Parasit Nematode Superfamilies

Front 1

Trichostrongylus,Ostertagia, Dictyocaulus, Haemonchus, etc.
Buccal capsule small.
Life cycle direct; infection by L3

Back 1

Trichostrongyloidea
Order: strongylida

Front 2

Strongylus, Syngamus, etc.
Buccal capsule well developed; leaf crowns and teeth usually present.
Life cycle direct; infection by L3.

Back 2

Strongyloidea
Order: strongylida

Front 3

Ancylostoma, etc.
Life cycle direct; infection by L3.

Back 3

Ancylostomatoidea
Order: strongylida

Front 4

Metastrongylus, Muellerius, Oslerus*, Aelurostrongylus, etc. Buccal capsule small.
Life cycle indirect; infection by L3 in intermediate host.
*Oslerus is an exception to these features

Back 4

Metastrongyloidea
Order: strongylida

Front 5

Strongyloides, etc.
Very small nematodes; buccal capsule small. Free-living and parasitic generations.
Life cycle direct; infection by L3.

Back 5

Rhabditoidea
Order: rhabditida

Front 6

Ascaris, Toxocara, Parascaris, etc.
Large white nematodes.
Life cycle direct; infection by L2 in egg. (some literature states infection by L3 in egg)

Back 6

Ascaridoidea
Order: Ascaridida

Front 7

Ascaridia, Heterakis, etc.
Large white nematodes.
Life cycle direct; infection by L2 in egg.

Back 7

Heterakoidea
Order: Ascaridida

Front 8

Spirocerca, etc.
Spiral tail in male.
Life cycle indirect; infection by L3 from insect.

Back 8

Spiruroidea
Order: spirurida

Front 9

Habronema, Draschia, etc
Spiral tail in male.
Life cycle indirect; infection by L3 from insect.

Back 9

Habronematoidea
Order: spirurida

Front 10

Dirofilaria, Onchocerca, etc.
Long thin nematodes.
Life cycle indirect; infection by L3 from insect.

Back 10

Filaroidea
Order: spirurida

Front 11

Physaloptera, etc. Large nematodes.
Life cycle indirect; infection by L3 from insect.

Back 11

Physalopteroidea
Order: spirurida

Front 12

Trichuris, Capillaria, Trichinella, etc.
Whip-like or hair-like nematodes.
Life cycle direct or indirect; infection by L1. Can be L1 alone or L1 in egg.

Back 12

Trichinelloidea
Order: enoplida

Front 13

Dioctophyme, etc.
Very large nematodes. Atypical bursa.
Life cycle indirect; infection by L3 in aquatic annelids.

Back 13

Dioctophymatoidea
Order: enoplida