| argentina | entre rios province | trichostrongylus axei | species | 0 | 1 |
| argentina | entre rios province | trichostrongylus colubriformis | species | 0 | 1 |
| argentina | jujuy province | hassalstrongylus sp. rps-2013 | species | 14 | 0 |
| australia | | trichostrongylus retortaeformis | species | 4 | 0 |
| australia | | trichostrongylus vitrinus | species | 10 | 0 |
| australia | new south wales | trichostrongylus axei | species | 0 | 6 |
| australia | new south wales | trichostrongylus colubriformis | species | 0 | 6 |
| australia | new south wales | trichostrongylus rugatus | species | 0 | 1 |
| australia | new south wales | trichostrongylus vitrinus | species | 0 | 3 |
| australia | queensland | trichostrongylus axei | species | 0 | 4 |
| australia | queensland | trichostrongylus colubriformis | species | 0 | 4 |
| australia | queensland | trichostrongylus rugatus | species | 0 | 1 |
| australia | queensland | trichostrongylus vitrinus | species | 0 | 2 |
| australia | south australia | trichostrongylus axei | species | 0 | 2 |
| australia | south australia | trichostrongylus rugatus | species | 0 | 1 |
| australia | south australia | trichostrongylus vitrinus | species | 0 | 2 |
| australia | tasmania | trichostrongylus axei | species | 0 | 1 |
| australia | victoria | libyostrongylus douglassi | species | 0 | 2 |
| australia | victoria | odilia sp. rps-2013 | species | 7 | 0 |
| australia | victoria | trichostrongylus axei | species | 0 | 1 |
| australia | victoria | trichostrongylus colubriformis | species | 0 | 1 |
| australia | western australia | trichostrongylus axei | species | 0 | 1 |
| australia | western australia | trichostrongylus colubriformis | species | 0 | 1 |
| australia | western australia | trichostrongylus retortaeformis | species | 0 | 2 |
| australia | western australia | trichostrongylus vitrinus | species | 0 | 1 |
| austria | | trichostrongylus colubriformis | species | 3 | 0 |
| austria | lower austria | trichostrongylus axei | species | 0 | 1 |
| austria | salzburg | rinadia mathevossiani | species | 0 | 1 |
| austria | salzburg | trichostrongylus capricola | species | 0 | 1 |
| austria | styria | trichostrongylus axei | species | 0 | 1 |
| belgium | flemish region | trichostrongylus axei | species | 0 | 1 |
| brazil | | libyostrongylus dentatus | species | 3 | 0 |
| brazil | | libyostrongylus douglassi | species | 8 | 0 |
| brazil | minas gerais | trichostrongylus axei | species | 0 | 1 |
| brazil | minas gerais | trichostrongylus colubriformis | species | 0 | 1 |
| brazil | paraiba | trichostrongylus axei | species | 0 | 1 |
| brazil | paraiba | trichostrongylus colubriformis | species | 0 | 1 |
| brazil | pernambuco | trichostrongylus colubriformis | species | 0 | 1 |
| brazil | rio de janeiro | libyostrongylus dentatus | species | 0 | 1 |
| brazil | rio grande do norte | trichostrongylus colubriformis | species | 0 | 1 |
| brazil | rio grande do sul | trichostrongylus axei | species | 0 | 1 |
| brazil | santa catarina | trichostrongylus axei | species | 0 | 1 |
| brazil | sao paulo | trichostrongylus axei | species | 0 | 2 |
| brazil | sao paulo | trichostrongylus colubriformis | species | 0 | 1 |
| burkina faso | centre region | hyostrongylus rubidus | species | 0 | 1 |
| cameroon | | trichostrongylus axei | species | 7 | 0 |
| cameroon | | trichostrongylus colubriformis | species | 4 | 0 |
| cameroon | east region | trichostrongylus axei | species | 3 | 0 |
| canada | alberta | graphidiella ochotonae | species | 5 | 0 |
