Brasilplatus bahianus Oliveira, Linzmeier & Konstantinov, new species

(Figs 1–13)

Description. Body 2.5–2.7 mm long and 2.1 mm wide (N=3). Body, except antennae and tibiae dark brown. Antennomeres I to IV brown, V to IX dark brown, X and XI yellowish. Tibiae brown. Antennal calli not separated from rest of head surface by grooves or sculpture, quadrate, punctured as vertex. Midfrontal sulcus distinct; supracallual and suprantennal sulci shallow; supraorbital sulci shallow reaching eye margin. Antenna short; antennomere I longest, almost length of antennomeres II and III together, slightly wider at apex; antennomere II rounded; antennomeres III to V longer than wide, decreasing in length; antennomere VI the smallest; antennomeres VI to X moniliform, densely pilose; antennomere XI with acute apex. Pronotum rectangular, 1.8 times wider than long. Elytra with first to third striae reaching elytral apex; fourth and fifth striae merging at medial third; sixth and seventh striae terminating at end of middle third; eighth stria reaching apex; ninth stria with deeper punctures at base becoming shallower to apex and terminating before apex (Figs 1, 5). Elytra with three small, rounded patches of white setae arranged as follows: one anterior between fourth and sixth striae, two medially between first and third striae and between sixth and eighth striae (Fig. 1, 5). Median lobe of aedeagus with lateral margins parallel and convergent to apex; internal sac of aedeagus with sparse pilosity and microsculpture (Figs 9, 10). Tignum with distal area wide, rectangular, basally sclerotized, with long setae on apical margin (Fig. 13). Vaginal palpi parallel, sides of each slightly divergent, with setae on apex; external margin on apical third slightly inflated, then oblique to rounded apex (Fig. 12). Bursa copulatrix membranous, without sclerites, except ring with small, sclerotized plicae proximally. Spermathecal receptacle oval, less sclerotized than pump and canal; pump longer than receptacle, with apical projection elongate and curved; canal deeply curved (Fig. 11).

Etymology. The specific epithet is an adjective (ethonym) to designate that it originated from the state of Bahia, Brazil, the state where the specimens were collected.

Type Material. Holotype: female (DZUP): / Brasil-BA; Jequié (Brejo Novo); REF. SP 87; 13º56’41”S e 40º60’33,9W; XII/2008 - Mata de Cipó; Carneiro, M.A.F . / Holotype, Brasilplatus bahianus Oliveira, Linzmeier & Konstantinov, 2021 sp. nov. [red label].

Paratypes (2): male (DZUP): same label as holotype, except REF. SP 18 and yellow paratype label [microvial with aedeagus; left antenna broken; head naturally damaged]; female (UFFS-RE): same label as holotype, except yellow paratype label [microvial with female genitalia; left antenna broken; left metatibia broken; right metatarsomeres broken] .