Leptusa

Park, Jong-Seok, Carlton, Christopher E. & Ferro, Michael L., 2010, Diversity and taxonomic review of Leptusa Kraatz (Coleoptera: Staphylinidae: Aleocharinae) from Great Smoky Mountains National Park, U. S. A., with descriptions of four new species, Zootaxa 2662, pp. 1-27 : 2-3

publication ID	https://doi.org/ 10.5281/zenodo.199052
DOI	https://doi.org/10.5281/zenodo.5020574
persistent identifier	https://treatment.plazi.org/id/03E2BD70-FFF8-8063-FF5C-2D95FA0E4F5D
treatment provided by	Plazi
scientific name	Leptusa
status

Treatment

Key to the Leptusa View in CoL species from the eastern United States

Note. Leptusa (E.) nanula ( Casey, 1893) and L. obscura Blatchley, 1910 are not included in the key. See discussion.

1. Head and pronotum with coarse setigerous punctures, distance between punctures less than their diameters ( Figs. 1 View FIGURE 1 g, 1j) ................................................................................................................................................................................. 2

- Head and pronotum with moderate sized setigerous punctures, distance between punctures more than their diameters ( Figs. 1 View FIGURE 1 b – 1f, 1h, 1i) ...................................................................................................................................................... 3

2. Antennomere 4 subquadrate ( Fig. 8 View FIGURE 8 a); elytra unicolored ( Fig. 1 View FIGURE 1 g); abdominal tergites VII – VIII with single median elongate tubercle ( Figs. 1 View FIGURE 1 g, 8f) ....................................................................................... L View in CoL . (Dysleptusa) pusio (Casey)

- Antennomere 4 longer than wide ( Fig. 11 View FIGURE 11 a); posterior part of elytra paler ( Fig. 1 View FIGURE 1 j); abdominal tergites VII – VIII with- out single median elongate tubercle ( Figs. 1 View FIGURE 1 j, 11f) ...................................................... L. (Ulitusa) cribratula (Casey) View in CoL

3. Elytra not more than 1.3 times longer than pronotum ( Figs. 1 View FIGURE 1 b, 1c, 1f) ..................................................................... 4

- Elytra at least 1.5 times longer than pronotum ( Figs. 1 View FIGURE 1 a, 1d, 1e, 1g – 1j)..................................................................... 8

4. Body length less than 2.5 mm; antennomere 4 subquadrate ( Fig. 7 View FIGURE 7 a); hind wings absent ......................................... 5

- Body length more than 2.5 mm; antennomere 4 longer than wide ( Figs. 3 View FIGURE 3 a, 4a); hind wings present ....................... 6

5. Body light reddish brown ( Klimaszewski et al. 2004: Fig. 9 View FIGURE 9 ); posterior margin of male abdominal tergite VIII without tubercles ( Klimaszewski et al. 2004: Fig. 49); flagellum approximately 2 times longer than length of median lobe ( Klimaszewski et al. 2004: Fig. 48) ............................................................. L. (Adoxopisalia) elegans Blatchley View in CoL

- Body brown ( Fig. 1 View FIGURE 1 g); posterior margin of male abdominal tergite VIII with tubercle ( Fig. 7 View FIGURE 7 f); flagellum as long as 1/2 length of median lobe ( Fig. 7 View FIGURE 7 k) ............................................................................... L. (Dysleptusa) View in CoL gimmeli n. sp.

6. Antennomere 4 transverse; hind wings absent ........................................................ L View in CoL . (Dysleptusa) smetanaiella Pace

- Antennomere 4 longer than wide; hind wings present ................................................................................................ 7

7. Antennomere 5 longer than wide ( Fig. 3 View FIGURE 3 a); carina on each side of surface of head incomplete (fading before attaining gular suture); mesoventrite with short carina...................................... L. (Adoxopisalia) pseudosmokyiensis View in CoL n. sp.

- Antennomere 5 subquadrate ( Fig. 4 View FIGURE 4 a); carina on each side of ventral surface of head complete (attaining gular suture); mesoventrite without carina..................................................................... L. (Adoxopisalia) smokyiensis Pace View in CoL

8. Head, pronotum and elytra opaque and velutinous...................................................................................................... 9

- Head, pronotum and elytra somewhat glossy ............................................................................................................. 11

9. Antennomere 5 subquadrate ( Fig. 5 View FIGURE 5 a); male abdominal tergites VII – VIII without single median elongate tubercle ( Fig. 5 View FIGURE 5 f) ........................................................................................................................ L. (Adoxopisalia) View in CoL stocksi n. sp.

- Antennomere 5 longer than wide ( Fig. 2 View FIGURE 2 a); male abdominal tergites VII – VIII with single median elongate tubercle ( Fig. 2 View FIGURE 2 f) ....................................................................................................................................................................... 10

10. Posterior margin of male abdominal tergite VIII without tubercle ( Fig. 2 View FIGURE 2 f); flagellum approximately twice length of median lobe ( Fig. 2 View FIGURE 2 j).................................................................................................... L. (Adoxopisalia) opaca Casey View in CoL

- Posterior margin of male abdominal tergite VIII with tubercles ( Klimaszewski et al. 2004: Fig. 45); flagellum at least 3 times longer than length of median lobe ( Klimaszewski et al. 2004: Fig. 44).................................................... ................................................................................................ L. (Adoxopisalia) pseudopaca Klimaszewski & Majka View in CoL

11. Abdominal tergite VI transverse (at least 1.7 times wider than long), posterior margin of abdominal tergite VIII emarginate ( Figs. 6 View FIGURE 6 f, 6h), male abdominal tergite VIII with single median elongate tubercle ( Fig. 6 View FIGURE 6 f) ................... 12

- Abdominal tergite VI subquadrate (less than 1.5 times wider than long), abdominal tergite VIII with rounded posterior margin ( Figs. 9 View FIGURE 9 f, 9h, 10f, 10h), male abdominal tergite VIII without median tubercle ( Figs. 9 View FIGURE 9 f, 10f)............... 13

12. Antennomere 4 subquadrate, 5 transverse ( Fig. 6 View FIGURE 6 a); carina on each side of ventral surface of head complete (attaining gular suture); posterior margin of male abdominal tergite VIII without tubercle ( Fig. 6 View FIGURE 6 f) ...................................... ................................................................................................................................. L. (Dysleptusa) carolinensis Pace View in CoL

- Antennomere 4 longer than wide, 5 subquadrate ( Klimaszewski et al. 2004: Fig. 12); carina on each side of ventral surface of head incomplete (fading before attaining gular suture); posterior margin of male abdominal tergite VIII with several tubercles ( Klimaszewski et al. 2004: Fig. 22)..................................... L. (Boreoleptusa) canonica Casey View in CoL

13. Mesoventrite not carinate; median lobe in dorsal view somewhat thick ( Pace 1989: Fig. 639), flagellum longer than 1/2 length of median lobe ( Fig. 9 View FIGURE 9 k) ......................................................................... L. (Eucryptusa) brevicollis Casey View in CoL

- Mesoventrite with short carina, reaching approximately 1/3 length of mesoventrite; median lobe in dorsal view slen- der ( Fig. 10 View FIGURE 10 l), flagellum shorter than 1/2 length of median lobe ( Fig. 10 View FIGURE 10 k) .................... L. (Eucryptusa) ferroi View in CoL n. sp.