Micridium proprium sp. n.

(Figs. 15, 37, 51, 87a/b, 94)

Habitus Fig. 15. Length 0.53 mm. Colour: yellow. Antennomeres 3–11 length 0.20 mm. Width across eyes 0.16 mm. Mentum narrowed towards base, submentum with 3 setae, Fig. 37. Pronotum without distinct linear or other depressions, length 0.14 mm, width 0.21 mm. Mesoventrum: keel narrow extending between mesocoxae onto the metaventrum, Fig. 51. Mesepiventra without clear reticulation, hind angles narrowly rounded, Fig. 51. Metaventrum: metepiventral sutures obliterated before reaching the posterior margin. Wings of usual ptiliid type.

Male: posterior intercoxal process of metaventrum with long fringe of short setae, Fig. 94. Aedeagus Fig. 87a/ b.

Female: Not known.

Etymology. From the Latin proprius meaning with personal characteristics.

Diagnosis. The fringe of setae on the posterior intercoxal process of the metaventrum distinguishes the males of this species.

Type data: Holotype: ♂, Bolivia, Santa Cruz dep., Santiago de Chiquitos, "env under El Mirador ", 693m, 5.xii 2013, S. 18°19'10" E.59°34'16", sifting dry litter, Winkler app. extr., P. Baňař lgt. (UASC). Pinned on a piece of clear acetate as a disarticulated slide using Euparol as the mountant..