Ceratalictus Coelho & Gonçalves, 2010, n. sp.
Creators: name: Coelho, Beatriz W. T.
name: Gonçalves, Rodrigo B.
Publisher: name: Zenodo
Year: 2010
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Halictidae
Ceratalictus

description: 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)
description: Published as part of Coelho, Beatriz W. T. & Gonçalves, Rodrigo B., 2010, A taxonomic revision of the augochlorine bee genus Ceratalictus Moure (Hymenoptera, Apoidea), pp. 1-25 in Zootaxa 2675 on pages 3-4, DOI: 10.5281/zenodo.199190