Haplophthalmus mengii
- kingdom: Animalia
- phylum: Arthropoda
- class: Malacostraca
- order: Isopoda
- family: Trichoniscidae
- genus: Haplophthalmus
- species: Haplophthalmus mengii
Ogulin
Karlovačka
CroatiaBremerhaven
BremenSteinrode
Thuringia
GermanyMaastricht
Limburg
NetherlandsFalkenberg
HallandMörbylånga
KalmarMajorna
Västra Götaland
Sweden