fulcro-cranial muscle
(ARTHROPODA: Insecta)
1. A muscle arising from the postoccipital phragma or ridge and inserted on the fulcrum in the thysanuran Lepismodes and mayfly nymphs.
2. In the blattoid Periplaneta and lower apterygotes, a muscle arising from each of the posterior tentorial arms.

Online Dictionary of Invertebrate Zoology. . 2005.

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