Dorymyrmex incomptus

Nothing is known about the biology of .

Identification
Snelling (1975) - Worker: Blackish, head more or less ferruginous; basalmost setae of psammophore below occipital foramen; vertex and occiput dull, sharply differentiated from shiny frons; basal face of propodeum, in profile, distinctly impressed in front of low, obtuse tubercle.

Distribution based on Regional Taxon Lists
Neotropical Region: Chile.

Nomenclature

 *  incomptus. Araucomyrmex incomptus Snelling, R.R. 1975: 13, figs. 18, 19 (w.) CHILE. Combination in Dorymyrmex: Shattuck, 1992c: 85.

Worker
HL 0.72-0.80 (0.78); HW 0.60-0.65; SL 0.73-0.80 (0.77); PW 0.40-0.43 (0.43); WL 0.97-1.03 (1.03).

Head. Conspicuously longer than broad, CI 79-85 (81); sides, in frontal view, widest at eye level, weakly sinuate below eye level or not sinuate; occipital margin flattened or very weakly convex in frontal view. Scape about as long as head, SI 121-128 (123), extending beyond occiput by about 0.25 x its length. Eye large, OMD 1.00-1.08 (1.00) x EL. Apical margin of clypeus, in frontal view, straight or weakly concave in middle.

Thorax. Slender, PW 0.40-0.43 (0.42) x WL. Mesonotum, in profile, evenly convex, not angulate beyond middle. Propodeum, in profile, distinctly depressed in front of tubercle; tubercle low, obtuse.

Vestiture. Pubescence short, scattered on most of head, conspicuous only on vertex and occiput; thoracic pubescence a little sparser than that of occiput; that of gaster similar but a little longer, becoming very sparse on sides of terga.

Cephalic setae sparse; apical clypeal margin only, with long setae, those of disc and basal margins short; frontal lobes with seta pair near clypeal base and a longer pair at level of lower eye margin; no occipital setae; basalmost setae of psammophore below level of occipital foramen. Pronotal disc with a single, median, seta pair; mesonotum and propodeum without setae. First gastric tergum with a few setae at about midlength of dorsal face and a few in preapical row; remaining terga with scattered discal and a few preapical setae. Scape without setae except at tip. Fore femur with two or three setae on basal half of ventral margin; mid and hind femora without setae on dorsal margin; tibiae without setae.

Integument. Midline of clypeus smooth and shiny, remainder lightly shagreened and moderately shiny; frontal lobes and frons moderately to very weakly shagreened, with scattered micropunctures, moderately shiny; vertex and occiput abruptly differentiated, closely shagreened and micropunctate, barely shiny; malar area and side of head moderately shiny, weakly shagreened. Thorax and gaster closely shagreened and micropunctate, slightly shiny.

Color. Head dark ferruginous, becoming lighter at sides and toward mandible, darkest (almost dark brown) on occiput; thorax and gaster blackish. Appendages dark brownish.

Type Material
Holotype and II paratype workers: Chile, Prov. Coquimbo: Cerro Tololo, ca. 10 km W, 3 km S of Vicuna, 16 Oct. 1971 (J. H. Hunt, #439); holotype and most paratypes in ; two paratypes each in and.

Etymology
L., incomptus, unadorned or simple, because of the reduced setation.