stigmal plates

stigmal plates

area in arthropod larvae where the tracheal system opens to the outside; morphology of this area is used to identify various arthropod larvae.
See also: spiracle.

stig·mal plates

(stig'măl plāts)
Area in arthropod larvae where the tracheal system opens to the outside; morphology of this area is used to identify various arthropod larvae.
References in periodicals archive ?
ovis on the basis of 'D' shaped, closed, dark brown coloured, deep stigmal plates with radially arranged respiratory holes (Fig.
Larvae were boiled in 10% potassium hydroxide (KOH) for 1 h to clear the stigmal plates of posterior spiracles.