Ghilarovus robisoni, Behan-Pelletier & Knee, 2019

Behan-Pelletier, Valerie M. & Knee, Wayne, 2019, Ghilarovus robisoni n. sp., first record of Zetomotrichidae (Acari, Oribatida) from North America, Acarologia 59 (2), pp. 226-241 : 229

Ghilarovus robisoni n. sp.

Zoobank: 8C2690BD-DDFB-4C9F-8A49-9548F60CF136 Figures 1‒6

Figures

Figure 1 Ghilarovus robisonin. sp., adult female: A – dorsal, only trochanters I and II illustrated; B – ventral, legs and subcapitulum not illustrated; C – palp; D – chelicera, antiaxial aspect,Trägårdh’s organ not illustrated. Scale bars: A, B = 50 μm; C, D = 20 μm.

Figure 2 Ghilarovus robisonin. sp., adult female: legs I–IV, all antiaxial aspect: A – leg I, trochanter not illustrated; B – tarsus I at higher magnification; C – leg II, trochanter not illustrated, tarsus II at higher magnification than femur, genu, tibia II; D – leg III, trochanter not illustrated, tarsus III at higher magnification than femur, genu, tibia III; E – leg IV. Scale bars: A, E; C (femur, genu tibia), D (femur, genu tibia) = 50 μm; B, C, D (tarsus) = 20 μm.

Figure 3Ghilarovus robisonin. sp., adult female: A – lateral of notogaster showing humeral sachs(), lyrifissure im, opisthonotal gland opening (gla); B – posterior of notogaster showing overlapping lobes of posterior tectum (arrow); C – humeral region of notogaster, with insertion of seta c (seta c absent) and arrow to pores adjacent to setac; D – dorsosejugal region, with arrow to muscle sigilla (attachments for cheliceral muscles); E – seta c; F – opisthonotal gland; G – detail of notogaster by lyrifissureips. Scale bars: A = 50 μm; B-D = 20 μm.

Figure 4 Ghilarovus robisonin. sp., adult female: A –lateralof prodorsum showing dentate rostrum; arrow to pores lateral of setain; B – lateral of podosoma in region of acetabula I-IV; trochanters I, II and IV visible; arrow to custodium; C – detail of lateral of podosoma in region of acetabula I-III; arrow to ridge dorsal of pedotectum I; D – tarsus II and distal part of tibia II; arrow to porose region ventrally on tarsus II; E

Figure 5 Ghilarovus robisonin. sp., scanning electron micrographs of adult female: A – dorsal habitus, with arrow to dorsal carina on trochanter IV; B – ventral habitus; C – lateral habitus, with arrow to pedotectum I; (leg II broken off); D – lateral of propodosoma, showing small cerotegument patch above prodorsal and notogastral macropores (short arrows); long arrow to carina dorsal of pedotectum I; (leg II broken off); E – detail of humeral region and lateral of prodorsum, showing fine ridges on lateral of prodorsum (arrow); cerotegument on porose areas of trochanters and femora (arrows); pedotectum I and II in dorsal view. Scale bars: A‒C = 100 μm; D, E = 25 μm.

Figure 6 Ghilarovus robisonin. sp., scanning electron micrographs of adult female: A – lateral of subcapitulum; with small arrow to adoral seta or, and showing rutellum (ru) and difference in morphology between cheliceral setaechaandchb; B – subcapitulum in ventral view; C