Coelioxys (Rhinocoelioxys) nasidens Friese
Creators: name: Filho, Léo Correia Da Rocha
name: Packer, Laurence
Publisher: name: Zenodo
Year: 2015
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Megachilidae
Coelioxys
Coelioxys nasidens

description: Coelioxys (Rhinocoelioxys) nasidens Friese
(Figs 7 A–I, 8, 16D, 16J, 17D, 17J)
Coelioxys nasidens Friese, 1921: 446.
Diagnosis. Females can be differentiated from all others in the subgenus by the unique horseshoe-shaped clypeus, which is deeply bilobed apically with the two lobes flat, parallel and densely covered with short, thick brown setae apically. In some females of C. zapoteca the clypeus is also strongly bilobed but the lobes are thick and divergent, never parallel and flat as in C. nasidens. For males, the following character state combination is sufficient for separation from all other species in the subgenus except C. clypearis: hypostomal concavity almost bare but with a single row of white hairs at its dorsal carinate margin, mesoscutellum never triangular or subtriangular, dorsal processes of T6 broad and rounded and apical margin of S5 emarginate. Coelioxys nasidens males are very similar to those of C. clypearis but can be distinguished most easily by the S5 disc strongly canaliculate, the dark brown coloration of T1, the base of S8 broadly acute.
Redescription. Female. (CNCIAN). “ BOLIVIA: Santa Cruz, Santa Maria, S 15º43’33.3” W 063º26’47.1”, 6.i.2010 216m, S. Cardinal & S. Campbell”.
Measurements. Body length: 6.46 mm; forewing length: 4.27 mm; head width: 1.88 mm. Coloration. Black except as follows: Terga, S6 dark brown to black; antenna dark brown; mandible, legs, sterna, pronotal lamella, lateral surfaces of T1–T4 red to reddish; S5 dark brown towards the apex; tegula yellowish to light brown; wings subhyaline; veins brownish.
Pubescence. White, subappressed on: Paraocular area, gena, slender hairs on mandible, labrum, complete transverse fascia on anterior margin of mesoscutum, mesosoma, legs, basal fascia of T1, apical fasciae of sterna, lateral sulcus of T6. Ocular hairs pale, short (about 0.08 mm). Scattered erect, long, slender, brownish setae on paraocular area, supraclypeal area, mandible. Upper paraocular area with long, brown hairs distinct from those of adjacent regions, oriented mesad, apices of some hairs from each side almost meeting medially. Clypeus covered with appressed, thick, pale hairs and scattered long, erect, brownish setae. Apical margin of lobes densely covered with brown hairs, pale hairs at the emargination. Frontal area covered with minute, appressed, slender yellowish hairs. Slender, erect, yellow setae on punctures on vertex and mesoscutum. Thick, yellow setae on tarsi. T2–T5 apical fasciae composed of appressed, plumose, white hairs. A few erect yellowish setae besides the white fascia on lateral sulcus of T6.
Surface sculpture. Ocellar area coarsely punctate; vertex moderately densely punctate, interspaces among punctures larger than puncture diameter, ocellocular area sparsely punctate; mesoscutum, mesepisternum sculptured, punctures on disc of mesoscutum larger towards the sides, elliptical; mesoscutellum coarsely, densely punctate, dorso-median ridge nearly impunctate, axilla coarsely punctate, without shining areas; T1 moderately densely punctate, interspaces among punctures shining, larger than the puncture diameter; pregradular areas of T2–T5 moderately densely punctate, interspaces shining, smooth; postgradular areas of T2–T5 shining, with sparse punctures forming transverse row with additional small punctures medioposteriorly, T6 densely punctate, punctures very small, well separated, apical area more densely punctate; S1 punctate; postgradular areas of S2–S4 moderately densely punctate basally, sparsely towards apex, postgradular area of S5 sparsely punctate basally, more densely punctate towards apex.
Structure. Clypeus horseshoe-shaped, apical margin deeply bilobed, forming two flat, parallel lobes rounded apically. Dorso-median ridge on mesoscutellum obsolescent. Posterior margin nearly truncate, slightly rounded. Axilla short, acute apically. T6 subacute apically, with obsolescent sulcus laterally. Dorso-median line of T6 obsolescent except forming discrete ridge apically with depressions lateral to the discrete ridge shallow, obsolescent. Apex of S5 rounded. S6 slender, elongate, lateral margins convergent apically, subdentate, with two small, discrete notches subapically, tip subacute. Hemitergite 7 much longer than wide, area subtended by the marginal ridge narrow; apodemal region greatly produced anteriorly; lateral process reduced; spiracle close to apical margin of lamina spiracularis; lateral lamella wider than lamina spicularis. Dorsal arm of furcula long. Gonostylus subacute apically.
