MIMOPEUS 115 
FINAL INSTAR LARVA 
On a superficial level, larvae of Mimopeus are very difficult to distinguish from 
each other specifically. The following description is based on larvae of two species 
only M. elongatus and M. opaculus. This covers two of the three species groups 
here recognised, but may have to be modified slightly when the larvae of the other 
species are known. The description is confined mainly to characters considered by 
van Emden (1947) to be of generic or tribal importance. 
Body elongate, cylindrical, fairly heavily sclerotised. Head dark brown, remainder 
of body yellowish to dark brown. 
Head. Labrum with 2 long discal setae, 2 long lateral setae and 2 pairs of shorter 
setae within outer angle. Mandible with a dorso-lateral elevation bearing a pair of 
stout setae. Frontoclypeus bearing anteriolaterally on each side a pair of stout 
setae, and one more slender seta on each side near basal margin. Ocelli small with 
one pair on each side. Antennae 2 - segmented. Mouthparts of typical tenebrionid 
type, maxillary mala with a spur towards apex of inner edge. Epicraniai suture 
faint. Genae and postgenae bearing numerous setae. 
Key to Table 3 
Character exhibited by all members of relevant species. 
Character exhibited by most members (> 70%) 
Character exhibited by some members (30-70% ) 
Character exhibited by few members (< 30%) 
MAS x 
Granules visible at 25x magnification present on pronotum. 
Granules visible at 25x magnification present on elytra. 
Granules visible at 25x magnification present on prosternum. 
Granules visible at 25x magnification present on epipleuron. 
Pronotal microsculpture visible at 25x magnification. 
Elytral microsculpture visible at 25x magnification. 
Aedeagus of rugosus type. 
Aedeagus of opaculus type. 
Aedeagus of granulosus type. 
10. Aedeagus of intermediate type. 
11. Base of elytra rounded. 
12. Base of elytra marked by distinct raised carina. 
13. Elytra shoulder prominent narrowly rounded. 
14. Outer angle of anterior tibia dentate (approximately as in fig.) 
15. Elytral costae plainly visible to naked eye. 
16. Pronotal punctation of humeralis type. 
17. Pronotal punctation of opaculus Banks Pen. type. 
18. Pronotal punctation of granulosus type (coarse, steep-sided, fig.) 
19, Elytral submarginal channel narrower than in humeralis, 
20. Elytral submarginal channel inner angle distinct. 
21. Setae of discal elytral punctures visible at 25x magnification. 
22. Maxillary emargination dentate laterally. 
OF aS a 
