Bimichaeliini, Womersley, 1944

Key to species of North American Bimichaeliini

1. Ridges of integument with large and/or middle-sized lamellae ( Fig. 51A, C–E).................................... 2

- Ridges of integument smooth ( Figs. 19B–E, 51B)................. Glabromichaelia vazquezrojasi gen. nov. and sp. nov.

2. Middle-sized lamellae in clumps, forming rows with small lamellae and granulae ( Figs. 27A, 51C, 52E–G, 55A).......... Minimamichaelia gen. nov.............................................................................. 3

- Large lamellae in roundish to polygonal cells ( Fig. 51A, D, E).................................................. 4

3. Cilia of sensilla ve and seta vi similar in length; tibiae I, II and III with 2 adjoining baculiform solenidia; tibia I with short baculiform solenidia almost equal in length; tibia II with baculiform solenidia less than half of the segment’s length ( Figs. 27A, 28B–D, 52E–H, Uusitalo 2010: figs. 110–119)............................... M. subnuda ( Berlese, 1910) comb. nov.

- Cilia of sensilla ve shorter than cilia of seta vi; tibiae I, II and III with 2 clearly separated baculiform solenidia; tibia I with proximal baculiform solenidia twice as long as the distal solenidia; tibia II with baculiform solenidia more than half of the segment’s length ( Fig. 55)................................................................................................(Undescribed Minimamichaelia sp. from South Africa; see Remarks under Minimamichaelia gen. nov.)

4. Ciliated dorsal setae with less than 5 distinct cilia; roundish areoles filled with tiny granulae and a few middle-sized laminae ( Figs. 23A, 25A, 51A, 52A–C). ( Bimichaelia Thor, 1902 View in CoL )..................................................... 5

- Ciliated dorsal setae with 5 or more countable cilia or setae lanceolate; polygonal areoles filled with small and a few middle-sized lamellae ( Figs. 51D, E, 53A–G, I–K)................................................................. 6

5. Sensilla ve simple, sparsely barbed basally; dorsal setae acicular with 2 long cilia; genu I with 2 ceratiform solenidia ( Figs. 23A, 24A)............................................................................ B. pallida ( Ewing, 1913)

- Sensilla ve ciliated all along; dorsal setae with more than 3 clear cilia; genu I with 1 ceratiform solenidion ( Figs. 25A, 26A)....................................................................................... B. logani sp. nov.

6. Both soft integument and in -area (= sclerotised integument) of the prodorsum with additional setae; tarsus I with 3 baculiform solenidia ( Figs. 40A, 41B, 42A, 43A, B, 44A). ( Laminamichaelia View in CoL (sensu stricto) Uusitalo, 2010)...................... 7

- Lateral rims of prodorsum (soft integument) with additional setae (if any); sclerotised in -area with only one pair of setae; tarsus I with 2 baculiform solenidia ( Figs. 29, 30A, 31A, 32A, 33A, 34A, 35A, D, 36A, 37A, 53A–H). ( Quartusmichaelia gen. nov.) ............................................................................................... 8

7. in -area with 3–4 setae; tibiae I, II and III with 2 baculiform solenidia aligned one after another; tibiae I and II without piliform solenidia; tarsus I with a spike-like famulus I in distal position ( Figs. 40A, 41A–E)................. L. knowltoni sp. nov.

- in -area with 5–8 setae; tibiae I, II and III with baculiform solenidia side by side; tibiae I and II with piliform solenidia; tarsus I with a knob-like famulus I abaxial to solenidion ω2 ( Figs. 42A, 43A–H, 44A, 53L)....... L. arbusculosa ( Grandjean, 1943) View in CoL .

8. All dorsal setae ciliated, i.e. lanceolate setae absent ( Figs. 35B, 36B)............................................ 9

- Most dorsal setae lanceolate ( Figs. 29B, 31B, 33B)......................................................... 10

9. Filamentous sensilla ve densely ciliated by cilia of various lengths from top to bottom; tarsus II with one baculiform solenidion ( Fig. 35A, B, E).................................................... Q. shibai ( Uusitalo et al. 2020) comb. nov.

- Filamentous sensilla ve distally with 4–5 branches and basally barbed; tarsus II with two baculiform solenidia ( Figs. 36A, B, 37B)............................................................ Q. dimixsetosa ( McDaniel, 1980) comb. nov.

10. Dorsal midline with some ciliated setae; legs I and II without lanceolate setae ( Figs. 29B, 31B, 53E–H)................ 11

- Dorsal midline with only lanceolate setae; legs I and II with lanceolate setae ( Figs. 33B, 34A, B)....... Q. plumata sp. nov.

11. Filamentous sensilla ve simple; setae in lanceolate ( Figs. 29A, 53F)............... Q. setigera ( Berlese, 1904) comb. nov.

- Filamentous sensilla ve forked; setae in ciliated ( Figs. 31A)................................... Q. lanceolata sp. nov.