Fedrizziidae

Seeman, Owen D., 2007, Revision of the Fedrizziidae (Acari: Mesostigmata: Fedrizzioidea), Zootaxa 1480, pp. 1-55 : 8

Key to Genera of Fedrizziidae

1. Both sexes: distal seta (av1) on palp trochanter pilose ( Fig. 4 a); hypostome with seta h1 smooth ( Fig. 4 a); exopodal patterning between CxII–III usually spotted, sometimes striped. Female: sternogynial shield coming to an apical knob posteriorly, curving outwards anteriorly ( Fig. 3 a). Male: always with separate presternal shield (tetartosternum) bearing setae st1 ( Fig. 13 a); base of tritosternum same form as female.. ..................................................................................................................................................................... 2

- Both sexes: distal seta (av1) on palp trochanter barbed, if pilose then shortly so ( Fig. 4 b); hypostome with seta h1 barbed or branched ( Fig. 4 b); exopodal patterning between CxII-III striped or dark, sclerotised. Female: sternogynial shield rounded posteriorly, curving slightly inwards anteriorly ( Fig. 3 b). Male: many species without separate seta-bearing tetartosternum ( Fig. 13 c–f, Fig. 13 b an exception), often with presternal processes ( Fig. 13 d–f, 14a–f); base of tritosternum broader and shorter than female.......................... ................................................................................................................................................... Neofedrizzia

2. Both sexes: venter with ventrianal shield only .................................. Parafedrizzia buloloensis Womersley

- Both sexes: venter with separate ventral and ventrianal shield ( Fig. 15 ) ....................................... Fedrizzia

Figures

FIGURE 3. (A) Intercoxal region of female Fedrizzia abradoalves. The growth between Cx II – III is the fungus Rickia berlesiana; either spores or root-cell remnants of R. berlesiana are visible on the sternal shield. (B) Intercoxal region of female Neofedrizzia tragardhi. Abbreviations: st 1 - 4 = sternal setae 1 – 4; Ju = jugular shield; St = sternal shield; Sg = sternogynial shield. Scale bar = 100.

FIGURE 4. Gnathosomal region of male (A) Fedrizzia abradoalves sp. nov. and (B) Neofedrizzia vidua. Abbreviations: h 1 – 3 = hypostomal setae 1 – 3; av 1 = first anteroventral seta of palp trochanter. Arrow points to hypostomal tubercle. Scale bar = 10.

FIGURE 13. Adult male Fedrizziidae. Tetartosternum of (A) Fedrizzia sellnicki and (B) Neofedrizzia gordoni. (C) Presternal area of Neofedrizzia janae. Presternal processes of: (D) Neofedrizzia bunyas, (E) Neofedrizzia canestrinii and (F) Neofedrizzia lepas. Scale bar = 50.

FIGURE 15. Ventral shields of a female Fedrizzia oudemansi. Scale bar = 100.