Baron Cajetan von Felder was an Austrian lawyer, entomologist and liberal politician. He served as mayor of Vienna from 1868 to 1878.
Rudolf Felder was an Austrian jurist and entomologist. He was mainly interested in Lepidoptera, amassing, with his father, Cajetan Felder, a huge collection.
Hypochlorosis lorquinii is a butterfly in the family Lycaenidae. It is found on Maluku and Fergusson Island.
Eudonia trivirgatus is a moth in the family Crambidae. It was first described by Cajetan Felder, Rudolf Felder and Alois Friedrich Rogenhofer in 1875 as Crambus trivirgatus. It is endemic to New Zealand.
Curetis sperthis is a species of butterfly belonging to the lycaenid family. It is found in Southeast Asia.
Curetis tagalica, the Southern Sunbeam, is a species of butterfly belonging to the lycaenid family. It is found in Southeast Asia.
Jacoona anasuja is a butterfly in the family Lycaenidae. It was described by Cajetan Felder and Rudolf Felder in 1865. It is found in the Indomalayan realm.
Poritia sumatrae is a butterfly in the family Lycaenidae. It was described by Cajetan Felder and Rudolf Felder in 1865. It is found in the Indomalayan realm.
Jamides aleuas is a butterfly in the family Lycaenidae. It was described by Cajetan Felder and Rudolf Felder in 1865. It is found in the Australasian realm.
Euploea eyndhovii, the striped black crow, is a butterfly in the family Nymphalidae. It was described by Cajetan and Rudolf Felder in 1865. It is found in the Indomalayan realm.
Euploea hewitsonii, or Hewitson's dwarf crow, is a butterfly in the family Nymphalidae. It was described by Cajetan Felder and Rudolf Felder in 1865. It is found in the Australasian realm.
Euploea redtenbacheri, the Malayan crow or Redtenbacher's crow is a butterfly in the family Nymphalidae. It was described by Cajetan Felder and Rudolf Felder in 1865. It is found in the Indomalayan realm and the Australasian realm.
Euploea stephensii is a butterfly in the family Nymphalidae. It was described by Cajetan Felder and Rudolf Felder in 1865. It is found in the Australasian realm.
Euploea westwoodii, or Westwood's king crow, is a butterfly in the family Nymphalidae. It was described by Cajetan Felder and Rudolf Felder in 1865. It is found in the Celebes in the Australasian realm.
Charaxes harmodius is a butterfly in the family Nymphalidae. It was described by Cajetan Felder and Rudolf Felder in 1867. It is found in the Indomalayan realm.
Polyura jalysus, the Indian Yellow Nawab, is a butterfly in the family Nymphalidae. It was described by Cajetan Felder and Rudolf Felder in 1867. It is found in the Indomalayan realm.
Tajuria jalajala is a species of lycaenid or blue butterfly found in the Indomalayan realm
Arhopala antimuta or small tailess oakblue is a butterfly in the family Lycaenidae. It was described by Cajetan Felder and Rudolf Felder in 1865. It is found in the Indomalayan realm.
Arhopala arsenius is a butterfly in the family Lycaenidae. It was described by Cajetan Felder and Rudolf Felder in 1865. It is found in the Indomalayan realm where it is endemic to the Philippines.
Arhopala asinarus or broad-banded oakblue, is a butterfly in the family Lycaenidae. It was described by Cajetan Felder and Rudolf Felder in 1865. It is found in the Indomalayan realm.
