pro- + -gnathous
prognathous (comparative more prognathous, superlative most prognathous)
- Having jaws that project forward more than is usual.
2013, Adam Slipinski, Australian Beetles Volume 1: Morphology, Classification and Keys:
- Phycosecids are small, ovate, convex beetles with a prognathous head, partly covered by a semicircular projection of the pronotum and a dorsal vestiture of whitish scales or scalelike setae.
with jaws projecting forward