Delia sileni, Michelsen, Verner, 2012

Michelsen, Verner, 2012, Revision of the European Delia pruinosa species group (Diptera: Anthomyiidae) feeding as larvae in seed capsules of Silene L. (Caryophyllaceae), Zootaxa 3434, pp. 31-48 : 40

publication ID	https://doi.org/ 10.5281/zenodo.282060
DOI	https://doi.org/10.5281/zenodo.6179856
persistent identifier	https://treatment.plazi.org/id/03C087B7-736D-1707-FF37-87EA47C0F826
treatment provided by	Plazi
scientific name	Delia sileni
status	sp. nov.

Treatment

3. Delia sileni View in CoL sp. nov.

Figs. 1–6 View FIGURES 1 – 7 , 26–34 View FIGURES 26 – 31 View FIGURES 32 – 34 .

‘ Delia flavifrons (Zetterstedt) View in CoL ’; Hennig 1974: 701, 717, 809 (in part: text-fig. 672, plate-figs. 1014 and 1162). Misidentification.

Etymology. The specific epithet ‘sileni’ is a Latin genitive derived from ‘Silene’, the generic name of its host plant.

Description. The adults differ from other species of the Delia pruinosa species group as follows:

Male & female. Differs from D. pruinosa in having hind tibia with apical av-seta normally developed ( Fig. 6 View FIGURES 1 – 7 , arrow).

Male. Sternite IV no wider than sternite V and sternites III–V with lateral setae shorter than in D. pruinosa ( Figs. 17, 18 View FIGURES 17 – 23 ); surstyli ( Figs. 27, 28 View FIGURES 26 – 31 ) more slender in caudal aspect than seen in other species except D. capdellae sp. nov. ( Fig. 37 View FIGURES 35 – 41 ), but in that species the surstyli are more tapering in lateral aspect ( Fig. 38 View FIGURES 35 – 41 ); distiphallus ( Figs. 30, 31 View FIGURES 26 – 31 ), as also in D. pruinosa ( Figs. 13, 14 View FIGURES 8 – 14 ), with paraphallic processes same length as postero-median extension.

Female. Oviscapt ( Figs. 32, 33 View FIGURES 32 – 34 ) rather thick, decidedly longer than preabdomen when fully extended; hypoproct much longer than broad, without cuticular pubescence; cerci with several apical setae of moderate and equal strength. Oviscapt overall very similar to that of D. judicariae ( Figs. 24, 25 View FIGURES 24 – 25 ), but distinguished by having the basal membranes of segments VII and VIII covered in tiny, weakly pilose scales arranged in transverse bands ( Fig. 33 View FIGURES 32 – 34 ).

Material examined. Type material: DENMARK [ ZMUC]: S. Zealand: Holtug Kridtbrud, Stevns Klint, holotype 3, paratypes 93, 7Ƥ, on Silene nutans 5.vi.1996 (V. Michelsen). Other material: CZECH REPUBLIC [ ZMUC]: Moravia: Mrsklesy, 1Ƥ 15.v.1974 (Barabás). FINLAND [ FMNH, ZMUC]: Regio aboensis: Naantali, 23 [no date], 13 14.vi.1936, 13 5.vii.1955 (L. Tiensuu); Turku, 13 18.vii.1947 (Thuneberg); Satava Is., 13 9.vi.2005 (K. Winqvist). ITALY: South Tyrol: Stilfser Joch [= Stelvio Pass], 2757m, 2Ƥ 12.vii.1997 (S. Andersen). SPAIN [ ZMUC]: Santander: Fuenta Dé, 13 18.vi.1983 (R. Hall); Lerida: 1km S Túnel Viella, 1300m, 13 22.vi.1982 (Andersen, Lyneborg & Michelsen); Gerona: Queralps, 1200–1300m, 13 13–17.vi.1982 (Andersen, Lyneborg & Michelsen); 13 11–12.vii.1984, 23 17–20.vi.2002, 1Ƥ 10.vi.2007 (V. Michelsen). TURKEY [ ZMUC]: Izmir: Bergama–Kozak rd., 700m, 33, 3Ƥ 10–12.v.1993 (V. Michelsen).

Distribution. Czech Republic, Denmark, Estonia ( Hennig 1974, “Dorpat” [= Tartu]), Finland, Italy, Spain, Turkey.