Micridium proprium, 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 : 250

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.6045220
persistent identifier	https://treatment.plazi.org/id/03E64B08-E339-FFE5-8585-59D9FC23EAFE
treatment provided by	Plazi (2017-03-10 08:26:22, last updated 2024-11-26 07:04:06)
scientific name	Micridium proprium
status	sp. nov.

Treatment

Micridium proprium View in CoL 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 View FIGURES 33 – 41 . 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 View FIGURES 47 – 60 . Mesepiventra without clear reticulation, hind angles narrowly rounded, Fig. 51 View FIGURES 47 – 60 . 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..

Figures

FIGURES 33 – 41. Micridium mentums. 33. M. oweni sp. n. x 1420. 34. M. attenboroughi sp. n. x 1840. 35. M. boliviense sp. n. x 1280. 36. M. elegans sp. n. x 1320. 37. M. proprium sp. n. x 2360. 38. M. quadridens sp. n. x 1900. 39. M. johnsoni sp. n. x 1600. 40. M. foveatum sp. n. x 1220. 41. M. thayerae sp. n. x 1160.

FIGURES 47 – 60. Micridium mesoventra. 47. M. inornatum sp. n. x 540. 48. M. quadridens sp. n. x 710. 49. M. boliviense sp. n. x 695. 50. M. attenboroughi sp. n. x 870. 51. M. proprium sp. n. x 920. 52. M. newtoni sp. n. 53. M. johnsoni sp. n. x 655. 54. M. thayerae sp. n. x 860. 55. M. halidaii (Matthews) x 615. 56. M. oweni sp. n. x 585. 57. M. elegans sp. n. x 705. 58. M. hilli (Johnson) x 760. 59. M. foveatum sp. n. x 1300. 60. M. rhodeanum (Casey) x 545.