Coelinidea Viereck, 1913

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 : 40-42

Coelinidea Viereck, 1913

Type species: niger Nees (in Stephanus )

LEPTON Zetterstedt, 1838 preocc. (type species: attenuator Zetterstedt ( = gracilis Curtis ))

ERICOELINIUS Viereck, 1913 (type species: longulus Ashmead )

FISCHERASTRIOLUS Perepechayenko, 1999 (type species: rufa Astafurova )

Notes: Generic synonymy follows van Achterberg (2014), see notes under Coelinius . The 19 th century literature is summarised by Marshall (1891 -1896, pp 512-522) and Marshall (1897-1900, pp 247; 332-333) with an addendum on Thomson’s species by Maréchal (1938). Herrich-Schäffer largely deals with Coelinidea (under Coelinius ) in fascicle 153 of his Faunae insectorum Germanicae ( Herrich-Schäffer 1838) with additional information in 154 and 156 ( Belokobylskij et al. (2003) provide an index to the very complex pagination). Since then four European species have been described while Tobias (1986) has keyed the European Russian and Astrafurova in Tobias (1998) the East Palearctic species (the latter translated into German by Fischer (2001)) though it is not always straightforward to reconcile the Russian interpretation of species with their original description. The extent of red colouration on the mesosoma and metasoma is frequently used for species determination but the degree to which it varies intraspecifically is not clear. The identity of some species described in the 19 th century is uncertain, and some may be better placed in Coelinius but are provisionally left here until types can be located and studied (Curtis types are in the Museums Victoria, Melbourne , Australia). There are several undescribed species. DNA barcodes seem to be less helpful in Coelinidea than in other genera with one BIN containing several traditional species ( elegans , gracilis , ruficollis ) while specimens that match niger and elegans occur in multiple BINs. BIN associations are not given here pending further research, but sequences seem to cluster in three clades, one associated with the names elegans , gracilis , ruficollis , one with niger and vidua , and one with an undescribed species. Until the genus is revised putting names to many specimens will be problematic. The North American fauna is somewhat better known than the European due to Riegel (1982) and Kula (2008).

Hosts: Hypothesis— Parasitoids of Chloropidae in stems of grass ( Poaceae ). Evidence— Riegel (1982), Nartshuk (2006). Comments —Both evidence sources are uncritical summaries of the literature and include species of Chlorops , Meromyza and Oscinella with most European records involving Coelinidea nigra .

albimana (Snellen van Vollenhoven, 1873; Polemon )

Literature: Marshall (1891 -1896, p. 516); Tobias (1986).

Hosts: Rudow (1918) gives Seioptera vibrans ( Ulidiidae ) which would be a new host family for the Dacnusini , but a high proportion of his host associations are incorrect and confirmation is required.

Notes: Palps and anterior legs (except coxae and base of femur) whiteish; Tobias’ (1986) interpretation seems not to match original description.

[ depressa ( Herrich-Schäffer, 1838; Coelinius )]

Literature: Herrich-Schäffer (1838); Marshall (1891 -1896, p. 522); Maréchal (1938).

Notes: Herrich-Schäffer comments “Easily distinguished from the other species by the triangular shape of the petiole [less than twice as long as broad]” so probably not Coelinidea in modern sense. Not recognised since original brief description and Maréchal (1938) who searched for the type considered it untraceably so we treat as a nomen dubium .

elegans ( Curtis, 1829; Chaenon )

Synonymy: brevicornis ( Curtis, 1829, Chaenon ); cingulatus ( Curtis, 1829, Chaenon ); rufinotatus ( Curtis, 1829, Chaenon ); similis ( Curtis, 1829, Chaenon ).

Literature: Marshall (1891 -1896, p. 520); Marshall (1899, p.6); Tobias (1986).

[ fuliginosa ( Curtis, 1829; Chaenon )]

Literature: Curtis (1829).

Notes: Not recognised since Curtis’ description and omitted by Marshall (1897-1900) who synonymized most Curtis taxa. Curtis very briefly distinguishes it from affinis ( = nigra ) on minor colour details and we treat as a synonym of nigra .

gracilis ( Curtis, 1829; Chaenon )

Synonymy: attenuator (Zetterstedt, 1838, Lepton ) ( Papp 1994).

Literature: Marshall (1891 -1896, p. 519); Marshall (1899, p.5); Tobias (1986),

Hosts: A record quoted in Taxapad from Photedes extrema (= Tapinostola concolor ) ( Noctuidae , Lepidoptera ) is almost certainly incorrect. The species feeds in Calamagrostis ( Poaceae ) stems and the true host is likely a chloropid in this habitat.

[ gravis ( Herrich-Schäffer, 1838; Coelinius )]

Literature: Herrich-Schäffer (1838); Marshall (1891 -1896, p. 522).

