Key to Dorylus subgenera workers
Images to add |
This key is based on Gotwald, W. H., Jr. 1982. Army ants. Pp. 157-254 in: Hermann, H. R. (ed.) Social insects. Volume 4. New York: Academic Press, 385 pp.
This subgeneric classification system was subsumed under the specie groups suggested in: Borowiec, M.L. 2016. Generic revision of the ant subfamily Dorylinae (Hymenoptera, Formicidae). ZooKeys 608: 1-280 (doi:10.3897/zookeys.608.9427).
The link for each terminal lug brings you to a list of species for the respective species-group.
1
- Antenna, 12 segments…..Dichthadia = Dorylus laevigatus-group (Borowiec 2016)
- Antenna, 9-11 segments.....2
2
return to couplet .....1
- Antenna, 9 segments…..Alaopone = Dorylus orientalis-group (Borowiec 2016)
- Antenna, 10-11 segments.....3
3
return to couplet .....2
- Pygidial impression with sharp, well defined margins.....4
- Pygidial impression without distinct margins.....5
4
return to couplet .....3
- Antenna short and thick, all segments of the flagellum except the last as wide or wider than they are long; each frontal carina usually armed with a caudally projecting spine …..Dorylus (subgenus) Dorylus s. str. = includes all but two species in Dorylus helvolus-group and two species comprising entire Dorylus politus-group (Borowiec 2016)
- Antenna long and slender, at least some segments of flagellum longer than wide; frontal carina never armed with spines …..Anomma = includes entire Dorylus nigricans-group and two species in Dorylus helvolus-group (Borowiec 2016)
5
return to couplet .....3
- Subapical tooth of mandible simple; frontal carina in lateral view drawn to a ventrally directed point; promesonotal suture only slightly impressed…..Typhlopone = Dorylus fulvus-group (Borowiec 2016)
- Subapical tooth either truncate or notched at the middle; frontal carina in lateral view rounded, not pointed; promesonotal suture deeply impressed…..Rhogmus = Dorylus fimbriatus-group (Borowiec 2016)