Leptothorax muscorum
From Collingwood (1979) [1]
This species is similar to L. acervorum but smaller and more .slender. In Scandinavia, it Is restricted to sheltered valleys in woodland areas where it nests in stony banks, tree stumps or under bark. Its habits are similar to those of L. acerwrum with small colonies having one or occasionally two queens. Males and alate queens are found in July and August.
References
- C. A. Collingwood, The Formicidae (Hymenoptera) of Fennoscandia and Denmark, vol. 8. Klampenborg, Denmark: Scandinavian Science Press Ltd., 1979, p. 156.
From Collingwood (1979) [1]
Worker. Pale brown to brown with antennal clubs and head often slightly darker. Propodeal spines short but distinct. General appearance more slender than L. acervorvm. Head striate, alitrunk rugose and gaster smooth. Appendage hairs few and adpressed. Clypeus in some Scandinavian series have a distinct median concavity as described for L. gredleri Mayr (Buschinger, 1966) but they are not otherwise different from the typical species. Length: 2.4-3.2 mm.
Queen. As worker, normally darker. Length: 2.7-3.2 mm.
Male. Brownish black; occasional semi-erect hairs on tibiae but much shorter and less profuse than in L. acermrum. Antennae 12 segmented with very short scape.
References
- C. A. Collingwood, The Formicidae (Hymenoptera) of Fennoscandia and Denmark, vol. 8. Klampenborg, Denmark: Scandinavian Science Press Ltd., 1979, p. 156.