| anguilla | | cystidicola farionis | species | 0 | 1 |
| argentina | la pampa province | mastophorus muris | species | 0 | 1 |
| australia | new south wales | cylicospirura felineus | species | 0 | 1 |
| australia | victoria | cylicospirura felineus | species | 0 | 1 |
| brazil | | physocephalus lassancei | species | 2 | 0 |
| cambodia | mondulkiri province | gongylonema neoplasticum | species | 0 | 1 |
| cambodia | preah sihanouk province | gongylonema neoplasticum | species | 3 | 1 |
| cambodia | pursat province | gongylonema neoplasticum | species | 10 | 1 |
| canada | alberta | physocephalus | genus | 0 | 1 |
| canada | manitoba | physocephalus | genus | 0 | 1 |
| china | | gongylonema pulchrum | species | 2 | 0 |
| china | inner mongolia | gongylonema aegypti | species | 0 | 1 |
| china | inner mongolia | gongylonema neoplasticum | species | 0 | 1 |
| china | inner mongolia | gongylonema nepalensis | species | 0 | 1 |
| china | inner mongolia | gongylonema pulchrum | species | 24 | 1 |
| china | xinjiang | streptopharagus sp. jsl-2010 | species | 1 | 0 |
| colombia | cauca department | physocephalus | genus | 0 | 1 |
| czech republic | | rhabdochona hellichi hellichi | subspecies | 1 | 0 |
| czech republic | | salmonema ephemeridarum | species | 1 | 0 |
| egypt | | spinitectus petterae | species | 1 | 0 |
| egypt | cairo governorate | rhabdochona congolensis | species | 0 | 1 |
| egypt | giza governorate | rhabdochona congolensis | species | 0 | 1 |
| egypt | south sinai governorate | gongylonema aegypti | species | 12 | 0 |
| france | alsace region | gongylonema pulchrum | species | 0 | 1 |
| france | ile-de-france region | mastophorus muris | species | 0 | 1 |
| french polynesia | | gongylonema pulchrum | species | 0 | 1 |
| french polynesia | | mastophorus muris | species | 0 | 1 |
| french polynesia | | physocephalus | genus | 0 | 1 |
| germany | baden-wuerttemberg | cylicospirura petrowi | species | 2 | 0 |
| germany | berlin | mastophorus muris | species | 3 | 0 |
| germany | berlin | physocephalus | genus | 0 | 1 |
| germany | brandenburg | mastophorus muris | species | 6 | 0 |
| germany | hesse | mastophorus muris | species | 1 | 0 |
| ghana | eastern region | gongylonema ingluvicola | species | 0 | 1 |
| ghana | upper east region | physocephalus | genus | 0 | 1 |
| guatemala | el progreso department | rhabdochona mexicana | species | 6 | 0 |
| guatemala | escuintla department | rhabdochona mexicana | species | 9 | 0 |
| haiti | | physocephalus | genus | 0 | 1 |
| india | | rhabdochona hellichi turkestanica | subspecies | 1 | 0 |
| india | | rhabdochona hospeti | species | 1 | 0 |
| india | | rhabdochona mazeedi | species | 1 | 0 |
| india | | spiruroidea gen. sp. 10 am-2009 | species | 1 | 0 |
| india | | spiruroidea gen. sp. 2 am-2009 | species | 1 | 0 |
| india | | spiruroidea gen. sp. 3 am-2009 | species | 1 | 0 |
| india | | spiruroidea gen. sp. 4 am-2009 | species | 1 | 0 |
| india | | spiruroidea gen. sp. 5 am-2009 | species | 1 | 0 |
| india | | spiruroidea gen. sp. 6 am-2009 | species | 1 | 0 |
| india | | spiruroidea gen. sp. 7 am-2009 | species | 1 | 0 |
| india | | spiruroidea gen. sp. 8 am-2009 | species | 1 | 0 |
| india | | spiruroidea gen. sp. 9 am-2009 | species | 1 | 0 |
| india | assam | rhabdochona hospeti | species | 2 | 0 |
| india | sikkim | rhabdochona hellichi | species | 0 | 1 |
| india | west bengal | rhabdochona hellichi | species | 0 | 1 |
| indonesia | | gongylonema neoplasticum | species | 4 | 0 |
| indonesia | east java province | gongylonema neoplasticum | species | 4 | 0 |
