Hyalomma marginatum

Also known as the Bont-legged tick

Hosts

Cattle, horses, dogs, human

Distribution

UK (Larvae and nymphs only from migratory birds), France, Denmark, Norway, Portugal

Pathogenesis

Cattle: Babesia ovis, Rickettsia aeschlimanii and Crimea-Congo haemorrhagic fever

Horse: Babesia caballi and Theileria equi

Hyalomma marginatum is also known to be a vector of;

Babesia equi

Nutallia equi

Brucella abortus

Crimean haemorrhagic fever in humans

Description

Adult female dorsal features

• Scapular grooves steep
• Legs with pale rings
• Punctations are small and sparse
• Porose areas large
• Unfed female can measure 5.0mm-6.5mm in length
• Engorged females can measure up to  in length 20mm in length

Adult female dorsal view and adult female close up of gnathosoma. (Click on pictures for a close up)

Adult female ventral features

• Coxae I: long and distinct internal and external spur, that are large and equal
• Coxae II-IV: indistinct external spurs that can be hard to see

Adult female ventral view and adult female close up of coxae/ventral gnathosoma. (Click on pictures for a close up)

Adult male dorsal features

• Cervical field depression is apparent
• Lateral grooves are long
  
• Scapular grooves present
  
• Caudal depression is present
• Central festoon is dark in colour
• Paramedian grooves are small and indistinct
• Males can measure between 3.8mm-4.5mm

Adult male dorsal view and adult male close up of gnathosoma. (Click on pictures for a close up)

Adult male ventral features

• Coxae I: long and distinct internal and external spur, that are large and equal
• Coxae II-IV: indistinct external spurs that can be hard to see
• Adanal shields present; square ended
• Sub-anal plates present; distinct and aligned with adanal shield

Adult male ventral view and adult male close up of coxae/ventral gnathosoma. (Click on pictures for a close up)

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