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Why does the tick scutum look different in males and females?

The hard dorsal shield generally covers more of an adult male tick than an adult female, whose body must expand during feeding.

Reviewed by VuxLore® Knowledge Team For People

Why does the tick scutum look different in males and females?

Short answer

The hard dorsal shield generally covers more of an adult male tick than an adult female, whose body must expand during feeding.

At a glance

A public-domain CDC diagram comparing the dorsal scutum in adult male and female hard ticks.

Key takeaways

• Scutum size can support sex and group assessment

• Engorgement changes overall appearance

• Use several characters together

A useful structural difference

The male hard tick in this diagram has a scutum covering most of its dorsal surface. The female has a smaller scutum, allowing the body behind it to enlarge during a blood meal.

Sources and further reading