Euglossa (Glossurella) rufipes Rasmussen & Skov

Rasmussen, Claus & Skov, Charlotte, 2006, Description of a new species of Euglossa (Hymenoptera: Apidae: Euglossini) with notes on comparative biology, Zootaxa 1210, pp. 53-67 : 55-60

Euglossa (Glossurella) rufipes Rasmussen & Skov , new species

Diagnosis

Large blue­violet bee (> 16 mm), tongue>1.4x body length. Sternal pockets lacking and only one mid tibial tuft. Males of E. rufipes are distinguished from E. asarophora and all other known species of Euglossa by the non­metallic red coloration of the hind tibia (fig. 1). The hind tibia of E. asarophora is metallic blue (fig. 2). The apical process of the eighth metasomal sternum is broader in E. rufipes males than in E. asarophora (compare figs. 8 and 11). The single mid tibial tuft is less than 2x as long as wide in E. rufipes males, while more than 2x as long as wide in E. asarophora (figs. 5 and 6). Both sexes of E. rufipes differ from E. asarophora by the almost complete absence of a green tinge on the mesosoma. Also, the clypeal disc is convex and not concave as in E. asarophora (figs. 3 and 4).

Description

HOLOTYPE MALE. Dimensions. Body length 16.67 mm, tongue in repose approximately 23 mm (1.4x body length). Head width 5.62 mm (all males; n=28, mean 5.64 mm, range 5.32–5.92 mm). All other measurements are listed in table 1.

Color of integument. Bluish­violet on most of the integument; green tinge faint and reduced to the axilla, edges of mesopleuron, and laterally on metanotum. Posterior tibia (tibia III) non­metallic red (almost orange on some of the paratypes), bluish­violet on dorsal and ventral margins (figure 1). Sponge­like tissue inside tibia visible through partly transparent surface. Basal third of posterior basitarsus reddish gradually turning bluishviolet apically. Mid femur and tibia and posterior femur reddish­violet, particularly ventrally. Paraocular marking ivory white, 0.3 mm wide at base, reaching up to the lower level of the antenna; malar area white with two dark spots; mandible white with two black teeth; clypeus white laterally. Scape and pedicel black, flagellum dark brownish. Tegula violet. Wing faintly fuscous and veins amber brown. The marginal cell darker than remaining area.

Pilosity. White pubescence on most of the body surface, mixed with black and gray on vertex, pronotal lobe, mesopleuron (particularly dorsally), and on mesonotum. Gena with a row, extending to the vertex, of about 17 stout, short, black bristles. Vertex with mixed longer setae. White pilosity of the face as in fig. 3. Basal metasomal terga with short (<0.2 mm) white setae, longer (0.7 mm) on apical terga. Scutellum with black setae (0.8 mm).

Second sternum devoid of semicircular depressions with setae. Velvet area of mid tibia as in fig. 5, basal part of this area with one discrete and complete tuft, although not as welldefined as in other species of Euglossa (e.g., Dressler 1978). Tuft approximately 1.4x as long as wide.

Punctures. Face (fig. 3) with small punctures (0.04 mm). Punctures rather uniform in size and distribution over the surface of mesoscutum. Scutellum with punctures of 0.07 and 0.03 mm interspersed, except for the median depression, which has fewer and only large punctures.

Genitalia and hidden sterna. See figs. 7–9. Apical process of the eighth metasomal sternum broadly pointed. Genitalia ventrally with median parts of the interior margin of gonocoxite rounded in E. rufipes , while slightly convex in E. asarophora .

Form and proportions (measurements given in table 1). Head 1.24x as wide as long. Eyes 0.47x as wide as long. Malar space 0.96x as long as the diameter of the 3rd flagellomere. Clypeus 1.06x as wide as long and 1.07x the clypeocellar distance. Mandibular basal width 0.49x of the clypeocellar distance. Scape 0.79x as long as the alveolocellar distance. Scutellum 1.88x as wide as long. Posterior tibia 2.08x as long as wide.

ALLOTYPE FEMALE. Body length 16.17 mm. Head width 5.77 (all females; n=9, mean 5.70 mm, range 5.47–6.03 mm). All other measurements listed in table 1. Like male, except for usual sexually dimorphic characteristics and as follows: black on approximately apical half of mandible with three teeth, and only one large black spot on malar area. Scutellar tuft 0.52 mm wide and 1.16 mm long. Posterior tibia bluish­violet.

Form and proportions (measurements given in table 1). Head 1.24x as wide as long. E yes 0.45x as wide as long. Malar space 1.04x as long as diameter of 3rd flagellomere. Clypeus 1.08x as wide as long and 1.07x clypeocellar distance. Mandibular basal width 0.46x clypeocellar distance. Scape 0.91x as long as alveolocellar distance. Scutellum 1.88x as wide as long. Posterior tibia 1.89x as long as wide.

