Occigamasus sp. 4

Juvara-Balş, Ilinca, 2019, Occigamasus, a new genus of pergamasine mites, with description of two new species from the west coast of North America (Parasitiformes: Gamasina: Parasitidae), Acarologia 59 (4), pp. 551-570 : 567

Occigamasus sp. 4

Material examined — Canada. British Columbia, Vancouver Island: 2 females, Heather Mt. trail, 10 miles NW Caycuse, from hemlock-huckleberry litter, 1000 m, 4 Aug. 1975 ; 1 female,

1 deutonymph, Comox Glacier, mature hemlock, fir, spruce forest, 176 m alt., moist litter (AF

384), 27 Aug. 1983, coll. A. Fjellberg.

Morphological characteristics —Female ( Fig. 7G ): endogynium a big sack ventrally

with a bifid structure having denticles between the branches, on the anterior margin with a denticulate club surrounded by big denticles; epigynium, dorsally, with a sclerotized ellipsoidal structure with a central spine; gv1 located lateral to seta st3; distance gv1–gv1 = 144. Trochanter

IV, dorso-laterally, a small protuberance with a tiny spine apically. Measurements. Female: tarsus I = 252–288, tarsus IV = 336–384; seta pd2 = 156 (Heather Mt Trail) to 240 (Comox Glacier).

Figures

Figure 7 Occigamasusspp., female endogynia: A –Occigamasussp. 1; C – Occigamasus makarovaen. sp.; E – Occigamasussp. 2; F – Occigamasussp. 3; G – Occigamasussp. 4; I, J – Occigamasussp. 5. Subapical structure of epigynium: B –Occigamasussp. 1; D – O. makarovaen. sp.; H – Occigamasussp. 4; K – Occigamasussp. 5.