Table 1 Results of MCMCglmm analyses testing correlation between trait groups. For details, see Additional file 5: Appendix S2

Female somatic size

-

Female external genital size

0.689*

-

Female copulatory opening width

ns

ns

-

Female internal genital size

ns

ns

ns

-

Male somatic size

ns

ns

ns

ns

-

Male non-intromittent enital size

ns

0.600*

ns

ns

0.573**

-

Male intromittent genital size

0.725*

0.809***

38.028*

ns

ns

0.594*

-

SSD

0.871***

ns

ns

ns

ns

ns

ns

-

SGD

ns

0.922***

ns

ns

ns

ns

0.655*

ns

-