part of posterolateral spiracular lobe posterolateral spiracular lobe plate II Fig 59,60,61,63 Abbr: PSLP II in ISBN:0-937548-00-6. TGMA:0001256 TGMA:0001256 The often poorly delimited outer sclerite (that nearest abdominal segment VIII or the distal margin of the siphon) of one of the posterolateral spiracular lobes of the spiracular apparatus. default_namespace dorsal lateral piece of outer tube lateral piece lateral plate lateral plate of scoop lateral wall of scoop lower surface (base) of posterior lobe outer flap of ventral valve posterior plate ventral lateral piece of outer tube ventral plate outer flap