• Cladotanytarsus pe8
• Cladotanytarsus pe9
• Cladotanytarsus pseudomancus
• Cladotanytarsus teres
• Cladotanytarsus vanderwulpi CLADVAND
  
• Cladotanytarsus wexionensis CLADWEXI
  
• Clinotanypus claripennis
• Clinotanypus nervosus CLTANERV
  
• Clunio adriaticus
• Clunio balticus
• Clunio marinus CLUNMARI
  
• Clunio ponticus
• Conchapelopia aagaardi
• Conchapelopia abiskoensis
• Conchapelopia cygnus
• Conchapelopia hittmairorum
• Conchapelopia intermedia
• Conchapelopia melanops CONCMELA
  
• Conchapelopia pallidula CONCPALL
  
• Conchapelopia spec-Lappland
• Conchapelopia trifascia
• Conchapelopia viator
• Constempellina brevicosta CONSBREV
  
• Corynocera ambigua COCEAMBI
  
• Corynocera oliveri COCEOLIV
  
• Corynoneura arctica
• Corynoneura brundini
• Corynoneura carriana CONECARR
  
• Corynoneura celeripes CONECELE
  
• Corynoneura celtica
• Corynoneura coronata CONECORO
  
• Corynoneura edwardsi CONEEDWA
  
• Corynoneura fittkaui
• Corynoneura gratias
• Corynoneura gynocera
• Corynoneura lacustris CONELACU
  
• Corynoneura lobata CONELOBA
  
• Corynoneura magna
• Corynoneura marina
• Corynoneura pe2a
• Corynoneura pe5
• Corynoneura scutellata CONESCUT
  
• Corynoneurella paludosa
• Cricotopus albiforceps CRICALBI
  
• Cricotopus algarum CRICALGA
  
• Cricotopus annulator CRICANNU
  
• Cricotopus arcuatus CRICARCU
  
• Cricotopus beckeri
• Cricotopus bicinctus CRICBICI
  
• Cricotopus borealis