Figures 4-7. Morphological structures. 4 in The variegated mud-loving beetles (Coleoptera: Heteroceridae) of Mississippi and Alabama, with discussion and keys to the species occurring in the southeastern United States

Figures 4-7. Morphological structures. 4) Right antenna of Heterocerus pallidus. Borders of the eleven antennomeres are difficult to distinguish due to pubescence and have been highlighted. 5a) Hypermandibulate male of Heterocerus intermuralis. 5b) Female (generally similar to "normal" males). 6) Venter of Augyles auromicans exhibiting some taxonomically important structures. 7) Dorsal aspect of Heterocerus sandersoni exhibiting conspicuous longitudinal striations on the elytra. Scale line = 1mm.