Notomicrus Sharp, 1882

Baca, Stephen M. & Short, Andrew Edward Z., 2021, Review of the New World Notomicrus Sharp (Coleoptera, Noteridae) I: Circumscription of species groups and review of the josiahi group with description of a new species from Brazil, ZooKeys 1025, pp. 177-201 : 177

Genus Notomicrus Sharp, 1882

Type species.

N. brevicornis Sharp, 1882. Designation by Guignot 1946: 115.

Diagnosis.

(1) Eyes present; (2) metacoxae and metaventrite fused, suture indistinct laterad of noterid platform; (3) noterid platform not extending anteriorly on to metaventrite; (4) protibia with loose rows of spines and setae, lacking large spur at apex and tight comb of small spines on distolateral margin and not expanded distally beyond protarsal insertion; (5) partial fusion of metafurca and metacoxae, not forming complete ring; (6) mid-gular apodeme absent ( Beutel and Roughley 1987; Miller 2009); (7) female laterotergite short, posteriorly extending beyond base of gonocoxae ( Miller 2009).

Remarks.

As noted by Miller (2009) and others ( Manuel 2015 and citations therein), the characters that define Notomicrus are primarily plesiomorphic with the exception of the fusion of the metacoxae and metaventrite. Speonoterus Spangler is also defined by the above character combination, except absence of eyes. Spangler (1996) also noted that the distance from the anterior terminus of the noterid platform (metacoxal lamellae) to the mesocoxal cavities is shorter in Speonoterus , less than the width of the mesocoxal cavities, whereas in Notomicrus , this distance is greater than the width of the mesocoxal cavities (See Spangler 1996; Manuel 2015). Notomicrine species are all notably small (ca. 1.0-1.8 mm). Characters listed above without specific citation have been more common in use for defining Notomicrus (e.g. Sharp 1882; Young 1978; Buetel and Roughley 1987); see Miller (2009) and Manuel (2015) for details.