Review and key to Nearctic Lathrolestes Förster (Hymenoptera: Ichneumonidae), with special reference to species attacking leaf mining tenthredinid sawflies in Betula Linnaeus (Betulaceae) Author Reshchikov, Alexey V. Author Soper, Anna Author Van, Roy G. text Zootaxa 2010 2614 1 17 journal article 10.5281/zenodo.197875 37700ed7-18f8-43ef-9252-c3ea87907bc2 1175-5326 197875 Lathrolestes mnemonicae ( Rohwer, 1914 ) Sympherta mnemonicae Rohwer, 1914 , Holotype , female, Falls Church, Virginia (SI). Lathrolestes mnemonicae ; Cushman, 1933 ; Carlson, 1979 In addition to the previous description of this species, we note that this species is rather close to the European L. clypeatus (Zetterstedt, 1838) . It differs from the latter species by a wider and shorter clypeus; pale apical margin of clypeus and maculae on the sides adjacent antenna; tarsal claws more strongly curved at apex, apical tooth longer than two preapical teeth ( Fig. 48 ). Ovipositors of both species are similar ( Fig. 24 ). There is variation in coloration in specimens from the CNC, which resemble L. clypeatus (Zetterstedt, 1838) . Most likely, L. mnemonicae ( Rohwer, 1914 ) is a Nearctic subspecies of L. clypeatus (Zetterstedt, 1838) . These two species are also similar in the hosts they attack, leafmining Lepidoptera of the family Eriocraniidae . Lathrolestes mnemonicae ( Rohwer, 1914 ) attacks Dyseriocrania auricyanea (Walsingham, 1882) and D. griseocapitella (Walsingham, 1898) ; L. clypeatus (Zetterstedt, 1838) attacks members of the genus Eriocrania .