Neocorynura codion ( Vachal, 1904 )

Smith-Pardo, Allan H., 2010, Taxonomic review of the species of Neocorynura (Hymenoptera: Halictidae: Augochlorini) inhabiting Argentina and Paraguay, Zootaxa 2507, pp. 44-68 : 45-48

Neocorynura codion ( Vachal, 1904)

( Figs. 1 , 8 )

Halictus codion Vachal, 1904: 125

Neocorynura codion ; Moure, 1944: 69 (taxonomic position as Neocorynura ) Diagnosis. Specimens of Neocorynura codion can be distinguished from other species of Neocorynura by their unique color pattern (i.e., body largely dark brown, gena completely metallic and broad basal bands on T2 to T5) and by the strongly sulcate base of propodeum (in other species, the base of the propodeum is mostly striate). This species can be distinguished from N. tangophyla sp. nov. by the integument of the clypeus (mostly smooth) and the completely metallic green pronotum and metanotum (in N. tangophyla the integument is mostly dark brown).

Redescription: Female (lectotype, designated by Moure 1944). Body length 9.5 mm; forewing length 7.8 mm. Head width 2.2 mm, length 2.1 mm. Scape longer than combined lengths of F1 to F6; F10 longer than preceding flagellomeres; F2 slightly longer than F1. Clypeus wider than long; paraocular lobe semi-obtuse (≈ 110°). Mesoscutum slightly wider than long; metanotum more than half length of mesoscutellum. Mesotibial spur serrate and more than half length of mesobasitarsus; inner metatibial spur pectinate with five teeth, the last two slightly fused. Marginal cell semi-truncate; 1m-cu confluent with 1rs-m; 2m-cu basad 2rs-m by approximately four times vein width; first submarginal cell as long as combined lengths of second and third submarginal cells; second submarginal rectangular; anterior border of second submarginal cell as long as anterior border of third submarginal cell; pterostigma large, margin in marginal cell convex; hamuli spaced 4- 1-1-2 along anterior margin of hind wing. Basal area of propodeum sulcate and longer than mesoscutellum. Metasoma semi-petiolate (slightly longer than wide).

Labrum weakly striate, with small, more or less narrow central process. Clypeus imbricate along margins, slightly imbricate elsewhere, with very coarse punctures separated by less than 1 PD; supraclypeal area imbricate with punctures smaller and more widely distributed (1.5–2.0 PD); rest of face densely punctate; integument adjacent to inner ocular margin imbricate; gena and postgena smooth with small, faint punctures and striate. Scape imbricate, with minute punctures separated by about 1.5 PD. Pronotum mostly smooth with faint punctures; propleura imbricate. Mesoscutum densely punctate, punctures coarse and contiguous, integument between punctures imbricate; mesoscutellum smooth and densely punctate. Metanotum smooth, densely punctate, punctures of different diameters. Pleura strongly punctate with a rugose appearance, integument between punctures strongly imbricate. Tegula faintly imbricate. Basal area of propodeum smooth between sulci.

Mandible brown, tip hyaline and edges black. Labrum dark brown; clypeus black, with some metallic green reflections near epistomal sulcus; supraclypeal area dark brown with metallic purple reflections; subantennal areas, frons and vertex dark brown, area adjacent to eye margins metallic green. Mesosoma dark brown to black except pronotum metallic green; metanotum, margins of mesoscutum, and mesoscutellum metallic green; scrobe metallic blue. Legs mostly dark brown except last three tarsomers. Metasoma dark brown, except T1, with basal area metallic green; bases of T2–T4 with metallic, basal bands as wide as metanotum; T5 metallic green except around pygidial plate.

