Micridium boliviense, 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 : 240-241

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.6045189
persistent identifier	https://treatment.plazi.org/id/03E64B08-E32F-FFFC-8585-5E68FB71EA08
treatment provided by	Plazi (2017-03-10 08:26:22, last updated 2024-11-26 07:04:06)
scientific name	Micridium boliviense
status	sp. nov.

Treatment

Micridium boliviense View in CoL sp.n.

( Figs. 11 View FIGURES 1 – 14 , 19 View FIGURES 17 – 32 , 35 View FIGURES 33 – 41 , 49 View FIGURES 47 – 60 , 73 View FIGURES 72 – 81 )

Habitus Fig. 11 View FIGURES 1 – 14 . Length 0.63 mm. Colour: dusky yellow, head a little darker, pubescence, legs and antennae pale yellow. Antennomeres 3–11 length 0.20 mm, 4–8 ovoid. Head with group of shallow depressions on disc. Width across eyes 0.18 mm. Mentum narrowed to base, sides straight, submentum with 3 setae, Fig.35 View FIGURES 33 – 41 . Pronotum with two distinct linear depressions in basal half converging anteriorly, sides evenly rounded, length 0.16 mm, width 0.23 mm, Fig. 19 View FIGURES 17 – 32 . Elytra widest at middle, length 0.36 mm, width 0.27 mm. Mesoventrum: keel narrow between mesocoxae, Fig. 49 View FIGURES 47 – 60 . Mesepiventra without clear reticulation, evenly rounded to mesocoxae, Fig. 49 View FIGURES 47 – 60 . Metaventrum: metepiventral sutures not reaching posterior margin, posterior intercoxal process shallowly concave. Wings absent.

Male: not known.

Female: spermatheca in the form of the number 8, Fig. 73 View FIGURES 72 – 81 .

Etymology. Named after the country where the insect was found.

Diagnosis. The form of the pronotal linear depressions, the absence of wings, and the shape of the spermatheca distinguish the species.

Type data: Holotype: ♀, Bolivia, Santa Cruz dep. W. Amboro NP Barientos, BOL / Nov 2013/13, 1583m, 29.xi, sifting litter palms, S. 18° 06' 11" E. 63° 48' 09", Winkler app. extr. P. Baňař lgt. ( UASC) .

Figures

FIGURES 1 – 14. Micridium habitus. 1. M. angulicolle (Fairmaire) 2. M. halidaii (Matthews) 3. M. vittatum Motschulsky 4. M. lineatum Le Conte 5. M. rhodeanum (Casey) 6. M. hilli (Johnson) 7. M. johnsoni sp. n. 8. M. elegans sp. n. 9. M. oweni sp. n. 10. M. attenboroughi sp. n. 11. M. boliviense sp. n. 12. M. newtoni sp. n. 13. M. foveatum sp. n. 14. M. thayerae sp. n. 15. M. proprium sp. n. 16. M. quadridens sp. n.

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 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.

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.