Exocelina evelyncheesmanae

Size and shape: Beetle middle-sized (TL-H 3.75–4.1 mm, TL 4.05–4.45 mm, MW 1.9–2.2 mm), with oblong-oval habitus, broadest at elytral middle. Coloration: Head reddish-brown, darker medially and posterior eyes, to piceous, with dark brown anterior margin, pronotum reddish-brown to piceous, paler on sides (in teneral specimens anterior angles yellowish-red), elytra dark brown to piceous, seldom with reddish sutural bands, head appendages yellow to yellowish-red, legs distally darker than head appendages, hind legs dark brown (Fig. 29). Surface sculpture: Head with dense punctation (spaces between punctures 1–4 times size of punctures), evidently finer and sparser anteriorly; diameter of punctures smaller than diameter of cells of microreticulation. Pronotum with finer, sparser, and more evenly distributed punctation than on head. Elytra with very sparse and extremely fine punctation. Pronotum and elytra with weakly impressed microreticulation, dorsal surface, thus, shiny. Head with microreticulation stronger. Metaventrite and metacoxa distinctly microreticulate, metacoxal plates with longitudinal strioles and transverse wrinkles. Abdominal sternites with distinct microreticulation, strioles, and fine sparse punctation, coarser and denser on two last abdominal sternites. Structures: Pronotum with distinct lateral bead, absent in anterior angles. Base of prosternum and neck of prosternal process with distinct ridge, smooth and slightly rounded anteriorly (less than in Exocelina waigeoensis sp. n.), without anterolateral extensions. Blade of prosternal process lanceolate, relatively narrow, convex, with distinct bead and few setae; neck and blade of prosternal process evenly jointed. Abdominal sternite 7 broadly rounded apically. Male: Antennomeres 3–7 very slightly enlarged, antennomere 3 slightly more triangular than other antennomeres (Fig. 3A); antennomeres 3–5 rugose ventrally. Protarsomere 4 with middle-sized, slender, evidently curved anterolateral hook. Protarsomere 5 ventrally with anterior row of 13 short setae and posterior row of 5–6 short setae (Fig. 3B). Abdominal sternite 7 with 5–12 lateral striae on each side. Median lobe with strong submedian constriction in ventral view and truncate apex in lateral view (Figs 3C, D). Paramere with notch on dorsal side and subdistal part short and small, with less numerous, relatively short, thick, and flattened setae (Fig. 3E). Female: Antennae more slender, abdominal sternite 7 without striae.

Indonesia: West Papua Province: Raja Ampat Regency. The species is known only from the type locality (Fig. 50).