Stenoeme annularis Martins, 1980

Santos-Silva, Antonio, Botero, Juan Pablo, Nascimento, Francisco Eriberto de Lima & Martins, David dos Santos, 2020, New species, new records, and taxonomical notes in Cerambycidae (Coleoptera) from the state of Espírito Santo (Brazil), Papéis Avulsos de Zoologia (Pap. Avulsos Zool., S. Paulo) 60, pp. 1-22 : 11-12

Stenoeme annularis Martins, 1980 ( Figs. 35-37 )

Stenoeme annularis Martins, 1980: 224 ; Monné, 2020a: 610 (cat.).

Redescription: Female: Coloration: Head orangish, darker orange behind eyes; outer side of mandibles orangish on posterior ⅔ except for black margins, black on posterior third; scape orangish with posterior quarter black; pedicel orangish; antennomeres III-X orangish with posterior area dark, dark brown on basal antennomeres, gradually brownish toward X; antennomere XI orangish. Pronotum and sides of prothorax brown; prosternum orangish with sides brownish. Ventral surface of meso- and metathorax dark brown except for orangish metaventral process. Scutellum brown. Elytra mostly orangish (more testaceous depending on light intensity), with basal area brownish. Femora dark reddish brown basally, gradually dark brown toward apex (extreme apex nearly black). Tibiae orangish on basal third, gradually darker toward dark brown apex. Tarsomeres I dark brown, remaining tarsomeres more reddish brown, especially on V.Ventrites most dark brown.

Head: Frons somewhat coarsely, densely, confluently punctate; with short, decumbent, very sparse yellowish setae. Vertex and area behind upper eye lobes with sculpturing as on frons, less so centrally close to pronotum; area between antennal tubercles and upper eye lobes slightly depressed (depression gradually acute toward posterior area); with sparse, decumbent yellowish setae. Area behind lower eye lobes striate-punctate; with sparse, decumbent yellowish setae, with long, erect, sparse setae of same color interspersed. Genae finely punctate close to eye, smooth on apex; with minute, sparse yellowish setae on punctate area, glabrous on smooth area. Postclypeus depressed, somewhat rugose-punctate on wide central area (less so centrally), smooth laterally; with short, decumbent, sparse yellowish setae on sides of wide central area (nearly absent centrally), glabrous laterally; with one long, erect brownish seta on each side of wide central area. Labrum concave; with long, erect yellowish-brown setae laterally, nearly glabrous on remaining surface except for short, sparse yellowish setae on anterior margin. Antennal tubercles moderately elevated, with blunt apex; basal area with sculpturing as on frons, apex smooth. Median groove distinct form clypeus to near prothoracic margin. Gulamentum nearly smooth, glabrous on posterocentral area; obliquely depressed toward anterior margin, opaque, finely rugose-punctate, with both, short and long, sparse yellowish setae between eyes. Eyes with a few minute yellowish setae interspersed among ommatidia. Distance between upper eye lobes 0.36 times length of scape (0.23 times distance between outer margins of eyes); in frontal view, distance between lower eye lobes 0.76 times length of scape (0.49 times distance between outer margins of eyes). Antennae 1.5 times elytral length, reaching elytral apex at apex of antennomere IX; scape cylindrical; with somewhat bristly,sparse yellowish setae; scape, pedicel and antennomeres with long, erect, sparse setae ventrally, yellowish on lighter area of basal antennomeres, brown on dark area, and more brownish from antennomere VI. Antennal formula (ratio) based on length of antennomere III: scape = 0.63; pedicel = 0.09; IV = 1.02;V = 1.02;VI = 0.96;VII = 0.90;VIII = 0.79;IX = 0.69; X = 0.65; XI = 0.61.

Thorax: Prothorax slightly longer than wide. Pronotum densely, finely punctate (punctures somewhat asperate on some areas), except for smooth elongate triangular area on center of posterior third; with yellowish pubescence not obscuring integument (more whitish depending on light intensity), slightly denser and longer laterally. Sides of prothorax finely, densely punctate close to pronotum, gradually finely, transversely striate toward prosternum; with yellowish pubescence not obscuring integument. Prosternum very finely, transversely striate, with fine punctures interspersed, except for smooth anterior area; with short, sparse yellowish pubescence, with long, moderately abundantly erect yellowish setae on sides of anterior third. Sides of meso- and metathorax with somewhat abundant yellowish pubescence laterally (more grayish-white depending on light intensity), nearly glabrous centrally, especially on metaventrite (pubescence sparse between sides and central area of metaventrite); mesoventrite opaque; central area of metaventrite shiny; sides of metaventrite with long, erect yellowish setae interspersed. Scutellum longitudinally sulcate centrally, glabrous. Elytra: Finely, densely punctate; with longitudinal carina from base to near apex on side of dorsal surface (another slightly distinct carina between the former and suture, absent toward apex); with short, yellowish-white pubescence distinctly not obscuring integument, longer, more abundant on epipleural margin and dorsal area close to apex. Legs: Femora with long, sparse yellowish setae, decumbent dorsally, erect ventrally; metafemora ( Fig.37 ) with long, erect differentiated setae dorsally just after middle (entirely dark brown or yellowish basally with apex dark brown). Protibiae with long, erect dark setae dorsally, shorter, denser, more yellowish ventrally. Meso- and metatibiae with somewhat long, erect, abundant setae, mostly yellowish on basal half, mostly dark on posterior half, setae denser on posterior third of dorsal surface ( Fig. 37 ).

Abdomen: Ventrites with yellowish-white pubescence not obscuring integument, with long, erect setae of same color interspersed,except for glabrous apex of ventrites I-IV. Apex of ventrite V rounded.

Dimensions in mm (1 ♀): Total length, 16.75; prothoracic length centrally, 2.00; prothoracic width laterally, 2.15; anterior prothoracic width, 1.55; posterior prothoracic width, 1.70; maximum prothoracic width, 2.00; humeral width, 2.65; elytral length, 12.50.

Material examined: BRAZIL, Bahia: Estrada Rio-Bahia, km 965, Motel da Divisa, 960 m, Encruzilhada, 1 paratype male, 1 paratype female, XI.1974, Seabra & Roppa col. ( MZSP). Espírito Santo (new state record): Aracruz, 19°48′45″S, 40°08′49″W, 30.IX.1987, P.M. Vieira col. ( MZSP, formerly SSA).

Remarks: Stenoeme annularis Martins, 1980 was described based on 3 ♂ and 4 ♀ from Brazil (Bahia). The holotype male, and one male and 3 ♀ paratypes were deposited at MNRJ and were destroyed by fire. According to Martins (1980) (translated): “Near bellarmine, which I know only by the slide of the holotype, taken by J.S. Moure at the Paris museum. The antennae of the holotype [ S. bellarmini ] are entirely dark, and the metafemora do not have long, erect black setae, present and very characteristic in both sexes of S.annularis , which, furthermore, have antennomeres reddish with black apex”. As the female was briefly described in the original description and redescription, we take the opportunity to redescribe it.

Currently, it is known from Brazil (Bahia, Minas Gerais) ( Monné, 2020a).

Figures

Figures 34-37. (34)Trestonia grisea, holotype male,dorsal view.(35-37) Stenoeme annularis, female:(35) dorsal habitus;(36) ventral habitus;(37)metafemur.