Scione fulvosericea (Kröber, 1931) (Figs 39A–F, 40A–E) Fidena fulvosericea Kröber, 1931: 26, fig. 11; Surcouf, 1919: 221 (Ecuador spp.); 1921: 114 (comm.); Szilády, 1926: 28 (rev.); Kröber, 1934: 247 (cat.); Fairchild, 1941: 645 (tax.); Bequaert & Renjifo-Salcedo, 1946: 61 (Colombia spp.). Scione fulvosericea; Fairchild, 1956: 17 (tax.); 1971: 27 (cat.; as synonym of S. rufescen s Ricardo, 1900a); Moucha, 1976: 40 (cat.; as synonym of S. rufescens Ricardo, 1900a); Wilkerson, 1979: 173 (as synonym of S. rufescens Ricardo, 1900a); Fairchild & Burger, 1994: 50 (cat.); Coscarón & Papavero, 2009: 53 (cat.). Scione aureopygia Fairchild, 1942: 184, figs. 4, 4a.; 1956: 17 (tax.);1971: 27 (cat.; as synonym of S. rufescens Ricardo, 1900a); Moucha, 1976: 39 (cat.; as synonym of S. rufescen s Ricardo, 1900a); Wilkerson, 1979: 173 (as synonym of S. rufescens Ricardo, 1900a); Fairchild, 1986: 33 (Panama spp., as synonym of S. rufescens Ricardo, 1900a); Coscarón & Papavero, 2009: 53 (cat.). Type locality. Panama, Darien (as Colombia). Diagnosis and redescription. See Scione rufescens. Distribution. Costa Rica to western Andes of Colombia. Type material examined. Holotype, ♀, deposited at the NHMUK (examined through photographs); Holotype of S. aureopygia, ♀, deposited at the MCZ (examined through photographs). Additional material examined. 1 ♀, “ Panama, Darien Prov. Tacarcuna, Yellow Fever Camp / Scione fulvosericea Krob. det Fairchild 1988/ MPEG DIP 12006468/ Scione fulvosericea ” (MPEG); 1 ♀, “ Pacific Canal Zone, 6-6-1972 / Scione rufescens Ric. det. G.B. Fairchild 1981” (INPA); 1 ♀, “ Pacific Canal Zone, 6-6-1972 / Scione rufescens (Ricardo) det. Krolow, T.K., 2012” (INPA); 1 ♀, “ Almirante Camp., 10 Oct. [19]51, 6-7 P.M./ Cornelius B. Philip Collection Donated to California Academy of Sciences / Scione aureopygia Fchld. det. Fairchild 1951/ Scione rufescens (Ricardo) det. C.B. Philip / Scione rufescens (Ricardo) det. Krolow, T.K., 2012” (CAS); “ Panama: Darien Prov. Tacarcuna, Yellow Fever Camp / Shannon trap, 6– 8 P. M., 21 -VI- 1963 / Scione rufescens Ric. det. G.B. Fairchild 1981/ Scione rufescens (Ricardo) det. Krolow, T.K., 2012” (INPA). 1 ♀, Pezo Azul, Costa Rica, C.F. Underwood, May-June, 1902, per Janson./ C.J. Wainwright Collection, B.M. 1948-488./ Cornelius B. Philip Collection, Donated to California Academy of Sciences/ Compared with type ♀ Scione rufescens Ric. Agrees (over) C.B.P. 1953/ Compared with type ♀ Fidena fulvosericea Krb CB Philip 1958 agrees but darker/ Scione rufescens (Ricardo) det. Krolow, T.K., 2012” (CAS). Comments. Scione fulvosericea is very similar to S. rufescens. It differs in smaller size, the specimens of S. fulvosericea examined here measure between 14–16 mm, whereas those of S. rufescens measure between 17–17.4 mm and by the absence of the pronounced prominence at the apex of the clypeus, present in S. rufescens.

Published as part of Oliveira, Lia Pereira, Henriques, Augusto Loureiro, Buestán, Jaime & Krolow, Tiago Kütter, 2026, Taxonomic revision of the Neotropical genus Scione Walker, 1850 (Diptera: Tabanidae), pp. 1-133 in Zootaxa 5761 (1) on page 65, DOI: 10.11646/zootaxa.5761.1.1, http://zenodo.org/record/19190310