Topalia, Balogh & Csiszar, 1963

Colloff, Matthew J., 2019, The oribatid mite genus Topalia in Australia (Oribatida: Nosybeidae) and the taxonomic status of related families and genera, Zootaxa 4647 (1), pp. 290-321 : 303-304

publication ID

https://doi.org/ 10.11646/zootaxa.4647.1.18

publication LSID

lsid:zoobank.org:pub:0A0CA1A2-046F-4D23-A7A9-02D2DB974D4D

DOI

https://doi.org/10.5281/zenodo.10448708

persistent identifier

https://treatment.plazi.org/id/03A7BA3F-C920-FFD2-FF53-C66BFA7C349C

treatment provided by

Plazi

scientific name

Topalia
status

 

Key to the species of Topalia View in CoL

The following key is to adults, without the cerotegument present.

1. With the following combination of characters: notogastral ridges in an inverted T-shape; pair of condyles on interlamellar region of prodorsum; two pairs of epimeral foveolae present........ Topalia katyae View in CoL sp. nov. ( Australia, 347 × 213 µm; Fig. 6 View FIGURE 6 )

- Without the above combination of characters............................................................... 2

2. With single longitudinal notogastral ridge with pair of hollows laterally; with enantiophysis E2 (on epimeral border II) and enantiophysis V (on epimeral border III); interlamellar region with pair of acute condyles overhanging dorsosejugal suture................................................... Topalia africana Mahunka, 1985 View in CoL ( South Africa, 388 × 244 μm)

- Without the above combination of characters............................................................... 3......................................... Topalia problematica Balogh & Csiszár, 1963 View in CoL ( Argentina, 387 × 231 µm) - Without the above combination of characters............................................................... 4

4. With one pair of Longitudinal notogastral ridges curving medially, extending lateral and posterior of setae dm; at least some of setae of h and p series on squat tubercles; pedotectum I with teeth on anterior margin................................................................................... Topalia velata Hammer, 1966 View in CoL ( New Zealand, 350 × 221 μm)

- Without the above combination of characters............................................................... 5

5. With one pair of straight longitudinal notogastral ridges extending from anterior margin of notogaster as far as setae dm; interlamellar region with pair of short longitudinal laths extending from setae in to dorsosejugal suture, each terminating in a short, blunt condyle....................................... Topalia clavata Hammer, 1966 View in CoL ( New Zealand, 370 × 258 μm)

- Without the above combination of characters............................................................... 6

6. With one pair of longitudinal notogastral ridges strongly pinched or waisted (‘keyhole-shaped’) anterior of setae dm; with inverted V-shaped ridge in interlamellar region; setae le on anteriomedian edge of lamellae............................................................................. Topalia granulata Hammer, 1966 View in CoL ( New Zealand, 335 × 240 µm)

- With one pair of longitudinal notogastral ridges curving medially, narrow anterior of setae dm and expanding posteriorly around domed centrodorsal region.............................................................................. 7

7. Anteromedial edges of lamellae separated almost as far posteriorly as insertion points of setae in; (3) interlamellar region domed; anterior margin of notogaster transverse medially, then stepped posterior of bothridia; notogastral cerotegument of coarse irregular granules and tubercles overlaying fine pattern of angular foveolae...................................................................................... Topalia caliginosa View in CoL sp. nov. ( Australia, 370 × 226 µm; Fig. 1 View FIGURE 1 )

- Without the above combination of characters............................................................... 8

8. Anterior margin of notogaster curved, convex; cerotegument a network of large foveolae separated by angular ridges interspersed with minute granular tubercles; with series of parallel striae anterior of the genital plates............................................................................ Topalia dunlopi View in CoL sp. nov. ( Australia, 347 × 211 μm; Fig. 5 View FIGURE 5 ).

- Anterior margin of notogaster indented; cerotegument lacking angular ridges; region anterior of genital plates smooth..... 9

9. Notogastral cerotegument of fine granules; epimeres III and IV appearing separated.................................................................................... Topalia corinnensis View in CoL sp. nov. ( Australia, 416 × 252 μm; Fig. 4 View FIGURE 4 )

- Notogastral cerotegument of coarse foveolae and minute tubercles; epimeres III and IV appearing partly fused..................................................................... Topalia royi View in CoL sp. nov. ( Australia, 353 × 205 μm; Fig. 7 View FIGURE 7 )

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