| iran | mazandaran province | gongylonema pulchrum | species | 6 | 0 |
| italy | | cystidicola farionis | species | 1 | 0 |
| italy | sardinia autonomous region | gongylonema nepalensis | species | 30 | 1 |
| japan | fukuoka prefecture | gongylonema pulchrum | species | 3 | 0 |
| japan | hokkaido prefecture | gongylonema pulchrum | species | 6 | 0 |
| japan | hyogo prefecture | gongylonema pulchrum | species | 115 | 0 |
| japan | kagoshima prefecture | gongylonema pulchrum | species | 18 | 0 |
| japan | kochi prefecture | gongylonema pulchrum | species | 8 | 0 |
| japan | nagasaki prefecture | gongylonema pulchrum | species | 1 | 0 |
| japan | nara prefecture | gongylonema pulchrum | species | 21 | 0 |
| japan | oita prefecture | gongylonema pulchrum | species | 9 | 0 |
| japan | okayama prefecture | gongylonema pulchrum | species | 8 | 0 |
| japan | okinawa prefecture | gongylonema neoplasticum | species | 3 | 0 |
| japan | tokyo prefecture | gongylonema pulchrum | species | 7 | 0 |
| japan | wakayama prefecture | gongylonema pulchrum | species | 14 | 0 |
| kenya | western province | physocephalus | genus | 0 | 1 |
| kiribati | | mastophorus muris | species | 0 | 1 |
| laos | luang prabang province | gongylonema neoplasticum | species | 1 | 0 |
| laos | vientiane prefecture | gongylonema neoplasticum | species | 1 | 0 |
| madagascar | | gongylonema neoplasticum | species | 1 | 0 |
| malaysia | kuala lumpur | gongylonema neoplasticum | species | 0 | 3 |
| malaysia | kuala lumpur | mastophorus muris | species | 0 | 1 |
| mexico | | rhabdochona guerreroensis | species | 1 | 0 |
| mexico | | spinitectus tabascoensis | species | 1 | 0 |
| mexico | chiapas | spinitectus tabascoensis | species | 0 | 1 |
| mexico | durango | rhabdochona mexicana | species | 32 | 0 |
| mexico | jalisco | rhabdochona guerreroensis | species | 4 | 0 |
| mexico | jalisco | rhabdochona lichtenfelsi | species | 18 | 1 |
| mexico | jalisco | rhabdochona mexicana | species | 5 | 0 |
| mexico | michoacan ocampo | rhabdochona lichtenfelsi | species | 61 | 1 |
| mexico | morelos | rhabdochona mexicana | species | 4 | 0 |
| mexico | oaxaca | physocephalus | genus | 0 | 1 |
| mexico | oaxaca | rhabdochona mexicana | species | 6 | 0 |
| mexico | san luis potosi | rhabdochona lichtenfelsi | species | 3 | 0 |
| mexico | san luis potosi | rhabdochona mexicana | species | 3 | 0 |
| mexico | tamaulipas | rhabdochona mexicana | species | 8 | 0 |
| mexico | veracruz-llave | physocephalus | genus | 0 | 1 |
| mexico | yucatan | physocephalus | genus | 0 | 1 |
| micronesia | | physocephalus | genus | 0 | 1 |
| new caledonia | | ascarophis adioryx | species | 1 | 0 |
| new caledonia | | metabronema magnum | species | 1 | 1 |
| nigeria | ogun | mastophorus muris | species | 0 | 1 |
| norway | more og romsdal county | cystidicola farionis | species | 0 | 1 |
| philippines | central luzon region | gongylonema neoplasticum | species | 171 | 0 |
| poland | | cystidicola farionis | species | 6 | 0 |
| poland | lublin province | gongylonema pulchrum | species | 0 | 1 |
| russia | | ichtyobronema hamulatum | species | 3 | 0 |
| russia | amur oblast | rhabdochona denudata | species | 0 | 1 |
| russia | dagestan republic | gongylonema pulchrum | species | 0 | 1 |
| russia | kamchatka krai | cystidicola farionis | species | 6 | 3 |
| russia | primorsky krai | rhabdochona denudata | species | 0 | 1 |
| russia | saratov oblast | cystidicola farionis | species | 0 | 1 |
| slovenia | | gongylonema pulchrum | species | 1 | 0 |
| south africa | | mastophorus muris | species | 2 | 0 |
