Quick guide to family of Acari · Reference: Cook, D.R. (1983). Contributions of the American...
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NO Quick guide to New Zealand freshwater Acari families Prepared by Dean Olsen (2007) Is the mite red/orange & large (>2 mm), & the coxae occupying not more than half of ventral surface? Is the genital acetabula (cavity) partly or entirely covered by flaps? Hydrachnidae YES NO Eylaidae Are the lateral eyes fused with medial eye plate? YES NO Continued overleaf Limnocharidae NO Is the medial eye plate wider than long? YES NO Stygotoniidae Are claws present on the fourth leg? YES NO Are coxae I-IV fused? Oxidae Anisitsiellidae Is the body laterally compressed, legs originating at front of body? NO YES Hydryphantidae Zelandothyadidae Ctenothyadidae YES NO Does the palpal tibia of palp-IV have a pair of enlarged setae? NO YES Sperchontidae Is coxa-I separate medially, & coxa-II divided into two portions? YES Is the dorsum covered with numerous star- shaped sclerites? YES ventral view lateral view ventral view NO YES lateral eye plates leg-IV palp palp medial eye plate medial eye plate coxae (ventral view) 07/11 coxa-I coxa-II enlarged setae claws present flaps flaps genital acetabula genital acetabula fourth leg star-shaped sclerites claws absent setae not enlarged
Transcript of Quick guide to family of Acari · Reference: Cook, D.R. (1983). Contributions of the American...
NO
Quick guide to New Zealand freshwater Acari familiesPrepared by Dean Olsen (2007)
Is the mite red/orange & large (>2 mm), & the coxae occupying not more than half of ventral surface?
Is the genital acetabula (cavity) partly or entirely covered by flaps?
HydrachnidaeYES
NO
Eylaidae
Are the lateral eyes fused with medial eye plate?
YES
NO
Continued overleaf
LimnocharidaeNO
Is the medial eye plate wider than long?
YES
NO Stygotoniidae
Are claws present on the fourth leg?
YES
NO
Are coxae I-IV fused?
Oxidae
Anisitsiellidae
Is the body laterally compressed, legs originating at front of body?
NO
YES
Hydryphantidae
Zelandothyadidae
CtenothyadidaeYES
NO
Does the palpal tibia of palp-IV have a pair of enlarged setae?
NO
YES
Sperchontidae
Is coxa-I separate medially, & coxa-II divided into two portions?
YES
Is the dorsum covered with numerous star-shaped sclerites?
YES
ventral view lateral view
ventral view
NO
YES
lateral eye plates
leg-IV
palp
palp
medial eye plate
medial eye plate
coxae (ventral view)
07/11
coxa-I
coxa-II
enlarged setae
claws present
flaps flaps
genital acetabula
genital acetabulafourth leg
star-shaped sclerites
claws absent
setae not enlarged
NO
NOPionidae
Hygrobatidae
Nudomideopsidae
Unionicolidae
Continued from previous page
NO
Arrenuridae
Athienemanniidae
Is the genital pore flanked by two plates bearing numerous acetabula?
NO
YES
LimnesiidaeYES
NO
Does leg-IV lack claws?
YES
Are the palps uncate(tarsus able to fold against tibia)?
YES
YES
Do the palps have two setae-bearing tubercles on the ventral surface of P-IV?
NO Is P-IV strongly curved?
YES
NO
MomoniidaeYES
NO
Does the tarsus of leg-I have a single, proximally-directed claw?
Aturidae (Notoaturinae)YES
Dorsal shield
or
Mideopsidae
YES
References: Cook, D.R. (1983). Contributions of the American Entomological Institute 21(2). 224 p. Figures reproduced with permission.Cook, D.R. (1991). Stygologia 6: 235-253.Smit, H. (1996). Acarologia XXXVII, 45-53.
NO
Do palps-II & III have transparent plate-like ventral projections?
Do the pedal claws lack lobed ventral clawlets, (associated with sponges)?
uncate palp
P-IV strongly curved
palp
dorsal view dorsal view
leg-Isingle claw
leg-IVclaws absent
acetabular plate
genital pore
ventral projections
palp
palp
setae-bearing tubercles
palp
claws present
tibia
tarsus
This Quick guide was funded by Terrestrial and Freshwater Biodiversity Information System (TFBIS) programme number 194.
Pedipalp(=palp)
Leg-I
Leg-II
Leg-III
Leg-IV
Limnesia zelandica, ventral view
Tarsal claws
Water mite anatomyPrepared by Dean Olsen (2007)
Genital acetabulum
Coxae
Coxa-I
Coxa-II
Coxa-III
Coxa-IV
Trochanter
Leg
Tarsus
TibiaPatella
Femur
Metatarsus
Claws
Palp
Tarsus (P-V)
Tibia (P-IV)
Patella (P-III)
Femur (P-II)Trochanter (P-I)
Reference: Cook, D.R. (1983). Contributions of the American Entomological Institute 21(2). 224 p. Figures reproduced with permission.
This Quick guide was funded by Terrestrial and Freshwater Biodiversity Information System (TFBIS) programme number 194.
