CRYPTORHYNCHINAE

Zimmerman, Elwood C., 1942, Curculionidae of Guam, Insects of Guam I, Honolulu, Hawaii: Bernice P. Bishop Museum, pp. 73-146 : 101

SUBFAMILY CRYPTORHYNCHINAE KEY 'I'O 'fHE GUAM GENERA

1. Scutellum visible; metepisternum distinct throughout its length.................... 2

Scutellum hidden; metepisternum partially or entirely hidden, never distinctly visible and broadly exposed throughout its length................................ 6

2(1). Pectoral canal without any side walls, ending in the metasternum, mesosternal receptacle open or nearly so and densely squamose................ Deretiosus .

Pectoral canal ending in the mesosternum or prosternum, the mesosternal (or prosternal) receptacle usually distinctly cavernous and with distinct elevated side walls............................................................................................................ 3

3(2). Femora armed with a small or large tooth below................................................ 4

Femoraedentate.......................... .

4(3). Pectoral canal ending in the prosternum, densely squamose throughout; prosternal receptacle with the high side walls contiguous to the coxae; eyes closely approximated below...................................................................... Camptorhinus .

Pectoral canal ending in the mesosternum, not squamose between the coxae; eyes very widely separated below.......................................................................... Oreda .

5(3). Metasternum between the mid and hind coxae about twice as long as the breadth of a mesocoxa; femora not grooved for the reception of the tibiae; dorsum with fascicles and spongy scaling; body subparallelsided ..................................................................................................................Menectetorus .

Metasternum between the mid and hind coxae not as long as the breadth of a mesocoxa; femora shallowly grooved for the reception of the tibiae; dorsal scaling smooth, not at all fasciculate or spongy; body subrhomboidal TODO

6(1). Femora minutely or distinctly toothed (examine fore pair carefully); pectoral canal in part or entirely squamose......................................................... 7

Femora edentate; pectoral canal bare.......................................................................... 8

7(6). Form subquadrate; pectoral canal squamose throughout; mesocoxae separated by the breadth of a coxa; metasternum shorter between mid and hind coxae than the breadth of the base of the femora.......................... Anaballus .

Form elongate; pectoral canal squamose only in front of the coxae; mesocoxae separated by only about half the breadth of a coxa; metasternum longer between the mid and hind coxae than the base of the femora.... Euscepes .

8(6). Pectoral canal terminating between the fore and mid coxae, always before? the mesocoxae .......................................................................................................... Acalles .

Pectoral canal terminating between the mesocoxae, distinctly behind their foremargins.............................. .

9(8). Dorsum conspicuously multituberculate.............................................................. Daealus .

Dorsum not tuberculate; minute species, Guam species less than 2 mm. long ....................................................................................................Microcryptorhynchus .