1 Antennae with 6 or more segments......................................................................................................................... 4

- Antennae with fewer than 6 segments.................................................................................................................... 2

2(1) Thorax with 3 pairs of longitudinal lines of spinose setae dorsally (including marginal setae); anal lobes conspicuous; antennae with 3 or fewer segments............................................................................................................... 3

- Thorax with 2 pairs of longitudinal lines of spinose setae dorsally (including marginal setae); anal lobes absent or slightly rounded; antennae with 4 or more segments....................................................................... Tectococcus

3(2) Hind femur with 1 seta; anal lobes sclerotized......................................................................... Pseudotectococcus

- Hind femur with 3 setae; anal lobes apparently unsclerotized.......................................................... Aculeococcus

4(1) Loculate pores absent from dorsum; much enlarged spinules absent from dorsum............................................... 5

- Loculate pores present on dorsum of abdominal segment I; dorsum with much enlarged spinules medially on posterior thoracic and anterior abdominal segments............................................................................. Apiococcus

5(4) Body margin without conspicuous microducts (if microducts present, marginal microducts same size as other dorsal microducts); spinose setae not cupolate-shaped, not in dermal pocket...................................................... 6

- Body margin with conspicuous microducts (marginal microducts conspicuously larger than other dorsal microducts); marginal spinose setae cupolate-shaped and in small dermal pocket............................................. Melzeria

6(5) Submedial row of ventral loculate pores absent (if loculate pores present, in a submarginal row)....................... 7

- Submedial row of ventral loculate pores present................................................................................................. 10

7(6) Cruciform pores present submarginally on thorax; loculate pores present in a submarginal band on abdomen.............................................................................................................................................................. Oregmopyga *

- Cruciform pores absent; loculate pores restricted to near spiracles, absent from abdominal segments................ 8

8(7) Spinose setae without conspicuously bulbous base; hind tibia with 3 or 4 setae................................................... 9

- Spinose setae with base conspicuously bulbous; hind tibia with 2 setae................................................. Capulinia

9(8) Spinose setae longer than length of abdominal segment; discoidal pores present on dorsum (probably modified microtubular ducts)....................................................................................................................... Carpochloroides

- Spinose setae shorter than length of abdominal segment; discoidal pores absent on dorsum...... Pseudocapulinia

10(6) Cruciform pores present....................................................................................................................................... 12

- Cruciform pores absent........................................................................................................................................ 11

11(10) Anal lobes platelike, not protruding from body margin, heavily sclerotized....................................... Chilechiton

- Anal lobes plate not platelike, not protruding from body margin, weakly sclerotized.................. Hempelicoccus *

12(10) Labium 3 segmented; dorsum without simple pores............................................................................................ 13

- Labium 1 segmented; dorsum with many simple pores..................................................................... Exallococcus

13(12) Anal lobes weakly sclerotized, not platelike; ventral abdomen with 4 pairs of longitudinal lines of setae...................................................................................................................................................................... Acanthococcus

- Anal lobes heavily sclerotized, platelike; ventral abdomen with 3 pairs of longitudinal lines of setae................................................................................................................................................................................ Icelococcus