Thectochlora hamata, Gonçalves, Rodrigo B. & Melo, Gabriel A. R., 2006

Gonçalves, Rodrigo B. & Melo, Gabriel A. R., 2006, Revision of the bee genus Thectochlora Moure (Hymenoptera, Apidae, Halictinae), Zootaxa 1331, pp. 1-30 : 21-22

Thectochlora hamata new species

(Figuras 5, 9, 10, 18, 26, 27, 33 and 34)

Comments

This species is easily distinguished from other Thectochlora by the presence of a hook in both fore and mid leg trochanters ( Figs. 9 and 10 ). In the cladistic analysis, this species came out as the sister-group of T. basiatra (see Comments under the latter). All locality records come from southern Brazil and Uruguay (Fig. 33).

Diagnosis

In both sexes, the presence of a hook on the fore leg trochanter and the hook on mid leg trochanter strong, almost as long as width of trochanter; body punctation strong and relatively deep. In the male, flagellomeres subequal in length and with short pubescence restricted to basal and apical one-thirds of the flagellomeres; S4 with a central patch of erect short setae and few lateral hairs.

Description

Male Holotype. Measurements. Eye: 1.16; cl: 0.43; c-a: 0.75; c-o: 0.95; mhl: 1.69; oc: 0.16; mhw: 1.85; F4: 0.22; mml: 0.06; abl: 6.08. (1) Head. Wider than long. Supraclypeal area only weakly convex, its lateral portions with same curvature as adjacent parocular surface. (2) Antennae. Flagellomeres II to XI subequal in length; on the anterior surface, the short pubescence restricted to basal and apical one-thirds of the flagellomeres, leaving small glabrous areas in the middle of each flagellomere. (3) Mesoscutum. Outline, in dorsal view, of lateral half of projecting anterior border almost straight; punctation on this area sparse. (4) Mesepisternum. Almost entirely punctured, not rugulose. (5) Metapostnotum. Basal sulcus with many complete transverse carinae. (6) Propodeum. Punctation on dorso-lateral area deep and dense, punctures about one-half puncture diameter apart. (7) Fore and mid leg trochanters with a developed dorsal hook. (8) Metasoma. Disc of S4 with central patch of erect and few lateral setae (as in Fig. 18 ). (9) Genitalia. Not dissected (see Figs. 26 and 27 ). (10) Body color. Metallic green with labrum, mandibles, clypeal apex, femur apex, most of tibiae and tarsi yellow; tibiae with brown marks.

Female paratype (from Esteio, Rio Grande do Sul, Brazil). Measurements. Eye: 1.26; cl: 0.43; c-a: 0.81; c-o: 1.02; mhl: 1.75; o-c: 0.2; mhw: 1.95; mml: 0.01; abl: 6.56. (1) Head. Wider than long. Supraclypeal area only weakly convex, its lateral portions with same curvature as adjacent parocular surface; lower paraocular area with many decumbent and few erect hairs, the latter with very short branches; malar space short. (2) Mesoscutum. Outline, in dorsal view, of lateral half of projecting anterior border almost straight, medial notch shallow; punctation of lamella sparse. (3) Mesepisternum. Almost entirely finely rugulose and irregularly punctured. (4) Metapostnotum. Basal sulcus with many complete transverse carinae. (5) Propodeum. Punctation on dorso-lateral area very dense, punctures about one-half to one-third puncture diameter apart. (6) Legs. Dorsal hook present on fore leg; hook on mid leg trochanter strong, almost as high as width of trochanter. (7) Metasoma. Punctures on marginal zone of T2 about one puncture diameter apart, as strong as those on disc, punctation denser on disc (about one-half puncture diameter apart). (8) Body color. Metallic green with brown legs.

