Summary description from Wikipedia:

Haplophthalmus danicus in languages:

Danish

Glat kambænkebider

Dutch

veenribbel

English

Terrestrial Cave Isopod

English

Spurred Ridgeback

Japanese

ナガワラジムシ

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Parent Taxon

• Haplophthalmus

Sibling Taxa

• Haplophthalmus abbreviatus
• Haplophthalmus danicus
• Haplophthalmus mariae
• Haplophthalmus mengii
• Haplophthalmus montivagus
• Haplophthalmus rhinoceros
• Haplophthalmus teissieri

Child Taxa

• Haplophthalmus danicus bagnalli
• Haplophthalmus danicus danicus
• Haplophthalmus danicus rufus
• Haplophthalmus danicus tauricus
• Haplophthalmus danicus transsilvanicus

Top Observation Places

• Arlington
• Rockville
• Bethesda