Fig. 3

Themira biloba larval epidermis (a) with ventral histoblast nests in abdominal segments enlarged showing a sexually dimorphic increase in nest size, cell number, and cell density peaking in the 4th abdominal segment (b-h). The 4th female histoblast nest is not significantly larger than nests in other segments and is shown for comparison (i). Scale bars indicate 500 μm (a) and 25 μm (b-i)