Male. (ANSP). “Jan.”. “Chapada”. “ANSP”. “ Coelioxys nasidens Friese ”. “as det. 1982 in, T.B. Mitchell, collection”. “ret. 1”.
Measurements. Body length: 5.42 mm; forewing length: 4.38 mm; head width: 1.88 mm. Coloration. As in female.
Pubescence. As in female except as follows: Face densely covered with pale hairs, mandible only basally with white appressed, hypostomal concavity almost bare but with a single row of white hairs at its dorsal carinate margin, posteromargin of hypostomal concavity with long, curved white hairs. Apical white fasciae of T2–T5 broadly interrupted medially, gradular grooves of T3–T6 conspicuously fasciate with short, appressed, plumose white hairs, gradular groove of T2 nearly bare.
Surface sculpture. As in female except as follows: Postgradular areas of T2 and T3 with conspicuous, elliptical, transverse, densely punctate area medially on each side; T6 with small punctures basally, punctate laterally, dorsal-median excavation densely punctate, dorsal ridges sparsely punctate; postgradular area of S5 moderately densely punctate, interspaces among punctures shining.
Structure. As in female except as follows: Hypostomal concavity deeply concave, longer than half length of compound eye. Spine-like processes of T5 separated from the surface of the tergum apically. Lateral processes of T6 pointed, acute, slightly divergent; dorsal processes short, broad, rounded apically; ventral processes long, acute. Apical margin of T7 trapezoidal, slightly produced, nearly truncate apically. Apical impressed area of S4 interrupted by a pair of apicomedial extensions from disc, these extensions delimiting a flat U-shaped area, arms of the flattened process longer than the distance that separates them. Apical rim of S4 bare medially, narrowly depressed. S5 strongly canaliculate medially towards the apex. Apical margin of S5 slightly emarginate, gradulus deeply angulate, almost reaching base. Gradulus of S6 indistinct, U-shaped, nearly reaching basal margin, pregradular areas narrow, elongate, weakly sclerotized on inner margins, strongly sclerotized along outer margins, narrowly acute at base, apical half of pregradular area densely setose, less setose on outer margins, postgradular area transparent medially, broad at base, basal membranous lip rounded. S7 obsolescent, represented by two small sclerites. S8 acute basally. Gonocoxa compressed laterally, with some long setae apically, longer than penis valve in length.
Variation. In some specimens the axilla is rounded apically.
Comments. This species was synonymized with Coelioxys clypeata Smith by Moure (1951). However, both sexes of C. nasidens are very different from males and females of the latter species.
Floral Records. Bidens sp. (Asteraceae).
Host Records. Unknown.
Geographical Distribution. Bolivia (La Paz, Santa Cruz), Brazil (Acre, Amapá, Mato Grosso, Mato Grosso do Sul, Pará, Rondônia, Santa Catarina, São Paulo), Costa Rica (Puntarenas), Ecuador (Napo, Sucumbios), Panama (Panamá), Peru (Cusco, Junín, Ucayali), Trinidad & Tobago (Arima, Diego Martín) (Fig. 8).
Material examined. Syntypes (8). BRAZIL. Amapá. 1 female (ZMB). “Macapá, 14.11.1900, Ducke”. 1 female (ZMB). “Macapá, 10.11.1900, Ducke”. “255”. “ Coelioxys nasidens, 1913 Friese Fr. det.”. 1 male (ZMB). “Mazagão, 20.10.1900, Ducke”. “ Brasil, Para, 1900, Ducke”. Pará. 1 female (ZMB). “ Brasil, Pará, 8.7.1901, Ducke”. “ Coelioxys nasidens, 1913 Friese Fr. det.”. “ Lectotypus ”. “ Type ”. “Zool. Mus., Berlin”. 1 female (ZMB). “ Brasil, Pará, 2.1.1902, Ducke”. 1 female (ZMB). “Pará, 29.11.99, Ducke”. “ Coelioxys nasidens, 1912 Friese Fr. det.”. 1 female (ZMB). “R. Arrayollos, 21.4.1903, Ducke”. 1 female (ZMB). “ Brasil, Para, 8.10.1900, Ducke”. “ Coelioxys nasidens, 1913 Friese Fr. det.”.
