Does parasitism richness drive parasitism rate? Puerto Rico Farms

I'm kinda shaky in answering this question but here's what I found So I plotted the species richness of parasitoid wasps at a site versus the parasitism proportion (In this case, of all the leaf-miner pupae that were retrieved at a site, how many wasps emerged rather than leaf miners).

I split the points into two groups (high intensification sites and low intensification sites).

Nothing came up when using a linear model.