Strumigenys sulumana

AntWiki: The Ants --- Online
Strumigenys sulumana
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Myrmicinae
Tribe: Attini
Genus: Strumigenys
Species: S. sulumana
Binomial name
Strumigenys sulumana
(Bolton, 1983)

Pyramica sulumana casent0178322 profile 1.jpg

Pyramica sulumana casent0178322 dorsal 1.jpg

Specimen labels

One of the two known collections of this ant was collected from a Teclea nobilis fogging-sample.

Identification

Bolton (1983) - A very distinctive small species of Serrastruma (= Strumigenys) immediately separated from all its congeners by its combination of narrow head with relatively long mandibles and extremely long scapes, reduced upper scrobe margins which lack flagellate hairs, inconspicuous cephalic ground pilosity, presence of humeral flagellate hairs but lack of specialized large hairs on the mesonotum, and vestigial spongiform tissue on the pedicel segments.

Keys including this Species

Distribution

Latitudinal Distribution Pattern

Latitudinal Range: -0.317° to -0.317°.

 
North
Temperate 		North
Subtropical 		Tropical South
Subtropical 		South
Temperate

Distribution based on Regional Taxon Lists

Afrotropical Region: Cameroun (type locality), Kenya.

Distribution based on AntMaps

AntMapLegend.png

Distribution based on AntWeb specimens

Check data from AntWeb

Countries Occupied

Number of countries occupied by this species based on AntWiki Regional Taxon Lists. In general, fewer countries occupied indicates a narrower range, while more countries indicates a more widespread species.
pChart

Estimated Abundance

Relative abundance based on number of AntMaps records per species (this species within the purple bar). Fewer records (to the left) indicates a less abundant/encountered species while more records (to the right) indicates more abundant/encountered species.
pChart

Biology

Castes

Nomenclature

The following information is derived from Barry Bolton's Online Catalogue of the Ants of the World.

  • sulumana. Serrastruma sulumana Bolton, 1983: 352 (w.) CAMEROUN. Combination in Pyramica: Bolton, 1999: 1673; in Strumigenys: Baroni Urbani & De Andrade, 2007: 128. See also: Bolton, 2000: 319.

Unless otherwise noted the text for the remainder of this section is reported from the publication that includes the original description.

Description

Worker

Holotype. TL 2.0, HL 0.50, HW 0.33, CI 66, ML 0.22, MI 44, SL 0.40, SI 121, PW 0.23, AL 0.58.

Small narrow-headed species with relatively long mandibles and very long scapes. Mandibles slender, serially finely denticulate, the apical tooth subspiniform and the denticles becoming gradually slightly larger towards the base. Rounded angle separating masticatory and basal margins of mandible surmounted by a thin translucent crest which follows the curve and represents the remains of the basal lamella. Anterior clypeal margin translucent and convex, overhung by the false clypeal margin which is equipped with anteriorly projecting hairs. Antennal scrobes vestigial, the dorsum rounding into the sides except in front of the level of the eye where a feebly angular upper scrobe margin remains. The eyes freely visible in full-face view on the ventrolateral margins of the head because of the disappearance of the upper scrobe margins which partially or wholly obscure them in most other members of the genus. Occipital corners evenly rounded, the occipital margin shallowly concave. Antennal scapes very long and slender, subcylindrical, slightly increasing in thickness from base to apex, the leading edges only with fine curved hairs, without bizarre projecting pilosity. Ground-pilosity of head of inconspicuous curved narrowly spatulate hairs. A transverse row of 4 stouter more erect hairs present paralleling the occipital margin but the head without flagellate hairs. Dorsum of head finely and densely reticulate-punctate. Pronotum not marginate laterally, the humeri broadly rounded and each with a long fine flagellate hair. In profile the posterior half of the mesonotum descending steeply to the broadly impressed metanotal groove. Propodeal dorsum elevated behind the level of the metanotal groove then sloping shallowly backwards. Propodeal teeth elevated, long and narrowly triangular, without an infradental lamella. Sides and dorsum of alitrunk evenly and densely reticulate-punctulate everywhere. Dorsal alitrunk with inconspicuous curved narrowly spatulate pilosity, the mesonotum without standing specialized hairs such as are usually seen in Serrastruma species. Petiole and postpetiole reticulate-punctate everywhere, the gaster smooth and with vestigial basal costulae. Spongiform appendages of pedicel segments very reduced. In profile the subpetiolar appendage reduced to a narrow translucent strip and the subpostpetiolar lobe represented only by a thin laminar fringe around the curve of the sternite. In dorsal view the petiole and postpetiole each with minute vestiges of their respective transverse posterior spongiform strips, the best developed section being at the posterolateral angles of the postpetiole. Petiole, postpetiole and gaster dorsally with a number of erect to suberect quite stout hairs which are thickened apically. Colour pale yellow.

Paratype. TL not measurable as pedicel segments and gaster missing, HL 0.56, HW 0.36, CI 64, ML 0.25, MI 45, SL 0.46, SI 127, PW 0.24, AL 0.62. As holotype.

Type Material

Holotype worker, Cameroun: nrYaounde, sample SK (G. Terron) (Ecole Nationale Superieure Agronomique). Paratype. 1 worker with same data as holotype (The Natural History Museum).

References

Retrieved from "https://antwiki.org/wiki/index.php?title=Strumigenys_sulumana&oldid=644096"