Micridium oweni, Darby, Michael, 2017

Darby, Michael, 2017, Taxonomic review of the genera Micridium Motschulsky, 1869 and Micridina Johnson, 1969 (Coleoptera: Ptiliidae) with eleven new species including the first records from South America and Madagascar, Zootaxa 4242 (2), pp. 233-254 : 248-249

publication ID	https://doi.org/ 10.11646/zootaxa.4242.2.2
publication LSID	lsid:zoobank.org:pub:0DD1868D-4EF5-4FB7-AEE9-372644800A79
DOI	https://doi.org/10.5281/zenodo.6045218
persistent identifier	https://treatment.plazi.org/id/03E64B08-E327-FFE4-8585-5F08FD95E92F
treatment provided by	Plazi
scientific name	Micridium oweni
status	sp. nov.

Treatment

Micridium oweni View in CoL sp.n.

( Fig. 9 View FIGURES 1 – 14 , 27 View FIGURES 17 – 32 , 33 View FIGURES 33 – 41 , 56 View FIGURES 47 – 60 , 67 View FIGURES 61 – 71 )

Habitus Fig. 9 View FIGURES 1 – 14 . Length 0.54 mm. Colour: brown, legs and antennae yellow. Antennomeres 3–11 length 0.21 mm, 5– 8 elongate. Width across eyes 0.16 mm. Mentum narrowed towards base, submentum with 3 setae, Fig. 33 View FIGURES 33 – 41 . Pronotum widest medially and with two distinct linear depressions narrowed anteriorly and reaching +/– 3/4 the length of the sclerite, length 0.16 mm, width 0.23 mm, Fig. 27 View FIGURES 17 – 32 . Elytra fused, length 0.35 mm, width 0.26 mm. Mesoventrum: keel narrow between mesocoxae extending on to the metaventrum, Fig 56 View FIGURES 47 – 60 . Mesepiventra: reticulation absent, hind angles rounded, Fig. 56 View FIGURES 47 – 60 . Metaventrum: metepiventral sutures reaching to posterior margin, Fig. 67 View FIGURES 61 – 71 ; posterior intercoxal process without setal fringe. This species is apterous.

Etymology. Named after Professor John Owen, the UK Coleopterist who died in 2016 and was very helpful to the writer.

Diagnosis. The length of the pronotal depressions and of the antennae distinguish this apterous species. Type data: Holotype: sex unknown (no genitalia were detected in the dissection], Madagascar, Ambohitantely Spec. Res., ABT. Sept.2011/10, 2.ix.2011, S. 18°10'63.9" E. 47°17'22.4", 1518m, sifting forest litter by waterfall, Winkler app. extraction, L.S.Rahanitriniaina lgt. ( BMNH). Pinned on a piece of clear acetate as a disarticulated slide using Euparal as the mountant.