Fedrizzioidea Trägårdh, 1937

Karg, W. & Schorlemmer, A., 2011, New Insights Into The Systematics Of Parasitiformes (Acarina) With New Species From South America, Acarologia 51 (1), pp. 3-29 : 5-6

Fedrizzioidea Trägårdh, 1937

Diagnosis — Female with sternal setae st2, st3, and st4 on an undivided shield ( Karg 1997a and present publication, Figure 6 ).

We distinguish two families:

• Fedrizziidae Trägårdh, 1937

• Klinkowstroemiidae Trägårdh, 1946.

W

.

and

Schorlemmer

Trigynaspida

1 – Sternal shield divided into 2 to 3 parts, as an exception undivided ( Figures 4 and 6 )

2 – Sternal shield as a rule divided into 2 to 6 parts ( Figure 4 ), Baker et al., (1958)

3 – Latigynial shields well developed, as a rule separate jugular shields ( Figure 4 ), Karg (1997a)

4 – Three primary shields protecting the genital orifice of females, tarsus IV of adults and deuto-nymphs with 21 setae

(formula: 4, 3/3, 1/1, 3/3, 3), deuto-nymphs with podonotal, mesonotal and pygidial shields ( Krantz & Ainscough 1990, Evans & Till 1979)

5 – Male aperture at the anterior margin of sternum ( Hirschmann & Zirngiebl-Nicol 1961, Evans and Till 1979)

6 – Adults with two shields on the dorsum ( Figure 3 )

7 – Female with sternal setae st2, st3 and st4 on an undivided shield ( Figure 6 ), Karg (1997a)

8 – In adults latigynial shields and mesogynial shields coalesced ( Hunter & Costa 1970, Karg 1997)

9 – Sternal shield of adults divided into 4 to 6 parts ( Baker et al., 1958)

One new species belongs to the Fedrizziidae . This species differs decisively from the hitherto known species. It proved to be necessary to erect a new genus.

Figures

FIGURE 6:: Holostethus longosetis n. sp. Female. a – Venter; b – Pedipalpus, 245 µm; c – Chelicera, 88 µm long.

FIGURE 4: Pyrosejus verticis n. sp. Female. a – Venter; b – Tectum, 34 µm wide; c – Chelicera, 35 µm long.

FIGURE 3: Pyrosejus verticis n. sp. Female. Dorsum, 348 – 374 µm long.