Euglossa (Euglossa) monnei Nemésio, 2012

Nemésio, André, 2012, Species of Euglossa Latreille, 1802 (Hymenoptera: Apidae: Euglossina) belonging to the purpurea species group occurring in eastern Brazil, with description of Euglossa monnei sp. n., Zootaxa 3151, pp. 35-52 : 42-44

Euglossa (Euglossa) monnei Nemésio , sp. n.

Diagnosis. This species is assigned to the subgenus Euglossa (Euglossa) Latreille, 1802 due to its small size, short extended tongue, rhomboid metatibia, small and widely separated tufts on S2. It is also easily included within purpurea species group due to the subtriangular mesotibial tufts. Euglossa monnei sp. n. is very similar to the Amazonian Euglossa magnipes Dressler, 1982b , but both can be distinguished from each other due to the following characters: (i) shape of anterior mesotibial tuft, which lower lobe in Euglossa monnei sp. n. is proportionately larger compared to the upper lobe ( Fig. 9 E) (smaller or similar in E. magnipes ); no other species of the purpurea group in the Atlantic Forest present the lower lobe of the anterior mesotibial tuft larger than the upper lobe, (ii) presence of an ivory marking on frontal surface of scape in Euglossa monnei sp. n. ( Fig. 8 E) (absent in E. magnipes ), (iii) glandular scar of the metatibia shorter and wider in E. magnipes than in Euglossa monnei sp. n. ( Fig. 10 E). (High quality photographs of holotype Euglossa magnipes can be found at Smithsonian Tropical Research Institute web site at: http://biogeodb.stri.si.edu/bioinformatics/roubik_bees/index.php?gs%5B%5D= magnipes (accessed October 27th, 2011 )).

Description (Male, Figs. 8 E, 9E, 10E, 11E): Color and vestiture. Clypeus blue, rest of head bluish green, except the plain green inferior paraocular areas ( Fig. 8 E); overall coloration of integument bluish green, except golden green in sterna ( Fig. 11 E). Wings pale brown. Pubescence very sparse, predominantly fulvous hairs on metasoma and antennal sockets, black and fulvous hairs on mesosoma, black hairs especially on scutum. Ivory paraocular markings present and well developed, almost reaching malar area; anterior surface of antennal scape with large ivory marking.

Head. Width 5.0 mm; interorbital distance at level of antennal sockets 2.7 mm; maximum interorbital distance 3.0 mm; scape 0.9 mm; eye length 3.1 mm.

Body. Body length ca. 11.5 mm; anterior wing ca. 8.5 mm; tongue in repose reaching hindcoxa; scutellum 2.8 mm wide and 1.3 mm long; abdominal width 4.8 mm. Punctation on mesosoma dense, with circular punctures of approximately the same size, on scutellum dense, with larger circular punctures.

Legs. Foretibia and forebasitarsus fringed with medium-sized, dense, fulvous hairs; velvet area occupying all the ventral side of mesotibia, posterior mesotibial tuft small, slightly oblong; anterior mesotibial tuft subtriangular, lower lobe slightly larger than upper lobe forming a right angle with the latter ( Fig. 9 E); metatibia oblong-rhomboid, inflated, post-glandular area fringed with medium-sized hairs (0.47 mm long).

Metasoma. Punctation on discal base of T1 sparse, with large circular punctures; on distal part of T1 and T2– T4 dense, comprised of small circular punctures; on T5–T7 dense, with large circular punctures. S2 with welldefined, widely separated tufts ( Fig. 11 E).

Etymology. The specific epithet honors the “coleopterist” Miguel A. Monné.

Type locality. Holotype collected at Floresta Nacional ( FLONA) Rio Preto (18°21’28”S, 39°51’18”W, ca. 18 m a.s.l.), in the municipality of Conceição da Barra, state of Espírito Santo, southeastern Brazil, attracted to vanillin.

Female. Unknown.

