Stethusa spuriella\according to Klimaszewski et al 2016
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Ordo: Coleoptera
Familia: Staphylinidae
Genus: Stethusa
Name
Stethusa spuriella (Casey) – Wikispecies link – Pensoft Profile
- Atheta (Stethusa) spuriella Casey, 1910: 8. As Stethusa: Gusarov 2003b[1]: 239; Brunke et al. 2012[2]: 181.
Diagnosis
This species may be distinguishable from two other Nearctic Stethusa species by the following combination of characters (Gusarov 2003b[1]): Stethusa spuriella differs from Stethusa dichroa (Gravenhorst) in a smaller body size (length 2.1–2.5 mm), the lack of sub-basal impressions of the terminal antennal article (Fig. 101), the lack of the distal spines of the internal sac (Figs 102, 103); the shape of the spermatheca (Fig. 108); and the lack of a female accessory sclerite. Stethusa spuriella differs from Stethusa klimschi (Bernhauer) in having a smaller body size, the bent apex of the median lobe in lateral view (Fig. 102), and a shorter spermatheca (Fig. 108).
Distribution
| Origin | Nearctic |
| Distribution | Canada: NL, ON; USA: DE, FL, GA, IN, MO, NY, OH, PA |
| New records | New provincial record; NEWFOUNDLAND: Barachois Pd. Prov. Pk., 48.483°N, 58.269°W, 11-VII-2011, mixed forest, pitfall trap, Heather Beck, (MUN) 1 female. |
| References | Casey 1910[3], Gusarov 2003b[1], Brunke et al. 2012[2] |
Bionomics
In Newfoundland, one female was captured in a pitfall trap in mixed forest. In Ontario, Stethusa spuriella appears to be a common species in both forested and open habitats, some specimens were captured on fungi (Brunke et al. 2012[2]). Adults were collected from May to August.
Comments
This species probably reaches its northernmost distribution limit in Newfoundland.
Taxon Treatment
- Klimaszewski, J; Langor, D; Bourdon, C; Gilbert, A; Labrecque, M; 2016: Two new species and new provincial records of aleocharine rove beetles from Newfoundland and Labrador, Canada (Coleoptera, Staphylinidae, Aleocharinae) ZooKeys, (593): 49-89. doi
Images
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![Figures 101–108. Stethusa spuriella (Casey): 101 habitus in dorsal view 102 median lobe of aedeagus in lateral view 103 median lobe of aedeagus in ventral view 104 male tergite VIII 105 male sternite VIII 106 female tergite VIII 107 female sternite VIII 108 spermatheca. Figures 102–108 after Gusarov (2003b)[1]. Scale bar of habitus = 1 mm; remaining scale bars = 0.2 mm.](/wiki/File:Zookeys-593-e8412-g014.jpg)
Other References
- ↑ 1.0 1.1 1.2 1.3 Gusarov V (2003b) A revision of the Nearctic species of the genus Stethusa. Zootaxa 239: 1–43.
- ↑ 2.0 2.1 2.2 Brunke A, Klimaszewski J, Dorval J, Bourdon C, Paiero S, Marshall S (2012) New species and distributional records of Aleocharinae (Coleoptera, Staphylinidae) from Ontario, Canada, with a checklist of recorded species. ZooKeys 186: 119–206. doi: 10.3897/zookeys.186.2947
- ↑ Casey T (1910) New species of the staphylinid tribe Myrmedoniini. Memoirs on the Coleoptera 1. New Era Printing Co., Lancaster, 184 pp.
