Metaphase and karyotype of the 2n = 4 chromosomes in <i>Strumigenys louisianae</i>; Giemsa staining (A) Karyotype with CMA<sub>3</sub> (B) and DAPI staining (C).

<p>Arrows indicate the positive marks for CMA<sub>3</sub>. m =  metacentric. Bar: 5 µm.</p>