In addition, these four kinds of megalopa are different on the fifth pleopod, third maxilliped and fifth pereiopod.

其次，四种蟳大在泳足、三颚足步足都有较明显的差异。

D. frascone's fourth and fifth pairs of pereiopods on the carapace have hooked ends and therefore enable them to carry things.

位于背甲上的四对对步足，末端 呈钩状，使疣面关公蟹具有携物之能力。