Geocharidius balini Sokolov & Kavanaugh 2014

Size. Small to medium for genus (SBL range 1.22–1.34 mm, mean 1.27±0.040 mm, n=26). Habitus. Body form (Fig. 12F) moderately convex, elongate ovoid, general proportions (WE/SBL 0.38±0.008) and proportions of head (WH/WPm 0.72±0.013) and pronotum (WPm/WE 0.78±0.017) average for group. Color. Body brunneorufous, appendages testaceous. Microsculpture. Mesh pattern of irregularly isodiametric sculpticells present over all dorsal surfaces of head, pronotum and elytra. Proepisternum with evident microsculpture. Head (Fig. 1A). Mouthparts. Maxillae and labium (Fig. 5B) Prothorax. Pronotum (Fig. 1D) moderately transverse (WPm/LP 1.26±0.022), with lateral margins moderately constricted posteriorly (WPm/WPp 1.32±0.021). Posterior angles obtuse (110–120°). Widths between anterior and posterior angles of equal length (WPa/WPp 0.99±0.022). Elytra (Fig. 1G). Moderately convex, slightly depressed along suture, moderately narrow (WE/LE 0.64±0.018), without traces of striae. Humeri rounded, in outline forming right angle with longitudinal axis of body. Lateral margins convex, evenly divergent at basal third, evenly rounded to apex in apical third. Legs. Metatibia (Fig. 7F) Male genitalia. Median lobe (Fig. 13O) with shaft short and broad and apex of moderate size and rounded. Ventral margin greatly enlarged and convex, with numerous poriferous canals. Dorsal sclerites of internal sac of peculiar shape, in form of anastomosing short figs, connected in apical and basal thirds, pointed apically as a short blade. Right paramere long and narrow (Fig. 13Q). Left paramere with long and narrow apical constriction (Fig. 13P). Ring sclerite with handle almost rectangularly rounded, slightly asymmetrical (Fig. 16E). Female internal genitalia. Spermatheca sclerotized, fusiform with apical bulb enlargement, straight, with cornu long and nodulus short (Fig. 17E). Lengths of spermathecal gland and spermatheca equal. Spermathecal duct not coiled.