Antennal-modification
Guides
Helluomorphoides
Flat-horned Ground Beetles
Helluomorphoides is a genus of ground beetles in the family Carabidae, established by Ball in 1951. The genus contains more than 20 described species and is classified within the subfamily Anthiinae and tribe Helluonini. These beetles are commonly referred to as Flat-horned Ground Beetles, a name reflecting a distinctive morphological feature of the group.
Knowltonia
Burnleafs
Knowltonia is a genus of jewel beetles (family Buprestidae) in western North America. The genus contains four species characterized by extreme sexual dimorphism in antennae: males possess highly modified, bipectinate (biflabellate) antennae with dual projections from terminal antennomeres, while females retain unmodified serrate antennae. This antennal modification is presumed to function in detecting female sex pheromones. The genus is notable for its independent evolution of male antennal elaboration similar to that seen in the tribe Xenorhipidini and other disparate buprestid taxa.
Strongylophthalmyia
Strongylophthalmyia is a genus of slender, long-legged flies in the family Strongylophthalmyiidae. Most species occur in the Oriental and Australasian regions, with some extending into the Palearctic. Males exhibit highly modified antennal structures with variable processes on the first flagellomere. The genus contains approximately 40 described species, including several named in honor of public figures.