| canada | alberta | obeliscoides cuniculi | species | 0 | 2 |
| canada | british columbia | graphidiella ochotonae | species | 6 | 0 |
| canada | ontario | obeliscoides cuniculi | species | 0 | 1 |
| canada | ontario | trichostrongylus axei | species | 0 | 2 |
| canada | ontario | trichostrongylus colubriformis | species | 0 | 1 |
| canada | quebec | trichostrongylus axei | species | 0 | 1 |
| canada | quebec | trichostrongylus colubriformis | species | 0 | 1 |
| chile | | trichostrongylus colubriformis | species | 7 | 0 |
| chile | los rios region | trichostrongylus longispicularis | species | 0 | 1 |
| chile | los rios region | trichostrongylus vitrinus | species | 0 | 1 |
| china | | trichostrongylus sp. nmg-2010 | species | 1 | 0 |
| china | heilongjiang | trichostrongylus colubriformis | species | 0 | 1 |
| china | inner mongolia | orloffia buriatica | species | 4 | 0 |
| china | inner mongolia | trichostrongylus colubriformis | species | 0 | 1 |
| china | qinghai | orloffia buriatica | species | 8 | 0 |
| china | xinjiang | orloffia buriatica | species | 1 | 0 |
| china | yunnan | trichostrongylus colubriformis | species | 1 | 0 |
| costa rica | guanacaste province | vexillata convoluta | species | 0 | 1 |
| costa rica | guanacaste province | viannaia didelphis | species | 5 | 0 |
| costa rica | guanacaste province | viannaia viannai | species | 3 | 0 |
| democratic republic of the congo | province orientale | hyostrongylus rubidus | species | 0 | 1 |
| democratic republic of the congo | province orientale | trichostrongylus colubriformis | species | 0 | 1 |
| egypt | | trichostrongylus axei | species | 4 | 0 |
| egypt | | trichostrongylus colubriformis | species | 1 | 0 |
| egypt | matrouh governorate | trichostrongylus colubriformis | species | 0 | 1 |
| egypt | north sinai governorate | trichostrongylus colubriformis | species | 0 | 1 |
| egypt | qalyubia governorate | trichostrongylus axei | species | 0 | 1 |
| egypt | sharqia governorate | trichostrongylus axei | species | 0 | 1 |
| ethiopia | | libyostrongylus dentatus | species | 3 | 0 |
| ethiopia | dire dawa region | trichostrongylus axei | species | 0 | 1 |
| ethiopia | harari region | trichostrongylus axei | species | 0 | 1 |
| ethiopia | somali region | trichostrongylus axei | species | 0 | 1 |
| fiji | | trichostrongylus colubriformis | species | 0 | 1 |
| finland | central finland region | trichostrongylus retortaeformis | species | 0 | 1 |
| france | | graphidium strigosum | species | 5 | 0 |
| france | | trichostrongylus capricola | species | 2 | 0 |
| france | | trichostrongylus colubriformis | species | 3 | 0 |
| france | centre region | trichostrongylus axei | species | 0 | 1 |
| france | centre region | trichostrongylus colubriformis | species | 0 | 2 |
| france | centre region | trichostrongylus vitrinus | species | 0 | 1 |
| france | limousin region | trichostrongylus colubriformis | species | 0 | 1 |
| france | poitou-charentes region | trichostrongylus colubriformis | species | 0 | 1 |
| french guiana | guyane | travassostrongylus sp. rps-2013 | species | 5 | 0 |
| french guiana | guyane | viannaia hamata | species | 4 | 0 |
| french guiana | guyane | viannaia minispicula | species | 2386 | 0 |
| french polynesia | | trichostrongylus axei | species | 0 | 1 |
| germany | bavaria | trichostrongylus axei | species | 0 | 2 |
| germany | bavaria | trichostrongylus colubriformis | species | 0 | 1 |
| germany | hesse | trichostrongylus colubriformis | species | 0 | 1 |
