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===Scientific Classification===
{| cellpadding="10" cellspacing="0" border="1"
| Class
| Insecta
|-
| Order
| Phthiraptera
|-
| Suborder
| Anoplura
|-
| Family
| Haematopinidae
|}
===Identification===
The adults are around 4-5mm in length. They have a dark thoracic sternal plate, and all legs are of similar sizes.
===Life Cycle===
The lifespan of ''H. quadripertusus'' is around one month. The female lays white eggs, that stick to the hair of the host, in this case, particularly the tail. After between 9 and 25 days the eggs hatch into nymphs. The nymphs then transform into adults, which are commonly found on the head and tail.
The whole cycle, on average, takes around 2-3 weeks.
[[Category:Lice_-_Cattle]]