Catalogue of the family Ologamasidae Ryke (Acari: Mesostigmata) Author Castilho, Raphael C. Author Silva, Edmilson S. Author De, Gilberto J. Author Halliday, Bruce text Zootaxa 2016 4197 1 1 147 journal article 10.5281/zenodo.168445 449eccf3-b63f-437d-945f-85c5e01dadb2 1175-5326 168445 Key to genera of Ologamasidae (adult females) 1. Podonotal and opisthonotal shields completely separated...................................................... 2 - Podonotal and opisthonotal shields fused to form a holonotal shield, line of fusion may or may not be visible............ 22 2. Epistome with club-shaped anterocentral extension; peritrematal and exopodal shields fused by a narrow connection posterior to stigma..................................................................... Geogamasus (part) ( Figs 1–4 ) - Epistome without club-shaped anterocentral extension; peritrematal shield not fused to exopodal shield, or fused to exopodal shield posterior to stigma by a connection wider than width of peritreme......................................... 3 3. Dorsal shield setae inserted on long stalks............................................... Oriflammella ( Figs 5–8 ) - Dorsal shield setae not inserted on stalks.................................................................. 4 4. Opisthonotal and ventrianal shields fused.................................................................. 5 - Opisthonotal and ventrianal shields not fused ................................................................ 9 5. Presternal plates absent; pretarsus I absent................................................ Euepicrius ( Figs 9–12 ) - Presternal plates present; pretarsus I present................................................................ 6 6. With one pair of presternal plates.................................................... Gamaselliphis ( Figs 13–16 ) - With two pairs of presternal plates....................................................................... 7 7. Opisthogastric region without latero-diagonal fissure; peritreme extending anteriorly to anterior margin of coxa II............................................................................................ Hiniphis ( Figs 17–20 ) - Opisthogastric region with a distinct latero-diagonal fissure; peritreme extending anteriorly to region of coxa I........... 8 8. Peritrematal shield fused only to exopodal shield near coxa IV.............................. Desectophis ( Figs 21–24 ) - Peritrematal shield fused to exopodal shield near coxa IV and ventrianal shield..................... Acuphis ( Figs 25–28 ) 9. Podosomal section of dorsum with 28 or more pairs of setae................................................... 10 - Podosomal section of dorsum with fewer than 25 pairs of setae............................................... 12 10. Opisthosomal section of dorsum with more than 30 pairs of setae................................ Pilellus ( Figs 29–32 ) - Opisthosomal section of dorsum with fewer than 21 pairs of setae............................................. 11 11. Podosomal section of dorsum with 32 pairs of setae and a medial unpaired seta; trochanter IV with six setae, genu III with ten setae and tibia III with nine setae.................................................. Notogamasellus ( Figs 33–36 ) - Podosomal section of dorsum with 28 pairs of setae; trochanter IV with five setae, genu III with nine setae and tibia III with eight setae................................................................ Podonotogamasellus ( Figs 37–40 ) 12. Peritreme extending anteriorly at most to median region of coxa III....................... Allogamasellus ( Figs 41–44 ) - Peritreme extending anteriorly at least to median region of coxa II.............................................. 13 13. Setae av2 , pv2 on tibia I long, thick, spine-like............................................................ 14 - Setae av2 , pv2 on tibia I unmodified...................................................................... 15 14. Tarsus I with a small pair of claws; dorsal shield setae j 1 not on prominent protuberance; on genu I av2 spine-like, al1 unmod- ified......................................................................... Heterogamasus ( Figs 45–48 ) - Tarsus I without claws; dorsal shield setae j 1 on prominent protuberance; on genu I al1 spine-like, av2 unmodified......................................................................................... Evanssellus ( Figs 49–52 ) 15. Presternal plates absent............................................................. Cyrtolaelaps ( Figs 53–56 ) - Presternal plates present............................................................................... 16 16. With one pair of presternal plates; if with two pairs (in Rhodacaroides aegypticus ), peritrematal shield not fused with exopodal shield near coxa IV.................................................................................. 17 - With 2–5 pairs of presternal shields; if with two pairs, peritrematal shield fused with exopodal shield near coxa IV....... 19 17. Dorsal shields with some setae pilose and/or spatulate.................................... Acugamasus ( Figs 57–60 ) - Dorsal shields without pilose or spatulate setae............................................................ 18 18. Peritrematal shield not fused with exopodal shield near coxa IV........................... Rhodacaroides ( Figs 61–64 ) - Peritrematal shield fused with exopodal shield near coxa IV.............................. Euryparasitus ( Figs 65–68 ) 19. Peritrematal and ventrianal shields fused.................................................. Periseius ( Figs 69–72 ) - Peritrematal and ventrianal shields not fused............................................................... 20 20. Opisthonotal section of dorsal shield with 12 pairs of setae................................ Solugamasus ( Figs 73–76 ) - Opisthonotal section of dorsal shield with more than 12 pairs of setae........................................... 21 21. With two or three pairs of presternal plates............................................... Gamasellus ( Figs 77–80 ) - With five pairs of presternal plates.................................................... Litogamasus ( Figs 81–84 ) 22. Line of fusion between podonotal and opisthonotal shields distinctly visible, straight or U-shaped.................... 23 - Line of fusion between podonotal and opisthonotal shields indistinct or absent.................................... 24 23. Line of fusion between podonotal and opisthonotal shields straight; peritrematal shield and exopodal shield near coxa IV not fused........................................................................ Gamasellevans ( Figs 85–88 ) - Line of fusion between podonotal and opisthonotal shields U-shaped; peritrematal shield and exopodal shield near coxa IV fused.............................................................................. Rykellus ( Figs 89–92 ) 24. Dorsal shield fused with ventrianal shield................................................................ 25 - Dorsal shield not fused with ventrianal shield.............................................................. 34 25. Opisthogaster with incisions behind coxa IV directed almost transversely; dorsal shield setae fine, smooth and pointed except j 1 aciculate, z 4, z 5 and r 3 distally pilose................................................... Pyriphis ( Figs 93–96 ) - Opisthogaster with incisions behind coxa IV directed strongly posteriorly, if transversely then most dorsal shield setae acicu- late or pilose....................................................................................... 26 26. Dorsal shield with 50 or more pairs of setae............................................... Caliphis ( Figs 97–100 ) - Dorsal shield with 45 or fewer pairs of setae.............................................................. 27 27. Sternal shield fused with endopodal shield near coxa IV..................................................... 28 - Sternal shield not fused or fused only by a narrow strip to endopodal shield near coxa IV.......................... 30 28. Exopodal shields near coxae II–III–III fused; with 0–3 pairs of presternal plates.............. Gamasiphis ( Figs 101–104 ) - Exopodal shields near coxae II–III–III divided at median level of coxa III; with one pair of presternal plates........... 29 29. Dorsal and ventrianal shields with some pilose setae....................................... Cymiphis ( Figs 105–108 ) - Dorsal and ventrianal shields with all setae smooth..................................... Heydeniella ( Figs 109–112 ) 30. Peritrematal shield fused with exopodal shield near coxa IV.................................................. 31 - Peritrematal shield not fused with exopodal shield near coxa IV............................................... 33 31. With one pair of presternal plates................................................... Ologamasus ( Figs 113–116 ) - With two pairs of presternal plates....................................................................... 32 32. Setae st 1– st 4 in longitudinal line or st 4 slightly laterad to imaginary line between st 1– st 3; tibia IV with nine setae..................................................................................... Hydrogamasus ( Figs 117–120 ) - Seta st 3 mediad to imaginary line between st 1, st 2 and st 4; tibia IV with ten setae.... .. Gamasiphoides (part) ( Figs 121–124 ) 33. With two pairs of presternal plates; peritreme extending anteriorly to region of coxa I......... Laelaptiella ( Figs 125–128 ) - With one pair of presternal plates; peritreme extending anteriorly to median region of coxa II.... Stylochirus ( Figs 129–131 ) 34. Outer margin of peritreme crenated............................................... Antennolaelaps ( Figs 132–135 ) - Outer margin of peritreme straight...................................................................... 35 35. Leg II greatly enlarged, tarsus and tibia II with cuticular apophyses and with some setae very heavy, thickened and spur-like............................................................................. Pachymasiphis ( Figs 136–139 ) - Leg II not greatly enlarged, tarsus and tibia II without very heavy, thickened and spur-like setae...................... 36 36. Genu I with 12 setae (two ventral setae)............................................ Gamasellopsis ( Figs 140–143 ) - Genu I with 13 setae (three ventral setae)................................................................. 37 37. Peritrematal shield not fused with exopodal shield.......................................................... 38 - Peritrematal shield fused with exopodal shield............................................................. 41 38. Sternal shield not fused with endopodal shield near coxa IV; epistome with a club-shaped anterocentral extension................................................................................... Neogamasellevans ( Figs 144–147 ) - Sternal shield fused with endopodal shield near coxa IV shield; epistome without a club-shaped anterocentral extension... 39 39. Pretarsus I sessile................................................................ Sessiluncus ( Figs 156–159 ) - Pretarsus I pedunculate............................................................................... 40 40. Genu III with nine setae (two ventral setae) and genu IV with ten setae (five dorsal and two ventral setae)............................................................................................ Onchogamasus ( Figs 148–151 ) - Genu III with eight setae (one ventral seta) and genu IV with eight or nine setae (four or five dorsal and one ventral setae)................................................................................... Gamasitus ( Figs 152–155 ) 41. With two pairs of presternal plates........................................... Gamasiphoides (part) ( Figs 160–163 ) - With one pair of presternal plates, partially fused or not fused to sternal shield................................... 42 42. Sternal shield fused with endopodal shield near coxa IV......................... Queenslandolaelaps ( Figs 164–167 ) - Sternal shield not fused with endopodal shield near coxa IV.................................................. 43 43. Epistome with a club-shaped anteromedian extension; connection between peritrematal and exopodal shields behind stigma narrower than peritreme..................................................... Geogamasus (part) ( Figs 168–171 ) - Epistome without a club-shaped anteromedian extension; connection between peritrematal and exopodal shields behind stigma wider or narrower than peritreme....................................................................... 44 44. Pretarsus I not pedunculate and subequal to other pretarsi............................... Parasitiphis ( Figs 172–175 ) - Pretarsus I pedunculate and smaller than other pretarsi....................................................... 45 45. Insemination pore located on trochanter III............................................. Athiasella ( Figs 176–179 ) - Insemination pore located on coxa III........................................... Hydrogamasellus ( Figs 180–183 )