Hydrobiomorpha spatula Bachmann, 1988

Figs. 13–14, 17–18

Material examined. 1 ♂ Brazil, Piauí State, Piripiri Municipality, Cachoeira do Bota Fora, 4°12’51.1”S, 41°40’01.7”W, 01. VI.2019.

Diagnosis. Head, pronotum and elytra black (Fig. 13). Pronotum with very dense and regular fine punctation (Fig. 13). Prosternum strongly carinate, with elevated and glabrous central area; anterior extremity rounded and posterior extremity slightly projected (Fig. 14). Elytron with systematic punctations reduced, barely visible; lateral margin with irregular punctations, some with short setae. Meso- and metasterna fused and elevated, forming a sternal keel (Fig. 14); anterior extremity without indentation and posterior extremity not exceeding the half of the first ventrite. Keel slightly thickened in the metasternal region. Femora glabrous. Ventrites II–V pubescent, with medial area glabrous (Fig. 14). Genitalia as in figures 17–18.

Distribution. Brazil, State of Bahia. New record for the state of Piauí: Piripiri municipality.