Additional material: BOLIVIA. La Paz. 1 male (BBSL). “ BOLIVIA: La Paz, 1km E Guanay 15º, 30’S 67º52’W 13, Mar 2001 FD Parker”. “NativeBeeSurvey, BBSL, Logan, Utah, USA, BBSL 667172”. 1 male (BBSL). “ BOLIVIA: La Paz, Mapiri 15º18’S 68º13’W 16/18 Mar, 2001 FD Parker”. “NativeBeeSurvey, BBSL, Logan, Utah, USA, BBSL 476592”. 1 male (BBSL). Idem, except “476570”. 1 male (BBSL). Idem, except “477507”. Santa Cruz. 1 male (CNCIAN). “ BOLIVIA: Santa Cruz, 5 km E. of Concepcion, S 16º04’39.5”W 061º58’30.2”, 5.i.2010, S. Cardinal & S. Campbell”. 1 female (CNCIAN). “ BOLIVIA: Santa Cruz, Santa Maria, S 15º43’33.3” W 063º26’47.1”, 6.i.2010 216 m, S. Cardinal & S. Campbell”. 1 female (BBSL). “ Bolivia: Santa Cruz, Buena Vista, net, 13 Feb 99, FDParker, 17º27.68’S 63º39.63’W ”. “ Coelioxys (Rhin.) sp. 3, Friese, 1921, Det. L. Correia da Rocha, Filho 2013, BBSL 878165”. 1 male (BBSL). “ BOLIVIA: Santa Cruz, Buena Vista, handnet, 13 Feb 1999, FDParker, 17º27.68’S 63º39.63’W ”. “ Coelioxys (Rhin.) rostrata, Friese 1922 [sic] (=1921), Det. L. Correia da Rocha, Filho 2013, BBSL 878175”. 1 male (BBSL). Idem, except 878174. 1 male (BBSL). Idem, except 878171. BRAZIL. Amapá. 1 male (ZMB). “ Guyana brasil., R. Villanova, 22. 10. 1900, Ducke”. “ Coelioxys nigritula, 1913 Friese Fr. det.”. “Zool. Mus., Berlin”. 1 male (ZMB). “Macapá, 14.11.1900, Ducke”. “ Brasil, Para, 1900, Ducke”. “ Coelioxys rugosopunctata, 1913 Friese Fr. det.”. 1 male (ZMB). “Mazagão, 18.10.1900, Ducke”. “ Brasil, Para, 1900, Ducke”. “ Coelioxys rugosopunctata, 1913 Friese Fr. det.”. Acre. 1 female (RPSP). “ Brasil – Acre, RBr – UFAC?PZ, Data 29/11/1994 ”. “A. H. Machado, E M. Santos”. “N., 310”. “ Rhinocoelioxys ”. Mato Grosso. 1 male (BBSL). “Jan.”. “Chapada, Brazil, Acc.No.2906”. “ Coelioxys clypeata Smith, T Griswold det 89”. “NativeBeeSurvey, BBSL, Logan, Utah, USA, BBSL 213605”. 1 male (ANSP). “Dec.”. “Chapada”. “ ANSP ”. “ Coelioxys nasidens Friese ”. “as det. 1982 in, T.B. Mitchell, collection”. “On loan from: Academy of Nat. Sci.-Phila: November 27, 2013 Loan #: 30.69”. 1 male (ANSP). Idem, except “Nov.”. 1 male (ANSP). Idem, except “Jan.”, “ret. 1”. Mato Grosso do Sul. 1 female (ANSP). “#6”. “Corumbá”. “12.2”. “April”. “ ANSP ”. “ Rhinocoelioxys, as det. 1982 in, T.B. Mitchell, collection”. “On loan from: Academy of Nat. Sci.-Phila: November 27, 2013 Loan #: 30.69”. Pará. 1 male (ZMB). “ Brasil, Pará, 4.6.1902, Ducke”. “ Coelioxys minutula, 1913 Friese Fr. det.”. “Zool. Mus., Berlin”. 1 male (ZMB). “Pará, 15.11.99, Ducke”. “ Coelioxys minutula, 1913 n.
