Included taxa
Hackman, W. (1952b). Contributions to the knowledge of Finnish spiders. Memoranda Societatis pro Fauna et Flora Fennica 27: 69-79. 
Species
| Species | Family | Page / figures | published as |
|---|---|---|---|
| Ceratinella brevipes | Linyphiidae | 75, f. 22 (f) | Ceratinella brevipes |
| Ceratinella brevis | Linyphiidae | 77, f. 23 (f) | Ceratinella brevis |
| Diplocephalus latifrons | Linyphiidae | 77, f. 10a-b, 19 (mf) | Plaesiocraerus latifrons |
| Diplocephalus picinus | Linyphiidae | 77, f. 9a-c, 17 (mf) | Savignia picina |
| Entelecara congenera | Linyphiidae | 75, f. 7a-b (mf) | Entelecara congenera |
| Entelecara erythropus | Linyphiidae | 76, f. 5 (m) | Entelecara erythropus |
| Entelecara media | Linyphiidae | 76, f. 6a-b (mf) | Entelecara media |
| Erigonella hiemalis | Linyphiidae | 77, f. 8a-b, 18 (mf) | Troxochrus hiemalis |
| Erigonella ignobilis | Linyphiidae | 77, f. 16 (f) | Troxochrus ignobilis |
| Horcotes strandi | Linyphiidae | 69, f. 1a-g (Dm) | Horcotes holmi |
| Micrargus subaequalis | Linyphiidae | 73, f. 4 (f) | Notocyba subaequalis |
| Microctenonyx subitaneus | Linyphiidae | 73, f. 3a-d (m) | Aulacocyba subitanea |
| Panamomops mengei | Linyphiidae | 76, f. 2a-d (m; misidentified per Miller, 1959: 43) | Panamomops sulcifrons |
| Pelecopsis elongata | Linyphiidae | 77, f. 11a-c, 21 (mf) | Lophocarenum elongatum |
| Tapinocyboides pygmaeus | Linyphiidae | 73, f. 13a-b (m, T from Silometopus) | Colobocyba antepenultima |
| Thyreosthenius parasiticus | Linyphiidae | 73, f. 15a-c (mf, S) | Thyreosthenius parasiticus |
| Trichoncus hackmani | Linyphiidae | 75, f. 14a-c (mf; misidentified per Denis, 1965c: 456) | Trichoncus saxicola |
| Trichopterna cito | Linyphiidae | 77, f. 12a-b, 20 (mf) | Trichopterna cito |
Genera
No genus found for this reference