| germany | schleswig-holstein | trichostrongylus axei | species | 0 | 1 |
| ghana | | trichostrongylus axei | species | 7 | 0 |
| ghana | | trichostrongylus colubriformis | species | 28 | 0 |
| ghana | upper east region | hyostrongylus rubidus | species | 0 | 1 |
| guadeloupe | | trichostrongylus colubriformis | species | 1 | 1 |
| iceland | northeaster region | trichostrongylus tenuis | species | 0 | 1 |
| india | | trichostrongylus colubriformis | species | 3 | 0 |
| india | haryana | trichostrongylus colubriformis | species | 0 | 1 |
| india | jammu and kashmir | trichostrongylus axei | species | 0 | 1 |
| india | jammu and kashmir | trichostrongylus colubriformis | species | 0 | 1 |
| india | kerala | trichostrongylus colubriformis | species | 1 | 0 |
| india | kerala | trichostrongylus sp. rr-2017 | species | 3 | 0 |
| indonesia | north sumatra province | trichostrongylus colubriformis | species | 0 | 1 |
| iran | | trichostrongylus colubriformis | species | 12 | 0 |
| iran | ardabil province | trichostrongylus axei | species | 1 | 0 |
| iran | ardabil province | trichostrongylus colubriformis | species | 10 | 0 |
| iran | ardabil province | trichostrongylus vitrinus | species | 1 | 0 |
| iran | gilan province | trichostrongylus axei | species | 7 | 0 |
| iran | gilan province | trichostrongylus colubriformis | species | 57 | 0 |
| iran | gilan province | trichostrongylus longispicularis | species | 6 | 0 |
| iran | gilan province | trichostrongylus vitrinus | species | 6 | 0 |
| iran | isfahan province | trichostrongylus capricola | species | 0 | 1 |
| iran | khuzestan province | trichostrongylus capricola | species | 2 | 0 |
| iran | khuzestan province | trichostrongylus colubriformis | species | 2 | 0 |
| iran | khuzestan province | trichostrongylus probolurus | species | 1 | 0 |
| iran | khuzestan province | trichostrongylus vitrinus | species | 3 | 0 |
| iran | mazandaran province | trichostrongylus axei | species | 0 | 1 |
| iran | mazandaran province | trichostrongylus colubriformis | species | 0 | 1 |
| italy | piemonte region | rinadia mathevossiani | species | 0 | 1 |
| italy | piemonte region | trichostrongylus axei | species | 0 | 2 |
| italy | piemonte region | trichostrongylus colubriformis | species | 0 | 1 |
| italy | piemonte region | trichostrongylus vitrinus | species | 0 | 1 |
| italy | sardinia autonomous region | trichostrongylus axei | species | 1 | 0 |
| italy | sardinia autonomous region | trichostrongylus colubriformis | species | 1 | 0 |
| italy | sardinia autonomous region | trichostrongylus vitrinus | species | 1 | 0 |
| italy | sicily autonomous region | trichostrongylus axei | species | 0 | 1 |
| italy | sicily autonomous region | trichostrongylus capricola | species | 0 | 1 |
| italy | umbria region | trichostrongylus axei | species | 0 | 1 |
| japan | hokkaido prefecture | trichostrongylus axei | species | 0 | 1 |
| japan | iwate prefecture | skrjabinagia sp. iwate-01 | species | 1 | 0 |
| japan | niigata prefecture | trichostrongylus orientalis | species | 0 | 1 |
| japan | wakayama prefecture | paracooperia sp. hs-2011 | species | 1 | 0 |
| kenya | | trichostrongylus colubriformis | species | 1 | 0 |
| kenya | central province | trichostrongylus axei | species | 0 | 1 |
| kuwait | | trichostrongylus probolurus | species | 0 | 1 |
| laos | | trichostrongylus colubriformis | species | 12 | 0 |
| laos | bolikhamsai province | trichostrongylus colubriformis | species | 10 | 0 |
| laos | khammouan province | trichostrongylus colubriformis | species | 4 | 0 |
