Halicyclops incognitus
Halicyclops coulli
Halicyclops ytororoma
Halicyclops herbsti
Halicyclops bowmani
Halicyclops tetracanthus
Halicyclops cenoticola
Halicyclops oryzanus
Halicyclops reidae
Halicyclops brevispinosus
(tree size 3)
Halicyclops laminifer
Halicyclops aberrans
Halicyclops clarkei
Halicyclops caneki
Halicyclops antiguaensis
Halicyclops similis
Halicyclops hurlberti
Halicyclops maculatus
Halicyclops venezuelaensis
Halicyclops exiguus
Halicyclops magniceps
Halicyclops fosteri
Halicyclops neglectus
(tree size 2)
Halicyclops laciniatus
Halicyclops aequoreus
(tree size 2)
Halicyclops ambiguus
Halicyclops aquaesurgentis
Halicyclops ariakensis
Halicyclops blachei
Halicyclops calm
Halicyclops canuensis
Halicyclops canui
Halicyclops caridophilus
Halicyclops christianensis
Halicyclops continentalis
Halicyclops crassicornis
Halicyclops cryptus
(tree size 2)
Halicyclops dalmatinus
Halicyclops dedeckeri
Halicyclops denticulatus
Halicyclops dussarti
Halicyclops eberhardi
Halicyclops electus
Halicyclops fimbriatus
Halicyclops gauldi
Halicyclops glaber
Halicyclops harpacticoides
Halicyclops higoensis
Halicyclops itohi
Halicyclops japonicus
Halicyclops kieferi
Halicyclops konkanensis
Halicyclops korodiensis
Halicyclops lanceolatus
Halicyclops latus
Halicyclops lindbergi
Halicyclops longifurcatus
Halicyclops longispinosus
Halicyclops lutum
Halicyclops oblongus
Halicyclops oraeeburnensis
Halicyclops ovatus
Halicyclops paradenticulatus
Halicyclops pelseneeri
Halicyclops pescei
Halicyclops pilifer
Halicyclops pilosus
Halicyclops pondoensis
Halicyclops propinquus
Halicyclops pumilus
Halicyclops pusillus
Halicyclops ramirezi
Halicyclops reunionensis
Halicyclops reunionis
Halicyclops robustus
Halicyclops rochai
Halicyclops ryukyuensis
Halicyclops salinarum
Halicyclops sarsi
Halicyclops septentrionalis
Halicyclops setifer
Halicyclops setiformis
Halicyclops sinensis
Halicyclops soqotranus
Halicyclops souzacruzae
Halicyclops spinifer
Halicyclops stocki
Halicyclops tageae
Halicyclops tenuispina
Halicyclops thermophilus
(tree size 2)
Halicyclops thysanotus
Halicyclops troglodytes
Halicyclops uncus
Halicyclops validus
Halicyclops verae
Halicyclops wilsoni
Halicyclops gaviriai
Halicyclops mariae
Halicyclops rotundipes
(tree size 2)
Halicyclops martinezi
Halicyclops pygmaeus