Mandible with brown, unbranched setae 0.5–2.5 OD in length, scattered. Labrum mostly bare with a row of coarse, brown, unbranched setae along anterior margin; clypeus with light brown, poorly branched setae minute to 1.5 OD in length, sparsely distributed over surface; supraclypeal area as on clypeus; subantennal area and frons with light brown, minute branched setae more or less densely distributed and with some sparse brown, poorly branched setae 1.0 OD in length among the white ones. Scape mostly with minute brown, poorly branched setae sparsely distributed. Vertex with coarse, dark brown setae 1.0 OD in length and sparsely distributed; gena with light brown setae, 0.5–1.0 OD in length, densely distributed; postgena with light brown, branched setae, 1.0–2.5 OD in length, sparsely distributed. Pronotum densely covered with minute, whitish setae and with some coarse, dark brown and poorly branched setae among them. Mesoscutum with minute, black setae more or less densely distributed and with some coarse, brown, and branched setae scattered among minute ones. Mesoscutellum with some coarse, dark brown, unbranched setae, 1.0–2.0 OD in length sparsely distributed among light brown setae. Metanotum more densely covered with minute, white setae and with longer (0.5–1.5 OD), branched setae, mostly along sides. Base of propodeum largely bare, rest of surface with minute, light brown setae, scattered on sides. Proepisternum and mesepisternum with light brown setae, 0.5–1.5 OD in length, scattered among minute, brown setae; metepisternum densely covered with minute, light brown setae. Procoxa with coarse, light brown setae, poorly branched, and 1.0 OD in length, scattered among minute, lighter ones; protrochanter mostly bare but with some coarse, light brown, unbranched setae, 1.0–3.0 OD in length along posterior margin mixed with some minute, light brown setae; profemur with outer side mostly covered with light brown, poorly branched setae, sparsely distributed and 0.5–2.0 OD in length (longer ones close to trochanter), inner surface more densely covered with minute, whitish setae; protibia with outer side mostly covered with minute light brown setae, densely distributed, inner surface more densely covered with longer setae (minute—1.0 OD); tarsi as in protibia; mesocoxa covered with minute, whitish setae, with few coarse, light brown, unbranched setae, 1.0–2.0 OD in length close to articulation with mesotrochanter; mesotrochanter with light brown, unbranched setae, 0.5–2.0 OD in length, mixed with some minute, light brown setae; mesofemur inner side with coarse, light brown setae, 0.5 OD in length and densely distributed in anterior angle and forming a patch, rest of surface with coarse, dark brown, poorly branched setae, minute—2.0 OD in length, sparsely distributed; mesotibia densely covered with unbranched setae, minute—0.5 OD in length, those on posterior margin dark brown on base and white on tip; mesotarsi as protarsi; metacoxae as procoxae, except setae more abundant and dark brown, 0.5–1.5 OD in length; metatrochanter more or less densely covered with coarse, dark brown, branched setae, 0.5–1.0 OD in length; metafemur with coarse, light brown setae, long (2.5–3.5 OD in length) somehow bending and forming scopa; metatibia covered with coarse, dark brown to light brown scattered setae distributed, those on anterior margin 1.0–1.5 OD in length, sparsely distributed, and with 3–4 branches mostly on tips, rest of surface with coarse, dark brown, unbranched setae, more or less densely distributed. T1 with coarse, light brown, branched setae, 1.0–2.5 OD in length and sparsely distributed; T2 and T3 densely covered with minute, brown setae, with some coarse, longer (0.5–1.0 OD), dark brown, and poorly branched setae sparsely distributed and with basal band of minute light brown setae; T4 as T2 and T3 except darker setae more abundant and almost 2.0 OD in length; T5 densely covered with coarse, light brown setae (longer ones darker), minute to 2.5 OD in length, lateral region covered with longer setae (1.5–2.0 OD).

Male (male specimen identified by Vachal as H. codion ). As described for the female except as follows: Body length 9.6 mm; forewing length 7.3 mm. Head width 1.9 mm, length 2.0 mm. F2 longer than F1. Mandible slender and pointed and without preapical teeth. Labral surface smooth. Paraocular lobe more angular. Basitibial plate absent; inner metatibial spur one fourth the length of metabasitarsus, rather slender and serrated. Hamuli with spacing pattern 4-1-1-3. Basal area of propodeum broadly striate. Metasoma with a slightly more elongate appearance; S6, S7, S8, and genital capsule as in Fig. 1 .

Mandible without grooves on outer surface, slightly carinate along posterior margin, anterior margin continuous. Subantennal and lower ocular areas strongly punctate, integument between punctures smooth. Mesoscutellum with punctures of irregular size and shape. Posterior side of propodeum with coarse punctures. T1 with small punctures, separated by three times PD on its posterior margin, and with punctures more broadly distributed over anterior half of T1.

Clypeus and frons metallic dark green with coppery reflections medially; supraclypeal and subantennal areas metallic, dark green; rest of face metallic orange. Legs uniformly dark brown. T1–T4 with basal third metallic green.

Mandible with some coarse, light brown, branched setae, 0.5 OD in length. Labrum largely bare. Postgena with some long setae (0.5–2.0 OD in length) more sparsely distributed. Metanotum in general with longer setae (0.5–2.0 OD) sparsely distributed. Legs (especially hind ones) in general less pubescent; protrochanter with some light brown, unbranched setae minute—1.0 OD in length, scattered on posterior margin; profemur with white setae, 0.5–1.0 OD in length, on posterior margin; protibia less densely covered; mesofemur with most of the inner side bare; metatrochanter poorly covered with setae, most of them unbranched; metafemur with some white setae, minute—1.0 OD in length, sparsely distributed on anterior margin. Metasomal pubescence as in female except setae white and dense; sterna with less pubescence, setae more scattered on S1–S3.

Type material. PERU: Marcapata (without additional information, but with an identification label as Halictus codion by Vachal). In 1958, Moure labeled this female specimen as the Lectoholotype; this specimen was later confirmed and labeled as such by Moure and Hurd (1987: 221) and is deposited in the MNHN. I compared it with the material on loan from Argentina and Paraguay listed below.

Examined material. ARGENTINA: Misiones, Iguazú. X-10-1950. M. Senkate Coll. (1 Ƥ SEMC). PARAGUAY: Alto Paraguay, Puerto Bertoni. XII-1908. A de W. Bertoni Coll. (1 3 AMNH); Junction: Iguaçu & Paraná R. [Rivers]. 1-1-1968 G.E. Bohart Coll. (1 Ƥ BBSL).

Additional records. Smith-Pardo (2005a) also identified additional material of this species from the following provinces or states: BRAZIL: Rio de Janeiro, São Paulo, Santa Catarina, and Paraná; BOLIVIA: La Paz, Santa Cruz, Chapare; ECUADOR: Pastaza and in PERU: Tingo María, Cusco, Pasco and Marcapata (type locality). Moure (2007) lists only Peru and Bolivia as distribution for this species.

Figures

FIGURE 1. Neocorynura codion (Vachal, 1904): lateral habitus of the female (top left), lateral habitus of male (bottom left); male terminalia: a: genital capsule: ventral (right half) and dorsal (left half), b: genital capsule lateral view, c: fused S 7 + S 8. Scale = 1.0 mm.

FIGURE 8. Geographic distribution of the species of Neocorynura inhabiting Argentina and Paraguay.