Ghilarovus Krivolutsky, 1966

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 : 227-228

publication ID	https://doi.org/ 10.24349/acarologia/20194327
publication LSID	lsid:zoobank.org:pub:70C869DC-D9CF-4C21-A400-FEF69DC0F022
persistent identifier	https://treatment.plazi.org/id/EF279E71-3212-9058-07BD-FA15FD37DA0C
treatment provided by	Carolina
scientific name	Ghilarovus Krivolutsky, 1966
status

Treatment

Ghilarovus Krivolutsky, 1966 View in CoL

Type species: Ghilarovus humeridens Krivolutsky, 1966 View in CoL

Expanded diagnosis. Adult. Small to medium sized mites, 312‒540. Integument. Surface

of notogaster smooth. Cerotegument granular, present laterally on podosoma ( Figs 5C, 5E View Figure 5 ). Prodorsum. Rostral margin denticulate ( Figs 1A View Figure 1 , 4A View Figure 4 , 5D View Figure 5 ). Rostrum and region lateral to seta

le with macropores ( Fig. 4A View Figure 4 ). Lamella absent. Carina extending from seta in posteriorly to bothridium ( Fig. 1A View Figure 1 ). Tutorium absent. Genal tooth absent. Pedotectum I uniformly curved; pedotectum II small, scaliform ( Fig. 5D View Figure 5 ). Laterorostral carina extending dorsal to pedotectum

I, following contour of pedotectum I, reaching anteriorly, midway to rostral margin ( Fig. 5D View Figure 5 ). Bothridial seta filiform, barbed ( Figs 1A View Figure 1 , 5C View Figure 5 ). Bothridium cup-shaped ( Fig. 6D View Figure 6 ). Dorsophragma absent; cheliceral retractor muscles inserting directly on prodorsal and notogastral cuticle ( Figs 1A View Figure 1 , 3D View Figure 3 ). Notogaster. Dorsosejugal scissure interrupted medially in region of insertions of cheliceral retractor muscles. Lenticulus absent. Octotaxic system expressed as macropores

( Figs 1A View Figure 1 , 6C View Figure 6 ). Posterior notogastral tectum divided or undivided; when divided, edges overlapping or not. 10 pairs of notogastral setae. Humeral region of notogaster with prominent process bearing seta c2 ( Figs 1A View Figure 1 , 3A View Figure 3 , 6C, 6D View Figure 6 ); seta c2 longer, thicker and more barbed than other notogastral setae. Lyrifissure ia usually modified as humeral sac; lyrissure im usually unmodified, occasionally modified as pyriform organ. Lateral podosomal and epimeral region. Apodemes III and IV absent ( Fig. 1B View Figure 1 ). Epimeral setal formula 3-1-3-3 or 3-1-3-2. Custodium present ( Figs 4B View Figure 4 , 5C View Figure 5 ). Discidium absent. Circumpedal carina absent. Porose areas Al, Am, Ah absent. Acetabula I‒IV in longitudinal alignment ( Fig. 5C View Figure 5 ). Anogenital region. Four pairs of genital setae; one pair aggenital setae; one or two pairs of anal setae; two or three pairs of adanal setae ( Figs 1B View Figure 1 , 5B View Figure 5 ). Postanal porose area absent. Lyrifissure ian absent; lyrifissure iad oblique, positioned lateral to anterior margin of anal plate ( Fig. 1B View Figure 1 ). Gnathosoma . Axillary saccule

of subcapitulum absent. Palp setal formula 0-1-2-3-9(1), solenidion baculiform, appressed

to palp surface, not forming double horn with eupathidium acm ( Figs 1C View Figure 1 , 6A View Figure 6 ). Chelicera chelate-dentate; setae of different forms: chb flattened, leaf-like ( Figs 1D View Figure 1 , 6A View Figure 6 ). Subcapitulum with seta h strongly directed anteriorly, setae m and a directed medially; adoral setae setose ( Fig. 6B View Figure 6 ). Postpalpal seta ep spiniform. Trägårdh’s organ present. Legs. Tridactylous. Leg IV not modified for jumping. Trochanters III and IV with dorsal ridge ( Fig. 5C View Figure 5 ); trochanter III with outwardly curved ventral edge ( Figs 5C, 5D View Figure 5 ). Femora III and IV with narrow ventral carina ( Fig. 5C View Figure 5 ). Porose areas adaxially on femora I‒IV and trochanters III and IV and ventrally on tibia and tarsi I‒IV ( Figs 2A‒E View Figure 2 ). Solenidion ω 1 most proximal setiform structure on tarsus II,