Fedrizzia Canestrini 1884

Seeman, Owen D., 2007, Revision of the Fedrizziidae (Acari: Mesostigmata: Fedrizzioidea), Zootaxa 1480, pp. 1-55 : 15

Fedrizzia Canestrini 1884

Fedrizzia Canestrini, 1884: 707 . Type species: Fedrizzia grossipes Canestrini, 1884 , by monotypy. Toxopeusia Oudemans, 1927: 80 . Type species: Toxopeusia strandi Oudemans, 1927 , by original designation. Synonymy by Womersley (1959).

Diagnosis. Both sexes: dorsal shield sometimes with large dorsal pores; with separate ventral and ventrianal shield ( Fig. 15 ); lateral setae on ventrianal shield 10–30 long; exopodal region usually with spotted pattern; pores laterad CxIV in a longitudinal line; seta pv1 on femur III–IV usually unmodified, sometimes thickened; spur on palp trochanter usually with blunt process ( Figs 27–29 ); seta av1 on palp trochanter pilose ( Figs 27– 31 ); seta h1 smooth, usually straight; corniculi on hypostomal tubercles ( Fig. 4 a); both non-filamentous cheliceral excrescences ribbon-like with crenate and serrated edges ( Fig. 22 ). Female: sternogynial shield an inverted bell-shape, curving outwards anteriorly and bluntly pointed posteriorly ( Fig. 3 a). Male: base of tritosternum same form as female; with separate presternal shield bearing setae st1; anterior valve of genital opening larger than posterior valve ( Fig. 21 a), flanked by zero or one pairs of pores; CxI same form as female CxI.

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

FIGURE 21. Genital shields of male (A) Fedrizzia sellnicki and (B) Neofedrizzia camini. Scale bar = 10.

FIGURES 27 – 32. Palp trochanter of: 27, 28, Fedrizzia sellnicki; 29, Fedrizzia gilloglyi; 30, Fedrizzia parvipilus; 31, Parafedrizzia buloloensis and 32, Neofedrizzia lepas. b = blunt process, s = spine-like or denticulate process. Scale bar = 50.

FIGURES 22 – 26. Fedrizzia abradoalves sp. nov. 22, chelicera; 23, gnathosoma of female; 24, gnathosoma of male; 25, venter of female; 26, venter of male. Scale bar = 50 for 22 – 24; 100 for 25, 26.