Pheidole triconstricta Forel

Wilson, E. O., 2003, Pheidole in the New World. A dominant, hyperdiverse ant genus., Cambridge, MA, USA: Harvard University Press, pp. -1--1: 241

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Pheidole triconstricta Forel


Pheidole triconstricta Forel  HNS 

Pheidole triconstricta  HNS  Forel 1886b: xlv. Syn.: Pheidole triconstricta var. ambulans Emery  HNS  1906c: 153, n. syn.; Pheidole radoszkowskii var. saviozae  HNS  Forel 191 le: 304, n. syn; Pheidole radoszkowskii var. discursans  HNS  Forel 1912g: 223, n. syn.; Pheidole triconstricta var. rosariensis  HNS  Forel 1913m: 230, n. syn.; Pheidole triconstricta var. hebe  HNS  Santschi 1923d: 55, n. syn.. Raised to species level in this monograph: bruesi  HNS  , laidlowi  HNS  , nubila  HNS  .

Types Mus. Hist. Nat. Geneve; Mus. Comp. Zool. Harvard.

etymology L triconstricta  HNS  , triply contracted, drawn together, evidently referring to the mesosoma, as seen in dorsal-oblique view.

Diagnosis A member of the diligens  HNS  group distinguished by the following combination of traits.

Major: yellow, dorsal surface of head and all of body, including gaster, virtually hairless; promesonotal profde in dorsal-oblique view 3-lobed; rugoreticulum present mesad to the eyes; sculpturing of head confined to the portion level with and anterior to the eyes; posterior half of dorsal head surface, and all of the gaster, smooth and shiny; all of mesosoma and waist foveolate and opaque. Minor: yellow; mesosoma bare of pilosity; all of head, mesosoma and waist, along with anterior strip of first gastral tergite, foveolate and opaque.

See also anima  HNS  , diligens  HNS  , gagates  HNS  , nubila  HNS  , piceonigra  HNS  , radoszkowskii  HNS  , and stigma  HNS  . measurements (mm) Lectotype major: HW 1.24, HL 1.26, SL 0.74, EL 0.22, PW 0.66. Paralectotype minor: HW 0.64, HL 0.66, SL 0.66, EL 0.12, PW 0.40. Color Major and minor: concolorous yellow.

Range Besides the types and other specimens from Argentina, I have seen specimens form Sao Paulo, Brazil, Bolivia (Faquira), and Argentina (San Miguel de Tucuman); Kempf lists triconstricta  HNS  in addition from Uruguay and Minas Gerais and Parana in Brazil.

Biology Males were present in a nest in San Miguel de Tucuman, Argentina, 18 January - 3 February (W. L. Brown).

figure Upper: lectotype, major. Lower: paralectotype, minor. ARGENTINA: Buenos Aires. Scale bars = 1 mm.