Cymbaeremaeidae

Dorsal view of Ametroproctus oresbios, from Canadian Biodiversity Information Facility.

Belongs within: Circumdehiscentiae.

The Cymbaeremaeidae are a small but morphologically diverse family of oribatid mites. The genera Ametroproctus and Scapuleremaeus have been treated as a separate family Ametroproctidae due to their possession of well-developed prodorsal lamellae (absent in other cymbaeremaeid genera), but Behan-Pelletier (1988) united the two families on the basis of their similarly apheredermous, plicate nymphs with a characteristic arrangement of porose areas on the body. These porose areas are absent from the genus Scapheremaeus, commonly included in Cymbaeremaeidae but here excluded. The legs of Cymbaeremaeidae are usually tridactyle, but the Fijian Seteremaeus spinosus has monodactylous legs. In Cymbaeremaeus, the notogaster is divided into distinct marginal and central areas though both share the same ornamentation of rough, irregular wrinkles (Balogh & Balogh 1992).

Characters (from Behan-Pelletier 1988, excluding Scapheremaeus): Immatures with plicate integument. Apheredermous nymphs with unideficient setation. Paraproctal atrichosy in larva, protonymph and deutonymph. Seta d present on genua and tibiae of immatures, usually absent from adult (present in some Ametroproctus). Immatures with prodorsal and opisthosomal porose areas or sacculi. Tarsi of immatures with subunguinal bilobed pulvillus. Adult prodorsum with pedotecta I and II, without genal incision, without lamellae. Palpal eupathidium acm not attached to solenidion, inserted on large tubercle. Mentum with tectum. Notogaster with or without lenticulus and humeral projection; without tectal border posteriorly. Pteromorphs absent. Porose areas of octotaxic system absent. Ten or thirteen pairs of notogastral setae, c1 and c3 absent, d series present or absent. All leg femora, tibiae and tarsi generally with sacculi in adult (porose areas present in one species of Ametroproctus). Seta s on tarsus I non-eupathidial.

<==Cymbaeremaeidae [Ametroproctidae, Cymbaeremaeinae, Cymbaeremaeoidea] NB-P09
    |--Jujeremus foveolatus WP99
    |--Seteremaeus Hammer 1971 S04
    |    `--*S. spinosus Hammer 1971 S04
    |--Bulleremaeus Hammer 1966 S04
    |    |--*B. reticulatus Hammer 1966 S04
    |    `--B. tuberculatus Hammer 1966 S04
    |--Cymbaeremaeus Berlese 1896 S04
    |    |--*C. cymba (Nicolet 1855) [=Eremaeus cymba; incl. C. pulvillifer Willmann 1931] S04
    |    |--C. foliatus (Balogh & Csiszár 1963) [=Scutovertex foliatus] S04
    |    `--C. silva Fujikawa 2002 S04
    |--Scapuleremaeus Behan-Pelletier 1989 S04
    |    `--*S. kobauensis Behan-Pelletier 1989 S04
    `--Ametroproctus Higgins & Woolley 1968 NB-P09, S04
         |--A. (Ametroproctus) S04
         |    |--*A. (A.) oresbios Higgins & Woolley 1968 S04
         |    |--A. (A.) aridus Behan-Pelletier 1987 S04
         |    `--A. (A.) tuberculosus Behan-Pelletier 1987 S04
         `--A. (Coropoculia Aoki & Fujikawa 1972) S04
              |--A. (*C.) reticulata (Aoki & Fujikawa 1972) [=*Coropoculia reticulata] S04
              |--A. (C.) beringianus Behan-Pelletier 1987 S04
              |--A. (C.) canningsi Behan-Pelletier 1987 S04
              `--A. (C.) lamellatus (Schweizer 1956) [=Cymbaeremaeus lamellatus] S04

*Type species of generic name indicated

REFERENCES

Balogh, J., & P. Balogh. 1992. The Oribatid Mites Genera of the World vol. 1. Hungarian Natural History Museum: Budapest.

Behan-Pelletier, V. M. 1988. Systematic relationships of Ametroproctus, with modified definition of Cymbaeremaeidae (Acari: Oribatida). In: Channabasavanna, G. P., & C. A. Viraktamath (eds) Progress in Acarology vol. 1 pp. 301–308. E. J. Brill: Leiden.

[NB-P09] Norton, R. A., & V. M. Behan-Pelletier. 2009. Suborder Oribatida. In: Krantz, G. W., & D. E. Walter (eds) A Manual of Acarology 3^rd ed. pp. 430–564. Texas Tech University Press.

[S04] Subías, L. S. 2004. Listado sistemático, sinonímico y biogeográfico de los ácaros oribátidos (Acariformes, Oribatida) del mundo (1758–2002). Graellsia 60 (número extraordinario): 3–305.

[WP99] Walter, D. E., & H. C. Proctor. 1999. Mites: Ecology, Evolution and Behaviour. CABI Publishing: Wallingford (UK).