Pheidole tristis (F. Smith)
publication ID |
20017 |
DOI |
https://doi.org/10.5281/zenodo.6275613 |
persistent identifier |
https://treatment.plazi.org/id/BB5D0CEE-1733-0010-ACBF-24F7B395B575 |
treatment provided by |
Donat |
scientific name |
Pheidole tristis (F. Smith) |
status |
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Pheidole tristis (F. Smith) View in CoL HNS
Myrmica tristis F. Smith HNS 1858a: 132, combination to Pheidole HNS by Mayr 1886c: 360. Syn.: Atta rubra F. Smith HNS 1858a: 168, combination to Pheidole HNS by Mayr 1886c: 360 and synonymy by Kempf 1965: 183; Pheidole emeryi HNS Mayr 1887: 589, synonymy by Kempf 1965: 183; Pheidole crassipes HNS Mayr 1887: 590, 600, n. syn.; Pheidole emeryi var. alsia HNS Santschi 1923d: 58, n. syn.
Types Nat. Hist. Mus. London.
Etymology L tristis HNS , sad, allusion unknown.
Diagnosis A medium-sized reddish-yellow (major) or yellowish brown (minor) member of the tristis HNS group whose major has very prominent subangulate pronotal humerus, swollen hind femora, diamond-shaped postpetiolar node with subangulate margins, small rounded subpostpetiolar process, and foveolate and opaque gastral tergite.
Minor: large ovoid postpetiolar node, prominent convex subpostpetiolar process, and foveolate and opaque gastral tergites. Similar to balzani HNS , fabricator HNS , and nigella HNS , and less so to brunnescens HNS , exarata HNS , excubitor HNS , germaini HNS , grandinodus HNS , hispaniolae HNS , grantae HNS , obrima HNS , prattorum HNS , rogeri HNS , sabina HNS , sarpedon HNS , stulta HNS , tristops HNS , unicornis HNS , and zoster HNS , differing in many details of body form, sculpturing, and pilosity, as illustrated, and in color.
measurements (mm) Major (Boraceia Biological Station, Sao Paulo state): HW 1.66, HL 1.76, SL 0.82, EL 0.20, PW 0.84. Holotype minor: HW 0.80, HL 0.84, SL 0.84, EL 0.12, PW 0.52.
Color Major: body and appendages clear light reddish yellow ("orange"), with gaster a shade darker. Minor: concolorous medium yellow brown, in both the Boraceia Biological Station series and holotype minor.
Range Kempf (1972b): southeastern Brazil (Santa Catarina, Sao Paulo, Rio de Janeiro, Parana) and north central Argentina (Misiones).
Biology Unknown.
Figure Upper: major (Boraceia Biological Station, Mun. Salesopolis, Sao Paulo state, Brazil, William L. Brown), associated with minors compared by E. O. Wilson with holotype minor from Tijuca, Rio de Janeiro, Brazil. At the bottom the right hind femur is depicted. Lower: holotype, minor (from Tijuca, Brazil). Scale bars = 1 mm.
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
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