Tootfinder

Looking for insects inside inflorescences of yarrow (Achillea millefolium). Turns out there's a fly or a wasp inside almost every single fruit. #wasps #flies #microscope #yarrow #insects

I'm chilling some sprigs of yarrow (Achillea millefolium) to slow down some tiny wasps I'd like to photograph. I'd wager there were 2-3 individuals on each inflorescence, and seemingly all the same kind. The flowers were too dry to offer any kind of nectar reward so I'm assuming the wasps are there to parasitize something developing inside yarrow fruits. #wasps #yarrow #insects #achillea

In case anyone needs to know, if you jostle an inflorescence of yarrow over a piece of white paper, very small (1 mm) wasps fall out. Most tend to hop around instead of flying away. Extremely hard to photograph, disappearing and reappearing like miniature Nightcrawlers from the X-Men universe. Am going to chill some plants to slow them down, so stay tuned if you're interested. You're interested, right?? #wasps #yarrow #achillea #insects #hymenoptera

Small (~1.25mm) wasp that I've been finding in large numbers on yarrow growing in my yard. I'll probably never be sure, but my guess is that it's Aprostocetus anodaphus (Eulophidae), an endoparasite of Ozirhincus millefolii (Cecidomyiidae), which I've found on the same inflorescences in equally large numbers. As far as I know it has never been reported in North America. Please go out and check for them if you have yarrow and a macro lens. #wasps #hymenoptera #yarrow #achillea #flies #parasite #nature #insects #macrophotography