Taxacom: name for type of axe shape

[John Grehan]

Mainly a curiosity question. Describing a valva on moth genitalia that has
a narrow, concave shaped stem then expands distally to form a broad blade
with convex distal edge and sharp corners each end - sort of like half of a
double headed battle axe as illustrated here il_fullxfull.2909846231_nrxg.jpg
(3000×2000)
<https://nam10.safelinks.protection.outlook.com/?url=https%3A%2F%2Fi.etsystatic.com%2F22821884%2Fr%2Fil%2F2c1e21%2F2909846231%2Fil_fullxfull.2909846231_nrxg.jpg&data=05%7C02%7Ctaxacom%40lists.ku.edu%7C2ff9bba3b9bb4b4d48f408de1ce7bcdc%7C3c176536afe643f5b96636feabbe3c1a%7C0%7C0%7C638979978792112146%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=MGTIU%2BwoWY4oo12MJLWceBz5DttV23EwvzZFNPBc0L4%3D&reserved=0>
Does anyone know of a standard terminology for this kind of blade shape?
Even if there is, it might not be practical if it's not familiar or
descriptive enough, or is too idiosyncratic. I looked over a lot of leaf
blade shapes, but none are like this. I saw a lot of terms for types of
axes, but not for the shape of axe blades separate from the axe as a whole..

Thanks,

John Grehan

-- 
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