| argentina | buenos aires province | jassa slatteryi | species | 2 | 0 |
| argentina | chubut province | cyamus erraticus | species | 15 | 0 |
| argentina | chubut province | cyamus ovalis | species | 73 | 0 |
| australia | | caprella californica | species | 16 | 0 |
| australia | | caprella scaura | species | 15 | 0 |
| australia | | caprella sp. a mpc-2014 | species | 14 | 0 |
| australia | | paracaprella pusilla | species | 37 | 0 |
| australia | south australia | cyamus ovalis | species | 20 | 0 |
| brazil | | caprella dilatata | species | 8 | 0 |
| brazil | | caprella scaura | species | 53 | 0 |
| brazil | | cyamus ovalis | species | 1 | 0 |
| brazil | | paracaprella pusilla | species | 124 | 0 |
| canada | british columbia | jassa staudei | species | 6 | 0 |
| canada | manitoba | caprella septentrionalis | species | 7 | 0 |
| canada | manitoba | ischyrocerus anguipes | species | 9 | 0 |
| canada | new brunswick | caprella linearis | species | 18 | 0 |
| canada | new brunswick | caprella mutica | species | 1 | 0 |
| canada | new brunswick | caprella septentrionalis | species | 5 | 0 |
| canada | new brunswick | caprella unica | species | 7 | 0 |
| canada | new brunswick | ischyrocerus anguipes | species | 1 | 0 |
| canada | newfoundland and labrador | caprella septentrionalis | species | 4 | 0 |
| canada | newfoundland and labrador | ischyrocerus anguipes | species | 2 | 0 |
| canada | nova scotia | cyamus gracilis | species | 3 | 0 |
| canada | nova scotia | cyamus ovalis | species | 20 | 0 |
| canada | nova scotia | jassa marmorata | species | 1 | 0 |
| canada | nunavut | aeginina longicornis | species | 1 | 0 |
| canada | nunavut | ischyrocerus anguipes | species | 4 | 0 |
| canada | prince edward island | ischyrocerus anguipes | species | 4 | 0 |
| canada | quebec | caprella linearis | species | 8 | 0 |
| canada | quebec | caprella mutica | species | 4 | 0 |
| canada | quebec | caprella septentrionalis | species | 12 | 0 |
| canada | quebec | ischyrocerus anguipes | species | 17 | 0 |
| chile | | caprella californica | species | 21 | 0 |
| chile | | caprella sp. 1 mpc-2013 | species | 16 | 0 |
| china | | caprella scauroides | species | 8 | 0 |
| china | zhejiang | caprella scauroides | species | 12 | 0 |
| france | | caprella scaura | species | 15 | 0 |
| france | bretagne region | caprella acanthifera | species | 1 | 0 |
| france | bretagne region | phtisica marina | species | 1 | 0 |
| french polynesia | | ericthonius sp. bmoo-09677 | species | 1 | 0 |
| french polynesia | | gammaropsis sp. bmoo-09685 | species | 1 | 0 |
| french polynesia | | polynesoecetes kekeae | species | 1 | 0 |
| germany | schleswig-holstein | jassa marmorata | species | 24 | 0 |
| greece | | caprella scaura | species | 7 | 0 |
| israel | | paracaprella pusilla | species | 4 | 0 |
| italy | | caprella scaura | species | 31 | 0 |
| japan | | caprella sp. 2 mpc-2013 | species | 20 | 0 |
| japan | hiroshima prefecture | caprella scaura | species | 1 | 0 |
| japan | hiroshima prefecture | priscomilitaris heike | species | 3 | 0 |
| japan | ibaraki prefecture | cyamus erraticus | species | 6 | 0 |
| japan | ibaraki prefecture | cyamus ovalis | species | 12 | 0 |
| japan | kanagawa prefecture | caprella scaura | species | 1 | 0 |
| japan | kanagawa prefecture | caprella sp. kv-2010a | species | 2 | 0 |
| japan | okayama prefecture | caprella scaura | species | 4 | 0 |
| japan | osaka prefecture | caprella scaura | species | 2 | 0 |
| mauritius | | caprella scaura | species | 4 | 0 |
| mexico | | caprella sp. 3 mpc-2013 | species | 8 | 0 |
| mexico | | caprella sp. 4 mpc-2013 | species | 8 | 0 |
| mexico | | paracaprella pusilla | species | 40 | 0 |
| mexico | | paracaprella tenuis | species | 12 | 0 |
| morocco | | caprella penantis | species | 12 | 0 |
| morocco | | caprella scaura | species | 16 | 0 |
| netherlands | | caprella scaura | species | 6 | 0 |
| new zealand | auckland | caprella scauroides | species | 9 | 0 |
