Crotonia

Colloff, Matthew J. & Perdomo, Giselle, 2009, New species of Crotonia (Acari: Oribatida: Camisiidae) from Nothofagus and Eucalyptus forests in Victoria, Australia, with a redescription of the fossil species Crotonia ramus (Womersley, 1957), Zootaxa 2217, pp. 1-36 : 34-35

Key to Australian species of Crotonia

This key applies to both males and females.

1 Caudal apophyses f 1, h 1, h 2 and h 3 short, only slightly longer than wide, subequal in length, projecting dorsally from rounded caudal margin......................................................................... Lanceolata group: C. ovata Olszanowski, 2000

- With caudal apophyses broadly separated on either side of the caudal notogastral margin; those of setae h 2 markedly longer than others, projecting posteriorly ..................................................................................................................... 2

2 With setae c 1, c 2 and c 3 present....................................................................................................... Capistrata group…3

- With only setae c 1 and c 3 present ................................................................................................Cophinaria group…10

3 Setae of c series all long, flagelliform, subequal in length; caudal apophyses on stalk ........ C. borbora Luxton, 1987

- Setae of c series not all long, flagelliform and subequal; caudal apophyses not on stalk ............................................ 4

4 Caudal apophyses very long, close together; setae d 2 minute or represented by alveoli only........................................ ............................................................................................................................................ C. capistrata Luxton, 1987

- Caudal apophyses not as long, spaced further apart; setae d 2 not minute or represented by alveoli only .................... 5

5 Setae of c series all short, subequal; length of apophyses of setae h 2 only half that of their mutual distance ............... ................................................................................................................................ C. tryjanowskii Olszanowski, 2000

- Setae of c series of varying lengths .............................................................................................................................. 6

6 Setae f 1 and h 1 spiniform, their apophyses borne on short caudal extension; with broad lateral lines of plaques on notogastral shield ..................................................................................................................... C. ardala Luxton, 1987

- Setae f 1 and h 1 flagelliform, their apophyses borne on caudal margin of notogaster; notogastral shield with small tubercles laterally and a central porose region.............................................................................................................. 7

7 Setae c 3 extending anteriorly as far as bothridia .............................................................. C. tasmaniana Colloff, 2009

- Setae c 3 extending anteriorly as far as lamellar apophyses........................................................................................... 8

8 Posteriomedian borders of epimere I each produced into a prominent spine .................................. C. cornuta sp. nov.

- Posteriomedian borders of epimere I rounded .............................................................................................................. 9

9 Setae d 2 short, setiform ................................................................................................................. C. victoriae sp. nov.

- Setae d 2 long, flagelliform ................................................................................................................ C. alpina sp. nov.

10 Setae c 1 short, spiniform .......................................................................................................... C. gadubanudi sp. nov.

- Setae c 1 long, flagelliform........................................................................................................................................... 11

11 Notogastral shield with lateral strips reduced to a faint line; setae c 1 flagelliform, long, subequal to c 3, overlapping; marginal notogastral setae shorter than c 1; setae d 2 short, spiniform .................................... C. jethurmerae Lee, 1985

- Notogastral shield porose, with narrow lateral strips of small tubercles well-developed; setae c 1 clearly shorter than c 3; marginal notogastral setae longer than c 1; setae d 2 well-developed....................................................................... 12

12 With seven pairs of genital setae; caudal setae subequal in length, setae h 2 flagelliform, proximally-barbed............... ..................................................................................................................................... C. tasmanica Łochyńska, 2008

- With eight pairs of genital setae; caudal setae differing markedly in length, setae h 2 relatively short, stout, spiniform, barbed.......................................................................................................................................................................... 13

13 Caudal apophyses short, stunted; apophyses of h 2 longest, but less than twice the length of those of f 1 and h 1 ............ ........................................................................................................................................................... C. blacki sp. nov.

- Caudal apophyses long; apophyses of h 2 at least four times as long as those of f 1 and h 1 .......................................... 14

14 Setae d 2 markedly shorter than setae e 2; setae cp the longest of the marginal notogastral setae .................................... ....................................................................................................................................... C. pyemaireneri Colloff, 2009

- Setae d 2 long, subequal to e 2; setae cp and e 2 subequal............................................................................................... 15

15 Setae p 1 long, smooth, flagelliform; setae f 2 long, barbed, flagelliform; apophyses of setae h 2 diverging apically ....... ....................................................................................................................................................... C. momitoi sp. nov.

- Setae p 1 short, barbed, recurved; setae f 2 short, barbed, spiniform; apophyses of setae h 2 parallel................................ ........................................................................................................................................ † C. ramus ( Womersley, 1957)