Arpthiracarus marginatus ( Mahunka, 1984 )

Niedbała, Wojciech, 2017, Ptyctimous mites (Acari, Oribatida) of Tanzania, Acarologia 57 (4), pp. 957-1072 : 1027-1030

Arpthiracarus marginatus ( Mahunka, 1984)

( Fig. 48 A-E)

Hoplophthiracarus marginatus Mahunka, 1984 .

Arpthiracarus marginatus: Niedbała 2001 .

I examined once again the paratype in alcohol.

Diagnosis — Measurements of paratype: prodorsum: length 404, width 308, height 151; notogaster: length 810, width 545, height 444. Large-sized species; colour brown, light; concavities only on borders of prodorsum and notogaster, ventral plates smooth. Prodorsum with median field trapezoidal, longer than lateral ones; anterior end of prodorsum convex in lateral view; lateral carinae distinct; posterior furrows well visible; sensilli relatively long, lanceolate end of head covered with small spines; interlamellar setae very long, strong, erect, covered with small spines in distal half; rostral setae long, thick, rough, directed inwards; lamellar setae spiniform; exobothridial setae minute; in> ro> ss> le> ex. Notogaster with long (c 1 /c 1 -d 1 =1,4) setae, thick, rough, with conical distal end; setae c 3 near anterior margin, setae c 1 and c 2 remote from margin, setae h 3 and ps 4 the shortest, setae h 1 and ps 1 the longest; vestigial setae invisible; 4 pairs of lyrifissures: ia, im, ip, ips present. Ventral region; formula of genital setae: 6(4+2): 3; anal and adanal setae rough, setae ad 1 and ad 2 considerably longer than anal and ad 3 setae. Leg setation complete; setae d on femora I remote from distal end.

Localities in Tanzania: Dodona Region: Mahunka 1984, Niedbała 2001; the Uluguru and Nguru Mts.

Distribution — Afrotropical species known only from Tanzania, probably endemic.

Figures

FIGURE 48: Arpthiracarus marginatus (Mahunka,1984) (holotype): A – prodorsum, dorsal view; B – prodorsum, lateral view; C – opisthosoma, lateral view; D – paraxial side of left genitoaggenital plate; E – left anoadanal plate; F – trochanter and femur of leg I.