Neofedrizzia lepas Seeman

Seeman, Owen D., 2007, Revision of the Fedrizziidae (Acari: Mesostigmata: Fedrizzioidea), Zootaxa 1480, pp. 1-55 : 46-47

Neofedrizzia lepas Seeman sp. nov.

( Figs 51 – 52 )

Type specimens. Holotype, F, AUSTRALIA: Queensland: Mt Lewis, Mt Lewis Rd, 31.i.1996, Seeman (S74182). Paratypes, 2 F, 3 M, same data as holotype (S74183-87). F, M, Atherton Tableland, Gadgarra, 28.i.96 (S74188-89); F, M, Mt Lewis, 10.ii.2005, C. Burwell (S74190-91). All specimens from Austropassalus hultgreni Mjöberg and deposited in QM. F, same data as holotype, deposited in ANIC.

Diagnosis. Idiosoma 1050 –1130 long; anterior hyaline projection does not extend past CxI; exopodal patterning between CxII–III striped; pedofossae III present, IV absent; seta h1 with 10–11 barbs; distal spine-like process on palp femur minute or absent; one non-filamentous excrescence ribbon-like, the other a short serrated blade; femur III and IV with large lamellae. Female: sternal shield smooth; seta st1 73–85 long, longer than base of tritosternum; setae st2-4 4–6 long; sternogynial shield smooth, anterior margin straight. Male: tetartosternum absent, presternal processes articulated with sternoventral shield, symmetrical, with truncate ends, directed slightly inwards; sternoventral shield (anterior of genital opening) smooth; seta st1 40–47 long; genital opening placed between CxII–III, flanked by 14–15 pores.

Description. Female: Idiosoma 1130 long, 810 wide; anterior hyaline projection with 1 pair barbed setae 50–55 long. Tritosternum base 55–60 long, 30–35 wide. Tetartosternum crown-shaped, reticulate, 43–50 long, 141–146 wide, st1 73–85 long. Sternal shield smooth, st2-4 4–6 long. Sternogynial shield 130–133 long, 128– 130 wide, smooth, with 6–10 pores flanking shield. Ventral shield with lineate reticulation laterally, smooth medially; 1 pair of large semi-circular pores posteromedially of CxIV, 1 pair of eye-like pores, ca. 10 pairs of small round pores, and ca. 10 pairs of small (<5 long) setae. Ventrianal shield 185–200 long, 450–485 wide, with lineate reticulation, paranal setae 68 long, other setae minute; anterolateral corner of ventrianal shield not fused with ventral shield. Marginal shield with lineate reticulation. Pedofossae III and CxIV-marginal suture present.

Legs. TrI with seta pv1 slightly thicker than seta av1. FeI with seta pv3 longer and thicker than setae pv1 and pv2. FeII with ventral lamella, seta ad1 barbed and thickened. GeII with seta ad3 and pd3 thickened. FeIII with lamella, expanded distal to av1, seta pv1 spine-like. GeIII with seta pd2 spine-like. FeIV with lamella, expanded distal to av1, seta pv1 thick, spine-like, seta ad2 thickened, seta pd 2 in line with seta ad2. TaII–IV with seta av2 spine-like, shorter than seta av3. Legs II–IV with setiform ad and pd setae.

Gnathosoma . Seta h1 curved, broad (4 wide), with 10–11 barbs, 72–73 long, distance between h1–h1 10; h2 barbed, 53 long; h3 14 long, posterolaterad h2; palpcoxal seta 20 long. Corniculi not on tubercles. Palp, seta av1 on trochanter with many barbs, seta av2 with few barbs. Chelicera, fixed digit 198–200 long, movable digit 51–55 long; fixed digit with 2 large and 1 minute subapical tooth; excrescences consist of a large brush-like process, a small serrated blade, and a ribbon-like process with a crenate margin that extends well beyond end of chelicerae.

Male: Idiosoma 1050 –1070 long, 750 wide. Tritosternum base broad, 68–75 long, 71–73 wide. Presternal processes symmetrical, about 50 long, pointed slightly inwards, with two small lobes anteriorly. Seta st1 barbed, 44–47 long. Sternal shield anterior of genital opening smooth. Genital opening 63–66 long, 68–71 wide, with 14–15 large pores laterad the opening. Large lamellae on Cx I. Seta h3 posterolaterad h1, anterior of h2.

Remarks. This species resembles N. camini and is probably found only with the unusual passalid beetle Au. hultgreni .

Etymology. The specific name is Latin for “limpet”, and alludes to the limpet-like appearance of the Fedrizziidae .

Figures

FIGURES 51 – 52. Neofedrizzia lepas sp. nov. 51, venter of female; 52, venter of male. Scale bar = 100.