Odontopeltis Pocock 1894
Creators: name: Pena-Barbosa, João P. P.
name: Sierwald, Petra
name: Brescovit, Antonio D.
Publisher: name: Zenodo
Year: 2013
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Diplopoda
Polydesmida
Chelodesmidae
Odontopeltis

description: GENUS ODONTOPELTIS POCOCK, 1894
Rhacophorus Koch, 1847, 59: 137. Type species Polydesmus conspersus Perty, 1833, by subsequent designation of Pocock, 1909: 168. Pre-occupied by Rhacophorus Kuhl & van Hasselt, 1822, Amphibia. Neave, 4: 30; Jeekel, 1970: 284; Hoffman, 1980: 151.
Odontotropis Humbert & deSaussure, 1869: 152. Type species Polydesmus (Odontotropis) clarazianus Humbert & deSaussure, 1869, by monotypy. Preoccupied by Odontotropis Agassiz, 1846, Mollusca. Attems, 1898: 408. Neave 3: 389, Neave 5: 180; Jeekel, 1970: 276; Hoffman, 1980: 151.
Odontopeltis Pocock, 1894: 509. New name for Rhacophorus. Silvestri, 1895a: 769, with type species Polydesmus conspersus, by direct substitution, see Rhacophorus. Silvestri, 1895b: 3; Pocock, 1909: 168; Neave 3, 386; Jeekel, 1970: 275; Hoffman, 1980: 151; Hoffman, 1981a: 55 (revalidation of the genus name).
Storthotropis Attems, 1938: 200. New name for Odontotropis Humbert & deSaussure, 1869, with type species Polydesmus clariazianus, by direct substitution, Odontotropis. Hoffman, 1980: 151 (synonymized with Odontopeltis); Neave 5: 259; Schubart, 1949: 18; Jeekel, 1970: 289.
Diagnosis: Males and females of Odontopeltis differ from other chelodesmid genera by the oval-shaped Tömösváry organ (character 3, Fig. 7A) and by the flat ozopore rim (Fig. 14B). Males of the genus differ from other Chelodesmidae by the following unique characters: absence of prefemoral processes, solenomere sickle-shaped (Fig. 4B) and laminar (Fig. 4A, mesal view). Acropodite with two apical processes, process A and process B, in addition to the solenomere; process B two times as long as process A; two macrobristles demarcate distal end of the prefemoral region (Fig. 4B); prefemoral region two to three times as long as the femoral region; spermatic groove straight in femoral region (mesal view), turning ectally in the solenomere. Females differ from those of all other genera in this data set, except Rondonaria and Macrocoxodesmus marcusi (Macrocoxodesmus marcusi, vulva of female unknown), by the short cyphopod, without apical elongation (Fig. 53). This same feature is observed in females of Rondonaria, which differ from Odontopeltis by the posterior opening of the cyphopod in the former.
Description: Body length between 80 mm (Odontopeltis conspersus) and 107 mm (Odontopeltis giganteus). Head: face with three rows of bristles (Fig. 6). Antenna: distal antennomere with modified bristles arranged in patches, bristles with a median projection (Fig. 58); very small spines on the ectal side. Body rings: integument with small tubercles on the metazonite (Fig. 57), without bristles. Coloration: animals preserved in alcohol range from black, red to white. Living specimens black with yellow paranota (Fig. 1). Collum: anterior border arched and posterior border straight. Sternite of body rings 5 and 6 with two or four ventral projections (Figs 17, 18), respectively. Ozopore arrangement: 5, 7, 9, 10, 12, 13, 15–19; ozopores surrounded by peritremata. Paranota: prominent and long, covering half of the legs. The first four body rings, body rings 18 and 19 with simple paranota without projections. Paranota of body rings 5 to 17 with teeth-like projections (Figs 15, 16), varying between the species. Body rings with ozopores show a prominent projection owing to the presence of peritrema. The species-specific teeth-projection formula of the paranota follows Schubart (1949), e.g.: 0-0-0-0-2-2-3-2-3-3-2-3-3-2-3-3- 3-0-0 (Odontopeltis conspersus). Legs: pregonopodal legs without modifications, but with higher concentration of bristles than on posterior legs. Telson: triangular, with five pairs of macrobristles on the dorsal side and two pairs in the apical region.
Male characters: Gonopore: coxae of second pair of legs ventrally elongated, sclerotized, the conical projection bearing an apical pore.
Gonopod opening on seventh body ring: trapezoidal, with a depression on the posterior edge and a membranous support basis of the gonopod.
Gonopods: cylindrical, projecting anteriorly; coxae with or without spiniform process. Spermatic groove always on the mesal side of the gonopod. Prefemoral region covered by bristles, with an angular basal projection (BPPf). Prefemoral process absent. Prefemoral region two or three times as long as femoral region. Femoral region without bristles; with three apical projections. Process B pointing dorsally; process A varying in direction. Solenomere sickle- shaped, with a median projection (Fig. 43). Spermatic opening with many internal spine-shaped projections (Fig. 41).
Female characters: Cyphopods: oval-shaped cyphopod located right behind the second pair of legs on the second body ring. Composed of two valves united by a membrane (Figs 71–73), with a third apically hinged sclerite, appressed against both lower valves.
Distribution: Known only from the south-eastern region of Brazil, recorded from the states of Espírito Santo, Minas Gerais and Rio de Janeiro.
Composition: Eight species, four previously described: Odontopeltis conspersus (Perty, 1833), Odontopeltis anchisteus Hoffman, 1981 (see Hoffman, 1981a), Odontopeltis clarazianus (Humbert & deSaussure, 1869), Odontopeltis giganteus (Schubart, 1949), and four new species: Odontopeltis tiradentes, Odontopeltis xica, Odontopeltis aleijadinho, and Odontopeltis donabeja.
description: Published as part of Pena-Barbosa, João P. P., Sierwald, Petra & Brescovit, Antonio D., 2013, On the largest chelodesmid millipedes: taxonomic review and cladistic analysis of the genus Odontopeltis Pocock, 1894 (Diplopoda; Polydesmida; Chelodesmidae), pp. 737-764 in Zoological Journal of the Linnean Society 169 (4) on pages 754-755, DOI: 10.1111/zoj.12086, http://zenodo.org/record/5291981