Table 1 in A detailed comparison of two species in the genus Potamanthus Pictet, 1843 from China (Ephemeroptera, Potamanthidae)

Table 1. Comparison of characteristics of the two Potamanthus species.
Characters SpeciesP. huoshanensisP. luteusNymphmandibular tusksnot protruding the labrumprotruding the labrumratio of maxillary palpi from base to apex1.0: 0.6: 1.01.0: 0.7: 1.3ratio of forefemora: tibiae: tarsi1.0: 0.7: 0.61.0: 0.8: 0.6Pairs of lateral dots on abdominal tergawithoutwithMale imagopigments of crossveins in forewingsvagueclearMA: MA11.0: 0.71.0: 0.9costal projection of hindwingsbluntsharpdistance between two compound eyesno or very shorthalf of median ocellusPairs of lateral dots on abdominal tergawithoutwithPenial lobes covered by subgenital platepartiallynoPosterior emargination of subgenital plateshallowV-shaped cleftratio of forefemora: tibiae: tarsi1.0: 1.3: 1.61.0: 1.6: 1.5Female imagopigments of crossveins in forewingsvagueclearMA: MA11.0: 1.01.0: 0.9Pairs of lateral dots on abdominal tergawithoutwith