Janssoniella caudata Kerrich, 1957

Tselikh, E. V., 2020, Review of the eastern Palaearctic species of Janssoniella (Hymenoptera: Pteromalidae), with descriptions of four new species, Zoosystematica Rossica (China) 29 (2), pp. 301-315 : 304

publication ID	https://doi.org/10.31610/zsr/2020.29.2.301
publication LSID	urn:lsid:zoobank.org:pub:DA6F145B-E18D-4628-965E-CFEE8EF5997D
persistent identifier	https://treatment.plazi.org/id/882C87CC-CB38-3A50-2883-C74C1580F9D3
treatment provided by	Felipe
scientific name	Janssoniella caudata Kerrich, 1957
status

Treatment

Janssoniella caudata Kerrich, 1957 View in CoL

( Figs 10–16)

Janssoniella caudata Kerrich in Kerrich & Graham,

1957: 304–305, 306; holotype, female (LUZN, examined).

Type material examined. Holotype. Female, Sweden, “ SWEDEN, Skåne, Ringsjö, female, coll. C.G. Thomson ” ( LUZN).

Additional material examined. Russia, Irkutsk Prov., Listvyanka Vill., Great Baikal Trail , 51°51′37″N, 104°56′24″E, 25–26.VII.2019, coll. E. Tselikh, 2 females GoogleMaps ; Sakhalin Prov., Yuzhno-Sakhalinsk Town, 30.VI.1983, coll. V. Kostyukov, 1 female; Kunashir Island , Alekhino Vill., 13–14.V.1973, coll. I. Kerzhner, 1 female (all in ZISP) .

Distribution. United Kingdom, Sweden, Germany, Czech Republic, Russia, Canada, USA.

Biology. Primary parasitoid of Ceracis thoracicornis (Ziegler, 1845) and Cis sp. ( Coleoptera : Ciidae ) and possibly secondary parasitoid of Eubazus (Aliolus) tomoxiae (Rohwer, 1915) ( Hymenoptera : Braconidae ) ( Heydon, 1997).

Comparative diagnosis. This species is similar to J. kawabatai in having the fore wing hyaline and body length 2.10–4.60 mm. However, J. caudata has the basal cell of fore wing bare or with three setae (vs pilose apically), costal cell with one complete row of setae (vs two complete rows), F1 with two rows of dense sensilla (vs three rows), head in dorsal view distinctly emarginate (vs shallowly emarginate).

Remarks. The characters of the eastern Palaearctic specimens of this species fully match those of the European ( Kerrich & Graham, 1957) and North American specimens ( Heydon, 1997).