Type material

Holotype male ( DZUP), “ DZUP \ 21019” “ESTEIO — R.G.S.\ Brasil \ XII-1952 \ R. Laperriere l.”. Paratypes. BRAZIL, Paraná: 1 female ( DZUP), “ Brasil, Paraná,\ Guaratuba, Balneário\ dos Coroados, restinga,\ 25°58`S 48°36`W,\ 16m 18.x.2003,\ G. A. R. Melo”. Santa Catarina: 2 females ( DZUP) “ DZUP \ 20909” “Pântano do Sul SC\ Brasil — XI-59 \ P.D. HURD leg”; and “ DZUP \ 20910” “ Brasil, Santa Catarina,\ 9 Km a E de Araranguá,\ 28°57’S 49°25`N,\ 17.xi.2002, G.Melo,\ área de dunas”; 1 male ( DZUP), “ITAPEMA — SC\ 7.I.1976 \ Luiz Pereira col.”; 2 females ( UNESC), “Vila Nova, SC- Brasil \ 13km Sta. Rosa do Sul\ 07.XII.2002 \ leg. LC. Minussi”; 1 female ( UNESC), “Araranguá, SC-Brasil\ 18.IX.2002 11:00\ leg. Alves dos Santos” “Arroio do Silva\ Dunas Interiores”; 1 male ( UNESC), “Araranguá, SC-Brasil\ 18.IX.2002 11:00\ leg. Alves dos Santos” “Arroio do Silva\ Dunas Interiores”, 1 male with same data except “ 17.XI.2002 9- 11:00”. Rio Grande do Sul: females ( DZUP) with same data of the holotypus except series numbers “ DZUP \ 20984” to “ DZUP \ 20999” and “ DZUP \ 21001” to “ DZUP \ 21008”; “ DZUP \ 21000” “ESTEIO — R.G.S.\ Brasil \ Dez.-1952\R. Laperriere l.”; 6 females and males pinned together ( DZUP), “ DZUP \ 21009” “ESTEIO — R.G.S.\ Brasil \ Jan.-1953\ R. Laperriere l.”, 1 female with same data except “ DZUP \ 21011”, “ DZUP \ 21012” and “ DZUP \ 21013”; 1 female ( DZUP), “ DZUP \ 21014” “ESTEIO — R.G.S.\ Brasil \ Dez.-1952\ P.A. Piacentini”; 1 female ( DZUP), “ DZUP \ 21010” “ESTEIO — R.G.S.\ Brasil \ Dez.-1952\ R. Laperriere l.”; 1 female ( DZUP), “ DZUP \ 21015” “Porto Alegre — RS\ Brasil — 22 II-61 \ N.L.Marston”; 1 female ( DZUP), “ DZUP \ 21016” “S. Leopoldo RS\ Brasil 20-III-65 \ Pe. Celio Valle”; 1 male ( DZUP), “ DZUP \ 21017” “S. Leopoldo RS\ Brasil 14-III-65 \ Pe. Celio Valle”. URUGUAY: 2 males ( AMNH), “ URUGUAY, Rio Negro\ Arroyo Negro, 15 km.\ S. Paysandu\ December 27-31, 1962 \ R.G. Van Gelder”.

Figures

FIGURES 7 – 10. Male legs. 7, T. basiatra (from Curitiba, Paraná, Brazil) fore leg. 8, same, mid leg. 9, T. hamata (from Esteio, Rio Grande do Sul, Brazil) fore leg. 10, same, mid leg. Figures 7, 9 and 8, 10, respectively, at same scale.

FIGURES 15 – 19. Male S 4, ventral view. 15, T. alaris (from Araxá, Minas Gerais, Brazil). 16, T. basiatra (from Vila Velha, Paraná, Brazil). 17, T. brachycera (from São Luis, Maranhão, Brazil). 18, T. hamata (from Cotegipe, Rio Grande do Sul, Brazil). 19, T. mixta (from Dourados, Mato Grosso do Sul, Brazil). All figures at same scale. Scale bar: 0.5 mm.

FIGURES 26 – 29. Male genitalia. 26, T. hamata (from Cotegipe, Rio Grande do Sul, Brazil), ventral view. 27, Same, dorsal view. 28, T. mixta (from Dourados, Mato Grosso do Sul, Brazil), ventral view. 29, Same, dorsal view. All figures at same scale. Scale bars: 0.25 mm.