above the declivity. Disc of elytra strongly curved in lateral view.................................................................................................... C. binodes (Broun) View in CoL

- Elytra without tubercles on interstria 3 above the declivity, though a fascicle of erect scales is present. Disc of elytra level in lateral view....................................................................... C. sympedioides (Broun) View in CoL

11 (7). Pronotum with lateral margins in dorsal view weakly sinuate, a relatively weak constriction in anterior 1/3, lateral margins in posterior 2/3 somewhat curved. Elytral striae with large, elongate punctures. Scape shorter and broader... C. robustus (Broun) View in CoL

- Pronotum with lateral margins in dorsal view strongly sinuate, with a dramatic constriction in the anterior 1/3, lateral margins in posterior 2/3 subparallel. Elytral striae with smaller, subcircular punctures. Scape elongate and slender.............. 12

12 (11).Pronotum with a sharp distinction between the dorsal and pleural faces; disc strongly flattened, with broad scales around the margins and forming crests at the apex. Elytra with a broadly rounded apex, the lateral margins in dorsal view evenly curved to apex in posterior 1/4; anterior margin of lateral pale patches curved, extended anteriorly to reach humeri..................................................................................................... C. cineraceus Broun

- Pronotum with surface evenly curved between the dorsal and pleural faces; disc often with a vase-shaped pattern with the outline made up of erect scales. Elytra with the apex narrowly rounded, in dorsal view the lateral margins often appearing sinuous in the posterior 1/4, where the strong carina on interstria 8 tapers off; lateral pale patches usually distinct; anterior margins oblique, often not extending anteriad of the anterior 1/4.............................. C. lachrymosus (Broun) View in CoL