Review of the family Vanhorniidae (Hymenoptera: Proctotrupoidea), with the description of two new species Author Abe, Junta Tokyo University Museum, 7 - 3 - 1 Hongo, Tokyo 113 - 0033 Japan Author Yamagishi, Kenzo 0009-0001-0322-5745 kentatsu@tg.commufa.jp Author Konishi, Kazuhiko Hokkaido University Museum, Kita 10 - jo, Nishi 8 - chome, Kita-ku, Sapporo, Hokkaido 060 - 0810 Japan text Zootaxa 2024 2024-09-13 5507 3 427 438 http://dx.doi.org/10.11646/zootaxa.5507.3.2 journal article 10.11646/zootaxa.5507.3.2 1175-5326 13757842 873ABA0C-039A-4B68-84AC-98E505D95A92 Vanhornia eucnemidarum Crawford, 1909 ( Figs. 1A–F ) Vanhornia eucnemidarum Crawford, 1909: 63–64 . Holotype (not examined): female; type locality: Maryland , USA . Diagnosis. Frontal transverse carina absent; apical margin of labrum straight. Scutoscutellar sulcus with five foveae; mesodiscrimen with about 10 strong foveae; median longitudinal carina on dorsal part of propodeum present, smooth area on postero-lateral part of propodeum present. Syntergite with longitudinal ridges, reaching to a maximum of 0.4 length of syntergite, touching first thyridium; antero-dorsal margin of syntergite almost straight. FIGURE 1A–F. Vanhornia eucnemidarum (USA, female). A, lateral habitus; B, ventral view of head, arrow indicates apical margin of labrum; C, dorsal view of pronotum and mesothorax; D, ventral view of mesodiscrimen; E, dorsal view of propodeum; F, antero-dorsal view of metasoma. Scale bars: A—2.0 mm, B–F—0.2 mm. Specimen examined. Non-types. Canada : 1f, Gatineau Park , Quebec , 16 VII 1991 . K. Yamaghishi (ELMU); 1f, Ontario , E. Griffith , 7mi , 19 VII 1940 , B. E. Cooper (ELMU). USA : 1f ( 15–21 V 2011 ), 4f ( 22–28 V 2011 ), and 2f ( 29 V –4 VI 2011 ), VA, Fairfax Co. , Holmes Run ~1/ 4mi NE, jct, Gallows Rd & I-495, 38°50’N , 77°12’W , MT , D. R. Smith ( SEHU ); 1f, VA, Prince William Co. , Bull Run Mtns , Chestnut Ridge Trail , 38°49.6’N , 77°42.4’W , MT , 25 VI–7 VII 2011 , D. R. Smith ( SEHU ); 2f, VA, Fairfax Co. near Annandale , MT , 11 VI 1988 , David R. Smith ( NSMT ) . Host. Isorhipis ruficornis (Say, 1823) ( Muona 2021 ) . Distribution. Canada ( Hogan et al. 2019 ), USA ( Timokhov & Belokobylskij 2020 ). Remarks. This species was erroneously recorded from South Korea ( Choi & Lee 2012 ). We examined the voucher specimen deposited in YNU and identified it as V. yurii (as preliminary suggested by Timokhov & Belokobylskij, 2020 ). Thus, V. eucnemidarum is not part of the vanhorniid fauna of South Korea .