Oxyepoecus rosai
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BibTeX: @article{Albuquerque2009PapeisAvulsosdoDepartamentodeZoologia49, RIS/ Endnote: TY - JOUR Wikipedia/ Citizendium: <ref name="Albuquerque2009Papeis Avulsos do Departamento de Zoologia49">{{Citation See also the citation download page at the journal. |
Ordo: Hymenoptera
Familia: Formicidae
Genus: Oxyepoecus
Name
Oxyepoecus rosai Albuquerque, N. L. de, 2009 – Wikispecies link – Pensoft Profile
- Oxyepoecus rosai Albuquerque, N. L. de, 2009, Papeis Avulsos do Departamento de Zoologia 49: 304-307.
Description
(Figs. 5a-c, 8)
Materials Examined
OxyepoecusHNS rosaiHNS n. sp. Albuquerque & Brandao. Holotype: worker. Brazil: Sao Paulo: Salesopolis [23°39'S, 45°53'W], 20-26.x.1997, C. Klingenberg& C.I. Yamamoto col., attracted to sardine baits; deposited in MZSP. Paratypes (all from Brazil): Sao Paulo: forty one workers and two gynes from Salesopolis (Same locality of the Holotype, but collected in different dates and by different collectors); 33 workers and 2 gynes deposited in MZSP, one worker deposited in AMNH, one worker deposited in CASC, one worker deposited in CECL, one worker deposited in CPDC, one worker deposited in ICNC, one worker deposited in LACM, one worker deposited in MIZA, one worker deposited in USNM.
Etymology
Etymology: we are pleased to dedicate this species to our friend and colleague, Rogerio Rosa da Silva, the most efficient collector in our team.
Description
Worker (Holotype and paratypes (N = 33) variation within brackets): t.l. = 2.33 (2.30-2,40); h.l. = 0.60 (0.60-0.63); h.w. = 0.45 (0.43-0.48); s.l. = 0.35 (0.35-0.38); m.l.e. = 0.10 (0.10-0.13); m.w.pr. = 0.33 (0.30-0.35); a.l. = 0.65 (0.65-0.68); h.f.l. = 0.35 (0.35-0.38); m.w.p. = 0.20 (0.20-0.23); m.w.pp. = 0.25 (0.25-0.28); c.i. 75 (72-76). Color chestnut brown, gaster fuscous. Irregularly costulae and rugulate sculpture covering almost all head dorsum integument, except by clypeus, around antennal insertions and vertex; almost all mesosoma irregularly reticulate, except antero-lateral portion of pronotum, area around propodeal spiracle, petiolar peduncle dorsum, node of petiole and postpetiole smooth and shining. Hairs moderately abundant, short and subdecumbent, on head dorsum mesad oriented, anteriorly curved on head sides; dorsum of mesosoma with suberect hairs, backwards oriented on petiolar and postpetiole nodes; gaster without interspersed shorter and decumbent hairs. Head as in Fig. 5a (f.f.v.): Mandible with basal border slightly shorter than chewing border, basal tooth separated from subbasal tooth by shallow diastema. Anterior tooth of clypeus mesially directed with smaller lateral denticle. Frontal carinae gently convex and subparallel over antennal sockets, maximum width between outer edges always less than one fourth head width. Compound eye with 4-5 facets r.g.d., height less than oculomalar; total number of ommatidia not exceeding 13. Antennal scape fails to reach vertexal corner by distance approximately equal to maximum scape width. Funnicular segment I longer than II-V combined, segments II-VII distinctly broader than long, VIII and IX as long as broad. Vertexal margin straight. Mesosoma with promesonotum gently rounded on shoulders. Metanotal groove almost indistinct (p.v.). Basal face of propodeum immarginate on sides, posteriorly with a small tooth. Declivous face laterally weakly carinate. Petiole pedunculate, node scarcely compressed antero-posteriorly (d.v.) club shaped; subpetiolar process with a small, blunt and obliquely oriented denticle anteriorly. Postpetiole very broad, not as high as petiolar node; subpostpetiolar process shaped as small, transversal crest.
