Provisional revision of the genus Odontocera Audinet-Serville, 1834 (Coleoptera: Cerambycidae). I: exclusions, new rank, synonymies and the description of two new genera Author Clarke, Robin O. S. text Insecta Mundi 2018 2018-06-29 637 1 27 journal article 10.5281/zenodo.3708132 19f10ac5-196a-43b0-9bb1-bee8765f1bec 1942-1354 3708132 4E9DBB33-A234-485C-A9A4-CFBAB3D9FD03 Key to the genera and species of Odontocroton and Rhinobatesia [Users of the key should bear in mind that the author did not have specimens of O. flavirostris , O. monnei and O. sanguinolentus to study, nor females of O. melzeri , O. soror and O. apicalis .] 1. Antennomere XI not dentate or weakly dentate; not robust, length body/width metasternum in male 5.42–8.30, in female 5.24–6.05; pronotum tuberculate or apex of elytra yellow or ochreous; lengths of elytra/forebody 1.36–1.50; width/length of rostrum 2.07–2.50; width of one inferior lobe of eyes/interocular distance in male 4.50–11.15, in female 0.83–1.40; length of elytra/ width across humeri 3.45–4.13; lengths metatarsomere I/II+III 1.40–1.55 ( Fig. 1–34 ); South America....................................... [ Odontocroton Clarke n. gen. ] 2 — Antennomere XI strongly dentate; robust, length body/width metasternum in male 5.16, in female 4.58; pronotum not tuberculate and apex of elytra dusky; lengths of elytra/ forebody; 1.13–1.21; width/length of rostrum 1.61–1.68; width of one inferior lobe of eyes/ interocular distance in male 3.40, in female 2.00; length of elytra/width across humeri 2.67–2.76; lengths metatarsomere I/II+III 0.74–0.94 ( Fig. 35–39 ); Mexico , Central America.................................. Rhinobatesia rugicollis ( Bates, 1880 ) 2(1). Smaller, 9.3–12.7 mm , slender species, length body/width metasternum in male 6.45–8.30, in female 6.05; basal constriction of prothorax not fossate; antennae filiform, basal segments fimbriate below; metafemoral clave fusiform, shorter than peduncle; base of mesosternal process 3–6× narrower than coxal cavity; genitalia: lateral lobes of tegmen narrow, parallel and not narrowed to apex ( Fig. 1–13 ).................................. [Group A] 3 — Larger, 13.1–17.1 mm (but see O. monnei ), less slender species, length body/width metasternum in male 5.42–5.85, in female 5.24–5.36; basal constriction of prothorax fossate; antennae subfiliform to subcrassate, basal segments with dense, thick setae (but see O. septemtuberculatus ); metafemoral clave cylindrical, distinctly longer than peduncle; base of mesosternal process approximately 2× narrower than coxal cavity; genitalia: lateral lobes of tegmen broad, divergent and narrowed to apex ( Fig. 14–34 )................................... [Group B] 6 3(2). Antennae shorter, reaching apical third of urosternite II; elytra narrowly fissate........... 4 — Antennae longer, reaching apex of urosternite III; elytra dehiscent or fissate.............. 5 4(3). Antennae shorter, reaching apical third of urosternite II; pronotum uneven but not tuberculate; apex of elytra ochreous, reaching apex of urosternite III; male abdomen cylindrical and hardly annulate, soleate depression on urosternite V with strongly raised sides, abdominal process with approximately 45° slope ( Fig. 9–10 ); Brazil (SC)......... O. melzeri ( Fisher, 1952 ) — Antennae longer, reaching base of urosternite III; pronotum tuberculate; apex of elytra yellow, reaching basal quarter of urosternite IV; male abdomen subcylindrical and distinctly annulate, soleate depression on urosternite V with weakly raised sides, abdominal process vertical ( Fig. 11–13 ); Brazil (GO, MG, ES, SP).......................... O. soror ( Gounelle, 1911 ) 5(3). Antennae shorter, reaching apical third of urosternite II; prothorax comparatively short, length/ width 1.09; elytra dehiscent or fissate, apex reaching middle of urosternite IV; abdominal process not coplanar with abdomen, with approximately 30° slope ( Fig. 1–6 ); Brazil ( GO , BA , MG , ES , RJ , SP , PR , SC , RS), Bolivia ( SC , TA), Paraguay , Argentina ( MI , BA), Uruguay ........................................... O. flavicauda ( Bates, 1873 ) — Antennae longer, reaching apex of urosternite III; prothorax elongate, length/width 1.45; elytra not dehiscent nor fissate, apex reaching apex of urosternite IV; abdominal process almost coplanar with abdomen, with approximately 10° slope ( Fig. 7–8 ); Brazil (BA, ES).............................................. O. flavirostris (Melzer, 1930) 6(2). Length body/width metasternum in male 5.42–5.85, in female 5.24; pronotum without distinct callosities, with or without median callus, the pronotal surface almost lacking impunctate areas; antennae subcrassate; apex of elytra reach urosternite V; width of one inferior lobe of eyes/interocular distance in male 8.00–9.00; abdominal process with approximately 60–80° of slope in male, approximately 45° in female; lengths mesofemoral clave/peduncle 1.72–1.78; length mesofemur/lateral width of clave 3.24–3.56; lengths metafemur/metatibia 1.04–1.08...................................................... [Group B (i)] 7 — Length body/width