122 
Psyche 
[December 
sonotum with a median dark band 16 
16. Mesonotum with two yellow or yellowish-white stripes 
separated by a narrow, dark brown median band; 
sides dark brown to black : L trivittatus 
Mesonotum with the golden brown median stripe slightly 
constricted at the middle; with two short sublateral 
stripes posteriorly : r hirsuteron 
Mesonotum with the median band widening posteriorly ; 
apical margins of abdominal segments with fine long 
brownish hairs : aurifer 
17. With one to three small mesepimeral bristles ; mesono- 
tum with brownish-yellow scales uniformly distrib- 
uted : .v .Antrudens 
With three or more stout mesepimeral bristles ; mesono- 
tum with a median stripe or paired brown median 
lines 18 
18. Mesonotum with paired brown median lines 19 
Mesonotum with a median brown stripe 20 
19. Mesonotum yellow or bronzy with a pair of black median 
lines, often joined into a median stripe; legs deep 
black: diantxus 
Mesonotum with paired median lines separated by a 
broad golden brown line : impiger 
Mesonotum with paired median lines separated by a 
narrow yellow line ; sides grayish : communis 
20. Mesonotum with the median band laterally expanded 
near the middle : trichurus 
Mesonotum with the median band only slightly darker 
than the lateral margins: punctor* 
: imp lacabilis * 
* There are no satisfactory characters with which to 
separate these species. In A. punctor the median band 
of the mesonotum may in some cases have a middle line 
of slightly paler scales. The last abdominal segment of 
A. implacabilis is usually pale scaled whereas in punctor 
it has a V-shaped dark area. 
Larvae 
1. Air tube with tuft within pecten 2 
Air tube with tuft beyond pecten 8 
