Each tergite (segments II-VII) normally bears five pairs of setae (D1-D5), which usually form an arc from D1 (innermost anterior seta) to D5 (innermost posterior seta) (Fig.5.jpg); however, they are frequently displaced and then may be difficult to identify in terms of seta number.

Alternative forms for setae (D1-D5) : seta D1, seta D2, seta D3, seta D4, seta D5, setae D1, setae D2, setae D2 and D3, setae D2, D4, setae D2-5, setae D3, setae D4, setae D5.