| Cataulacus mocquerysi|
This small and relatively uncommon species nests in hollow twigs on bushes and trees. A nest examined at the Cocoa Research Institute of Ghana during August 1970 had been made in a dry, hollow twig on a shrub, and was about 3 inches long by 0.25 inch wide. This contained a queen and seven rather small workers along with a number of brood. The workers wander over the bark and leaves of the tree in which the nest is situated but their feeding habits have not been observed. (Bolton 1974)
A member of the intrudens group. The species is characterized by, and is immediately recognizable because of the unique form of the pedicel segments and the great reduction or virtual loss of the propodeal spines.
Keys including this Species
Distribution based on Regional Taxon Lists
Distribution based on specimens
Cataulacus mocquerysi has been observed in the canopy of a secondary-forest tree, in sampling conducted in tree crowns, in Gamba, Gabon. It was anecdotally reported to subordinate at a tuna bait. C. mocquerysi has been shown to exhibit directed movement while in freefall that allows workers that fall or purposely detach from a tree to glide back and regain a hold on the same tree trunk. This gliding behavior is shared with numerous members of the tribe Cephalotini, and other genera as well. (Yanoviak et al. 2005, 2007, 2008)
The following information is derived from Barry Bolton's New General Catalogue, a catalogue of the world's ants.
- mocquerysi. Cataulacus mocquerysi André, 1889: 229 (w.) SIERRA LEONE. Bolton, 1974a: 48 (q.). Senior synonym of nainei: Bolton, 1974a: 47.
- nainei. Cataulacus mocquerysi var. nainei Forel, 1918a: 724 (w.) DEMOCRATIC REPUBLIC OF CONGO. Junior synonym of mocquerysi: Bolton, 1974a: 47.
Unless otherwise noted the text for the remainder of this section is reported from the publication that includes the original description.
Bolton (1974) - TL 4.0 - 5.5, HL 1.00 – 1.40, HW 1.12 – 1.54, CI 110 - 115, EL 0.46 – 0.56, OI 35 - 41, IOD 0.94 – 1.24, SL 0.60 – 0.72, SI 46 - 53, PW 1.02 – 1.48, AL 1.02 – 1.44, MTL 0.56 – 0.60 (10 measured).
Sculpturation of head and dorsal alitrunk of a fine, loose rugoreticulum with reticulate-punctate interspaces. In some individuals the rugulae tend to assume a longitudinal direction, especially upon the head. Dorsum of petiole similarly sculptured or merely reticulate-punctate; the most common form has numerous fine longitudinal rugulae. Postpetiole more coarsely sculptured, usually with coarse rugae directed longitudinally. First gastral tergite finely and densely reticulate-punctate.
Stout, erect hairs present upon all dorsal surfaces of the head, body and appendages.
Bolton (1974) - TL 6.8, HL 1.54, HW 1.56, CI 101, EL 0.56, OI 36, IOD 1.22, SL 0.76, SI 48, PW 1.44, AL 1.94, MTL 0.86.
Similar to worker but the rugose part of the sculpturation tending to be more coarse everywhere, and the denticulation of the sides of the head and pronotum to be reduced. Propodeum with a pair of bluntly rounded angles.
Bolton (1974) - Holotype worker, SIERRA LEONE (MNHN, Paris) [examined].
Cataulacus mocquerysi var. nainei Holotype worker, ZAIRE (H. Kohl) (MHN, Geneva) [examined].
- André, E. 1889. Hyménoptères nouveaux appartenant au groupe des Formicides. Rev. Entomol. (Caen) 8: 217-231 (page 229, worker described)
- Bolton, B. 1974a. A revision of the Palaeotropical arboreal ant genus Cataulacus F. Smith (Hymenoptera: Formicidae). Bull. Br. Mus. (Nat. Hist.) Entomol. 30: 1-105 (page 48, queen described; page 47, Senior synonym of nainei)
- Yanoviak, S. P., R. Dudley, and M. Kaspari. 2005. Directed aerial descent in canopy ants. Nature. 433:624-626.
- Yanoviak, S. P., B. L. Fisher, and A. Alonso. 2007. Arboreal ant diversity (Hymenoptera: Formicidae) in a central African forest. African Journal of Ecology. 46:60-66.
- Yanoviak, S. P., B. L. Fisher, and A. Alonso. 2008. Directed aerial descent behavior in African canopy ants (Hymenoptera: Formicidae). Journal of Insect Behavior. 21:164-171.