| south africa | gauteng province | physocephalus | genus | 0 | 1 |
| south africa | kwazulu-natal province | gongylonema ingluvicola | species | 0 | 1 |
| spain | | salmonema ephemeridarum | species | 1 | 0 |
| spain | andalusia | gongylonema pulchrum | species | 0 | 1 |
| spain | canary islands | mastophorus muris | species | 0 | 1 |
| spain | canary islands | streptopharagus greenbergi | species | 0 | 1 |
| spain | madrid | gongylonema pulchrum | species | 0 | 1 |
| spain | valencia | physocephalus | genus | 0 | 1 |
| sudan | khartoum | gongylonema ingluvicola | species | 0 | 1 |
| switzerland | | cystidicola farionis | species | 1 | 0 |
| switzerland | | salmonema ephemeridarum | species | 1 | 0 |
| taiwan | | gongylonema neoplasticum | species | 0 | 1 |
| tanzania | kagera region | rhabdochona congolensis | species | 1 | 0 |
| tanzania | kagera region | spinitectus petterae | species | 1 | 0 |
| tanzania | morogoro region | gongylonema ingluvicola | species | 0 | 1 |
| thailand | | gongylonema neoplasticum | species | 4 | 0 |
| thailand | chanthaburi province | gongylonema neoplasticum | species | 2 | 0 |
| thailand | loei province | gongylonema neoplasticum | species | 1 | 0 |
| thailand | nan province | gongylonema neoplasticum | species | 29 | 0 |
| thailand | ratchaburi province | gongylonema neoplasticum | species | 2 | 0 |
| thailand | songkhla province | gongylonema neoplasticum | species | 3 | 0 |
| thailand | udon thani province | gongylonema neoplasticum | species | 31 | 0 |
| turkey | bursa province | gongylonema pulchrum | species | 0 | 1 |
| turkey | bursa province | physocephalus | genus | 0 | 1 |
| turkey | sanliurfa province | gongylonema pulchrum | species | 0 | 1 |
| united arab emirates | | physocephalus dromedarii | species | 1 | 0 |
| united kingdom | scotland | cystidicola farionis | species | 0 | 1 |
| united states | alaska | cylicospirura felineus | species | 0 | 1 |
| united states | florida | gongylonema ingluvicola | species | 0 | 3 |
| united states | florida | gongylonema pulchrum | species | 0 | 1 |
| united states | florida | physocephalus | genus | 0 | 1 |
| united states | georgia | gongylonema pulchrum | species | 0 | 1 |
| united states | hawaii | gongylonema pulchrum | species | 0 | 1 |
| united states | hawaii | physocephalus | genus | 0 | 1 |
| united states | illinois | gongylonema pulchrum | species | 0 | 1 |
| united states | kansas | cylicospirura felineus | species | 0 | 1 |
| united states | louisiana | spinitectus carolini | species | 0 | 1 |
| united states | nebraska | cylicospirura felineus | species | 0 | 1 |
| united states | new mexico | mastophorus muris | species | 0 | 1 |
| united states | new york | spinitectus carolini | species | 0 | 1 |
| united states | north carolina | spinitectus carolini | species | 1 | 0 |
| united states | oregon | cylicospirura felineus | species | 1 | 1 |
| united states | oregon | cylicospirura subaequalis | species | 1 | 1 |
| united states | pennsylvania | gongylonema pulchrum | species | 0 | 1 |
| united states | south dakota | cylicospirura felineus | species | 0 | 1 |
| united states | texas | gongylonema pulchrum | species | 0 | 2 |
| united states | texas | physocephalus | genus | 0 | 4 |
| united states | virginia | gongylonema pulchrum | species | 0 | 3 |
| united states | west virginia | gongylonema pulchrum | species | 0 | 1 |
| united states | wisconsin | cystidicola farionis | species | 1 | 0 |
| united states | wyoming | cylicospirura felineus | species | 0 | 1 |
| united states minor outlying islands | | mastophorus muris | species | 0 | 1 |