File:Apterostigma megacephala F4.jpg

Figure 4. Helcium and anterodorsal gastral area of Apterostigma auriculatum and Myrmicocrypta buenzlii. a, dorsal view in A. auriculatum; b, lateral view in A. auriculatum; c, dorsal view in M. buenzlii; d, lateral view in M. buenzlii. he = helcium. 10 = anterodorsal lobe.

[[Media:Lattke 1999b.pdf|Lattke, J. E. 1999b. A new species of fungus-growing ant and its implications for attine phylogeny (Hymenoptera: Formicidae). Systematic Entomology. 24:1-6. PDF]]