Adoribatella, Ferolocella, Joelia and Ophidiotrichus (Acari, Oribatida, Oribatellidae) of North America Behan-Pelletier, Valerie M. Zootaxa 2013 3637 3 254 284 62SNB Grabowski, 1971 Grabowski 1971 [151,508,1165,1191] Arachnida Oribatellidae Ferolocella Animalia Sarcoptiformes 5 259 Arthropoda genus    Ferolocella carolina(Banks, 1947), p. 112; Grabowski 1971, p. 44, Norton & Kethley 1990, p. 477   Diagnosis. Adult. Species comprising this genus are unique among Oribatellidae(Grandjean 1953b, Bernini 1975) in having the following combination of character states. Rostrum with medial and lateral dentes ( Fig 5C). Octotaxic system developed as 4 pairs of saccules. Notogaster with 10 pairs of setae, cand lapositioned lateral to lm. Lamellae long, broad, with large cusps medially converging; cusps with large lateral dens and short medial dens; translamella present ( Fig. 3). Interlamellar region developed as deep, squared pocket between lamellae, extending to or posteriad dorsosejugal scissure ( Figs. 3, 5Aarrow). Bothridial wall flask-shaped, with indentation laterally. Dorsophragmata clearly developed as pair. Genal tooth broad, subrectangular in shape, with longitudinal ridge ventrolaterally, with dens ventrodistally ( Fig. 4B, arrow). Tutorium lamelliform, cusp subrectangular, tapered, with dentes distally, lying parallel to dorsal contour of prodorsum in lateral aspect, extending well anterior of insertion of rostral seta. Pedotectum I with distinct concave indentation in ventral wall, not evident as distinct tache pectoralewhen ventral mounts of specimens viewed in transmitted light. Custodium present, with free distal point ( Figs. 4A, 5D). Postanal porose area present. Small axillary saccule present at base of palp. Chelicera chelatedentate. Seta mof gena setose, similar in size and shape to seta a. Palp setal formula 0–2–1–3–9(1); eupathidium acmsubequal in length to solenidion, forming double horn with solenidion along length ( Fig. 5E). Humerosejugal porose organ Ah expressed as porose area. Porose organ Al expressed as porose area. Legs heterotridactylous. Femur III with seta l’absent; seta v'of genua I and II present. Setae l”of genua I and II and tibia II spinose, seta l”of tibia I setose. Single anterodorsal spine present between solenidia φ1 and φ2 of tibia I. Immatures. Unknown.   Remarks. The typespecimen of  Ferolocella carolinais lost ( Marshall et al.1987). Grabowski (1971) based his redescription of  Oribatella carolinaBanks, 1947on a specimen identified by Banks, but the location of this specimen is unknown. Norton & Kethley (1990: p. 422) established the provenance of specimens that Berlese used to describe  Oribatella tessellata, viz.the campus of the University of Missouri, Columbia, Boone Co., Missouri. They collected topotypes (see below), and also examined typespecimens in Florence. They established the synonymy  Ferolocella tessalata(Norton & Kethley 1990: p. 477), and also established the synonymy of   O. tessellataand  F. carolina. Grabowski (1971). defined  Ferolocellaby “the translamella in this oribatid is reflected posteriorly under the dorsosejugal suture to form a box or cell-like structure. [] The name is derived from the Latin feros, to bear or carry, and locella, a tiny box or cell.” This squared pocket between lamellae, extending to or posteriad the dorsosejugal scissure is an autapomorphy for  Ferolocella. However, the strongly reduced medial dens of this genus is not apomorphic. A similar development of the medial cusp is found in  Oribatella sexdentata(Berlese, 1916), redescribed by Bernini (1977) and   O. nortoniBehan-Pelletier, 2011. Grabowski’s (1971) attribution of ferosto Latin is incorrect; the etymology is Greek, from pherein(φέρειν), meaning ‘to carry’ (H. Schatz, pers. comm.) Shtanchaeva and Subías (2009) presented a revised diagnosis for  Ferolocella, based on their acceptance of the synonymy of  GendzellaKulijev 1977with  Ferolocella,and their redescription of  Gendzella cribrariaKulijev, 1977. They described the structure of the translamella as “Translamella wide; in  F. tessellatashaped like loop resembling frame under anterior margin of notogaster”. The ‘loop’ described by Shtanchaeva and Subías (2009) reflects the two-dimensional illustrations of Grabowski (1971, his Figs 1, 3), but does not encompass the unique, three-dimensional pocket formed by the translamella and the medial edge of the lamellar cusp which is very deep, extending posteriad of the dorsosejugal scissure and is almost cubic in shape, forming the diagnostic “cell” of Grabowski (1971) ( Figs. 3A, 5A).   GendzellaKulijev 1977was considered a junior synonym of  Ferolocellaby Subías (2004). I reject this synonymy, as there is no evidence in this genus of the apomorphic structure of the translamella ( cf. Grabowski 1971), i.e., the squared pocket between lamellae, extending to or posteriad dorsosejugal scissure, in the description or illustrations of the typespecies,  Gendzella cribrariaKulijev  Gendzella cribrariadoes have the reduced medial dens of the lamellar cusp found in  Ferolocella, but as noted above this is not unique to  Ferolocella.