metasternum in male 5.42–5.54, in female 5.36–5.43; pronotum with distinct paired lateral callosities or tubercles and median callus, the surface of these partly impunctate; antennae subfiliform; apex of elytra reach urosternite IV; width of one inferior lobe of eyes/interocular distance in male 4.50–6.40; abdominal process with approximately 45° of slope in male, approximately 30° in female; lengths mesofemoral clave/peduncle 1.52-1.67; length mesofemur/lateral width of clave 3.78–3.95; lengths metafemur/metatibia 1.00–1.02.................................................... [Group B (ii)] 10 7(6). Female: larger, 14 mm ; antennomere III 1.3× longer than scape and IV approximately 1/2 length of III....................................................................... 8 — Female: smaller, 11 mm ; antennomere III 1.5× longer than scape and IV 2/3 length of III ( Fig. 14 ); Uruguay .......................................... O. monnei ( Zajciw, 1968 ) 8(7). Both sexes: legs bicolored (reddish and black); sides of prothorax more rounded. Female: pronotum orange, humeri yellow or black, pronotal midline occupied by black fascia; elytra weakly fissate, 3.4x longer than width across humeri, apical yellow fascia elongate, ill-defined and not contrasting in color with rest of elytra; metafemora red and black. In male: antennae reach middle of urosternite I, antennomere III 1.4× longer than scape and equal in length to V and VI; prosternal process 10x narrower than width of coxal cavity; abdomen orange in color, lengths of urosternites III and IV subequal, soleate depression on urosternite V ill-defined, weakly delimited by slightly raised, rounded sides; abdominal process with approximately 60° slope....................................................................... 9 — Both sexes: legs unicolored (black in male, yellowish in female); sides of prothorax less rounded. Female: pronotum and humeri entirely dark red; elytra dehiscent, 3.6× longer than width across humeri, apical yellow fascia short, quadrate and contrasting in color with rest of elytra; metafemora unicolored. In male: antennae reach base of urosternite II, antennomere III 1.2× longer than scape and distinctly longer than all other segments; prosternal process 8.5× narrower than width of coxal cavity; abdomen dark brown in color, urosternite III distinctly longer than IV, soleate depression on urosternite V U-shaped, but hardly depressed, sharply raised sides towards apex of segment; abdominal process with approximately 80° slope ( Fig. 15–18 ); Brazil (MG, ES, RJ, RS), Argentina , Uruguay ......... O. apicalis ( Klug, 1825 ) 9(8). Female: head black; antennae short, approximately 1/2 length of body, antennomeres III–V short and strongly widened; sides of prothorax regularly rounded; pronotum without calli, surface densely and coarsely punctured, midline occupied by broad black fascia; sides of elytra (including humeri) broadly blackish, translucent panels densely punctured, apices of elytra with both lateral and sutural margins dentate; femora entirely blackish ( Fig. 19 ); Brazil ( BA , MG , ES , RJ , SP , PR , SC , RS), Argentina ( MI , CO , ER), Uruguay .................................................................... O. sanguinolentus ( Bates, 1873 ) — Female: head mostly rufous; antennae longer, more than 1/2 length of body; antennomeres III–V longer and hardly widened; sides of prothorax irregularly rounded; pronotum with indistinct calli, surface densely but not coarsely punctured, midline with narrow black fascia; sides of elytra narrowly blackish, humeri entirely yellowish, translucent panels sparsely punctured, apices of elytra with only sutural margin weakly dentate; femora red and black ( Fig. 20–24 ); Brazil (SC)........................................... O. rufifrons ( Fisher, 1937 ) 10(6). Black; elytra yellow at apex; metasternum with dense white pubecence; rostrum shorter, width/ length 2.40 in male, 1.93 in female; width of one inferior lobe of eye/interocular distance 6.40 in male, 1.40 in female; antennae shorter, reaching basal third of urosternite II in male, apical third of I in female; in male antennomere III 1.05x longer than any other segment, in female 1.15× longer; pronotal surface only partly impunctate on callosities, these weaker and not tuberculate; elytra shorter in male, length/width across humeri 3.56; soleate depression on urosternite V with strongly raised sides, almost tuberculate ( Fig. 25, 27-30 ); Argentina (CO, TU), Bolivia (SC, TA)........................... O. quinquecallosus ( Zajciw, 1963 ) — Rufescent; elytra not yellow at apex; metasternum with dense golden pubecence; rostrum longer, width/length 2.08 in male, 2.07 in female; width of one inferior lobe of eye/interocular distance 4.50 in male, 1.25 in female; pronotal surface with many impunctate areas (not only on callosities), largest callosities tuberculate; elytra longer in male, length/width across humeri 3.84; soleate depression on urosternite V with weakly raised sides ( Fig. 26 , 31–34 ); Argentina (SA, TU), Bolivia (SC, TA) O. septemtuberculatus ( Zajciw, 1963 )