| norway | nordland county | jassa marmorata | species | 16 | 0 |
| portugal | | caprella penantis | species | 17 | 0 |
| portugal | | caprella scaura | species | 37 | 0 |
| portugal | setubal district | caprella andreae | species | 2 | 0 |
| portugal | viana do castelo district | caprella acanthifera | species | 3 | 0 |
| portugal | viana do castelo district | caprella danilevskii | species | 1 | 0 |
| portugal | viana do castelo district | caprella penantis | species | 13 | 0 |
| portugal | viana do castelo district | jassa falcata | species | 6 | 0 |
| portugal | viana do castelo district | jassa pusilla | species | 2 | 0 |
| portugal | viana do castelo district | jassa sp. bold:aax8442 | species | 1 | 0 |
| portugal | viana do castelo district | jassa sp. bold:acg5178 | species | 1 | 0 |
| portugal | viana do castelo district | parajassa pelagica | species | 3 | 0 |
| russia | | caprella septentrionalis | species | 1 | 0 |
| south africa | northern cape province | cyamus gracilis | species | 19 | 0 |
| south africa | northern cape province | cyamus ovalis | species | 1 | 0 |
| south africa | the western cape province | cyamus erraticus | species | 14 | 0 |
| south africa | the western cape province | cyamus gracilis | species | 22 | 0 |
| south africa | the western cape province | cyamus ovalis | species | 107 | 0 |
| south korea | | cerapus sp. bjl-2007 | species | 1 | 0 |
| spain | | caprella andreae | species | 21 | 0 |
| spain | | caprella danilevskii | species | 4 | 0 |
| spain | | caprella dilatata | species | 18 | 0 |
| spain | | caprella penantis | species | 64 | 0 |
| spain | | caprella scaura | species | 684 | 0 |
| spain | | paracaprella pusilla | species | 382 | 0 |
| spain | asturias | caprella andreae | species | 9 | 0 |
| sweden | varmland | jassa pusilla | species | 1 | 0 |
| sweden | varmland | phtisica marina | species | 1 | 0 |
| tunisia | | paracaprella pusilla | species | 6 | 0 |
| turkey | | caprella sp. b mpc-2013 | species | 3 | 0 |
| turkey | | jassa marmorata | species | 3 | 0 |
| united states | | caprella californica | species | 16 | 0 |
| united states | | caprella scaura | species | 22 | 0 |
| united states | | caprella simia | species | 17 | 0 |
| united states | | caprella sp. a mpc-2013 | species | 5 | 0 |
| united states | alaska | cyamus boopis | species | 1 | 0 |
| united states | california | caprella californica | species | 8 | 0 |
| united states | california | caprella mutica | species | 6 | 0 |
| united states | california | ericthonius brasiliensis | species | 8 | 0 |
| united states | california | ischyrocerus anguipes | species | 8 | 0 |
| united states | california | jassa slatteryi | species | 1 | 0 |
| united states | florida | caprella scaura | species | 1 | 0 |
| united states | florida | cyamus ovalis | species | 44 | 0 |
| united states | maine | caprella mutica | species | 1 | 0 |
| united states | maine | jassa marmorata | species | 1 | 0 |
| united states | maryland | cyamus erraticus | species | 11 | 0 |
| united states | massachusetts | caprella equilibra | species | 1 | 0 |
| united states | massachusetts | cyamus erraticus | species | 10 | 0 |
| united states | massachusetts | cyamus gracilis | species | 1 | 0 |
| united states | massachusetts | cyamus ovalis | species | 1 | 0 |
| united states | new york | jassa marmorata | species | 3 | 0 |
| united states | south carolina | jassa sp. sc1 | species | 9 | 0 |
| united states | virginia | caprella equilibra | species | 6 | 0 |
| united states | virginia | caprella penantis | species | 51 | 0 |
| united states | virginia | cyamus gracilis | species | 27 | 0 |
| united states | virginia | cyamus ovalis | species | 40 | 0 |
| united states | virginia | jassa marmorata | species | 10 | 0 |
| united states | virginia | paracaprella tenuis | species | 20 | 0 |
| united states | washington | ischyrocerus anguipes | species | 1 | 0 |
| united states | washington | jassa staudei | species | 1 | 0 |