| laos | savannakhet province | trichostrongylus colubriformis | species | 17 | 2 |
| madagascar | menabe region | trichostrongylidae sp. as14.l.3 | species | 1 | 0 |
| maldives | | trichostrongylus colubriformis | species | 0 | 1 |
| mexico | morelos | vexillata convoluta | species | 12 | 0 |
| mexico | morelos | viannaia viannai | species | 2 | 0 |
| mexico | veracruz-llave | travassostrongylus orloffi | species | 6 | 0 |
| mongolia | | orloffia bisonis | species | 4 | 0 |
| mongolia | | orloffia kasakhstanica | species | 1 | 0 |
| morocco | chaouia-ouardigha | trichostrongylus axei | species | 0 | 2 |
| morocco | grand casablanca | trichostrongylus axei | species | 0 | 1 |
| morocco | rabat-sale-zemmour-zaer | trichostrongylus axei | species | 0 | 1 |
| mozambique | maputo city | trichostrongylus colubriformis | species | 0 | 1 |
| mozambique | maputo province | trichostrongylus colubriformis | species | 0 | 1 |
| netherlands | utrecht province | trichostrongylus axei | species | 0 | 1 |
| new zealand | | trichostrongylus colubriformis | species | 54 | 0 |
| new zealand | gisborne | trichostrongylus colubriformis | species | 0 | 2 |
| nigeria | oyo | trichostrongylus colubriformis | species | 0 | 1 |
| nigeria | plateau | hyostrongylus rubidus | species | 0 | 1 |
| nigeria | rivers | hyostrongylus rubidus | species | 0 | 1 |
| nigeria | sokoto | trichostrongylus colubriformis | species | 0 | 1 |
| norway | | travassosius rufus | species | 3 | 0 |
| pakistan | | trichostrongylus axei | species | 1 | 0 |
| panama | darien province | travassostrongylus callis | species | 4 | 0 |
| panama | darien province | viannaia didelphis | species | 5 | 0 |
| panama | darien province | viannaia viannai | species | 9 | 0 |
| poland | pomorskie province | trichostrongylus tenuis | species | 0 | 1 |
| russia | moscow city | trichostrongylus axei | species | 1 | 0 |
| russia | moscow city | trichostrongylus colubriformis | species | 2 | 0 |
| russia | moscow city | trichostrongylus probolurus | species | 1 | 0 |
| russia | moscow oblast | trichostrongylus axei | species | 2 | 0 |
| russia | moscow oblast | trichostrongylus vitrinus | species | 3 | 0 |
| saudi arabia | makkah region | trichostrongylus axei | species | 0 | 1 |
| south africa | eastern cape province | longistrongylus | genus | 0 | 1 |
| south africa | eastern cape province | trichostrongylus axei | species | 0 | 3 |
| south africa | eastern cape province | trichostrongylus rugatus | species | 0 | 3 |
| south africa | free state province | longistrongylus | genus | 0 | 1 |
| south africa | free state province | trichostrongylus axei | species | 0 | 2 |
| south africa | gauteng province | hyostrongylus rubidus | species | 0 | 1 |
| south africa | gauteng province | trichostrongylus colubriformis | species | 0 | 2 |
| south africa | kwazulu-natal province | hyostrongylus rubidus | species | 0 | 1 |
| south africa | kwazulu-natal province | longistrongylus | genus | 0 | 1 |
| south africa | kwazulu-natal province | trichostrongylus axei | species | 0 | 1 |
| south africa | kwazulu-natal province | trichostrongylus capricola | species | 0 | 1 |
| south africa | kwazulu-natal province | trichostrongylus colubriformis | species | 0 | 1 |
| south africa | kwazulu-natal province | trichostrongylus falculatus | species | 0 | 3 |
| south africa | kwazulu-natal province | trichostrongylus rugatus | species | 0 | 1 |
| south africa | kwazulu-natal province | trichostrongylus vitrinus | species | 0 | 1 |
