Pheidole pinealis Wheeler
publication ID |
20017 |
DOI |
https://doi.org/10.5281/zenodo.6274322 |
persistent identifier |
https://treatment.plazi.org/id/AF5C5990-BC9B-C9FB-3939-DBF251B2DB76 |
treatment provided by |
Donat |
scientific name |
Pheidole pinealis Wheeler |
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Pheidole pinealis Wheeler View in CoL HNS
Pheidole pinealis Wheeler HNS 1908h: 459.
Types Mus. Comp. Zool. Harvard; Amer. Mus. Nat. Hist.
Etymology Unknown.
diagnosis A member of the " bicarinata HNS complex" of the larger pilifera HNS group, comprising agricola HNS , aurea HNS , barbata HNS , bicarinata HNS , centeotl HNS , cerebrosior HNS , ceres HNS , defecta HNS , gilvescens HNS , macclendoni HNS , macrops HNS , marcidula HNS , paiute HNS , pinealis HNS , vinelandica HNS , xerophila HNS , yaqui HNS , and yucatana HNS , which complex is characterized by the large to very large, forward-set eyes, especially in the minor; and in the major, the occipital lobes lacking any sculpturing (except in aurea HNS ); the posterior half of the head capsule smooth and shiny; and the postpetiole seen from above oval, elliptical, or laterally angulate (cornulate in cerebrosior HNS ). P. pinealis HNS differs within the complex by the following combination of traits.
Major: dark spot on vertex; humerus in dorsal-oblique view right-angulate; petiole in side view tapers to a point, and from behind is deeply concave; postpetiolar lateral extension from above horn-shaped; erect pilosity of pronotum long and dense. Minor: humerus in dorsal-oblique view feebly subangulate; postpetiole from above roughly diamond-shaped. Measurements (mm) Lectotype major: HW 1.06, HL 1.24, SL 0.52, EL 0.14, PW 0.54. Paralectotype minor: HW 0.48, HL 0.54, SL 0.46, EL 0.10, PW 0.30.
color Major: head and mesosoma light brown with a slightly reddish tinge; center of head dorsum with contrasting circular dark brown spot, as illustrated; waist and gaster dark brown; appendages brownish yellow.
Minor: concolorous medium brown (brownish yellow, possibly faded, in paralectotype); appendages yellowish brown.
Range Known only from western Texas and a series from Guanajuato, central Mexico.
biology The type colony was found beneath a stone; the nest contained seed caches (Wheeler 1908h). In western Texas, Moody and Francke found three colonies, variously at 1000-1200 m, nesting, respectively, beneath a stone and cow dung and in open soil.
FIGURE Upper: lectotype, major. Lower: paralectotype, minor. TEXAS: Limpio Canyon, Ft. Davis, Davis Mts., Jeff Davis Co., southwestern Texas (W. M. Wheeler). 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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