Neofedrizzia janae Seeman

Seeman, Owen D., 2007, Revision of the Fedrizziidae (Acari: Mesostigmata: Fedrizzioidea), Zootaxa 1480, pp. 1-55: 42-44

publication ID 10.5281/zenodo.176844

publication LSID

persistent identifier

treatment provided by


scientific name

Neofedrizzia janae Seeman

sp. nov.

Neofedrizzia janae Seeman   sp. nov.

( Figs. 46–49 View FIGURES 46 – 49 )

Type specimens. Holotype, F, THAILAND: Chaing Mai Pr., Chaing Dao W.R., Patang Stn., 19.54ºN 98.97ºE, 500 m alt., 13.vii. 2002, Cognato & Gillogly, ex 5 Aceraius helferi   . Deposited in EMBT. Paratypes, 2 F, 3 M, same data as holotype ( S 74177 View Materials - 81).

Diagnosis. Both sexes: idiosoma   850–860 long; anterior hyaline projection does not extend past CxI; exopodal patterning between CxII –III striped; pedofossae III present, IV absent; seta h 1 with 10–11 barbs; distal spine-like process on palp femur 16–18 long; one non-filamentous excrescence ribbon-like, the other a serrated blade; femur III and IV with small lamellae. Female: sternal shield smooth; seta st 1 2–3 long, much shorter than base of tritosternum; setae st 2 -st 4 minute; sternogynial shield smooth, anterior margin straight. Male: tetartosternum absent; sternal processes not articulated with sternoventral shield, symmetrical, with rounded ends, the internal margins bearing setae st 1; sternoventral shield (anterior of genital opening) smooth; seta st 1 10 long; genital opening placed between CxII –III, flanked by 4–7 pores.

Description. Female: Idiosoma   850–860 long, 580–590 wide; anterior hyaline projection with 1 pair of barbed setae 38 long. Tritosternum base 45 long, 28–30 wide. Tetartosternum and sternal shield smooth; tetartosternum crown-shaped; st 1 2–3 long, st 2-4 minute. Sternogynial shield 125–128 long, 118–123 wide, smooth, 1–4 pores and 2–3 setae flanking each side of shield. Ventral shield weakly lineate laterally, smooth medially and in intercoxal region; 1 pair large semi-circular pores posteromedially of Cx IV, 1 pair of eye-like pores, 4–6 pairs of small round pores, and 7 pairs of small (<5 long) setae. Ventrianal shield 175–178 long, 390–410 wide, with lineate reticulation, paranal setae 45–50 long, other setae minute; anterolateral corner of ventrianal shield not fused with ventral shield. Marginal shields with weak lineate reticulation. Pedofossae III and CxIV-marginal suture present.

Legs. TrI with seta pv 1 slightly thicker than seta av 1. FeI with seta pv 3 longer and thicker than setae pv 1 and pv 2. FeII with ventral lamella, seta pv 1 25 long, setiform, seta pv 2 18 long, setiform, seta ad 1 barbed and thickened. GeII with setae ad 3, pd 3 spine-like. FeIII with small lamella distal to av 1; seta pv 1 barbed, thickened; seta pd 1 spine-like. GeIII and TiIII with pd setae thickened. FeIV with lamella, expanded distal to av 1, seta pv 1 thick, spine-like, seta pd 2 just distal to ad 2; seta ad 2 thickened. TaII –IV with seta av 2 and av 3 spinelike, subequal in length to seta av 3.

Gnathosoma   . Seta h 1 curved, with 4–5 barbs, 55 long, distance between h 1 –h 1 10; h 2 with 3 small barbs, 38 long; h 3 8 long, posterolaterad h 2; palpcoxal seta 15 long. Corniculi on small tubercles. Palp, seta av 1 on trochanter with 13 barbs, 43 long; av 2 with 0–3 tiny barbs, 38–43 long; palp femur with distal spine 16–18 long. Chelicera, fixed digit 138–148 long, movable digit 38–42 long; fixed digit with 2 large and 1 minute subapical tooth; excrescences consist of a large brush-like process, a serrated blade, and a ribbon-like process with a toothed margin that extends well beyond the end of chelicerae.

Male: Idiosoma   860 long, 590 wide. Tritosternum base broad, 53–58 long, 58–60 wide. Sternal processes not articulated with sternoventral shield, symmetrical, with rounded ends, the internal margins bearing setae st 1. Sternal shield anterior of genital opening smooth. Seta st 1 smooth, 10 long. Genital opening 50–53 long, 52–53 wide, with 4–7 large pores laterad the opening. Large lamellae on Cx I. Gnathosoma   . Seta h 3 posterolaterad h 1, level with h 2.

Remarks. Male Neofedrizzia janae   do not have separate presternal processes or a separate tetartosternum; instead, the anterior margin of the sternoventral shield has two lateral processes. This modification of the sternoventral shield is also present in three other species: N. leonilae Rosario & Hunter   , N. tani Pope & Chernoff   and N. sulawesi   sp. nov.

Etymology. It is a pleasure to name this species for my dear mother Jan Seeman.


Department of Agriculture, Thailand