Strumigenys doryceps

The two known specimens of this species, both workers, were collected in rainforest.

Identification
Bolton (2000) - A member of the Strumigenys probatrix-group. The two known species of the group are differentiated as follows.

S. doryceps: Fully closed mandibles in full-face view with outer margins bulging outwards basally. Anterior clypeal margin narrowly rounded. Hairs on clypeal margins fine and simple, strongly curved. Preapical (fourth) funicular segment same width as apical. Metapleuron and side of propodeum smooth. Disc of postpetiole smooth. Propodeum with a pair of thin spines, subtended by narrow carinae down declivity.

Strumigenys probatrix: Fully closed mandibles in full-face view with outer margins not bulging outwards basally. Anterior clypeal margin terminating in a blunt point. Hairs on clypeal margins short and spatulate, very weakly curved. Preapical (fourth) funicular segment b roader than apical. Metapleuron and side of propodeum reticulate-punctate. Disc of postpetiole reticulate-punctate. Propodeum with a pair of triangular teeth, subtended by laminae down declivity.

Distribution based on Regional Taxon Lists
Neotropical Region: Colombia, Ecuador.

Nomenclature

 *  doryceps. Pyramica doryceps Bolton, 2000: 211 (w.) ECUADOR. Combination in Strumigenys: Baroni Urbani & De Andrade, 2007: 119

Worker
Holotype. TL 2.2, HL 0.59, HW 0.35, CI 59, ML 0.13, MI 22, SL 0.34, SI 97, PW 0.24, AL 0.66. With head in full-face view outer margins of mandibles bulge outwards basally beyond the line of the clypeal margin. Anterior clypeal margin narrowly rounded, the dorsum mostly smooth. Clypeus laterally and dorsally with simple short hairs that are curved or flexuous; similar but longer hairs present all over cephalic dorsum and dorsal alitrunk. Mesonotum with a single pair of long flagellate hairs; such hairs also present on waist segments and gaster. Combined lengths of funiculus segments 4 plus 5 slightly greater than SL but thickness of segment 4 no greater than that of 5 and only slightly broader than scape. Dorsal surfaces of head behind clypeus, alitrunk and petiole sculptured, but disc of postpetiole, pleurae and side of propodeum smooth and shining. Basigastral costulae quite sharply developed but very short. Petiole in profile with peduncle grading into node, the latter without a sharply differentiated anterior face. Propodeal spines elongate and thin, each subtended by a narrow carina on the declivity rather than an obvious lamella.

Paratype. TL 2.1, HL 0.58, HW 0.36, CI 62, ML 0.13, MI 22, SL 0.35, SI 97, PW 0.24, AL 0. 66.

Type Material
Holotype worker, Ecuador: Provo Pichincha, 4 krn. E Santo Domingo de los Colorados, 520 m., 22.vi.1975, rainforest, B-304 (S. & J. Peck). Paratype, 1 worker from same locality as holotype but 8.vii.1976 (S. & J. Peck).

References based on Global Ant Biodiversity Informatics

 * Fernández, F. and S. Sendoya. 2004. Lista de las hormigas neotropicales. Biota Colombiana Volume 5, Number 1.