Revision of the New World genera Adelius Haliday and Paradelius de Saeger (Hymenoptera: Braconidae: Cheloninae: Adeliini) Author Shimbori, Eduardo M. Author Bortoni, Marco A. Author Shaw, Scott R. Author Souza-Gessner, Carolina Da S. Author Cerântola, Paula De C. M. Author Penteado-Dias, Angélica M. text Zootaxa 2019 2019-03-26 4571 2 151 200 journal article 28003 10.11646/zootaxa.4571.2.1 2ecdbe19-cc16-45c9-894d-18a4d10d4bf6 1175-5326 2608186 EEF7A7F9-CDB3-4664-95FC-17AE60463A60 Adelius Haliday, 1833 Adelius , Haliday 1833 : 262 ( Mason 1985, correct spelling ). Type : Adelius subfasciatus Haliday. Acaelius , Haliday 1834 : 231 (Emendation) Acoelius , Haliday 1835 : 539 ; Marshall 1885 : 153 (Emendation) Pleiomerus , Wesmael 1837 : 67 . Anomopterus Rohwer 1914 : 80 . Type : Anomopterus fasciipennis Rohwer. Myriola Shestakov 1932 : 259 . Type : Myriola gussakovskii Shestakov. Diagnosis . Small size (ranging from 1.0 to 2.4 mm ); antenna with 20 segments in all known species; occipital carina present; epicnemial carina absent; labrum concealed by clypeus; vein r absent or present, short; vein r-m absent, second submarginal cell open; vein RS not reaching wing margin; propodeum short and frequently carinate; T1–3 fused and weakly sclerotized, covering most of the length of metasoma, although T4–6 always apparent in dorsal view; metasoma smooth or very weakly sculptured, divisions between T1 and T2, and T2 and T3 absent; spiracles on T6 and T7 absent; ovipositor very short, usually barely exerted. Distribution . Widely distributed globally in temperate and tropical areas. Included species. Palearctic: Adelius clandestinus (Förster, 1851) , Adelius erythronotus (Förster, 1851) , Adelius subfasciatus Haliday, 1833 ; Western Palearctic (only): Adelius determinatus (Förster, 1851) , Adelius dubius (Förster, 1851) , Adelius germanus ( Haliday, 1834 ) , Adelius hyalinipennis (Förster, 1851) , Adelius rudnikovi (Perepechayenko, 1994) , Adelius viator (Förster, 1851) ; Eastern Palearctic (only): Adelius amplus Belokobylskij, 1998 , Adelius aridus ( Tobias, 1967 ) , Adelius ferulae (Tobias, 1964) , Adelius gussakovskii ( Shestakov, 1932 ) , Adelius magna ( Tobias, 1967 ) ; Afrotropical: Adelius cadmium (Papp, 2003) , Adelius stenolcos de Saeger 1944 ; Australasia: Adelius angustus (Papp 1997) ; Nearctic ( Fig. 139 ): Adelius canadensis Shimbori ,& Shaw sp. n. , Adelius coloradensis Muesebeck, 1922 , Adelius fasciipennis ( Rohwer, 1914 ) , Adelius floridiensis Shimbori & Shaw sp. n. , Adelius nigripectus Muesebeck, 1922 ; Neotropical ( Fig. 140 ): Adelius adeleae Shimbori & Shaw sp. n. , Adelius bolivariensis Bortoni & Penteado-Dias sp. n. , Adelius boliviensis Bortoni & Penteado-Dias sp. n. , Adelius caatinga Bortoni, Shimbori & Penteado-Dias sp. n. , Adelius excelsus Bortoni & Shimbori sp. n. , Adelius ecuadoriensis Bortoni & Penteado-Dias sp. n. , Adelius gauldi Shimbori & Shaw sp. n. , Adelius janzeni Shimbori & Shaw sp. n. , Adelius monteiroi Souza-Gessner, Cerântola & Penteado-Dias sp. n. , Adelius morretesiensis Bortoni, Shimbori & Penteado-Dias sp. n. , Adelius quiteriae Souza-Gessner, Cerântola & Penteado-Dias sp. n. , Adelius sancticaroli Bortoni, Penteado-Dias & Shimbori sp. n. , Adelius panamensis Shimbori & Shaw sp. n. , Adelius pentagonalis Shimbori & Shaw sp. n. Comments . Adelius is certainly the most common and diverse genus of Adeliini . The first specimens of Adelius from the Neotropical Region were recorded from Costa Rica , without a further taxonomic treatment ( Whitfield 1997 ), therefore all Neotropical species treated are new to science.