Difference between revisions of "Mocyta"

Revision as of 14:37, 16 March 2015

Taxonavigation

Ordo: Coleoptera
Familia: Staphylinidae

Name

Mocyta Mulsant & Rey, 1874 – Wikispecies link – Pensoft Profile

• MocytaFor synonymy, see Gusarov 2003^[1], Lohse et al. 1990^[2], Smetana 2004^[3]

Diagnosis

Mocyta may be distinguished from the other genera of Canadian Aleocharinae except for Acrotona Thomson and Strigota Casey, by having the pronotal hypomeron not visible in lateral view. From Acrotona and Strigota, as well as other aleocharine genera, it may be distinguished by the following combination of characters: antennae very thin and pale, in most specimens contrasting with body colour (Figs 3a–7a); pronotum glossy, moderately convex, broad and shield-shaped, widest at or near middle, with pubescence directed posteriad in midline or entire central section of disc (Fig. 6a) and posterolaterad at sides, pronotum is at least as broad as the base of the elytra but in most specimens broader (Figs 3a–7a); median lobe of aedeagus of a simple form, tubus ca. half length of median lobe, narrowly tapering and rounded apically in dorsal view (Figs 3d, 4c, 5c) and straight and narrow apically in lateral view (Figs 3b, c, 4b, 5b, 6b), internal sac structures inconspicuous, usually elongate and not strongly pronounced (Figs 3b–d, 4b, c, 6b); male tergite VIII truncate apically and without teeth and other secondary sexual characters (Figs 3e, 4d, 5i, 6c), sternite VIII with longer macrosetae than those of females (Figs 3f, 4e, 6d); spermatheca with capsule hemispherical, or elongate and sac-shaped with usually small apical invagination and short neck, stem thin and regularly or irregularly coiled posteriorly (Figs 3g, h, 4f, 5d–h, 6e–g).
The shape of the spermatheca in Acrotona is different, with a capsule more or less spherical and extended to a broad and long neck, often pitcher-shaped, and a stem that is broader than that in Mocyta, regularly coiled posteriorly and often with a swelled apex (Fig. 2f). Strigota may be easily distinguished from Mocyta and Acrotona by the basal line of the abdominal tergum VIII laterally joining the base of the tergum in both sexes (Figs 1d, g), while in other athetines the basal line is separated from the tergite base (Figs 3e, i). For illustrations, see also Gusarov (2003)^[1].

Key to Canadian species of the genus Mocyta

Taxon Treatment

• Klimaszewski, J; Webster, R; Bourdon, C; Pelletier, G; Godin, B; Langor, D; 2015: Review of Canadian species of the genus Mocyta Mulsant & Rey (Coleoptera, Staphylinidae, Aleocharinae), with the description of a new species and a new synonymy ZooKeys, (487): 111-139. doi

Images

Figures 1a–h. Strigota ambigua (Erichson): 1a habitus in dorsal view 1b median lobe of aedeagus in lateral view 1c median lobe of aedeagus in ventral view 1d male tergite VIII 1e male sternite VIII 1f spermatheca 1g female tergite VIII 1h female sternite VIII. Figures 1b–h after Gusarov 2003[1], slightly modified. Scale bar for habitus = 1 mm, and the remaining scale bars = 0.2 mm.  Figures 2a–h. Acrotona subpygmaea (Bernhauer): 2a habitus in dorsal view 2b median lobe of aedeagus in lateral view 2c median lobe of aedeagus in dorsal view 2d male tergite VIII 2e male sternite VIII 2f spermatheca 2g female tergite VIII 2h female sternite VIII. Scale bar for habitus = 1 mm, and the remaining scale bars = 0.2 mm.  Figures 3a–j. Mocyta amblystegii (Casey): 3a habitus in dorsal view 3b, c median lobe of aedeagus in lateral view 3d median lobe of aedeagus in dorsal view 3e male tergite VIII 3f male sternite VIII 3g–h spermatheca 3i female tergite VIII 3j female sternite VIII. Scale bar for habitus = 1 mm, and the remaining scale bars = 0.2 mm.  Figures 4a–h. Mocyta breviuscula (Brundin): 4a habitus in dorsal view 4b median lobe of aedeagus in lateral view 4c median lobe of aedeagus in dorsal view 4d male tergite VIII 4e male sternite VIII 4f spermatheca in lateral view 4g female tergite VIII 4h female sternite VIII. Scale bar for habitus = 1 mm, and the remaining scale bars = 0.2 mm.  Figures 5a–j. Mocyta fungi (Gravenhorst): 5a habitus in dorsal view 5b median lobe of aedeagus in lateral view 5c median lobe of aedeagus in ventral view 5d–h spermatheca 5i female tergite VIII 5j female sternite VIII. Scale bar for habitus = 1 mm, and the remaining scale bars = 0.2 mm.  Figures 6a–i. Mocyta luteola (Erichson): 6a habitus in dorsal view 6b median lobe of aedeagus in lateral view 6c male tergite VIII 6d male sternite VIII 6e–g spermatheca 6h female tergite VIII 6i female sternite VIII. Scale bar for habitus = 1 mm, and the remaining scale bars = 0.2 mm.  Figures 7a–g. Mocyta discreta (Casey): 7a habitus in dorsal view 7b median lobe of aedeagus in lateral view 7c male tergite VIII 7d male sternite VIII 7e spermatheca 7f female tergite VIII 7g female sternite VIII. Scale bar for habitus = 1 mm, and the remaining scale bars = 0.2 mm.  Figures 8a–h. Mocyta sphagnorum sp. n.: 8a male habitus in dorsal view 8b median lobe of aedeagus in lateral view 8c male tergite VIII 8d male sternite VIII 8e female habitus in dorsal view 8f spermatheca 8g female tergite VIII 8h female sternite VIII. Scale bar for habitus = 1 mm, and the remaining scale bars = 0.2 mm.

Other References

1. ↑ ^{1.0 1.1 1.2} Gusarov V (2003) Revision of some types of North American aleocharines (Coleoptera: Staphylinidae: Aleocharinae), with synonymic notes. Zootaxa 353: 1–134.
2. ↑ Lohse G, Klimaszewski J, Smetana A (1990) Revision of arctic Aleocharinae of North America (Coleoptera: Staphylinidae). The Coleopterists Bulletin 44: 121–202.
3. ↑ Smetana A (2004) Subfamily Aleocharinae Fleming, 1921. In: Löbl I Smetana A (Eds) Catalogue of Palaearctic Coleoptera, Vol. 2. Apollo Books, Stenstrup, 353–494.