Dorcasta dasycera ( Erichson, 1848 )

Bezark, Larry G., Santos-Silva, Antonio & Nascimento, Francisco E. De L., 2018, A synopsis of the genus Dorcasta Pascoe, 1858 (Coleoptera, Cerambycidae, Lamiinae, Apomecynini), Zootaxa 4399 (1), pp. 49-68 : 51-53

Dorcasta dasycera ( Erichson, 1848)

( Figs 1–4 )

Hippopsis dasycera Erichson, 1848: 574 .

Dorcasta oryx Pascoe, 1858: 264 ; Breuning, 1971: 247 (syn.).

Redescription. Integument mostly black; mouthparts dark reddish-brown; tarsi from entirely black to dark reddish-brown except distal area of tarsomere V and claws (always black).

Head. Frons moderately finely, abundantly punctate ; pubescence nearly obscuring integument, yellow on wide band close to eyes (from antennal tubercles to apex of gena), pale yellow, less dense than yellow pubescence on remaining surface, without short, thick, slender scale-like setae; with sparse long, dark erect, setae. Antennal tubercles with yellowish-white pubescence nearly obscuring integument. Dorsal surface with narrow yellow pubescent band on each side, from base of antennal tubercle to prothoracic margin, oblique from antennal tubercle to about middle of upper eye lobe, then vertical toward prothorax; area along central groove with narrow white pubescent band ; remaining surface with brownish pubescence not obscuring integument; with sparse long, dark erect, setae. Area behind lower eye lobes with oblique, moderately narrow yellow pubescent band, from eye to prothorax, rarely connected to pubescent band of dorsal surface close to eye and usually connected with it close to prothorax through whitish pubescent band; remaining surface with brownish pubescence not obscuring integument (sometimes distinctly yellowish and nearly obscuring integument); with sparse long, dark erect, setae. Genae with sculpturing slightly coarser than on frons, moderately abundant; with yellowish-white pubescence exposing integument (sometimes nearly glabrous) except yellow pubescent band starting on frons; with sparse long, dark erect, setae. Distance between upper eye lobes 0.32 times length of scape; in frontal view, distance between lower eye lobes 0.48 times length of scape. Antennae in female 1.44 times elytral length, reaching elytral apex at middle of antennomere XI; in male 1.54 times elytral length, reaching elytral apex at apex of antennomere X. Scape with sparse long (from shorter to slightly longer than diameter of scape), dark erect, setae ventrally. Pedicel and antennomeres III– X with long (from about as long as diameter of antennal segment to almost 3 times) , dark erect, setae ventrally (gradually shorter and sparser toward X), moderately abundant on basal antennomeres, but not dense. Antennal formula (ratio) based on length of antennomere III (male/female; only one couple measured): scape = 1.31/1.45; pedicel = 0.31/0.32; IV = 1.14/1.19; V = 0.93/1.00; VI = 0.86/0.90; VII = 0.72/0.84; VIII = 0.62/ 0.68; IX = 0.58/0.61; X = 0.48/0.51; XI = 0.69/0.64.

Thorax. Prothorax cylindrical, slightly or not narrowed basally, slightly or not widened centrally. Pronotum coarsely, abundantly punctate; with wide, longitudinal yellow pubescent band from base to apex on each side, and slender, longitudinal yellowish white pubescent band centrally (sometimes yellower, especially basally); remaining surface with yellowish-brown pubescence not obscuring integument; with sparse long, dark erect, setae throughout. Sides of prothorax with wide, longitudinal yellow pubescent band close to ventral side, with white pubescence on remaining surface, not obscuring integument, especially close to yellow band of pronotum; with sparse long, dark erect, setae. Ventral surface of thorax with whitish pubescence partially obscuring integument, [except lateral wide?] (especially on mesanepisternum and mesepimeron), longitudinal yellow pubescent band from mesanepisternum to apex of metaventrite (sometimes sparse on metaventrite; sometimes covering base of metanepisternum); with sparse moderately short, dark erect, setae. Metaventrite coarsely, abundantly punctate laterally. Scutellum with yellow or yellowish-white pubescence obscuring integument. Elytra. Coarsely, moderately abundantly punctate, finer, sparser distally; apex with long, thick spine at outer angle (from slightly curved outward to slightly curved inward), concave toward short sutural spine (sometimes gradually curved toward sutural angle, which can be slightly projected or completely unarmed); with moderately abundant, long, dark erect, setae throughout; pubescence as follows: 3 longitudinal yellow pubescent bands ( the 3 at least partially fused at apex), 2 dorsally (innermost starting at about apex of basal fifth; outermost from base to apex; both distinctly separated until near apex), another laterally, from near humerus to apex ; two longitudinal white pubescent bands from base to apex, one on lateral curvature, another close to outer margin; narrow, slightly distinct sutural pubescent band, usually yellower basally, white on remaining surface; with sparse whitish pubescence close to yellow bands; remaining surface with yellowish-brown pubescence not obscuring integument. Legs. Femora fusiform, not notably widened in either sex ( Figs 2, 4 ); with yellow pubescence dorsally, yellowish-white toward ventral side, not obscuring integument, with sparse long, dark erect, setae interspersed.

