Scaura atlantica Melo,

Melo, Gabriel A. R. & Costa, Marco Antônio, 2004, A new stingless bee species of the genus Scaura (Hymenoptera, Apidae) from the Brazilian Atlantic forest, with notes on S. latitarsis (Friese), Zootaxa 544, pp. 1-10: 7-9

publication ID

http://doi.org/ 10.5281/zenodo.157383

publication LSID

lsid:zoobank.org:pub:A6D210FD-F15B-465E-8A38-012C611D4856

persistent identifier

http://treatment.plazi.org/id/03AF87BB-FF83-FE20-AD50-9466FC1F9A65

treatment provided by

Plazi

scientific name

Scaura atlantica Melo
status

sp. nov.

Scaura atlantica Melo  , sp. nov.

( Figs. 2, 4, 6View FIGURES 1 – 6, 8, 10, 12– 15View FIGURES 7 – 12View FIGURE 13View FIGURES 14 – 15)

Comments and Diagnosis

Scaura atlantica  , sp. nov., is one of the forms which, according to Schwarz’s (1948) revision, would be considered as latitarsis  . However, there are many morphological differences between them. This species can be distinguished from latitarsis  by its larger body size, darker color, smoother upper frons ( Fig. 4View FIGURES 1 – 6), shorter simple setae on the frons, disc of mesocutum and terga 4–5 ( Figs. 4, 6View FIGURES 1 – 6, 12View FIGURES 7 – 12, respectively), plumose setae on frons with shorter branches ( Fig. 4View FIGURES 1 – 6), presence of brown simple setae on upper mesepisternum and by the contour of posterior margin of the hind basitarsus ( Fig. 10View FIGURES 7 – 12). From S. argyrea  , it differs by possessing a frons with shorter simple setae and whose sockets are less protuberant, shorter simple setae on the mesoscutum and by the shape of the hind basitarsus.

This new species has been collected in the Atlantic forest of southern Bahia and northern Espírito Santo, in eastern Brazil, including the basin of the Jequitinhonha river, in the state of Minas Gerais ( Fig. 13View FIGURE 13). It is possible that the specimens from Ilha Grande, in Rio de Janeiro, listed by Schwarz (1948) under S. latitarsis  , belong to S. atlantica  .

Description

Worker holotype. Body length: 3.7 mm; maximum head width: 1.81 mm; forewing length: 4.1 mm; maximum width of T 2: 1.3 mm. Color: Integument predominantly black. Apical third of mandibles dark reddish brown. Scape entirely black, except for reddish brown radicle. Last three tarsomeres reddish brown. Terga brown and sterna light brown. Tegulae, wing veins and pterostigma dark brown; wing membrane hyaline. Pubescence: Longest simple setae on upper frons with 0.10–0.12 mm in length; those on the scape with about 0.04 mm. Longest simple setae on disc of mesoscutum 0.09–0.10 mm long; short, plumose pubescence brown, less branched than in S. latitarsis  . Simple setae on posterior portion of upper mesepisternum brown. Erect setae on posterior margin of T 2–5 brown, those on T 6 brown to white; longest setae on mid portion of T 3 with 0.05–0.06 mm in length, on T 4 with 0.06–0.07 mm, and on T 5 with 0.07–0.08 mm. Integumental surface: Predominantly smooth and shiny. Frons, between setal punctures, smooth, reticulations restricted to area around ocelli; sockets of simple setae on upper frons and vertex only weakly raised. Structure (measurements in mm): Head about 1.3 x wider than long (1.81: 1.38); proportion between upper (tangential to lower rim of mid ocellus), maximum and lower interorbital distances, 0.86: 1: 0.76 (1.1: 1.28: 0.98); clypeus 2 x wider than long (0.85: 0.43); scape, excluding radicle, about 6.4 x longer than its maximum width (0.70: 0.11); proportion between pedicel, 1 st and 2 nd flagellomeres, 1.5: 1: 1.2 (0.15: 0.1: 0.12); ocelo­orbital distance, in dorsal view, 0.63 x distance between posterior ocelli (0.22: 0.35). Hind basitarsus, in inner view, about 1.8 x longer than its maximum width (1.2: 0.67).

Type material

Brazil, Bahia: holotype worker, “ Brasil, Bahia, Ilhéus, / Campus da UESC, / 10.i. 2003, G. Melo & / M. Costa Ninho A”. Paratypes: 6 workers, same data as holotype; 8 workers, same data except “Ninho B”; 4 workers, “DPTo. ZOOL / UF ­PARANÁ” and “URUÇUCA ­ BAHIA / BRASIL 27 /II/ 72 / V. Graf leg.”; Espírito Santo: 30 workers, “DPTo. ZOOL / UF ­ PARANÁ” and “ SÃO ROQUE ­ E. SANTO / BRASIL 24­29 /IV/ 67 / C. & C. T. Elias leg.”; 1 worker, “DPTo. ZOOL / UF ­ PARANÁ” and “ CONC. DA BARRA ­ ES / BRASIL ­ 12 /V/ 1969 / Claudionor Elias”; Minas Gerais: 2 workers, “Penedo: Fazenda / Penedo­Serrinha / 1995­6115 ” and “Itamarandiba MG / BRASIL 12 / 01/ 1998 / F. A. Silveira”. Holotype and most paratypes in DZUP, 4 paratypes in RPSP and 1 paratype in DZMG.

Biology

Three nests were found in a secondary forest within the campus of the Universidade Estadual de Santa Cruz, in Ilhéus, Bahia. Similarly to the other species of the latitarsis  group, all nests were build within active nests of Nasutitermes  ( Fig. 14View FIGURES 14 – 15). The termite nests (and the bee’s nest entrance) were between 1 to 1.7 m from the ground. The entrance tubes were build with a reddish yellow and soft cerumen ( Fig. 15View FIGURES 14 – 15) and measured between 2 to 3 cm in length. The entrance itself had an oval contour whose longer axis measured about 7 mm and the shorter axis around 5 mm. One nest was opened and presented an internal architecture very similar to that described by Camargo (1970).

SÃO

Sammlung Oberli

CONC

Universidad de Concepción

DZUP

Universidade Federal do Parana, Colecao de Entomologia Pe. Jesus Santiago Moure

RPSP

Universidade de Sao Paulo

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Hymenoptera

Family

Apidae

Genus

Scaura