Ant species colour guide rough

Ant species colour guide rough for: Southern red wood ant Formica rufa, Hairy wood ant Formica lugubris, Scottish wood ant Formica aquilonia, Slender ant Leptothorax acervorum, Slave-making Blood red ant Formica sanguinea, Shining guest ant Formicoxenus nitidulus, and Narrow headed ant Formica exsecta.  These sketches were used to check the colouration before moving onto the final illustrations.