Lathrolestes mnemonicae ( Rohwer, 1914 )

Reshchikov, Alexey V., Soper, Anna & Van, Roy G., 2010, Review and key to Nearctic Lathrolestes Förster (Hymenoptera: Ichneumonidae), with special reference to species attacking leaf mining tenthredinid sawflies in Betula Linnaeus (Betulaceae), Zootaxa 2614, pp. 1-17 : 14

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 .

Figures

FIGURE 41 – 52. 41 – 50. Tarsal claws: 41, L. syringe * Reshchikov; 42, L. barroni * Reshchikov; 43, L. fissus * Reshchikov. (*); 44 – 52. Tarsal claws: 44, L. thomsoni * Reshchikov; 45, L. soperi * Reshchikov; 46, L. platynus (Davis); 47, L. nigricollis (Thomson); 48, L. mnemoniacae (Rohwer) (from Barron, 1994); 49, L. dentatus Barron (from Barron, 1994); 50, L. clavipes Barron (from Barron, 1994); Figures 51, 52. Last tarsal articles: 51, L. nigricollis (Thomson); 52, L. zeugophorea Barron. (*) Holotype ..

FIGURE 21 – 40. 21 – 30. Apex of gaster, showing last tergum and sternite, ovipositor and sheaths. Scale 0.50 mm. 21, L. bulbus Barron; 22, L. periclistae Barron; 23, L. luteolator (Gravenhorst); 24, L. mnemonicae (Rohwer);. 25, L. aquilus Barron; 26, L. convexus Barron; 27, L. gibbosus Barron; 28, L. pictus Cushman; 29, L. protrusus Barron; 30, L. truncatus (Provancher). Figures 31 – 36. Propodeum, dorsal view. 31, L. syringe * Reshchikov; 32, L. barroni * Reshchikov; 33, L. fissus * Reshchikov; 34, L. thomsoni * Reshchikov; 35, L. soperi * Reshchikov; 36, L. zeugophorea Barron; Figures 37 – 40. First metasomal tergum: 37, L. fissus * Reshchikov; 38, L. thomsoni * Reshchikov; 39, L. soperi * Reshchikov; Male subgenital plate: 40, L. fissus * Reshchikov. (*) Holotype.