Alaptus fusculus Walker, 1846

Alaptus fusculus Walker, 1846: 51 . Lectotype ♂ (NMID), designated by Graham, 1982: 194. TL: UK, England, near London. Marshall, 1873: 23 (catalogue) [P]; Dalla Torre, 1898: 428 (catalogue) [P]; Girault, 1908 [51]: 184 (list, comments) [P]; Enock, 1914: 46 (list) [P]; Kryger, 1950: 33 (good species), 34 (description, hosts) [P]; Thompson, 1958: 566 (host catalogue) [P]; Hincks, 1959: 141 (key), 144 (description, hosts, distribution) [P]; New, 1969: 185 (biology) [P]; Cheke, 1974: 107 (numerical response) [P]; Broadhead & Cheke, 1975: 767 (ecology) [P]; Cheke, 1977: 17 (grooming behavior) [P]; Bouček & Graham, 1978: 109 (checklist) [P]; Viggiani & Jesu, 1988: 1020 (distribution in Italy) [P]; Pagliano & Navone, 1995: 35 (Italy list) [P]; Baquero & Jordana, 2002: 79 (distribution, host associations) [P]; Viggiani, 2004: 61 (male genitalia) [P]; Huber et al., 2009: 292 (male genitalia) [P]; Pricop, 2009b: 123 (list) [P]; Pintureau, 2012: 31 (European list) [P]; Triapitsyn, 2015a: 218 (correction to Haliday collection list) [P]; Dale-Skey et al., 2016: 227 (checklist) [P]; Koponen & Triapitsyn, 2016: 2 (distribution) [P]; Triapitsyn, 2017: 15 (description, distribution, hosts).

Alaptus extremus Soyka, 1939a: 19 . Holotype ♀ (NHMW). TL: Netherlands, Valkenburg, St. Ignatius Jesuit College [Ignatiuskolleg]. Synonymy by Triapitsyn, 2017: 16.

Alaptus foersteri Soyka, 1939a: 18 . Lectotype ♀ (NHMW), designated by Triapitsyn, 2017: 16. TL: Poland, Wrocław, ulica Gajowicka [Breslau, Gabitzstrasse in original description]. Synonymy by Hincks, 1959: 144.

Alaptus magnus Cheke & Turner, 1973: 279 . Holotype ♀ (NHMUK). TL: UK, North Yorkshire Co., Harrogate. Synonymy by Triapitsyn, 2017: 16.

Alaptus novickyi Soyka, 1948: 72 . Holotype ♀ (NHMW). TL: Germany, Malchin, Jettchenshof [a farm ≈ 2.5 km N. of Mal- chin]. Synonymy by Triapitsyn, 2017: 16.

Distribution. Canada: ON. USA: AK, CA, FL, MA, SC, VA.