Helobata quatipuru Fernández & Bachmann, 1987

Clarkson, Bruno, Santos, André Dias Dos & Ferreira-Jr, Nelson, 2016, On Brazilian Helobata Bergroth, 1888 (Coleoptera: Hydrophilidae): description of two new species, new records, and key to species, Zootaxa 4126 (4), pp. 548-562 : 558-559

Helobata quatipuru Fernández & Bachmann, 1987

(Figs. 20 to 24)

Material examined. BRAZIL: Rio de Janeiro State: Maricá municipality: “ Restinga de Maricá, 08.VII.1996, poça, Ferreira-Jr N. col.” (1 male: DZRJ, Coleoptera 1217 ); “Restinga de Maricá, Poça (Aeronáutica), 13.VI.1996, Ferreira-Jr N. col.” (1 male: DZRJ, Coleoptera 1218 ).

Diagnosis. Moderate-sized species (about 6.10 to 6.90 mm in length). Dorsum (Fig. 20) dark brown with black areas; head and pronotum without metallic sheen; pronotum with faintly delimited central black area; with inconspicuous black spots around scutellum, on anterior fourth (interstriae 1–4), on medial portion (interstriae 8 and 10), and on posterior third (interstria 4); abdominal ventrites black to dark brown (Fig. 21). Clypeal disc and frons shagreened on interstices of ground punctuation; fine and very short, decumbent setae distributed on anterior half of the clypeus, and on lateral portions of frons; anterior clypeal margin sinuous, anterolateral angles tooth-like produced (Figs. 20–21); frontoclypeal suture present, inconspicuous (Fig. 20). Maxillary palpomere 3 and 4 subequal in length. Mentum finely rugose on lateral portions (Fig. 21). Punctures on elytral rows fine, weakly marked on rows 8–10, irregularly spaced on row 10 (Fig. 20). Posteromedial elevation on mesoventrite semitrapezoidal, very wide (1.60x longer than wide); with strongly raised lateral carinae, oblique and converging anteriorly, widely distant, convex posteriorly; not strongly connected with the metaventral projection (Fig. 21). Metaventral projection (between mesocoxae) forming an elevated longitudinal carina strongly connected with, somewhat higher than, metaventral medial carina (Fig. 21). Maximum width of phallobase at about half of its length; manubrium short and narrow, truncated at base; parameres longer than median lobe, inner margins sinuate in ventral view, convex on basal half, concave on apical half, outer margins slightly convex, almost straight, apex slightly truncate, strongly bent inwards; median lobe with shallow apical emargination on dorsal lobule (ca. 0.12x length of median lobe); ventral lobule as long as dorsal lobule, with apex visible on dorsal view, rounded, produced ventrally as a hook, visible in lateral view (Figs. 14–17).

PLATE 5. Figs. 20 to 24. Helobata quatipuru Fernández & Bachmann, 1987 . habitus: 20: dorsal view, 21: ventral view; aedeagus: 22: dorsal view, 23: ventral view, 24: lateral view.