MIMOPEUS 127 
Elytra oval, sides more strongly curved than in any populations of M. opaculus, 
relatively narrower at shoulders and wider at mid length. More convex than in opaculus 
lateral slopes steep, sides slope down to epipleural carina and position of obsolete 
submarginal channel is barely indicated. The three primary costae are present as well 
developed, rounded ridges, while there are traces of secondary costae, one between each 
primary costa. Large punctures shallow, with sides rather steeper than those of pronotum, 
small punctures very shallow. Interstices quite flat, microsculpture strong. Punctures 
become almost obsolete on surface of submarginal “channel”. Dorsal surface lacks granules. 
Ventral surface. Mentum transverse, punctures distributed as in M. opaculus but smaller and 
shallower. Area between maxillary base and gula with a few indistinct punctures, compared 
with M. opaculus in which the punctures are distinct. Punctation of remainder of 
undersurface of head similarly sparse and shallow. Gula relatively broader than in M. 
opaculus. 
Prosternum smoother than in M. opaculus, punctures very indistinct; a few small 
granules present laterally. Prosternal intercoxal projection almost identical in shape with 
that of M. opaculus but punctures very small, shallow and indistinct. Mesosternal intercoxal 
process almost as broad as that of southern M. opaculus, unlike the narrow process of 
northern populations, Anterior intercoxal process of metasternum with submarginal groove 
almost obsolete, metasternum and metepisternum with punctures so indistinct as to be 
almost indistinguishable. 
Sternites of abdomen like those of M. opaculus except that intercoxal projection 
without submarginal groove in middle. 
Epipleura of elytra impunctate, with very strong microsculpture (visible at 25 x 
magnification), without granules. 
The whole undersurface bears much stronger microsculpture than in M. opaculus and 
thus appears duller to the naked eye. 
Legs. As in M. opaculus. 
Aedeagus (Fig.82). Differs from that of M. opaculus in lateral view in that basale relatively 
stouter. In dorsal view, apicale with sides barely sinuate, base relatively narrower, sides of 
basale relatively more strongly curved. 
FEMALE 
Like male but usually larger and relatively broader. The sexes are very difficult to 
distinguish without dissection. 
DIMENSIONS 
Measurement Mean S.D. Cry. Range Number 
Pr... 5.26mm 0.19 mm 3.6 4.8- 5.6mm 20 
E1.L. 16.18 mm 0.74 mm 4.6 14.9-17.4 mm 20 
Prt + EL. — — — 19.6-22.8 mm 20 
Pr.W. 8.54 mm 0.44 mm 5.2 7.7- 9.2mm 20 
Ap.W. 4,94 mm 0.25 mm 5.0 4.3- 5.6mm 20 
H.W, 3.98 mm 0.16mm 4.0 3.7- 4.2mm 20 
Range. Width 9.3-11.4 mm 
TYPE MATERIAL. Holotype ?. Tawhiti Rahi, Poor Knights Islands, xi.45. coll. 
Auckland Museum, AMNZ. Allotype co’. Tawhiti Rahi, under stone, ca 1.1.56. J.C. 
Watt, NZAC. Paratypes. Same data as holotype, (co) ?) NZAC; same data as 
