ICHNEUM02iriD SUBFAMILY XEORHACODINAE— CUSHMAN 525 

 KEY TO THE SPECIES OF NEORHACODINAE 



1. Tergites 1-3 with distinct transverse fiirrows 2 



Tergites 1-3 without transverse furrows (Brazil). 



Roinaniella exsulcatus, new genus and species 



2. Antenna subclavate, penultimate joint as thick as long; ovipositor barely- 



extending bej-ond apex of abdomen, sheath hardly as long as first tergite 



(Arizona) Neorhacodes brevicauda, new species 



Antenna filiform, penultimate joint distinctly longer than thick; ovipositor 

 strongly exserted, sheath half or more as long as abdomen 3 



3. Sheath of ovipositor half as long as abdomen (Europe). 



Neorhacodes euslini (Ruschka) 

 Sheath three-fourths as long as abdomen (Colorado). 



Neorhacodes longicauda, new species 



Genus NEORHACODES Hedicke 



Rhacodes Ruschka, Archiv fiir Naturg., vol. 88, Abt. A, Heft 5, p. 138, fig. 8, 

 (June) 1922. — Schmiedeknecht, Die Hymenopteren Nord- und Mitteleuro- 

 pas, p. 359, fig. 61, 1930. (Preoccupied by RJiacodes Koch, 1856.) 



Neorhacodes Hedicke, Deutsche Ent. Zeitschr., p. 427, 1922. — Handlissch, Hand- 

 buch der Entomologie, vol. 3, p. 742, 1925. — Fahkingei{, Opuscula bracono- 

 logica, vol. 1 (Lief. 1), p. 16, 1925. — Handliksch, Handbuch der Zoologie, 

 vol. 4, Insecta 2, p. 962, fig. 1057, 1933. — Fahringek, Opuscula braconologica, 

 vol. 4 (Lief. 1-3), p. 3, 1935. 



l^eorliacoiles (Ruschka) Roman, Ent. Tidskr., vol. 44, Heft 3-4, p. 170, fig. 1, 

 1923. 



Abdomen longitudinally striate or striato-shagreened, tergites 1-3 

 witli deep transverse furrows, first tergite without longitudinal fur- 

 rows apically; differing in these respects from the new genus Ro- 

 maniella. 



NEORHACODES ENSLINI (Ruschka) 



Rhacodes enslini Ruschka, Archiv fiir Naturg., vol. 88, Abt. A, Heft 5, p. 138, 

 fig. 8. 1922. — ScHMiEDEKNECHT, Die Hymenopteren Nord- und Mitteleuropas, 

 p. 359, fig. 61, 1930. 



Neorhacodes enslini (Ruschka) HEa)iCKE, Deutsche Ent. Zeitschr., p. 427, 1922. — 

 Roman, Ent. Tidskr., vol. 44, Heft 3-4, p. 170, fig. 1, 1923.— Handliesch, 

 Handbuch der Entomologie, vol. 3, p. 742, 1925. — Watekston, Entomologist, 

 vol. 62, p. 97, fig. 1, 1929. — Handlirsch, Handbuch der Zoologie, vol. 4, 

 Insecta 2, p. 962, fig. 1057, 1933. — Fahbinger, Opuscula braconologica, vol. 4 

 (Lief. 1-3), p. 3, 1935. 



During his vi.sit to Washington in 1928 Waterston showed me the 

 specimen on which his note was based. At that time I had no other 

 specimen of the genus to compare with it for specific differences. The 

 original and only description of enslini fits the new species described 

 belovv' as longicauda, very closely except in the shorter ovipositor, the 

 basally smoother third and fourth tergites, and the basally palo 

 flagellum and paler legs. 



All (3) of the specimens of enslini that have been recorded were 

 associated with the minute wasp Syiloinena troglodytes Lind. 



