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New Species of Euglossa IV. the Cordata and Purpurea Species Groups

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New Species of Euglossa IV. the Cordata and Purpurea Species Groups Rev. Biol. Trop., 30(2): 141 -150, 1982 New species of Euglossa IV. The corda ta and purpurea species groups (Hymenoptera : Apidae) Robert L. Dressler Smithsonian Tropical Research Institute, Apdo. 2072, Balboa, Rep. of Panama. (Received for publication March 18, 1982) Abstraet: Six new species of the Euglossa cordata species group and six ofthe E. purpurea species groupare described. Each is compared withits closest allies. Previous papers in this series have treated Color: Ivory paraocular markings narro w, several species groups of Euglossa, sorne of incomplete below; forward side of antennal these now well enough known to permit keys scape black; front of clypeus blue aboye, for the identification of aH known species. The blue-green below and lateraJly, with black two, none too sharply differentiated, species median keel ; sides of clypeus and paraocular groups to be treated here, in contrast, inplude areas green with golden hues; upper fr ons dark many taxonomic problems. Each group in­ green; episternum, scutum, scutellum and upper cludes sorne of the commonest Euglossa species abdomen golden green; abdomen bronzy of Tropical America, and names are c1early beneath; hind tibia blue-green with golden hueso needed for sorneof these taxa. It is to be hoped that these descriptions and names wilJ facilitate Vestiture : Plumose hairs of thorax short, work with the euglossines of South America, as tawny, denser behind, dusky ab9ve; hairs on well as work on floral ecology in the area; bút I scutum dense, dusky. do not attempt comprehensive keys, and 1 will continue to treat a number of bees in these Punctation: On fr ont of clypeus small near groups as "close to species X" for the foresee­ keel and larger laterally; on episternum of able fu ture. medium size, interspaees smaJler than punetu res; on scutum va rying in size , dense; on A. The Euglossa cordata species group. This scuteJlum sparser, with sorne mieropunetures; group includes several very common species, E. on terga Il and III fine and very dense. cordata, of northern and eastern coastal South Tongue reaehing stemum Il; labrum America, E. tridentata and E. variabilis, both subquadrate, with median keel ; cJypeus with ranging from northern South America to strong median keel, irregular laterals; seutellum southern Mexico, and, among the species to be rounded subquadrate, less than half as long as described here, E. chlorina and E. gaianii of wide, without median depression, convex northern South America, and E. modestior of aboye; sternum 11 with small, widely separated the Amazon region. This grou p is characterized tufts ; mid tibia: posterior tuft small, by having the anterior mid-tibial tuft deeply subcireular; anterior tuft about 3 times length notched, with subequal lobes, or the lower lobe ofposterior, deeply notehed, with subequal and larger, and has the hind tibia rhomboid, but less symmetrical lobes ; hind tibia rhombic. strongly inflated than is usual in the purpurea group. Female : Similar to male, but fron t of l . Euglossa chlorina, new sp. clypeus golden green, punetation of tergum 11 decreasing in size behind, seutellum more Total length 10.3 mm ; head width 4.8 mm; rounded; scutellar tuft about half seutellar abdominal width 4 mm. length. 141 142 REVISTA DE BIOLOGIA TROPICAL Holotype : Male,Caracas , Venezuela, 13 Sep. and paraocular areas bottle green; upper frons 1966. R.L. Dressler 563 (U.S.N.M.). Allotype dark green; episternum green with golden hues; female, Caracas, 5 Mar. 1967, Dressler 630 scutum dark green wi1h gdlden hues ; scutelIum (U.S.N.M.). Paratypes: 3 males of type series, golden green ; abdomen green with golden hues 12, 13 Sep. (Dressler coll.); 4 females of aboye, bronzy green beneath ; hind tibia dark allotype series, 4, 5 Mar. (Dressler coll. and to green. be distributed); 5 females, Santa Elena, Bolívar, 2Q.23 Feb. 1967, Dressler 616 (Dressler colI. Vestiture: Plumose hairs of thorax short, and to be distributed); 6 fe males, Río Chicanán, sparse, tawny, dusky aboye; hairs on scutum 26 Sep. 1966, Dressler 567 (Dressler coll. and short, dense, dusky. to be distributed); 2 males, :\ripo Valle y, Trinidad, 23 Aug. 1968, H.G. IDUs (Dressler Punctation: Dense and irregular on front of coll.); 1 male, Dawa, Tapakuma, Pomeroon, clypeus, coarser laterally; on episternum of Guyana, 30 Mar. 1970, N.H. Williams (Dressler medium size, interspaces as large as punctures; coll .) ; 3 males, Villavicencio , Colombia, 23 Jul. on scutum small, variable in size, dense , sparser 1968, H.G. Hills (Dressler coll.); 2 males, behind; on scutellum sparser, with Valparaiso, Caquetá, 7 June 1968, M.H. micropunctures ; on tergum 11 basally smalI and Robinson (Dressler coll.); 3 males, Río Porce, sparse, then fine and very dense, with Antioquia, 7 Apr. 1968, Dressler 915 (Dressler prominent