Female puparium light-brown, elongated, pyriform, flat; length, averaging 1/10in. (sometimes reaching 1/8in.); breadth, averaging 1/15in. (reaching 1/12in.); texture, thin. The second pellicle is comparatively large.
Male puparium smaller and narrower, brown, not carinated.
Adult female yellowish-brown or greyish; elongated, segmented; on the segments are a few spiny hairs. Abdomen ending in several lobes, of which the two median are much the largest. Spinnerets in a continuous arch, containing sixty to seventy orifices. Many single spinnerets. Several scaly hairs between the lobes.
Adult male orange-coloured, about 1/30in. long. Antennæ 10-jointed. Digitules, long fine hairs. Sheath of the penis long.
Habitat—On Dysoxylon spectabile and Atherosperma Novæ Zælandiæ, Wellington; on Coprosma, Riccarton Bush, Canterbury.
In the female puparium and in the length of the abdominal spike of the male this species resembles M. buxi, Bouché (Signoret, loc. cit., 1868, p. 93), but differs in all other respects.
Female puparium usually white, elongated; pellicles at one end; generally flat.
Male puparium white, elongated, carinated; pellicle at one end.