Notes: Unrecognised since description; Herrich-Schäffer was unaware of previously described Coelinidea (and misinterpreted Coelinius parvulus Nees with which he compares gravis ). Maréchal (1938) who searched for the type considered it untraceably, so we treat as a nomen dubium .

niger (Nees, 1811; Stephanus )

Synonymy: affinis ( Curtis, 1829, Chaenon ); nigricans (Westwood, 1835, Chaenon ); olivieri (Guérin-Ménéville, 1842, Alysia );? fulignosa ( Curtis, 1829, Chaenon ). Often in literature in the feminine form nigra .

Literature: Marshall (1891 -1896, p. 517); Marshall (1899, p.3); Tobias (1986).

Hosts: Hypothesis —Parasitoid of Chloropidae . Evidence— In the applied literature, long noted (e.g. Curtis 1845) as a parasitoid of chloropid pests of cereal (such as Oscinella frit, Frit Fly ; and Chlorops pumilionis, Gout Fly ). Riegel (1982) & Nartshuk (2006) review 19 th & 20 th century literature but no recent studies we are aware of.

parvipennis ( Thomson, 1895; Dacnusa )

Literature: Thomson (1895) who described in subgenus Coelinius ; Marshall (1897-1900, pp. 333); Maréchal (1938).

Notes: Maréchal (1938) provides a detailed redescription and comments on low number of antennal segments. Otherwise not recognised since original description.

[ parvulus ( Herrich-Schäffer, 1838; Coelinius ) not parvulus (Nees, 1811; Chaenon )]

Literature: Herrich-Schäffer (1838); Marshall (1891 -1896, p. 522).

Notes: Herrich-Schäffer was not aware of Nees’ parvulus (which he knew as rimator and circulator ) and his very brief description shows his parvulus was a different species. Not recognised since original brief description and Maréchal (1938) who searched for the type considered it untraceably so we treat as a nomen dubium .

podagrica (Haliday, 1839; Alysia )

Literature: Marshall (1891 -1896, p. 516); Marshall (1899, p.3); Tobias (1986).

Notes: Little recognised since Haliday’s time; this species has very short legs but otherwise resembles viduus (Marshall 1900) . Capek and Hoffmann (1997) note a specimen in Lausanne reared from Hydrellia ( Ephydridae ) which would be a novel host for the Coelinius genus complex and requires confirmation.

[ pospelovi (Kurdjumov, 1912; Gyrocampa )]

Cannot be recognised to genus from its description and Griffiths (VI-98) suspected it might be a Coelinidea as apparently reared from Oscinella frit ( Chloropidae ); not discussed by Tobias (1986) and we treat as a nomen dubium .

pusilla (Astafurova, 1998; Coelinius )

Literature: Astrafurova in Tobias (1998); Fischer (2001), detailed redescription.

Similar species: C. ruficollis ( pusilla more extensively light-coloured).

rufa (Astafurova, 1998; Coelinius )

Literature: Astrafurova in Tobias (1998); Fischer (2001), detailed redescription.

Similar species: C. semirufa ( rufa more extensively light-coloured).

ruficollis ( Herrich-Schäffer, 1838; Coelinius )

Synonymy: procerus (Haliday, 1839, Alysia ).

Literature: Marshall (1891 -1896, p. 519); Marshall (1899, p.4); Tobias (1986).

Notes: Characterised by a completely red pronotum, though specimens with extensive red on the pronotum but which are probably referable to gracilis also occur and would run to ruficollis in existing keys. See also note under Coelinius parvulus .

semirufa Fischer, 1957

Literature: Fischer (1957); Tobias (1986).

Notes: Fischer (1957) states the female is extensively red on the head and thorax while the male is darker and similar to elegans .

stenostigma ( Thomson, 1895; Dacnusa )

Literature: Thomson (1895) who described in subgenus Coelinius ; Marshall (1897-1900, pp. 333).

Notes: Not recognised since original description; Thomson distinguishes from related species by the second cubital cell being shorter than the basal thickness of the stigma.

trjapitzini Tobias, 1971

Literature: Tobias (1986).

Notes: Tobias (1986) compares with niger but has far fewer antennal segments.

vidua ( Curtis, 1829; Chaenon )

Synonymy: ater (Curtis, 1837, Chaenon ) nom. nud.; obscurus ( Curtis, 1829; Chaenon ), synonymised by Marshall (1891 -1896).

Literature: Marshall (1891 -1896, p. 515); Marshall (1899, p.2); Tobias (1986).

Hosts: Fulmek (1962) & Riegel (1982) quote several records from Chloropidae in Poaceae stems, though the latter points out host identifications may not match modern species.