A taxonomic revision of the augochlorine bee genus Ceratalictus Moure (Hymenoptera, Apoidea) Author Coelho, Beatriz W. T. Author Gonçalves, Rodrigo B. text Zootaxa 2010 2675 1 25 journal article 10.5281/zenodo.199190 f5b507dc-886c-440c-8b4a-842bd97eee4b 1175-5326 199190 Key to the species of Ceratalictus Females 1 Preoccipital ridge strongly lamellate ( Fig. 24 ); head much wider than long ( Bolivia : Mapiri; Brazil : Acre, Goiás, Mato Grosso, Minas Gerais, Rondônia, São Paulo) ......................................................................... C. stigon (Vachal) - Preoccipital ridge not lamellate, head shape variable................................................................................................... 2 2 Lateral angle of pronotum obtuse (as in Figs. 19 and 23 ) ............................................................................................ 3 - Lateral angle of pronotum acute (as in Figs. 17, 18, 20–22 ) ....................................................................................... 5 3 Straight carinae on metapostnotum not extending laterally onto propodeum; head and mesosoma coarsely punctate giving it a dull appearance ( Fig. 15 ); metasoma smooth, not lineolate, frequently with some cupreous highlights ( Argentina : Misiones; Brazil : Paraná, Rio Grande do Sul, Santa Catarina, São Paulo; Paraguay : Caaguazu, Itapúa; Uruguay : Tacuarembo) ................................................................................................................ C. psoraspis (Vachal) - Straight carinae on metapostnotum extending laterally onto propodeum; head and mesosoma not dull; metasoma lineolate, green, very rarely with reddish highlights ........................................................................................................ 4 4 Head wider than long, with a rounded appearance ( Fig. 10 ); mesoscutal disc with punctures separated by 1–3 puncture diameters, punctures of variable size ( Fig.19 ) ( Bolivia : Santa Cruz; Brazil : Mato Grosso, Minas Gerais, Paraná, São Paulo) ....................................................................................................................................... C. clonius (Bréthes) - Head as long as wide, with an elongate appearance ( Fig. 9 ); mesoscutal disc with punctures almost contiguous, punctures approximately equal in size ( Brazil : Minas Gerais) ........................................................ C. camargoi n. sp. 5 Punctures on lateral part of mesoscutum not contiguous, punctation sparser toward the disc ( Figs. 17, 22 ) ............ 6 - Punctures on lateral part of mesoscutum almost contiguous from lateral margin to approximately one-third between parapsidal lines and median sulcus, centrally more spaced ( Figs. 18, 20, 21 ) ............................................................. 7 6 Metapostnotum with almost all carinae complete, radiating to the apex ( Bolivia : La Paz) .... C. orthocarinatus n. sp. - Metapostnotum with median carinae never complete nor radiating ( Argentina : Salta; Bolivia : Beni, Santa Cruz; Brazil ; Mato Grosso do Sul, Minas Gerais, São Paulo; Paraguay : Alto Paraná, Caazapá, Caaguazú; Itapua; Paraná, San Pedro ) ............................................................................................................................................ C. allostictus Moure 7 Lateral angle of pronotum acute, not projected ( Fig. 18 ) ( Argentina : Catamarca, La Rioja, Salta, Tucuman) ............. ....................................................................................................................................................... C. argentinus n. sp. - Lateral angle of pronotum very acute, projected to the head ( Fig. 20 )........................................................................ 8 8 Mesoscutal disc punctures regularly spaced, separated by one puncture diameter ( Brazil : Espírito Santo).................. ........................................................................................................................................................... C. culminis n. sp. - Mesoscutal disc punctures irregularly spaced, separated by 1–3 puncture diameters................................................ 9 9 Preoccipital ridge produced, curved upward almost forming a lamella; body with bluish reflections ( Bolivia : La Paz; Peru : Marcapata) .......................................................................................................................... C. ischnotes (Vachal) - Preoccipital ridge not produced; body without bluish reflections ( Argentina : Iguassu; Brazil : Paraná, São Paulo) ..... ............................................................................................................................................................... C. nitidus n.sp. Males (males of C. ischnotes (Vachal) , C. nitidus n. sp. , C. orthocarinatus n. sp. are unknown) 1 S4 homogeneously hairy ( Fig. 3 ); S5 without transverse thickening ( Fig. 4 ) ............................................................. 2 - S4 with a well-defined central patch of hair ( Fig. 5 ); S5 with transverse thickening ( Fig. 6 ) .................................... 4 2 Head as long as wide, with an elongated appearance ( Fig. 27 ); posterior surface of propodeum with few branched erect setae, most setae not branched ................................................................................................ C. camargoi n. sp. - Head wider than long, with a rounded appearance (as in Figs. 25, 26, 28–31 ); posterior surface of propodeum with several branched erect setae ......................................................................................................................................... 3 3 Metapostnotum posterior margin semicircular, carinae almost straight; disc of T1–T3 with bluish reflections, poste- rior marginal area with apical black stripe ...................................................................................... C. argentinus n. sp. - Metapostnotum posterior margin triangular, carinae sinuous; disc of T1–T3 darkened, posterior marginal area entirely black ................................................................................................................................... C. clonius (Brèthes) 4 Mesoscutal disc with contiguous punctures; median carinae of metapostnotum strongly sinuous................................ .................................................................................................................................................... C. psoraspis (Vachal) - Mesoscutal disc punctures not contiguous; median carinae of metapostnotum variable in shape.............................. 5 5 Lateral angle of pronotum acute, not projecting ........................................................................... C. allostictus Moure - Lateral angle of pronotum very acute, projecting to the head ..................................................................................... 6 6 Preoccipital ridge not lamellate; mesoscutum micro-reticulate; metapostnotal carinae strongly sinuous .................... ........................................................................................................................................................... C. culminis n. sp. - Preoccipital ridge lamellate; mesoscutum without micro-reticulation; metapostnotal carinae weakly sinuous ............ .......................................................................................................................................................... C. stigon (Vachal)