Type material. HOLOTYPE— male, with the following data: “Euglossina da Hileia Baiana, FLONA Rio Preto, 17479-49985” and “Conceição da Barra, ES, Brasil, 26/12/2009, A. Nemésio” and “ Euglossa (Euglossa) monnei Nemésio , sp. n., HOLOTYPUS ” ( UFMG). PARATYPES— 13 males, with the following label data: “Euglossina da Hileia Baiana, BR 101, Km 794, 16406-46211” and “Itamaraju, BA, Brasil, 04/10/2009, A. Nemésio” and “ Euglossa (Euglossa) monnei Nemésio , sp. n., PARATYPUS ” ( UFMG); “idem, RPPN Michelin, 16999- 47680” and “Igrapiúna, BA, Brasil, 01/12/2009, A. Nemésio” and “idem” ( UFMG); “idem, Res. Nat. Vale, 17131- 48258” and “Linhares, ES, Brasil, 10/12/2009, A. Nemésio” and “idem” ( UFMG); “idem, 17134-48292” and “idem, 11/12/2009 ” and “idem” ( UFMG); “idem, REBIO Sooretama, 17182-48634” and “Sooretama, ES, Brasil, 12/12/2009, A. Nemésio” and “idem” ( UFMG); “idem, 17244-48980” and “idem, 14/12/2009 ” and “idem” ( UFMG); “idem, Res. Nat. Vale, 17273-49156” and “Linhares, ES, Brasil, 150/12/2009, A. Nemésio” and “idem” ( UFMG); “idem, RPPN Serra Bonita, 17777-51040” and “Camacan, BA, Brasil, 24/01/2010, A. Nemésio” and “idem” ( UFMG); “idem, REBIO Una, 19092-54726” and “Una, BA, Brasil, 01/02/2009, A. Nemésio” and “idem” ( UFMG); “idem, 19117-54824” and “idem” and “idem” ( UFMG); “idem, PN Monte Pascoal, 19509-56144” and “Porto Seguro, BA, Brasil, 11/04/2009, A. Nemésio” and “idem” ( UFMG); “idem, PN Descobrimento, 20763- 59389” and “Prado, BA, Brasil, 23/12/2008, A. Nemésio” and “idem” ( UFMG); “idem, 21079-60463” and “idem, 31/12/2008 ” and “idem” ( UFMG).

Attractive baits. Nine specimens were attracted to vanillin, four to cineole and a single male was attracted to trans -methyl cinnamate.

Geographic distribution ( Fig. 6 ). Besides the type locality, Euglossa monnei sp. n. was collected at (i) RPPN Fazenda Michelin (Igrapiúna, Bahia); (ii) REBIO Una (Una, Bahia); (iii) RPPN Serra Bonita (Camacan, Bahia); (iv) PN Monte Pascoal (Porto Seguro, Bahia); (v) a non-protected forest fragment of ca. 300 ha in Itamaraju (Bahia); (vi) PN Descobrimento (Prado, Bahia), (vii) Reserva Natural Vale (Linhares, Espírito Santo), (viii) REBIO Sooretama (Sooretama, Espírito Santo).

It is important to notice that only 14 Euglossa monnei sp. n. males were recorded among ca. 15,000 orchid bees collected in all these areas. Although widely distributed in the core area of the so-called “Hileia Baiana” (the dense coastal Atlantic Forest of southern Bahia and northern Espírito Santo), this species is rare in orchid-bee samplings.

Figures

FIGURE 6. Map showing the known geographic distribution (black circles) of Euglossa monnei sp. n. in the Neotropics.

FIGURE 8. Frontal view of face. A: Euglossa truncata Rebêlo & Moure, 1996, B: E. amazonica Dressler, 1982 b, C: E. aratingae Nemésio, 2009, D: E. avicula Dressler, 1982 b, E: Holotype E. monnei sp. n., F: E. pleosticta Dressler, 1982 b.

FIGURE 9. Ventral side of mesotibia. A: E. truncata, B: E. amazonica, C: E. aratingae, D: E. avicula, E: Holotype E. monnei sp. n., F: E. pleosticta.

FIGURE 10. Metatibia. A: E. truncata, B: E. amazonica, C: E. aratingae, D: E. avicula, E: Holotype E. monnei sp. n., F: E. pleosticta.

FIGURE 11. Ventral view of metasoma. A: E. truncata, B: E. amazonica, C: E. aratingae, D: E. avicula, E: Holotype E. monnei sp. n., F: E. pleosticta.