Euglossa rufipes sp. n. Euglossa asarophora

Va r ia b le male paratypes, mean S.D. holotype allotype holotype male female * range (n=10) (male) (female) (male) (n=1) (n=1)

1 15.54–17.31 16.28 0.65 16.67 16.17 14.95 14.91 16.93

2 5.52–5.92 5.68 0.12 5.62 5.77 5.42 5.47 5.72

3 4.46–4.76 4.59 0.09 4.46 4.66 ­ 4.51 4.35

4 3.80–4.05 3.88 0.08 3.85 3.90 3.72 3.85 4.05

5 1.82–1.87 1.84 0.02 1.82 1.77 1.80 1.92 1.82

6 2.22–2.41 2.33 0.06 2.35 2.51 ­ 2.12 2.38

7 2.95–3.36 3.20 0.12 3.17 3.27 2.15 3.08 3.36

8 2.82–3.04 2.94 0.09 2.92 3.17 ­ 2.70 3.08

9 0.22–0.29 0.25 0.02 0.23 0.29 0.30 0.29 0.31

10 0.31–0.40 0.36 0.03 0.35 0.37 0.36 0.36 0.38

11 0.67–0.76 0.70 0.03 0.72 0.77 0.60 0.58 0.69

12 1.34–1.44 1.37 0.03 1.36 1.46 1.20 1.31 1.36

13 0.44–0.47 0.46 0.01 0.44 0.48 0.44 0.40 0.45

14 0.33–0.36 0.35 0.01 0.33 0.37 ­ 0.32 0.35

15 0.43–0.49 0.46 0.02 0.48 0.54 ­ 0.40 0.56

16 1.49–1.66 1.54 0.05 1.54 1.54 ­ 1.97 1.61

17 1.84–2.17 1.98 0.09 1.92 2.02 1.83 1.79 2.09

18 0.28–0.32 0.31 0.01 0.32 0.33 0.32 0.31 0.40

19 0.56–0.62 0.60 0.02 0.62 0.61 0.60 0.51 0.68

20 0.40–0.51 0.43 0.03 0.49 0.51 0.60 0.47 0.47

21 0.51–0.71 0.62 0.06 0.61 0.81 0.40 0.62 0.83

22 1.94–2.10 1.99 0.05 2.06 2.00 1.90 1.94 2.02

23 1.96–2.30 2.11 0.09 2.14 2.16 2.50 2.00 2.10

24 0.23–0.32 0.27 0.03 0.29 0.29 0.25 0.20 0.24

25 0.88–1.09 0.98 0.07 0.96 0.93 0.90 0.83 0.94

26 1.44–1.59 1.51 0.05 1.51 1.64 1.44 1.44 1.56

27 1.51–1.71 1.58 0.07 1.64 1.69 1.60 1.54 1.79

28 1.17–1.34 1.22 0.05 1.33 1.40 1.12 1.15 1.34

29 0.28–0.32 0.30 0.01 0.28 0.29 ­ 0.28 0.30

30 0.82–0.98 0.90 0.05 0.88 0.82 ­ 0.82 0.88

31 0.22–0.27 0.26 0.02 0.29 0.29 ­ 0.22 0.25

to be continued *Variables: 1) total body length; 2) head width; 3) head length; 4) eye length; 5) eye width; 6) upper interorbital (or interocular) distance; 7) maximum interorbital distance; 8) lower interorbital distance; 9) distance between lateral ocelli; 10) median ocellus diameter; 11) ocellorbital (or ocellocular) distance; 12) interalveolar distance; 13) alveolus diameter, maximum; 14) alveolus diameter, minimum; 15) alveolorbital (or alveocular) distance; 16) alveolocellar distance; 17) clypeocellar distance; 18) ocelloccipital distance; 19) orbitoccipital distance; 20) transluscent elliptical spots, width; 21) transluscent elliptical spots, length; 22) clypeus length; 23) clypeus width; 24) malar area length; 25) mandible basal width; 26) labrum width; 27) labrum length; 28) scape length; 29) scape width (mid); 30) length of pedicel plus flagellum; 31) 1st flagellomere length; 32) 2nd flagellomere length; 33) 3rd flagellomere length; 34) 3rd flagellomere diameter; 35) scutellum length; 36) scutellum width; 37) mesoscutum length; 38) mesoscutum width; 39) marginal cell length; 40) marginal cell width; 41) forewing length; 42) number of hamuli; 43) pterostigma length; 44) pterostigma width; 45) 1st abscissa of M; 46) 1st abscissa of Cu; 47) Rs+M; 48) tibia II length; 49) tibia III length; 50) tibia III width; 51) basitarsus III length; 52) basitarsus III width; 53) setae length on posterior fringe of tibia III.

