Chrysomelidae of Fiji — Bryant and Gressitt 
9 
veins present; clypeus not divided; 
body very convex; elytra often broader 
than prothorax Eumolpinae 
Subfamily CRYPTOCEPHALINAE 
KEY TO FIJIAN GENERA OF CRYPTOCEPHALINAE 
1. Antenna generally much shorter than 
body, usually thickened distally; pygi- 
dium not conspicuously exposed (Mo- 
NACHINl) 2 
Antenna generally nearly as long as 
body, slender; pygidium more or less 
conspicuously exposed (Cryptoce- 
phalini) ; prosternum dilated forward 
toward mouth parts .... Loxopleurus 
2(1). Dorsum glabrous and shiny, lacking 
scale-like hairs; pronotum not pro- 
duced over scutellum 3 
Dorsum often bronzy, clothed with 
small scale-like hairs; pronotum pro- 
duced over scutellum, sometimes hid- 
ing it Pycnophthalma 
3 (2) . Prothorax more or less collared at apex, 
generally also punctured or grooved 
parallel to basal margin; scutellum 
narrow, tapering Coenobius 
Prothorax rarely margined or collared 
at apex, rarely punctured or margined 
parallel to basal margin; scutellum 
short, scutiform Ditropidus 
Tribe Monachini 
Genus coenobius Suffrian 
Coenobius Suffrian, 1857, Linn. Ent. 11: 61 
(type: C. triangulum Suffr.; Africa). 
Head broad and depressed, epistoma joined 
with the front. Eyes large, strongly notched, 
touching each other. Antenna short, first seg- 
ment oblong ovate, second shorter and more 
slender, the six apical dilated. Pro thorax con- 
tracted in front, somewhat convex, all the 
angles well marked, posterior margin serrate 
with a median lobe not very prominent. 
Scutellum with the sides parallel on basal 
two-thirds, converging to the apex, which is 
slightly raised. Elytron convex near scutellum, 
slanting steeply at side, shoulder prominent 
and epipleuron well marked; surface evenly 
punctate-striate. Prosternum one and a half 
times broader than long, slightly produced at 
anterior margin, with a marginal impression, 
posterior margin emarginate, with lateral an- 
gles prominent. Legs short; tarsi with third 
segment strongly notched, claw segment al- 
most entirely engaged in the preceding and 
claws dilated and toothed basally. 
KEY TO FIJIAN SPECIES OF Coenobius 
1. Anterior end of pro thorax less than 
three-fifths as broad as base of pro- 
thorax 2 
Anterior end of prothorax more than 
three-fifths as broad as base; prono- 
tum pale, sparsely punctured; elytron 
darkened in scutellar area 
geniostomae 
2(1). Dorsum, or at least elytron, dark 
pitchy 3 
Dorsum largely pale reddish testa- 
ceous, rarely marked with pitchy black 
on border, or outer portion, of disc of 
elytron 4 
3(2). Pronotum more or less vertical at side 
and with a distinct oblique groove, 
generally pitchy with side paler; pos- 
terior process of pronotum emarginate; 
elytron punctured in grooved rows 
above as well as at side. . zimmermani 
Pronotum not vertical at side and with- 
out an oblique groove, the lateral mar- 
gin distinctly flattened, generally en- 
tirely dark except for anterior collar, 
but sometimes with basal portion 
slightly paler; posterior process of 
pronotum large, not emarginate; ely- 
tron smooth above, with four distinct 
grooves at side. producticollis 
4(2). Discal punctures of elytron in part as 
large as interspaces; prothorax dis- 
tinctly grooved at side; frons nearly 
