Alismobates

Pfingstl, Tobias, 2015, The intertidal Fortuyniidae (Acari: Oribatida): new species, morphological diversity, ecology and biogeography, Zootaxa 3957 (4), pp. 351-382 : 380-381

Key to adults of species of Alismobates and Fortuynia (subspecies not included)

1 van der Hammen’s organ with ventral canal on epimeron I running ventrad of pedotectum I; 4 pairs of genital setae........ 2

- van der Hammen’s organ without ventral canal on epimeron I running ventrad of pedotectum I; 5 pairs of genital setae..... 5

2 Epimeral setation 3-1-2-1; longitudinal granular areas laterally on notogaster; faint reticulate pattern on median area of noto- gaster................................................................. Alismobates pseudoreticulatus sp. nov.

- Epimeral setation 3-1-2-2; notogastral surface structure different................................................. 3

3 Reticulate surface pattern on notogaster............................................... A. reticulatus Luxton, 1992

- Granular/punctuate surface pattern of notogaster............................................................. 4

4 Inhomogeneous notogastral granulation, lenticulus laterally framed by larger granulated areas.............................................................................................. A. inexpectatus Pfingstl & Schuster 2012

- Homogeneous notogastral granulation................................................. A. rotundus Luxton, 1992

5 Prodorsal channel (ce) of van der Hammen’s organ present.....................................................6

- Prodorsal channel (ce) of van der Hammen’s organ absent..................................................... 11

6 Fifteen pairs of notogastral setae; all notogastral setae very long.......................... .. Fortuynia longiseta sp. nov.

- Fourteen pairs of notogastral setae........................................................................ 7

7 Vestige of notogastral seta c3 present.......................................................................8

- Vestige of notogastral seta c3 absent....................................................................... 14

8 Notogastral setae p1-3 longer than seta dm; setae la, lm shaped leaf-like distally in males and simple in females.................................................................................... F. atlantica Krisper & Schuster, 2008

- Notogastral setae p1-3 shorter than seta dm, no obvious sexual dimorphism......................................... 9

9 No remarkable difference in length of notogastral setae, all long............................ .. F. m a c u la t a Luxton, 1986

- Anterior notogastral setae more than twice as long as posterior notogastral setae................................... 10

10 Notogastral setae dm and lm short; sensilla normal length for the genus....................... F. marina Hammen, 1960

- Notogastral setae dm and lm long; sensilla very short................... F. smiti Ermilov, Tolstikov, Mary & Schatz 2013

11 Epimeral setation 3-1-3-2.............................................................................. 12

- Epimeral setation 3-1-3-3..............................................................................13

12 One pair of aggenital setae......................................................... F. elamellata Luxton, 1967

- Aggenital setae absent.................................................. F. inhambanensis Marshall & Pugh 2002

13 Sensilla densely barbed.................... F. arabica Bayartogtokh, Chatterjee & Chan 2009 in Bayartogtokh et al. 2009

- Sensilla smooth........................ F. taiwanica Bayartogtokh, Chatterjee & Chan 2009 in Bayartogtokh et al. 2009

14 Aggenital setae absent................................................................ F. maledivensis sp. nov.

- One pair of aggenital setae present....................................................................... 15

15 Prodorsal channel (ce) short, not reaching anterior half of prodorsum.......................... F. sinensis Luxton, 1992

- Prodorsal channel (ce) long, reaching anterior half of prodorsum............................................... 16

16 Notogastral setae h1-3 and p1-3 very short.......................................... F. rotunda Marshall & Pugh, 2002

- Notogastral setae h1-3 and p1-3 long..................................................... F. yunkeri Hammen, 1963