Trachionus Haliday, 1833

Godfray, Charles J. & Achterberg, Cornelis Van, 2024, Annotated Checklist of the European Dacnusini and the Dapsilarthra genus group of the Alysiini (Hymenoptera: Braconidae, Alysiinae), Zootaxa 5513 (1), pp. 1-73 : 60

Trachionus Haliday, 1833

Type species: mandibularis Nees

AENONE Curtis, 1837 preocc. (type species: mandibularis Nees )

AENONE Haliday, 1838 preocc. (type species: mandibularis Nees )

OENONE Haliday, 1839 preocc. (type species: mandibularis Nees )

SYMPHYA Förster, 1863 (type species: mandibularis Nees )

ANARMUS Ruthe, 1882 (type species: mandibularis Nees )

Hosts: Hypothesis— Parasitoids of Phytobia spp. ( Agromyzidae ) in bark cambium. Evidence —Literature records (Taxapad) plus specimens in NHM & NMS. Comment —Records from Cerodontha ( Agromyzidae ) almost certainly incorrect (part of genus used to be called Phytobia ). Thought to oviposit into host egg ( Greene 1914).

Literature: Griffiths I-858; Tobias (1986); van Achterberg (1997); Cui et al. (2015); Fischer (1994); Perepechayenko (2000a) (in Russian but key to European females in English).

Notes: Generic synonymy follows van Achterberg (1997). Closely related to Epimicta (q.v.). 13 species in genus ( Cui et al. 2015).

Subgenus Trachionus Haliday, 1833

kotenkoi (Perepechayenko, 1997)

Literature: Perepechayenko (1997a); Perepechayenko (2000a).

mandibularis (Nees, 1816; Sigalphus )

Hosts: Hypothesis— Parasitoid of Phytobia cerasiferae , a cambial miner of Prunus sp. ( Rosaceae ). Evidence — Pitcher (1956); NMS (45). Comment— NMS specimens discussed in Warrington (2023); Pitcher & Warrington found 80% hosts parasitised; possibly attacks other Phytobia spp.

DNA Barcode: Yes.

rugosus ( Zaykov, 1982)

Literature: Zaykov (1982).

Subgenus Planiricus Perepechayenko, 2000

Type species: hians Nees hians (Nees, 1816; Sigalphus )

Hosts: Hypothesis— Parasitoid of Phytobia cambii ( = betulae ) mining cambia of Betulaceae . Evidence — Barnes (1933); Moraal (1987); van Achterberg et al. (2012); NMS (1). Comment— Possibly attacks other Phytobia spp.

DNA Barcode: Yes.

pappi ( Zaykov, 1982)

Literature: Zaykov (1982).

Hosts: Hypothesis— Parasitoid of Phytobia cerasiferae , a cambial miner of Prunus sp. ( Rosaceae ). Evidence — van Achterberg et al. (2012). Comment— Possibly attacks other Phytobia spp.

ringens (Haliday, 1839; Alysia )

Hosts: Hypothesis— Parasitoid of Phytobia cambii ( = betulae ) mining cambia of Betulaceae . Evidence — Barnes (1933); Moraal (1987); van Achterberg et al. (2012). Comment— Possibly attacks other Phytobia spp.

DNA Barcode: Yes.