Coelioxys (Rhinocoelioxys) clypearis Friese

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, Zootaxa 3941 (2), pp. 151-203 : 170-172

Coelioxys (Rhinocoelioxys) clypearis Friese

( Figs 5 A–I, 6, 16A, 16G, 17A, 17G)

Coelioxys clypearis Friese, 1921: 446 .

Diagnosis. For females, the combination of ocular hairs short (~ 0.07mm) and clypeus weakly emarginate is unique, all other species in the subgenus either have a more strongly modified apical margin to the clypeus or long (~ 0.12mm) ocular hairs. For males, the combination of the following character states is diagnostic among species of the subgenus: hypostomal concavity almost bare but with a single row of white hairs at its dorsal carinate margin, mesoscutellum not coarsely sculptured and with shining areas medially, posterior margin of mesoscutellum rounded, T1 red across entire width and S4 with arms of U-shaped apical impressed area shorter than the distance that separates them.

Redescription. Female. (PCYU). “ ARGENTINA Entre Ríos, El Palmar, S 31º52.119’ W 058º13.868’, 15.iv.2008 Sweep Net, A. Taylor PCYU-ATARG 90”.

Measurements. Body length: 6.35 mm; forewing length: 4.27 mm; head width: 1.98 mm. Coloration. Black except as follows: Antenna dark brown; mandible, legs, sterna, pronotal lamella, T1, lateral surfaces of T2–T4 red; S5 dark brown towards apex; tegula yellowish to light brown; wings subhyaline; veins brownish.

Pubescence. White, subappressed on: Paraocular area, gena, scattered 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 0.07 mm). Scattered erect, slender, whitish setae on paraocular area. 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. Frontal area, supraclypeal area, clypeus covered with minute, appressed, slender yellowish hairs. Slender, erect, yellow setae arising from punctures on vertex and mesoscutum. Thick, yellow setae on tarsi. T2–T5 apical fasciae composed of appressed, plumose, white hairs. 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 moderately densely punctate, axilla coarsely, densely punctate, 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. Apical margin of clypeus medially emarginate, sinuate, forming two distinct, rounded lobes; clypeus with two discrete longitudinal ridges medially. Dorso-median ridge on mesoscutellum obsolescent. Posterior margin of mesoscutellum rounded. Axilla very short, blunt. T6 subacute apically and 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. (BBSL). “Campinas Bz, Sao Paulo, XI-5–72 ”. “R M Bohart, Colr”. “ Coelioxys (Rhin.) cf. rostrata, Friese, 1922 [sic] (=1921), Det. L. Correia da Rocha, Filho 2013, BBSL878159”.

Measurements. Body length: 5.63 mm; forewing length: 4.58 mm; head width: 1.88 mm. Coloration. As in female.

Pubescence. As in female except as follows: Face densely covered with pale hairs, mandibles only basally, hypostomal concavity almost bare 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, less distinctly so on T2.

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 punctate basally, sparsely laterally, dorsalmedian excavation densely punctate, dorsal ridges nearly impunctate; postgradular area of S5 moderately densely punctate, shining areas among punctures.

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 to truncate apically; ventral processes long, acute. Apical margin of T7 triangular, slightly produced, subacute 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 subequal or shorter than the distance that separates them. Apical rim of S4 bare medially, narrowly depressed. S5 disc slightly canaliculate medially towards the apex. Apical margin of S5 slightly emarginate, gradulus deeply angulate towards base. Gradulus of S6 indistinct but 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 rounded basally. Gonocoxa compressed laterally, with some long setae apically, longer than penis valve in length.

Variation. In some specimens of both sexes, the clypeus, scape, most of the mesepisternum and T2–T3 are red. The axilla in some specimens is pointed.

Comments. This species was previously considered as incertae sedis by Ascher & Pickering (2014) and Moure et al. (2012).

Floral Records. Unknown.

Host Records. Unknown.

Geographical Distribution. Argentina (Entre Ríos, Formosa), Brazil (Acre, Amapá, Amazonas, Minas Gerais, Pará, São Paulo), Venezuela (Guárico) ( Fig. 4).

Material examined. Syntypes (4). BRAZIL. Amapá. 1 female ( ZMB). “ Guyana brasil., R. Villanova, 26.10.1900, Ducke”. “ Coelioxys clypearis, 1913 Friese Fr. det.”. “ Paratypus ”. “Zool. Mus., Berlin”. Pará. 1 female ( ZMB). “R. Arrayollos, 21.4.1903, Ducke”. “ Coelioxys clypearis, 1904 Friese Fr. det.”. “ Lectotypus ”. “ Type ”. “Zool. Mus., Berlin”. 1 female ( ZMB). “R. Arrayollos, 21.4.1903, Ducke”. “ Coelioxys clypearis, 1904 Friese Fr. det.”. 1 female ( ZMB). “ Brasil, Para, 4. 1903, Ducke”.

Additional material: ARGENTINA. Entre Ríos. 1 female ( PCYU). “ ARGENTINA Entre Ríos, El Palmar, S 31º52.119’W 058º13.868’, 15.iv.2008 Sweep Net, A. Taylor PCYU-ATARG 90”. Formosa. 1 female ( PCYU). “ ARGENTINA Formosa, Pilcomayo, S 25º07.345’W 059º11.556’, 12.iv.2008 Sweep Net, A. Taylor PCYU- ATARG 144”. BRAZIL. Acre. 1 female ( DZMG). “ Brasil, AC, Acrelândia, Fazenda Jéssica, 09º55’43.1”S, 66º58’19.1”W, 7.xii.2012 Ninho Arm., F. Pacheco Jr., UFMG IHY, 1308759”. 1 male ( DZMG). “ Brasil, AC, Rio Branco, Embrapa Acre, 10º01’30.7”S, 67º41’35.2”W, 19.xii.2011 Ninho Arm., F. Pacheco Jr., UFMG IHY, 1308755”. Amazonas. 1 male ( RPSP). “ BRASIL Am. Manaus, I da Marchantaria, Rio Solimoes, 18/1/ 1991, M.V.B. Garcia”. “75”. “ Rhinocoelioxys ”. Minas Gerais. 1 male ( DZMG). “Abelhas da Zona, Metalúrgica, Campus UFMG, 3457 - 10130”. “Belo Horizonte MG, Brasil 14/03/97, D. A. Yanega”. “ Coelioxys (Rhinocoelioxys) cfr. clypeata Smith, 1879 , F.A. Silveira, det. 2000”. São Paulo. 1 male ( BBSL). “Campinas Bz, Sao Paulo, XI-5-72 ”. “R M Bohart, Colr”. “ Coelioxys (Rhin.) cf. rostrata, Friese, 1922 [sic] (=1921), Det. L. Correia da Rocha, Filho 2013, BBSL 878159”. 1 male ( BBSL). Idem, except BBSL 878160. 1 male ( BBSL). Idem, except BBSL 878161. VENEZUELA. Guárico. 1 female and 1 male ( USNM). “ VENEZUELA: Guarico, Hato Masaguaral, (44km S Calabozo), May 11–19 1985, Menke & Carpenter”.

Figures

FIGURE 5. Coelioxys clypearis. Female (A – D): A. Lateral view, B. Frontal view of head, C. Dorsal view of mesoscutum and mesoscutellum, D. Ventral view of S 5. Male (E – I): E. Lateral view, F. Lateral view of head and mesosoma, G. Dorsal view of T 2 and T 3, H. Dorsal view of T 5 and T 6, I. Ventral view of S 4 and S 5. (Scale bar = 1.5 mm).