Pheidole sculptior , Wilson, E. O., 2003

Wilson, E. O., 2003, Pheidole in the New World. A dominant, hyperdiverse ant genus., Cambridge, MA: Harvard University Press, pp. -1--1: 506

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Pheidole sculptior

new status

Pheidole sculptior  HNS  Forel, new status

Pheidole flavens r. sculptior  HNS  Forel 1893j: 414.

Types Mus. Hist. Nat. Geneve.

Etymology L sculptior  HNS  , more engraved, presumably with reference to the more extensive sculpturing of the major head.

diagnosis A member of the " flavens  HNS  complex" within the larger flavens  HNS  group, comprising asperithorax  HNS  , breviscapa  HNS  , cardiella  HNS  , chloe  HNS  , exigua  HNS  , flavens  HNS  , goeldii  HNS  , moerens  HNS  , mittermeieri  HNS  , nuculiceps  HNS  , pholeops  HNS  , sculptior  HNS  , striaticeps  HNS  , and trinitatis  HNS  , differing in the following combination of traits.

Major: carinulae originating on frontal lobes and mesad to frontal carinae travel all the way to the occipital border, turning slightly away from the midline as they progress; shallow antennal scrobes present, their surfaces foveolate and opaque and bearing carinulae inside their anterior half; in dorsal-oblique view, promesonotal dorsal profile is weakly bilobous and descends posteriorly through a gentle gradient to the metanotal groove; pronotal dorsum foveolate and opaque, entirely lacking in carinulae; postpetiolar node trapezoidal viewed from above.

Minor: close to flavens  HNS  , with carinulae restricted to anterior half of head, and all of head, mesosoma, and side of waist foveolate and opaque.

Measurements (mm) Lectotype major: HW 0.78, HL 0.78, SL 0.42, EL 0.10, PW 0.34. Paralectotype minor: HW 0.38, HL 0.42, SL 0.36, EL 0.06, PW 0.24.

Color Major: mandibles and most of body light brownish yellow; gaster, antennae, and legs medium yellow. Minor: concolorous yellow.

Range Recorded by Kempf (1972b) from Puerto Rico, Martinique, St. Vincent, Trinidad, and Venezuela. I have confirmed series from Puerto Rico, St. Vincent, Trinidad, and Suriname.

biology On St. Vincent in the early 1890s, the avid collector H. H. Smith (in Forel 1893j) found sculptior  HNS  to be relatively scarce but very adaptable in habitat. Ranging from sea level to 500 m, it occurred in forests, seashore thickets, and open land. Nests were in loamy soil under pieces of dead wood or stones; one was found in a piece of rotten wood. The colonies were small, in one instance noted by Smith comprising about 200 workers. On Grenada in 1995, Stefan Cover and I found a colony under a rock in a banana plantation at 300 m. On Trinidad, Cover found two other colonies under the bark of rotting logs. A male was present with one of the latter on 19 May, and a winged queen with a Puerto Rico colony collected by J. A. Torres on 26 November.

Figure Upper: lectotype, major. Lower: paralectotype, minor. ST. VINCENT, WEST INDIES (H. H. Smith). Scale bars = 1 mm.