Development The nymph has 8 abdominal segments plus the telson; the number of abdominal segments increases through moulting until the full adult complement of 11 abdominal segments is achieved. Further moults may occur, but do not add additional body segments; it is still not known whether the adults continue to moult throughout their lives. Eggs have been observed in only a few species.
devElopmeNt The nYmpH has 8 ABdomINal segMEnts plus the Telson; the numBer oF abDomiNAl seGmenTS increaSEs ThROugh moUlting unTIL tHe fUll adulT coMPLemenT of 11 abDoMINAl segments is achiEVed. fuRTher mouLts MaY oCcUr, bUt do not adD addItIOnAl BodY SegmenTs; it Is sTill noT knowN wHETHer ThE aduLts coNTinUe To moult ThRoUgHoUt Their LIVEs. eggS HaVE beEn obsERved iN Only a fEW spEcies.