morphometry 166 Argentina 76 Animals 62 morphology 60 animal 54 Morphometry 53 male 48 female 46 Male 44 Coleoptera 42 Female 42 Chaetotaxy 34 Dytiscidae 32 larva 32 beetle 30 taxonomy 30 Larva 26 article 26 controlled study 26 phenotype 26 Hygrobiidae 24 nonhuman 24 physiology 24 Article 22 anatomy and histology 22 body size 20 Hydroporinae 18 South America 18 Wings, Animal 18 adult 18