14 Trioxys — Monoctonus. 



breTicornis Hal. — Q 5 — Eur. : Britannia, Suecia. 



Aphidius (Trioxys) brevicornis Haliday, Entom. Magaz. I. 1833 p. 491 n. 20, Q. 



Aphidius (Trioxys) brevicornis Thomson, Opusc. entom. P. 20. 1895 p. 2336 n. 15, Q. 



Trioxys brevicornis Marshall, Spec. Hymen. Europe P. 55. 1896 V. p. 551, Q i^. 

 centaureae Hal. — S (5 — Eur.: Britannia. 



Aphidius (Trioxys) centaureae Haliday, Entom. Magaz. I. 1833 p. 490 n. 15, Q. 



Trioxys centaureae Marshall, Spec. Hymen. Europe P. 55. 1896 V. p. 555, Q <^. 

 cerasapWs Fitch — Am. : New York. 



Trioxys cerasaphis A. Fitch, Trans. New York State Agric. Soc. XIV. 1854 p. ? 



Trioxyg cerasaphis A. Fitch, l^t & 2^ Rep. Insects New York 1856 p. 138. 



Trioxys cerasaphis Thomas, 8*^ Rep. State Entomol. Illinois f. 1878. 1879 p. 176. 

 compressicornis Kuthe — 2 — Eur.: Islandia. 



Trioxys compressicornis Ruthe, Stettin. entom. Zeitg. XX. 1859 p. 314 n. 21, Q. 

 fnscatus Cress. — Am. : Cuba. 



Trioxys fuscatus Cresson, Proc. Entom. Soc. Philadelphia IV. 1865 p. 89. 

 heraclei Hal. — Q <$ — Eur. : Britannia, Germania; As.: Batavia. 



Aphidius (Trioxys) heraclei Haliday, Entom. Magaz. I. 1833 p. 490 n. 11, Q ^. 



Aphidius obsoletus Wesmael, Nouv. mem. acad. sc. Bruxelles IX. 1835 p. 83 n. 5, $ ; T.l F.12. 



Aphidius obsoletus Ratzeburg, Ichneum. d. Forstinsect. II. 1848 p. 58 n. 1, Q (5; T.2 F.27. 



Aphidius obsoletus Ratzeburg, Ichneum. d. Forstinsect. IH. 1852 p. 60 n. 1. 



Trioxys heraclei Forster, Verh. naturh. Ver. preuss. Rheinl. XIX. 1862 p. 249. 



Trioxys heraclei Marshall, Spec. Hymen. Europe P. 55. 1896 V. p. 552, § r^. 

 lethifer Hal. — Q — Eur. : Britannia. 



Aphidius (Trioxys) letifer Haliday, Entom. Magaz. I. 1833 p. 491 n. 18, Q. 



Trioxys lethifer Marshall, Spec. Hymen. Europe P. 55. 1896 V. p. 557, Q. 

 minutus Hal. — Q — Eur.: Britannia. 



Aphidius (Trioxys) minutus Haliday, Entom. Magaz. I. 1833 p. 491 n. 19, Q. 



Trioxys minutus Marshall, Spec. Hymen. Europe P. 55. 1896 V. p. 556, Q. 

 pallidus Hal. — Q S — Eur. : Britannia, Suecia. 



Aphidius (Trioxys) pallidus Haliday, Entom. Magaz. I. 1833 p. 489 n. 13, Q. 



Aphidius (Trioxys) pallidus Thomson, Opusc. entom. P. 20. 1895 p. 2335 n. 14, Q ^. 



Trioxys pallidus Marshall, Spec. Hymen. Europe P. 55. 1895 V. p. 557, Q. 

 popnlaphis Fitch — Am.: New York. 



Trioxys populaphis A. Fitch, Trans. New York State Agric. Soc. XIV. 1854 p. ? 



Trioxys populaphis A. Fitch, l^t & 2^ Rep. Insects New York 1856 p. 137. 



Trioxys populaphis Thomas, 8ti Rep. State Entomol. Illinois f. 1878. 1879 p. 176. 

 rhagii Ashm.i) — Q — Am. : New Jersey. 



Trioxys rhagii Ashmead, Proc. U. St. Nat. Mus. 1888 p. 670, Q. 



MONOCTONUS 



Haliday, Entom. Magaz. I. 1833 p. 261 & 487. 

 fxoros; solus; xreiyta, neco. 

 Synon.: Aphidius Haliday. 

 caricis Hal. — Q S ~ Eur. : Islandia, Britannia, Suecia. 



Aphidius (Monoctonus) caricis Haliday, Entom. Magaz. I. 1833 p. 261 & 488 n. 11, Q (J. 

 Monoctonus caricis Ruthe, Stettin. entom. Zeitg. XX. 1859 p. 314 n. 22, Q ^. 

 Monoctonus caricis Forster, Verh. naturh. Ver, preuss. Rheinl. XIX. 1862 p. 248. 

 Aphidius (Monoctonus) caricis Thomson, Opusc. entom. P. 20. 1895 p. 2334 n, 8, Q (J. 

 Monoctonus caricis Marshall, Spec. Hymen. Europe P. 55. 1896 V. p. 549, Q (5. 



1) Col. : Rhagium lineatum (Ashmead). 



