Marginal setae small curved bifid and fimbriate

Spiracular setae four or three, with rounded apices

Spiracular cleft sclerotization absent

Derm with small clear areas

Dorsal setae cylindrical scattered irregularly

Submarginal tubercle usually absent, rarely present

Preopercular pores present

Dorsal tubular ducts absent

Anal plate quadrate with anterior margin longer than posterior margin

Apical setae three pairs

Subapical setae two pairs

Fringe setae two pairs

Submarginal setae thin spinose

Interantennal setae two pairs

Prevulvar setae three pairs

Ventral setae thin spinose

Antenna seven segmented

Claw without a denticle

Tibiotarsal sclerosis present

Spiracle without sclerotic plate

Multilocular pores few near genital opening

Ventral tubular ducts few near mid coxa