Myrmedonota Cameron , 1920, Cameron, 1920

Maruyama, Munetoshi, Patrick, Brian & Klimaszewski, Jan, 2008, First record of the genus Myrmedonota Cameron (Coleoptera, Staphylinidae) from North America, with descriptions of two new species, Zootaxa 1716, pp. 35-43: 36

publication ID 10.5281/zenodo.181016

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Myrmedonota Cameron , 1920


Genus Myrmedonota Cameron, 1920  

See, Kistner (2003) for references, list of species, and key to species. Type species: Myrmedonota cingulata Cameron, 1920   , by monotypy.

Diagnosis. This genus is characterised and distinguished from the other lomechusine genera by a combination of the following character states: 1) body surface finely punctated; 2) head with occipital suture; 3) pronotum transverse,> 1.5 wider than long; 4) setation on abdomen sparse to moderate; 5) cardo of maxilla covers bases of stipes and lacinia (Fig. 3); 6) lacinia extremely narrowed and parallel-sided (Fig. 3); 7) mentum almost as long as wide (Figs. 4, 13); 8) apodeme of labium with medial projection (Figs. 5, 14); 9) 1 st segment of labial palpus longer than 2 nd segment (Figs. 5, 14); 10) each lobe of ligula with 2 setulae (Figs. 5, 14).

Comments. Myrmedonota   is placed in the subtribe Myrmedoniina   of the tribe Lomechusini   based on the combination of the following character states: elongated lacinia; mesoventral process shorter than metaventral process; tarsal formula 4, 5, 5; base of capsule of aedeagal median lobe partially covers the compressor plate.

This is the first record of Myrmedonota   from North America. The diagnosis is based on an examination of the type species M. cingulata Cameron, 1920   (2 ɗɗ and 2 ΨΨ, MALAYSIA: Selangor, Ulu Gombak, 8–15 VI 2005, coll. M. Maruyama, by flight interception traps); the present new species, and the original descriptions of M. papyriomyrmecis Kistner, 2003   and M. termitophila Bourguignon & Roisin, 2006   .

In North America, the members of this genus are similar to those of Pella   in general appearance, but can be distinguished by the small body size (in Pella   ,> 3.5 mm) and the mouthpart character states 5) to 10) in the above diagnosis as outlined in the modified key below. This genus is keyed out as Pella   in the key of Klimaszewski et al. (2005, pp. 707–710). In Ashe’s (2001, pp. 310–311) “Key to the Nearctic genera of Lomechusini   ”, Pella   and Myrmedonota   are keyed out to Zyras   .