Friese Fr. det.”. 1 male (ZMB). “Pará, 23.12.99, Ducke”. 1 male (ZMB). “ Brasil, Para, 7. 1903, Ducke, Obidos”. “ Coelioxys nana, 1913, n. Friese Fr. det.”. “Zool. Mus., Berlin”. “E4 [Illegible]”. 1 male (ZMB). “ Brasil, Obidos, 12. 1903, Ducke”. “ Coelioxys nana, 1913, n. Friese Fr. det.”. 1 male (ZMB). “. Arrayollos, 25.4.1903, Ducke”. “ Brasil, Para, 1900, Ducke”. “ Coelioxys nana, 1913, n. Friese Fr. det.”. 1 male (ZMB). “Pará, 13.9.99, Ducke”. “ Coelioxys rugosopunctata, 1913 Friese Fr. det.”. “Zool. Mus., Berlin”. 1 male (ZMB). “Obidos”. “ Coelioxys sanguinicollis, 1913 Friese Fr. det.”. 1 female (ZMB). “Nord-Brasilien, Para Soure Marajo, O. Bertram S. V.”. 1 female (USNM). “Para Brazil, Baker ”. Rondônia. 1 male (BMNH). “ BRASIL Guapore, Pimenta Bueno, November 1960, (M. Alvarenga)”. “ Coelioxys nasidens Fr., det. Mitch.”.”. 1 male (SEMC). “ BRASIL Guapore, Pimenta Bueno, November 1960, (M. Alvarenga)”. “ UK ”. “ Coelioxys nasidens Friese ”. “as det. 1982 in, T. B. Mitchell, Collection”. “ SEMC 1177006, KUNHM-ENT”. 1 male (SEMC). Idem, except “1177008”. 1 male (SEMC). Idem, except “ret.1”, “1177007”. Santa Catarina. 1 male (USNM). “St. Catharina, Brazil ”. São Paulo. 1 male (ZMB). “ Brasil, Jundiahy”. “ Coelioxys minutula, 1913 n. Friese Fr. det.”. COSTA RICA. Puntarenas. 1 female (RUAC). “ COSTA RICA, 1964, (R. B. Roberts)”. “Puntarenas Prov., Rio Grande de Terralba, 104 km. SE. San Isidro, 21 July 1964 ”. “ Coelioxys nasidens Fr., det. Mitch.”. “ Coelioxys clypeata ”. “Rutgers University, RUAC _ ENT 00007586”. ECUADOR. Napo. 1 male (Ansfelden). “ ECUADOR, Napo prov., 70kmSW Coca, Loreto, 4.– 10.3. 2002, 300 m, leg. Marek Halada”. Sucumbios. 1 male (AMNH). “ Ecuador: Sucumbios Prov., 5 km SE of Shushufindi, S0.227450, W76.648460, 25 Jan 2012, J. S. Ascher, E. S. Wyman, D. Webber”. PANAMA. Panamá. 1 female (AMNH). “Juan Mina, C.Z., IX-13-1945, C. D. Michener”. “ Coelioxys clypeata Sm., Det. C.D. Michener ‘52”. “ AMNH _ ENT, AMNH _ ENT 00134350”. 1 male (SEMC). “Juan Mina, C.Z., VIII-15-1945, C. D. Michener”. “ ventralis ”. “ UK ”. “ Coelioxys nasidens Friese ”. “as det. 1982 in, T. B. Mitchell, Collection”. “ SEMC 1177003, KUNHM-ENT”. 1 female (SEMC). “Juan Mina, C.Z., VI-29 1945, C. D. Michener”. “ UK ”. “ Coelioxys clypeata Sm., Det. C. D. Michener ‘52”. “ Coelioxys nasidens Friese ”. “as det. 1982 in, T. B. Mitchell, Collection”. “ SEMC 1177002, KUNHM-ENT”. PERU. Cusco. 1 male (RUAC). “ PERU, Dpto. Cuzco, Quillabamba, 1350 m, 16 August, 1984, (R. B. Roberts)”. Junín. 1 male (SEMC). “ PERU: Junín Dep., Santa Ana, 8 km W, La Merced-Salipo Rd., km 14, 900 m, 10°57’12”S, 75°16’54”W, 21 OCT 1999, R. Brooks, D. Brzoska, PERU 1B99 0 93, ex: mixed flowers”. “SM0149226, KUNHM-ENT”. 1 female (SEMC). Idem, except “km 29, PERU 1B99 0 94, ex: Bidens ”, “SM0146663”. 1 male (SEMC). Idem, except “km 29, PERU 1B99 0 94, ex: Bidens ”, “SM0144748”. Ucayali. 1 female (BMNH). “ PERU:, Dept. Loreto., Pucallpa., 30.v.1951., J.M. Schuncke., B.M. 1952-645.”. TRINIDAD & TOBAGO. Arima. 1 female (BMNH). “ TRINIDAD, Arima Valley, on Bidens ”. “ Coelioxys nasidens Fr., det. Mitch.”. 1 female (USNM). “ Trinidad, Jun WI”. “Aug Busck, Collector”. “Det by TDA, Cockerell”. “ Coelioxys clypeata Sm. ”. Diego Martín. 1 male (USNM). “Caranege [sic] (=Carenage), Trinidad, Oct. 14, 1918. A-760, Harold Morrison.”.
description: Published as part of Filho, Léo Correia Da Rocha & Packer, Laurence, 2015, Revision of the Neotropical subgenera Coelioxys (Platycoelioxys) Mitchell and C. (Rhinocoelioxys) Mitchell (Hymenoptera; Megachilidae) with the description of one new species, pp. 151-203 in Zootaxa 3941 (2) on pages 172-176, DOI: 10.11646/zootaxa.3941.2.1, http://zenodo.org/record/243416