Pseudaugochlora

Almeida, Eduardo A. B., 2008, Revision of the Brazilian Species of Pseudaugochlora Michener 1954 (Hymenoptera: Halictidae: Augochlorini), Zootaxa 1679, pp. 1-38 : 36-37

Key to the Brazilian species of Pseudaugochlora

1 Metasomal terga generally with black apical margins (rarely dark brown); epistomal sulcus of female forming an approximately orthogonal angle; integument of female mesoscutum, among punctures, microreticulate ( Fig.5 a); basitibial plate of female microreticulate; F11 of male hooked ( Figs.3 a–c); S4 of male with a Y­shaped hair patch ( Figs.2 a,b), S5 of male with two lateral hair patches ( Figs.2 a,b).............2

­ Metasomal terga generally with black apical margins dark brown, brown or light brown; epistomal sulcus forming small and acute paraocular lobe protruding onto clypeus (less evident in male); integument of mesoscutum of female (among punctures) smooth ( Fig.5 b); basitibial plate of female smooth; F11 of male with a ventral projection not as strongly developed as a hook ( Fig.1 e), or unmodified ( Fig.1 d); S4 with hair patches, but neveof male not Y­shaped, on S5 V­shaped ( Figs.2 c,d)....................................................6

2 Disc of clypeus of female medially depressed for its distal third, forming a longitudinal furrow or a broad depressed area ( Fig.8 ); sides and base of clypeus of female extensively microreticulate forming a rough U­shaped band adjacent to the epistomal sulcus; F11 of male weakly hooked, resembling a ventrally pointed projection ( Fig.1 b)..........................................................................................................................3

­ Disc of clypeus of female flat or weakly concave for its distal third; lateral portions of clypeus of female microreticulate (especially upper corner of the clypeus) — basal portion of clypeus often not microreticulate medially; F11 of male strongly hooked ( Figs.1 a,c)..............................................................................4

3 Disc of clypeus of female broadly depressed for its distal third ( Fig.8 a); metasoma of female bluish green, T1 very finely and weakly puntate, intermixed with coarser punctures ( Figs.7 d,e); mesoscutum of female with extensive sparsely punctate areas, generally surrounding posterior third of mesoscutal line; mandible of male generally brown to light brown; hair apices on stem of the Y­shaped hair patch on S4 of male ordered, aiming at midline of this patch ( Fig.2 b) ........................................................... P. callaina Almeida

­ Apical third of clypeus of female depressed as a short longitudinal groove ( Fig.8 b); color of female metasoma variable, rarely bluish green, punctation on disc of T1 of female dense and moderately coarse ( Figs.7 a–c); mesoscutum of female with sparsely punctate areas generally restricted to the mesoscutal bands and reaching posterior end of mesoscutal line (but not surrounding it); mandible of male yellow to light brown; hair apices on stem of the Y­shaped hair patch on S4 of male unordered and entangled (as in Fig.2 a) ......................................................................................................................... P. indistincta Almeida

4 Punctures of disc of T1 of female moderately dense to dense, generally uniform in diameter ( Fig.7 a), sometimes with a few slightly coarser punctures intermixed among the others ( Figs.7 b,c); hook of F11 of male antenna as in Fig.1 a; F5 of male less than 1.5x longer than wide .................. P. graminea (Fabricius)

­ Punctures of disc of T1 of female generally fine intermixed with noticeably coarser punctures ( Figs.7 d–f), punctation sparse or moderately dense; F11 of male strongly hooked ( Fig.1 c); F5 of male 1.5x longer than wide or longer...............................................................................................................................................5

5 Metasoma with distinctive reddish and golden highlights; sides and base of clypeus of female extensively microreticulate, forming a rough U­shaped band adjacent to the epistomal sulcus ....................................... ............................................................................................................................... P. erythrogaster Almeida

­ Color of metasoma variable, but never with reddish and golden highlights; microreticulation of clypeus of female restricted its upper corner, median area adjacent to epistomal sulcus smooth. P. s i m u l a t a Almeida

6 Angle of the frontal line between supraclypeal and frontal areas gently declivous (approximately 140 — Fig.6 a); apical margins of T1–T4 light brown to greenish; basal area of labrum of female smooth; T2–T5

of female often with weak bluish and yellowish highlights; F11 of male with a ventral projection, but not hooked ( Fig.1 e); hair tufts of S4 and S5 of male as in Fig.2 d ........................................ P. pandora (Smith) ­ Angle of the frontal line between supraclypeal and frontal areas abrupty declivous (approximately 100 — Fig.6 b); apical margins of T1–T4 brown to dark brown (generally lighter on males); basal area of labrum of female microrugulose, except region near basal elevation; T2–T5 of female often with reddish, golden, and/or bronze highlights; F11 of male not modified ( Fig.1 d); hair tufts of S4 and S5 of male as in Fig.2 c ............................................................................................................................ P. flammula Almeida

Figures

FIGURE 1. Distal flagellomeres of male antenna: (a) P. graminea (Fabricius 1804); (b) P. callaina Almeida, sp. n.; (c) P. erythrogaster Almeida, sp. n.; (d) P. flammula Almeida, sp. n.; (e) P. pandora (Smith 1853). Scale = 0.3 mm.

FIGURE 2. Ventral view of metasoma of male: (a) P. g r a m i n e a (Fabricius 1804); (b) P. callaina Almeida, sp. n.; (c) P. flammula Almeida, sp. n.; (d) P. pandora (Smith 1853). Pubescence, except tufts on S 4 and S 5, ommited. Scale = 0.5 mm.

FIGURE 3. Seventh and eighth metasomal sterna (S 7 and S 8) of male: (a) P. graminea (Fabricius 1804); (b) P. callaina Almeida, sp. n.; (c) P. f l a m m u l a Almeida, sp. n.; (d) P. pandora (Smith 1853). Scale = 0.2 mm.

FIGURE 5. Integument of mesoscutum of female: (a) P. graminea (Fabricius 1804); (b) P. flammula Almeida, sp. n. Scale = 0.2 mm.

FIGURE 6. Fronto­lateral view of head of female: (a) P. graminea (Fabricius 1804); (b) P. flammula Almeida, sp. n. a. s. = antennal socket; m. o. = median ocellus. Scale = 1.0 mm.

FIGURE 7. Six punctation patterns (a – f) observed on disc of T 1 of females of Pseudaugochlora spp.

FIGURE 8. Frontal view of head of female Pseudaugochlora spp. showing depressed area of clypeus (a) P. callaina Almeida, sp. n.; (b) P. i n d i s t i n c t a Almeida, sp. n. Scale = 1 mm.