Pericompsus (Pericompsus) grossepunctatus Bates 1871

Pericompsus grossepunctatus Bates, 1871:245

DESCRIPTION.—Form (Figure 147): Of forebody similar to P. hirsutus, but elytra much more inflated and elytral explanation much narrower. Easily distinguished from members of that species by the presence of three supraorbital setigerous pores per eye, from members of the following species by the concolorous antennae.

Color: Shiny rufous, apex of elytron and appendages testaceous.

Head: Across eyes subequal to width of pronotum; three supraorbital setae per eye; frontal furrows moderately deep, linear, extended to midfrons; frons depressed; eyes large and prominent.

Pronotum (Figure 147): Strongly subcordate, sides sinuate and constricted in basal half; base broadly lobed; hind angles about right; side margins not reflexed; bead almost effaced, each side with four setigerous pores; disc strongly convex.

Elytra: Each elytron with 6 punctate interneurs; punctures moderately large and coarse; and separated longitudinally by twice their own diameter or more; rows 2–6 effaced at apical third, row 1 entire and striate in apical third, interneur 7 effaced externally throughout; interneur 8 well impressed and foveate just before middle; fovea large, slightly larger in diameter than width of elytral explanation; humeral margin strongly rounded at base, not connected to base of interneur 4; side margins setose from base to apex, setae slightly longer than width of elytral explanation, side margin not serrate; chaetotaxy as in P. hirsutus; plica long and well developed externally.

Microsculpture: Effaced from entire dorsal surface.

Genitalia: Male (Figure 149) (1 examined); female not dissected.

Size: Length, 2.76–2.88 mm; width, 1.12–1.24 mm; 4 specimens measured.

VARIATION.—The small sample available is quite homogeneous.

NATURAL HISTORY.—Unknown.

LOCALITY RECORDS (Figure 151).—I have seen six specimens, all from the type-locality, “Rio Janeiro,” Brazil (BMNH, MHNP).

The incisus group

The members of the incisus group are characterized by the bicarinate elytral intervals and angulate humeral angle. Each interval, laterally and medially, is carinate to a varying degree in different species; thus the adjacent punctate interneur is located in a trough.

There are four species presently representing this group, with a combined range extending from 28° S latitude in Argentina to about 10° N latitude in Venezuela.