The Ants of Africa
Genus Technomyrmex
Technomyrmex (Engramma) ilgi (Forel)

Technomyrmex (Engramma) ilgi (Forel)

return to key {link to the Hymenoptera Name Server} Type location Ethiopia (Engramma ilgi n. sp., Forel, 1910c: 264, worker & male) collected by Laurent - see below
junior synonyms
stygius (Engramma stygium n. sp., Santschi, 1911c: 363, worker & male; Santschi, 1914b, 117, queen) from Kenya, Nairobi, Ch. Alluaud, 1904 - see below
gowdeyi (Engramma gowdeyi, Wheeler, 1922: 207, illustrated, worker) from Uganda, Kampala, collector C.C. Gowdey - no images on Antweb (April 2015)
synonymies by Bolton (2007: 22) .

Forel's (1910c) description is at {original description}. Santschi's (1911c) description of stygius is at {original description}. Santschi's (1914b) description of stygius is at {original description}.

{Technomyrmex ilgi}Bolton's (2007) re-description is at {original description}. Althuogh Bolton does not mention it, the Forel type specimen (below) does not show any erect hairs and lacks the abundant fine pubescence on the Santschi type of stygium and the specimen from Zimbabwe.  Other ant web specimens match the latter two and the Forel specimen presumably is an old individual, as borne out by the obviously worn mandibles.

{Technomyrmex ilgi}The photomontage of the type worker is collated from -

{Technomyrmex stygium}The photomontage of the stygium type worker is collated from -

{Technomyrmex ilgi}The photomontage is collated from -
Collection Information: Specimen Code:SAM-HYM-C004792; Locality: Zimbabwe (S. Rhodesia): Manicaland: Nyanga [Inyanga]; Date: 12 Dec 1920.

{Technomyrmex gowdeyi}

Technomyrmex (Engramma) gowdeyi (Wheeler)

Type location Uganda (not Zare; Engramma gowdeyi new species, Wheeler, 1922: 207, Fig. 53, worker, illustrated), combination in Technomyrmex by Shattuck (1992b); all forms described (Bolton, 1995, where type location was wrong).

Wheeler (1922, with the illustration) wrote - The following species, though not from the Congo, may be most conveniently described in this place.

WORKER - Length 2.4 to 2.7 mm. Head without the mandibles distinctly longer than broad, broader behind than in front, with feebly concave posterior border and feebly convex sides. Eyes flat, in front of the middle of the head, about one-fifth as long as its sides. Mandibles convex, with about a dozen even, crowded teeth. Clypeal notch about one-fourth the length of the anterior border, broader than deep, with sharp, slightly produced corners. Posterior clypeal border distinct; frontal area and groove obsolete; frontal carinae nearer to the sides of the head than to each other. Antennal scapes extending about one-sixth their length beyond the occipital border; funicular joints 2 to 10 perceptibly longer than broad. Thorax short, seen from above with distinctly angular humeri; promesonotal and metanotal sutures distinct; pro- and mesonotum moderately convex, the latter broadly elliptical, slightly broader than long; metanotal constriction rather deep, acute. Propodeum as long as broad, broader behind than in front, in profile with a short base, rising rather steeply from the metanotal groove, one-fourth as long as the flat, backwardly sloping declivity. Petiole elliptical, flat, its node obsolete. Gaster rather voluminous, its first segment overlying the petiole; anus terminal. Legs rather slender. Shining; very finely and uniformly punctate.
Hairs sparse, blackish, erect, rather coarse, present on the clypeus, vertex, pronotum, mesonotum, and propodeum, and all the segments of the gaster. Pubescence grayish, short and fine, rather abundant, covering the whole body but not concealing the shining surface. Castaneous brown; thorax and anterior portion, of head paler; mandibles, insertions of antennae, funiculi, tarsi, and articulations of legs yellowish brown.

Described from numerous specimens taken by Mr. C. C. Gowdey at Kampala, Uganda. I at, first supposed this form to be E. ilgi subspecies stygium Santschi, described from British East Africa, but careful perusal of the description shows that it is quite distinct.

2007, 2010, 2012, 2014 - Brian Taylor CBiol FSB FRES
11, Grazingfield, Wilford, Nottingham, NG11 7FN, U.K.