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

Technomyrmex (Engramma) kohli (Forel)

return to key {link to the Hymenoptera Name Server} Type location Zaïre (Engramma Kohli n. sp., Forel, 1916: 429, worker & queen; combination in Technomyrmex by Shattuck, 1992b 161)
worker and queen only described (Bolton, 1995: 402) .

{Technomyrmex kohli}Forel's (1916) description of Engramma kohli is at {original description}.

Features (from Wheeler's 1922 key) - TL 1.8 to 2.2 mm. Head, without the mandibles, as broad as long, deeply excavated behind. Eyes less than one-third of face in length. Antennal scapes not reaching the occipital border; funicular joints 2 to 7 broader than long. Body relatively thick set; dorsum of propodeum much shorter than the declivity, sloping forward; pilosity less abundant. Dull yellow, with brown gaster but head and thorax shining.

Wheeler (1922, with the illustration) noted collections from - Niapu (Lang and Chapin); Lubutu to Kirundu; Tshopo River near Stanleyville (J. Bequaert). The specimens from Niapu were taken in the leaf ascidiae of Scaphopetalum thonneri De Wildeman and Durand; those from Lubutu to Kirundu in the similar structures of Cola laurentii De Wildeman; and those from the Tshopo River were found nesting in the stem swellings of a hairy Plectronia. The type specimens of the species were also taken by Father Kohl "in myrmecophilous plants" at St. Gabriel, near Stanleyville.

Bolton (2007) appears to have lumped all specimens of approximately the same general form, i.e. with a strongly cordiform head and deep semi-circular clypeal notch into a single species Technomyrmex laurenti (Emery). Although he acknowledges smaller specimens have a higher SI and relatively larger eyes he does not give any information on variation (if any) within specimens recorded from a specific nest. Colour variation is discounted as of any significance.

I have sighted specimens from two sites (nests) in Cameroun. The two nests were separate species of plant.The difference in the worker morphology is consistent and so marked that I cannot accept Bolton's lumping. Thus, the specimens of Technomyrmex kohli are kept separate and shown below. They are an exact match for Forel's decription - with no erect setae or evidence of setal insertions on the alitrunk, apart from two pairs on the pronotum and a pair at the apex of the propodeum. They have a very different pattern of pubescence to laurenti; and, are much shinier and generally lighter. This is supported by the 2103 availability of a cotype images on Antweb (below).

{Technomyrmex kohli}The photomontage of a cotype worker is collated from -

Oxford University Museum specimens

Technomyrmex kohli
B Taylor det.
G Debout & A Dalecky
Cameroon 21

2°34.05' N
9°54.01' E
from leaf-like pouch of Delpydora sp
2 points with 6 specimens


{Technomyrmex kohli}The photomontage is of specimens collected in Cameroun - south-western tropical coastal forest area between Edéa and Campo (McKey Wolbachia project, Cameroon 21) from location GRO (Grotte - at 2°34.05' N 9°54.01' E), 25 March 2001; from leaf-like pouch of Delpydora sp.

This exactly matches Forel's (1916) description in every detail, including the sparsity of erect pilosity or setae on the body (alitrunk).

{Technomyrmex kohli}The photomontage of a worker from Cameroun, Campo, is collated from -

Note: This was labelled by Bolton as laurenti and is among his list of speciemns examined under that species.  Hoiwever, it clearly closely matches my kohli, above.

© 2007, 2009, 2010, 2012, 2015 - Brian Taylor CBiol FSB FRES
11, Grazingfield, Wilford, Nottingham, NG11 7FN, U.K.