Mating pairs of Xylomya tenthredinoides versus simillima

I previously separated these two species by the amount of red on the hind femur, but photos of mating pairs suggest this isn't a reliable distinction. The following linked mating pairs appear to represent the below species:

X. tenthredinoides

X. simillima

Based on these observations and consulting Webb 1984, I propose the following differential diagnosis for the two species:

由使用者 edanko edanko2021年08月03日 01:12 所貼文


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