smooth marginal band; on III coll .); 4 males, Palotal, Córdoba, 12 Apr. 1968, coarser and denser. G. Escobar (Dressler coll.). Tongue reaching stemum 11; labrum This is another rather ordinary green subquadrate , wider than long, with median Eug/ossa. The front of the clypeus is blue-green, keel; clypeus with median keel; scutelIum so that it may easily be confused either with rounded subquadrate, margin straight behind, those species having green clypeus or with those less than half as long as wide, with slight having dark blue cIypeus. The hind tibia is median depression, convex aboye; stemum 11 rather hatchet-shaped, and E. eh/orina, is with smalI, widely separated tufts ; mid tibia: probably closest to E. despecta, which has posterior tuft smalI, subcircular; anterior tuft blue-violet clypeus, markedly asyrnmetric about 3 times length of posterior, deeply " anterior mid-tibial tuft, and much sparsér notched, with subequal lobes ;' hind tibia punctation on tergum 11. TIte epithet means rhombic-oblong. yellow-green and refers to the golden hues typical of the species. Euglossa eh/orina has Female: Similar to male, but front of been observed visiting flowers of Catt/eya clypeus green, tergal punctation sparser; mossiae and brushing on the lip; it may be too scutelIar tuft about 215 scutellar length. smalI to be a pollinator of that orchid, even if it enters the flower. The bees have been found Holotype : Male, 12 km SW Kourou , French feeding on Jaearandamimosaef olia and Guiana, 1 Dec. 1976, D. Roubik (U.S.N.M.). Staehytarph eta cayennensis, and the fe males AlIotype female, 12 km SW Kourou , 1 Mar. gather pollen of Sauvagesia and Melastomaceae. 1977, C.D. Michener (U .S.N.M.). Paratypes: 2 The males are attracted by cineole. Specimens males collected with type (Dressler coll.): 1 o f this species have been provisionally female , collected with allotype (Dressler coll.); identified as "RD 492". 7 males, 19 km SW Kourou, 22 Feb. 1977, C.D. Michener (Dressler coil and to be distributed); 2. Euglossa gaian ii, new sp. 1 female, Kourou, 16 Oct. 1976, C.D. Michener (Dressler coll;); 1 male , Balandra, Trinidad, 7 Total length 10 mm ; head width 4.5 mm; Aug. 1972, F .D. Bennett (Dressler coll.); 8 abdominal width 4.2 mm. males, Cuyaga, Aragua , Venezuela, 15 Nov. 1970, M. Gaiani (Dressler coll. and to be Color: Ivory paraocular markings narrow, distributed) ; 5 males, P. Nacional Guatopo, incomplete below ; forward si de of antennal Miranda, 700 m. , 27 July 1968, M. Gaiani scape with smalI brown spot ; front of cIypeus (Dressler coll. and to be distributed); 1 male, dark green with b'rowrush keel; sides of cIypeus IP.E.A.N., Belém, Pará, Brazil, 27 Oct. 1968, DRESSLE'R: New species of Euglossa. IV. 143 Dressler 1203 (Dressler coll.); 2 males, Tongue reaching sternum 1; labrum Concei9ao da Barra, E.S., 15 Nov. 1968, subquadrate, wider than long, with median Dressler 1280a (Dressler coll.); 16 males. keel ; clypeus tricarinate; scutellum rounded Llullapichis, Rio Pachitea, Huánuco, Perú, 29 subquadrate, less than half as long as wi de , with Jan.- 15 Feb. 1975, Dressler 1612 (Dressler faint median depression, convex aboye; sternum coll. and to be distributed). 11 with small, widely separated tufts ; mid tibia: posterior tuft small, subcircular; anterior tuft This species is very similar toE. liopoda, but about three tiines length of posterior, deeply doesnot have the extremely shiny hind tibia of and obliquely notched, with the lower lobe that species, and differs in the form of the much larger, and upper very narrow; hind tibia anterior mid-tibial tuft. The name honors rhombic-oblong. Marco Paulo Gaiani, who assisted me in the field in 1966 and 1967. After Ileft Venezuela, Female : Unknown. when perfume baits were discovered, Marco went to great effo rt to sample bees in different Holotype: Male, Rio Chicanán, Bolívar, areas of Venezuela. His material of this species Venezuela, 26 Sep. 1966, R.L. Dressler 572 first showed me that it was distinct. Euglossa (U.SN.M.). Paratypes : 5 males of type series, gaianiihas been seen to brush on the spadix of 26, 27 Sep. (Dressler coll. and to be Spothiphyllu;;z kochii (cu1tivated), and has been distributed); 1 male, sarne locality, 26 Sep. collected with pollinaria of Catasetum, 1966, Dressler 567 (Dressler coll.); 1 male, Coryanthes, Cycnoches, Gongora and Peristeria. Valparaiso, Caquetá, Colombia, 7 Feb. 1964, This species has been collected feeding in M.H. Robinson (Dressler coll.); 1 male, flowers of Genipa americana, an d the fe males yarina cocha , Loreto, Peru, 28 Aug. 1972, E.W. gather pollen from Melastomaceae. The males Stiles (Dressler coll.); 1 male, Res. Ducke, have been collected at methyl salicylate, and Manaus, AM., Brazil, 18 Oct. 1968, Dressler are not attracted to other known perfume baits. 1152 (Dressler coll.); 3 males, I.P.E.A.N., Spe cimens o f this species have been Belém, Pará, 24-28 Oct. 1968, Dressler 1173 provisionally identifiedas "RD 548". (Dressler coll.); 1 male, Belém, 14 Dec.
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