Material examined: HOLOTYPE: Male, PERU, “ PERU, SM, Tarapoto­Yurimaguas / road km 20 “BIODIVERSIDAD” / S0634/W7620, 950 masl / April 2003, C. Rasmussen leg. ” (white label), “ HOLOTYPE Euglossa rufipes sp. n. ɗ Rasmussen & Skov” (red label), deposited in the entomological collection of the Museo Nacional de Historia Natural ( MUSM), Universidad Nacional Mayor de San Marcos, Lima, Peru. ALLOTYPE: Female “ PERU, SM, Tarapoto­ / Yurimaguas, km 20 / “BIODIVERSIDAD” / 0634/7620 950 masl / 18­X­2002 / Claus Rasmussen leg ”, “ALLOTYPE Euglossa rufipes sp. n. Ψ Rasmussen & Skov” ( MUSM). The specimen is designated as allotype to refer to the specific female from which measurements were taken, although allotype designation is not regulated by the International Commission of Zoological Nomenclature (1999), and may be regarded as a paratype. PARATYPES: Nine males, same data as holotype; 7 males “ Peru: Dept. San Martin, Tarapoto­Yurimaguas rd., km 20 (Biodiversidad), 1­4.IV.2003, Leg. C. Skov # 1” (others labeled # 3, 4, 5, 6, 7, and 8); 2 males “ PERU, Huanuco: Carpich (=Carpish) Oct. 1982, L. Peña”; 7 males, ECUADOR, “ Ecuador: Napo: Rio Hollin, km 17 to Loreto; 1280 m; 6 Jan. 1990, M. Whitten”. Additional label “14”, other specimens labeled “15”, “16”, “17”, “18”, “43”, and “73”; 1 male “93230”, “ ECUADOR: Napo: Hollin­Loreto Rd km 14, 1200 m, 20 May 1993, Mark Whitten”; 1 male “Rio Zaturyacu, Napo, Ecuador, D. Velastigui, Cineole 12/17/1969 ”; 1 male “ ECUADOR: Pastaza, Puyo (km 35 to Tena), 2­29 1980, N. H. Williams, 960m ”, “103”, “cineole”; 6 females, PERU, “ PERU, SM, Tarapoto­Yurimaguas km 20, “BIODIVERSIDAD”, 0634/7620, 950 masl, IX­X 2002, Rasmussen & Rios leg ”; 1 female “ PERU, SM, Tarapoto­Yurimaguas km 20, “BIODIVERSIDAD”, 0634/7620, 950 masl, 18­X­2002, Claus Rasmussen leg ”; 1 female “ PERU, SM, Tarapoto­Yurimaguas road km 20, “BIODIVERSIDAD”, S0634/W7620, 950 masl, February 2003, C. Rasmussen leg. ”. All specimens in the collection of MUSM; American Museum of Natural History, NY, USA ( AMNH); Camargo collection, Department of Biology, Faculty of Philosophy, Science and Letters of Ribeirão Preto, University of São Paulo, Brazil; Dressler collection, University of Florida Herbarium, FL, USA ( FLAS); Illinois Natural History Survey collection, IL, USA ( INHS); National Museum of Natural History, Washington, D.C., USA; Snow Entomological Museum, University of Kansas, KS, USA; and tentatively in the private collection of CR. An additional male paratype in the collection of Estación de Biología “Los Tuxtlas”, Universidad Nacional Autónoma de México, Veracruz, Mexico from ECUADOR, “ ECUADOR: Pastaza: Rd. from Puyo past Veracruz, 1050m, III­2­1980, N. H. Williams”. Morphometric examination of this specimen was not made.

Distribution. From the eastern slopes of the Andes in central Peru (Huánuco and San Martín) to the eastern slopes of central Ecuador (Pastaza and Napo). The altitude ranges from approximately 950 m a.s.l. (Biodiversidad, Puyo) to 1,280 m a.s.l. (Río Hollin). The Carpish tunnel is located at 2,500–2,800 m a.s.l., although the specimens possibly were collected at lower elevation toward Tingo María (at 670 m a.s.l.) without reaching the city, from which it has not been recorded (CR, pers. obs.).

Etymology. Latin: rufus = red, pes = foot, leg. The specific epithet refers to the nonmetallic orange­red posterior tibia of the male bee, unique among the known species of Euglossa .