White grub rastral patterns used in species identification are located in the anus , and can be observed with a 10X hand lens. June bug larvae, Phyllophaga spp., can be recognized by their seagull-shaped anal slit ( ) and by the two parallel rows of spines running longitudinally under the anus, Masked chafer larvae, Cyclocephala sp., can be recognized by their straight anal slit (–) and the random placement of spines beneath the anus. Dr. Dave Shetlar, Ohio State University.
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White grub rastral patterns used in species identification are located in the anus , and can be observed with a 10X hand lens. June bug larvae, Phyllophaga spp., can be recognized by their seagull-shaped anal slit ( ) and by the two parallel rows of spines running longitudinally under the anus, Masked chafer larvae, Cyclocephala sp., can be recognized by their straight anal slit (–) and the random placement of spines beneath the anus. Dr. Dave Shetlar, Ohio State University.
https://insects.tamu.edu/extension/publi...
This is not a mealworm.
It's a mealworm