Pericompsus (Pericompsus) subincisus Erwin 1974

Pericompsus subincisus

TYPE-LOCALITY.—Rio Araguala, Santa Isabel, Mato Grosso, Brazil.

TYPE-SPECIMENS.—The holotype female is in CAS. It was collected by B. Malkin in 1957. One paratype is listed below.

DESCRIPTION.—Form (Figure 111): Similar to P. clitellaris except pronotum narrower at base. Easily distinguished from members of all species of the subgroup by the well-engraved punctate-striate interneurs.

Color: Rufotestaceous; midventer, elytral cloud, side margin of elytra, palpi, and antennal articles 5–11 piceous or darkly infuscated, legs testaceous.

Head: Across eyes slightly narrower than width of pronotum; frontal furrows well impressed and evenly arcuate, each extended to posterior margin of eye; eyes large and prominent.

Pronotum (Figure 111): Broadly subcordate, sides shallowly sinuate in basal half; base broadly lobed; hind angles about right; side margins not reflexed; disc moderately convex.

Elytra: Each elytron with 6 punctate interneurs; punctures very small, contiguous, and striate; all rows entire, though less impressed apically, interneur 7 effaced externally throughout, interneur 8 well impressed and foveate at middle; fovea small, smaller in diameter than width of elytral explanation; humeral margin strongly rounded at base, almost angulate, connected to base of interneur 4; side margins narrowly explanate, minutely serrate-setulose in basal fourth; chaetotaxy as in P. ephippiatus; plica long and well developed externally.

Microsculpture: Strongly impressed isodiametric reticulation on pronotum and frons, slightly more transversely stretched on elytra.

Genitalia: Male unknown; female not dissected.

Size: Length, 2.52–2.60 mm; width, 0.88–1.04 mm; 2 specimens measured.

VARIATION.—The paratype is a much smaller specimen with a narrower pronotum, but it agrees in all characteristics with the holotype.

NATURAL HISTORY.—Both specimens were collected in July; neither was teneral.

ETYMOLOGY.—The Latin adjective name, subincisus, refers to the similarity between the elytra of the members of this species and those of P. incisus.

LOCALITY RECORDS (Figure 118).—I have seen only the types from the following locality:

SOUTH AMERICA: BRAZIL: Mato Grosso State, Rio Araguala, Santa Isabel (CAS) and the paratype from Goias State, Rio Araguala, Ilha do Bananal, which is across the river from the type-locality.