| south africa | mpumalanga province | trichostrongylus sp. trich-r34-0909-139-3 | species | 1 | 0 |
| south africa | mpumalanga province | trichostrongylus sp. trich-r34-0909-139-6 | species | 1 | 0 |
| south africa | northern cape province | longistrongylus | genus | 0 | 1 |
| south africa | the western cape province | longistrongylus | genus | 0 | 2 |
| south africa | the western cape province | trichostrongylus axei | species | 0 | 2 |
| south africa | the western cape province | trichostrongylus falculatus | species | 0 | 1 |
| spain | andalusia | trichostrongylus probolurus | species | 0 | 1 |
| spain | andalusia | trichostrongylus vitrinus | species | 0 | 1 |
| spain | canary islands | trichostrongylus retortaeformis | species | 0 | 1 |
| spain | castile and leon | trichostrongylus axei | species | 0 | 1 |
| spain | castilla-la mancha | trichostrongylus axei | species | 0 | 1 |
| spain | extremadura | trichostrongylus axei | species | 0 | 1 |
| tanzania | iringa region | trichostrongylus colubriformis | species | 0 | 1 |
| tanzania | morogoro region | trichostrongylus tenuis | species | 0 | 1 |
| thailand | kanchanaburi province | trichostrongylus colubriformis | species | 1 | 0 |
| thailand | khon kaen province | trichostrongylus colubriformis | species | 2 | 0 |
| thailand | loei province | trichostrongylus colubriformis | species | 3 | 0 |
| thailand | roi et province | trichostrongylus colubriformis | species | 6 | 0 |
| thailand | sakon nakhon province | trichostrongylus colubriformis | species | 2 | 0 |
| turkey | bursa province | hyostrongylus rubidus | species | 0 | 1 |
| turkey | sanliurfa province | trichostrongylus vitrinus | species | 0 | 1 |
| turkey | van province | trichostrongylus axei | species | 0 | 1 |
| turkey | van province | trichostrongylus tenuis | species | 0 | 1 |
| u.s. virgin islands | | trichostrongylus colubriformis | species | 0 | 1 |
| uganda | western region | hyostrongylus rubidus | species | 0 | 1 |
| united kingdom | | trichostrongylus vitrinus | species | 1 | 0 |
| united kingdom | england | graphidium strigosum | species | 0 | 1 |
| united kingdom | england | hyostrongylus rubidus | species | 0 | 4 |
| united kingdom | england | longistrongylus | genus | 0 | 1 |
| united kingdom | england | skrjabinagia kolchida | species | 0 | 1 |
| united kingdom | england | trichostrongylus axei | species | 0 | 5 |
| united kingdom | england | trichostrongylus colubriformis | species | 0 | 1 |
| united kingdom | england | trichostrongylus retortaeformis | species | 0 | 1 |
| united kingdom | england | trichostrongylus tenuis | species | 307 | 2 |
| united kingdom | scotland | graphidium strigosum | species | 0 | 2 |
| united kingdom | scotland | hyostrongylus rubidus | species | 0 | 1 |
| united kingdom | scotland | trichostrongylus axei | species | 1 | 5 |
| united kingdom | scotland | trichostrongylus retortaeformis | species | 0 | 8 |
| united kingdom | scotland | trichostrongylus tenuis | species | 0 | 9 |
| united kingdom | scotland | trichostrongylus vitrinus | species | 1 | 3 |
| united kingdom | wales | hyostrongylus rubidus | species | 0 | 1 |
| united kingdom | wales | skrjabinagia kolchida | species | 0 | 1 |
| united kingdom | wales | trichostrongylus axei | species | 0 | 1 |
| united states | | trichostrongylus axei | species | 15 | 0 |
| united states | | trichostrongylus colubriformis | species | 15 | 0 |
| united states | california | trichostrongylus axei | species | 0 | 4 |
| united states | california | trichostrongylus calcaratus | species | 0 | 1 |