Gyne (variation of gynes paratypes, N = 2): t.l. = (2.80-2.93); h.l. = (0.60-0.63); h.w. = (0.50-0.53); s.l. = (0.40-0.43); m.l.e. = (0.25-0.30); m.w.pr. = (0.43-0.45); a.l. = (0.70-0.73); h.f.l. = (0.38-0.40); m.w.p. = (0.18-0.20); m.w.pp. = (0.33-0.35); c.i. (83-85). Almost same workers character states, with caste differences of: three ocelli very small, with same diameter, approximately half minimum thickness of antennal scape, compound eye with 8 facets r.g.d., and circa 40 in whole eye.
Male: Unknown.
Discussion
Comments: In the RastratusHNS species-group, O. rosai workers present the integument of mesopleuron and lateral pronotum irregularly sculptured, as in O. myops, but differs from the later by the larger compound eyes, and by the smooth integument on the head vertex and lateral portions of the pronotum, petiolar node, and postpetiole. The distribution of O. rosai includes only localities at South and Southeastern Brazil, between Sao Paulo and Santa Catarina States (Fig. 8). The specimens were attracted to sardine baits or recovered from the leaf-litter using Winkler extractors.
Materials Examined
Examined material: BRAZIL: Parana: Tunas, Parque das Lauraceas, 21-29.ii.2001, [R.R.] Silva and [F.] Eberhardt cols., transecto 1 Winkler 44 [24°51'S, 48°43'W] (1 [worker]); Rio de Janeiro: Teresopolis, P[arque] N[acional] da S[erra] dos O[rgaos], 23-27.xi.1999, Rocha [R.P.], Dietz [B.H.], Silva [R.R.] cols., Winkler # 07 and 17 [22°27'S, 42°59'W] (3 [worker]); Santa Catarina: Blumenau, P[arque] E[stadual] das Nascentes, 20-27. x.2000, Silva, R.R. and Eberhardt, F. cols., Winkler # 18 [27°06'S, 49°09'W] (2 [worker]); Palhoca, P[arque] E[stadual] Serra do Tabuleiro, 02-10.vi.2003, Silva, R.R. and Dietz, B.H. cols., [27°44'S, 48°41'W] (1 [worker]); Sao Bonifacio, P[arque] E[stadual] Serra do Tabuleiro, 08-13.iii.2004, Silva, R.R.; Dietz, B.H. and Albuquerque, N.L. cols., Winkler # 02, 08, 12, 13 and 14 [27°49'S, 48°54'W] (10 [worker]); Seara, vi-vii.1999, Rogerio R. Silva col. 27°09'S, 52°18'W (5 [worker]); Sao Paulo: Botucatu, 08.ix.1986, Forti, L.C. col [22°53'S, 48°26'W] (5 [worker]); Salesopolis, 02-06.v.1997, D. Agosti, C.R.F. Brandao and C.I.Yamamoto col., [23°39'S, 45°53'W] (16 [worker] paratypes and 1 [gyne] paratype); same locality, 12-17.vi.1997, C.I.Yamamoto col, same coordinates(1 [worker] paratypes); same locality, 05-07.vii.1997, C.I.Yamamoto col, same coordinates (9 [worker] paratypes); same locality, 05-07.ix.1997, C.I.Yamamoto col, same coordinates (2 [worker] and 1 [gyne] paratypes); same locality, 20-26.x.1997, C. Klingenberg & C.I. Yamamoto col., attracted to sardine baits (Sardinha) (1 [worker] holotype and 1 S paratype); Sao Paulo, Parque da Independencia, 12.x.1998, C.I.Yamamoto col., [23°35'S, 46°36'W] (1 S Paratypes).
Taxon Treatment
- Albuquerque, N. L. de; Brandão, C. R. F.; 2009: A revision of the Neotropical Solenopsidini ant genus Oxyepoecus Santschi, 1926 (Hymenoptera: Formicidae: Myrmicinae). 2. Final. Key for species and revision of the rastratus species-group., Papeis Avulsos do Departamento de Zoologia 49: 304-307. doi
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