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disc ~roundtop: dense covering of denticles
shoulders: 1 pair large tuberclestail = long whip, no D, with low ventral keel
tail stings: long, thin, at rear -
disc rhomboidal, corners angulardisc +/- central row thornstail: base broad, depressed, spiny, + large tuberclesmouth broad
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disc oval/circular, corners roundedtail base narrow, circularmouth narrowdisc +/- central row thorns
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disc robust, rhomboidal, corners angular/broadly roundeddisc + central row thornstail: base not wide, no flat, no tubercles