Micridium inornatum, 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 : 244

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.6045207
persistent identifier	https://treatment.plazi.org/id/03E64B08-E323-FFFF-8585-5C7AFC2EEFCA
treatment provided by	Plazi (2017-03-10 08:26:22, last updated 2024-11-26 07:04:06)
scientific name	Micridium inornatum
status	sp. nov.

Treatment

Micridium inornatum View in CoL sp. n.

( Figs. 18 View FIGURES 17 – 32 , 47 View FIGURES 47 – 60 , 80 View FIGURES 72 – 81 )

Antennomeres 3–11 length 0.26 mm, 4–8 elongate, narrowed towards base. Width across eyes 0.22 mm. Mentum lateral margins almost parallel with slight medial insinuations, submentum with 3 setae. Pronotum without sculpture or depressions, sides evenly rounded, hind angles almost obscured, length 0.17 mm, width 0.28 mm, Fig. 18 View FIGURES 17 – 32 . Scutellum without any distinctive features. Mesoventrum: keel between mesocoxae wide and flattened, Fig. 47 View FIGURES 47 – 60 . Mesepiventra with distinct reticulation, Fig. 47 View FIGURES 47 – 60 . Mesocoxae widely separated, Fig. 47 View FIGURES 47 – 60 . Metaventrum: metepiventral sutures reaching midpoint only, posterior intercoxal process straight between lateral points. Wings of usual ptiliid type.

Male: not known.

Female: spermatheca Fig. 80 View FIGURES 72 – 81 .

Etymology. After the smooth appearance of the pronotum lacking linear depressions.

Diagnosis. The wide separation of the mesocoxae will quickly separate this species from all others except johnsoni and elegans .

Type data: Holotype: ♀, Bolivia, Cochabamba, BOL / Nov 2013/03. ca 8km E of Villa Tunari, sifting rotten wood, Winkler app. extr., GPS 23 S. 16° 59' 12" E. 65° 20' 47", 298m, 22.xi.2013. P. Baňař lgt. ( UASC). Pinned on a small piece of clear acetate as a disarticulated slide using Euparal as the mountant . Paratype: ♀, same data as holotype ( MMBC); the specimen was found with the elytra missing.

Figures

FIGURES 17 – 32. Micridium pronotums. 17. M. quadridens sp. n. x 605. 18. M. inornatum sp. n. x 590. 19. M. boliviense sp. n. x 625. 20. M. newtoni sp. n. x 695. 21. M. foveatum sp. n. x 830. 22. M. johnsoni sp. n. x 790. 23. M. elegans sp. n. x 810. 24. M. thayerae sp. n. x 650. 25. M. halidaii (Matthews) x 770. 26. M. hilli (Johnson) x 740. 27. M. oweni sp. n. x 575. 28. M. attenboroughi sp. n. x 675. 29. M. angulicolle (Fairmaire). 30. M. rhodeanum (Casey) 31. M. vittatum Motschulsky 32. M. lineatum Le Conte.

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.

FIGURES 72 – 81. Micridium spermathecae. 72 a / b. M. attenboroughi sp. n. 73. M. boliviense sp. n. 74. M. elegans sp. n. 75. M. foveatum sp. n. 76. M. halidaii (Matthews) (may have been broken or distorted in preparation). 77 a / b. M. johnsoni sp. n. 78. M. hilli (Johnson) 79. M. thayerae sp. n. 80. M. inornatum sp. n. 81. M. newtoni sp. n.