| united states | california | trichostrongylus colubriformis | species | 0 | 1 |
| united states | california | trichostrongylus tenuis | species | 0 | 1 |
| united states | california | trichostrongylus vitrinus | species | 0 | 1 |
| united states | colorado | graphidiella ochotonae | species | 15 | 0 |
| united states | florida | trichostrongylus tenuis | species | 0 | 3 |
| united states | georgia | trichostrongylus axei | species | 0 | 2 |
| united states | georgia | trichostrongylus colubriformis | species | 0 | 1 |
| united states | georgia | viannaia hamata | species | 0 | 1 |
| united states | hawaii | trichostrongylus axei | species | 0 | 1 |
| united states | idaho | graphidiella ochotonae | species | 2 | 0 |
| united states | illinois | obeliscoides cuniculi | species | 0 | 1 |
| united states | illinois | trichostrongylus affinis | species | 0 | 1 |
| united states | illinois | trichostrongylus calcaratus | species | 0 | 1 |
| united states | illinois | viannaia hamata | species | 1 | 0 |
| united states | illinois | viannaia viannai | species | 2 | 0 |
| united states | kentucky | obeliscoides cuniculi | species | 0 | 1 |
| united states | kentucky | trichostrongylus axei | species | 0 | 5 |
| united states | kentucky | trichostrongylus calcaratus | species | 0 | 1 |
| united states | louisiana | trichostrongylus axei | species | 0 | 2 |
| united states | maine | obeliscoides cuniculi | species | 0 | 1 |
| united states | mississippi | trichostrongylus axei | species | 0 | 2 |
| united states | mississippi | trichostrongylus colubriformis | species | 0 | 1 |
| united states | montana | graphidiella ochotonae | species | 9 | 0 |
| united states | montana | orloffia bisonis | species | 0 | 1 |
| united states | nebraska | libyostrongylus douglassi | species | 2 | 0 |
| united states | nevada | trichostrongylus axei | species | 0 | 1 |
| united states | new jersey | trichostrongylus axei | species | 0 | 1 |
| united states | new mexico | graphidiella ochotonae | species | 8 | 0 |
| united states | new york | trichostrongylus axei | species | 0 | 1 |
| united states | new york | trichostrongylus lerouxi | species | 0 | 1 |
| united states | north carolina | libyostrongylus dentatus | species | 0 | 1 |
| united states | oklahoma | trichostrongylus calcaratus | species | 0 | 1 |
| united states | oregon | graphidiella ochotonae | species | 3 | 0 |
| united states | oregon | trichostrongylus axei | species | 0 | 1 |
| united states | oregon | trichostrongylus tenuis | species | 0 | 1 |
| united states | pennsylvania | obeliscoides cuniculi | species | 0 | 1 |
| united states | pennsylvania | trichostrongylus calcaratus | species | 0 | 1 |
| united states | texas | libyostrongylus dentatus | species | 0 | 1 |
| united states | texas | longistrongylus | genus | 0 | 1 |
| united states | texas | trichostrongylus axei | species | 0 | 3 |
| united states | texas | trichostrongylus tenuis | species | 0 | 1 |
| united states | virginia | viannaia hamata | species | 0 | 1 |
| united states | washington | graphidiella ochotonae | species | 14 | 0 |
| united states | washington | trichostrongylus longispicularis | species | 0 | 1 |
| united states | wisconsin | trichostrongylus axei | species | 0 | 1 |
| united states | wyoming | graphidiella ochotonae | species | 23 | 0 |
| united states | wyoming | orloffia bisonis | species | 0 | 1 |
| united states | wyoming | trichostrongylus axei | species | 0 | 1 |
| united states | wyoming | trichostrongylus longispicularis | species | 0 | 1 |