Abdomen. Ventrites moderately coarsely, sparsely punctate (slightly denser laterally); with white pubescence nearly obscuring integument, except longitudinal yellow pubescent band laterally from base of ventrite I to apex of IV, from slightly to distinctly connected along apex of each ventrite (especially II–IV); ventrite V in female distally depressed (not so in male).

Dimensions (mm), male/female. Total length, 6.80–7.50/7.20–8.60; prothoracic length, 1.20–1.45/1.30–1.60; basal prothoracic width, 0.80–1.00/0.95–1.10; distal prothoracic width, 0.85–1.00/1.00–1.10; greatest prothoracic width, 0.90–1.05/1.00–1.20; humeral width, 1.05–1.15/1.10–1.45; elytral length, 4.75–5.10/5.10–6.00.

Material examined. MEXICO, Jalisco, 6 km N Chamela, 1 female, 15-17.VII.2002, Cope collection ( CAS) ; 14 km W Magdalena, 1380m 1 male, 11-12.VII.1979. E. L. & K. S. Sleeper, cols ( CAS) , PANAMA , Los Santos: 2 km E Los Ascientos (165 m), 1 female, 27.VI.1996, Gillogly & Schaffner col. ( MZSP) . Panama: 6 mi N Panama City, 4 males, 27.VI.1974, C.W. & L.B. O’Brien & G.B. Marshall col. ( LGBC) ; Palo Seco hospital (Rubbish road, 50 m, 2 mi S Bridge of the Americas, 08°54’42.6”N / 79°33’56.6”W), 1 female, 25.I.2014, Bezark col. (LGBC); Las Cumbres, 3 females, 27.VI.1974, H. Wolda col. (LGBC); 30 km E Cañita 1 male, 29.VII.1990, F. T. Hovore col. (CAS); 13 km N El Llano, 1 male, 17-29.VI.1996, Jim Cope col ( CAS) ; Cerro Jefe, 30 mi WNW Panama City, 1 male, 28.VII.1976, H . Wolda col (CAS); 12 mi SW Chepo, 1 female, 4.VII.1974, O’Brien & Marshall col. (CAS); Cocle: 16 mi SW El Valle, 7 males, 3 females, 26.VI.1974, C .W. & L.B. O’Brien & G.B. Marshall col. (LGBC); 14 mi SW El Valle, 5 males, 26.VI.1974, C . W. & L.B. O’Brien & G.B. Marshall col. ( LGBC); Colon, Madden Forest , Colon Pipeline Road, 1 male, 1 female, 20.V.1990, F . T. Hovore col. (CAS). VENEZUELA, Aragua: Maracay (Parque A. Codazzi), 1 specimen , unknown sex, IX.1958, Bordon col. (MZSP); La Victoria, 1 specimen, 3 specimens (unknown sex), 7.X.1958, Bordon col. (MZSP); La Victoria, 1 male, 1 female, 7.X.1958, Bordon col. (MZSP); 1 specimen (unknown sex), 26.VIII.1960, Bordon col. (MZSP); 1 specimen (unknown sex), 31.VIII.1960, Bordon col. (MZSP). Miranda: Curupao (Guarenas, 450 m), 2 specimens (unknown sex), 10.VII.1960, Bordon col. ( MZSP) . Vargas: Macuto (Cerro Grande), 1 specimen (unknown sex), 21.VIII.1960, Bordon col. ( MZSP) . Lara: Barquisimeto, 1 male, V.1934, Maldonado col. ( MZSP) ; COLOMBIA, Departamento del Cesar: 3 km N Costilla , Finca La Luz, 1 male, VII.1970, I. Rausch col (EMEC).

Remarks. Dorcasta dasycera differs from D. crassicornis Pascoe, 1858 ( Fig. 35 ) by the erect setae on the antennae being distinctly sparser, and from D. parkeri sp. nov. by the femora being similar in males and females ( Figs 2, 4 ) (notably widened in males of D. parkeri ).

Figures

FIGURES 1–7. 1–5, Dorcasta dasycera: 1, dorsal habitus, female; 2, Ventral habitus, female; 3, head, frontal VieW, female; 4, meso- and metafemora, male; 5, lateral habitus, female. 6–7, Dorcasta borealis: 6, meso- and metafemora, male; 7, meso- and metafemora, female.

FIGURES 33–38. 33, Dorcasta singularis, holotype male, dorsal habitus. 34, D. implicata, unknoWn seX, dorsal habitus. 35– 37, D. crassicornis, holotype: 35, dorsal habitus; 36, head, frontal VieW; 37, labels. 38, D. quadrispinosa, female, dorsal habitus.