Taxa included

Atkinson, G. F. (1886). Descriptions of some new trapdoor spiders; their nests and food habits. Entomologica Americana 2: 109-117, 128-137.

Taxon
Nidivalvata Atkinson, 1886 (Antrodiaetidae) 129, type Nidivalvata marxi Atkinson, 1886; gender feminine Original description
Antrodiaetus unicolor (Hentz, 1842) (Antrodiaetidae) 130, (Df) [urn:lsid:nmbe.ch:spidersp:054753], Nidivalvata angustata
Antrodiaetus unicolor (Hentz, 1842) (Antrodiaetidae) 130, pl. 5, f. 8-10, 13, 23 (Df) [urn:lsid:nmbe.ch:spidersp:054755], Nidivalvata marxii
Myrmekiaphila Atkinson, 1886 (Euctenizidae) 131, type Myrmekiaphila foliata Atkinson, 1886; gender feminine Original description
Myrmekiaphila foliata Atkinson, 1886 (Euctenizidae) 132, pl. 5, f. 6-7, 12, 14, 22 (Df), Myrmekiaphila foliata Original description
Ummidia carabivora (Atkinson, 1886) (Halonoproctidae) 133, pl. 5, f. 1-4 (Df), Pachylomerus carabivorus Original description
Ummidia carabivora (Atkinson, 1886) (Halonoproctidae) 133, pl. 5, f. 21 (D), Pachylomerus quadrispinosus
Ummidia carabivora (Atkinson, 1886) (Halonoproctidae) 134, (Df) [urn:lsid:nmbe.ch:spidersp:000611], Pachylomerus carabivorus emarginatus
Ummidia audouini (Lucas, 1836) (Halonoproctidae) 136, pl. 5, f. 5 (Df), Pachylomerus turris

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