The Dyobelba tectopediosa species-group (Acari: Oribatida: Damaeidae) from the Southeastern USA, with a key to world species of Dyobelba and notes on their distribution Author Bayartogtokh, Badamdorj Author Norton, Roy A. text Zootaxa 2007 1591 39 66 journal article 10.5281/zenodo.273916 986d369d-b482-40e0-8d17-b68025b17c5f 1175-5326 273916 Key to adults of world species of Dyobelba 1. Epimeral neotrichy present, i.e. epimere II with three pairs of setae .......................................................... 2 - Epimeral neotrichy absent, i.e. epimere II with one pair of setae................................................................ 3 2. Trochanter IV with 2 setae; femora III and IV each with 4 setae; enantiophyses B , D , E2 , V and discidium absent; sensillus flagellate ( Korea ) ......................... D. paucituberculata Bayartogtokh, Choi & Aoki, 2001 - Trochanter IV with 1 seta; femora III and IV each with 5 setae; prodorsal tubercle Ba , ventral tubercle E2a , and discidium present; sensillus not flagellate, nearly straight distally ( China , Mongolia ) ................. ............................................................................................................... D. biclavata Wang & Norton, 1993 3. Propodolateral apophysis P present (species of the Appalachian region and southeastern USA ) .............. 4 - Propodolateral apophysis P absent (species with other distribution) .......................................................... 9 4. Prodorsum without alveolate sculpturing; prodorsal enantiophysis D and epimeral enantiophysis E2 present; leg IV almost twice the ventral body length, femur about twice length of trochanter..................... ....................................................................................................................... D. carolinensis ( Banks, 1947 ) - Prodorsum with alveolate sculpturing; enantiophyses D and E2 absent; leg IV only slightly longer than ventral body length, femur IV about same length as trochanter ( tectopediosa group)................................ 5 5. Notogastral setae (except p row) directed radially, smooth, most nearly straight. Sensillus flagellate, with shepherd’s crook bend ....................................................................................... D. tectopediosa Jacot, 1938 - Notogastral setae (except p row) directed anteriorly ( c row) or posteriorly ( l, h rows), noticeably barbed, most noticeably curved. Sensillus of various shapes................................................................................... 6 6. Sensillus finely attenuate but relatively short, tip flexible but without shepherd’s crook bend; dorsosejugal region without alveolae, but with pair of irregular and variable small ridges; central prodorsal swellings alveolate and without tubercle Aa................................................................................... D. behanae sp. nov. - Sensillus flagellate, with shepherd’s crook bend; dorsosejugal region alveolate; prodorsal swellings various................................................................................................................................................................ 7 7. Prodorsal tubercle Aa absent; propodolateral apophysis strongly projecting anterolaterally; spinae adnatae minute, little longer than lyrifissure ia .......................................................................... D. crossleyi sp. nov. - Prodorsal tubercle Aa present; propodolateral apophysis weaker, not distinctly projecting; spinae adnatae small to moderate sized, but at least twice the length of ia ......................................................................... 8 8. Alveolae continuous across mid-level of prodorsum, including central prodorsal swellings; with dark transverse line at level of rostral setae in transmitted light; notogastral setae only slightly swollen in middle region; femora I and II with strong, nearly circumferential ridge basally .................. D. dindali sp. nov. - Alveolae incomplete medially on prodorsum, absent from central prodorsal swellings; without transverse line at level of rostral setae in transmitted light; notogastral setae broader, flame-shaped; femora I and II with normal, simple structure ...................................................................................... D. granulata sp. nov. 9. Sensilli very long, flagellate; notogastral setae barbed ( Japan ) .......... D. kushiroensis Enami & Aoki, 2001 - Sensilli short¸ not flagellate; notogastral setae smooth ............................................................................. 10 10. Prodorsal enantiophyses B , D and ventral enantiophyses E2 , V completely developed; anterior parastigmatic tubercle Sa and discidium blunt or rounded at tip; spinae adnatae absent; setae d present on tibia II ( Chile ) ...................................................................................................................... D. armata Norton, 1979 - Prodorsal tubercle Bp , enantiophysis D and ventral enantiophysis E2 absent; anterior parastigmatic tubercle Sa and discidium sharply pointed at tip; spinae adnatae well developed; seta d absent from tibia II (New Hampshire, USA ) ....................................................................... D. reevesi Norton & Ryabinin, 1994