Amphicnaeia panamensis Wappes, Santos-Silva and Galileo, 2019

Wappes, James E., Santos-Silva, Antonio & Galileo, Maria Helena M., 2019, Synonymies, a new combination, and four new species in Amphicnaeia Bates (Coleoptera: Cerambycidae: Lamiinae), Insecta Mundi 703 (703), pp. 1-18 : 2-4

Amphicnaeia panamensis Wappes, Santos-Silva and Galileo , new species

( Fig. 1–4 )

Description. Male. Head dark-brown; mouthparts yellowish-brown; scape reddish-brown, irregularly interspersed with brown areas; pedicel reddish-brown; antennomeres III–V reddish-brown in basal 2/3, dark-brown in distal third; antennomeres VI–VII reddish-brown in basal half, dark-brown in distal half; antennomeres VIII–XI reddish-brown in basal third, dark-brown in distal 2/3; prothorax mostly darkbrown, with central area of pronotum lighter, and central area of prosternum and prosternal process reddish-brown; sides of ventral surface of meso- and metathorax dark-brown, slightly reddish-brown centrally; basal third of elytra reddish-brown except wide brown band along suture, and dark-brown band in inclined area (not reaching humerus), remaining surface brown, irregularly interspersed with reddish-brown areas; coxae dark reddish-brown; forelegs mostly reddish-brown with some lighter irregular areas; meso- and metafemora yellowish-brown; basal half of mesotibiae yellowish-brown, and distal half brown; basal 2/3 of metatibiae yellowish-brown and distal third brown; meso- and metatarsi mostly reddish-brown; abdominal ventrite I mostly dark-brown, with distal third dark reddish-brown, except narrow yellowish apex; remaining abdominal ventrites mostly dark reddish-brown, with apex of II–IV yellowish.

Head. Frons finely, moderately sparsely punctate; with abundant yellowish-white pubescence, not obscur- ing integument, in anterior area close to clypeus and sides close to eyes, nearly glabrous on transverse central area, with sparse yellowish-white pubescence toward antennal tubercles. Vertex and area behind upper eye lobes with sculpturing as in frons; with yellowish-white pubescence (yellower depending on light intensity), not obscuring integument, more abundant and longer centrally; with sparse, thick, short, erect setae close to eyes. Area behind lower eye lobes with punctures slightly coarser and denser than in vertex; with abundant pale-yellow pubescence, denser, partially obscuring integument close to eye. Antennal tubercles finely punctate, except smooth distal area; with yellowish-white pubescence, not obscuring integument, more yellowish-brown toward apex. Median groove absent. Genae with abundant yellowish pubescence, partially obscuring integument, except glabrous distal area. Gulamentum with short, bristly yellowish-white pubescence anteriorly, glabrous posteriorly. Distance between upper eye lobes equal to about 2/3 of maximum width of one upper lobe; in frontal view, distance between lower eye lobes equal to almost 8.0 times distance between upper eye lobes. Antennae about 1.8 times elytral length, reaching elytral apex about base of antennomere VIII. Scape asperous, more distinctly so dorsally near apex; with sparse yellowish pubescence; with long, erect, thick dark setae, longer and more abundant ventrally. Pedicel and antennomeres with sparse yellowish pubescence (darker appearing in some areas due to the darker color of integument), with long, erect, thick dark setae, distinctly longer and more abundant ventrally.

Thorax. Prothorax about as long as wide; sides uniformly rounded. Pronotum coarsely, abundantly punctate; with three longitudinal bands, from base to apex, of dense yellowish pubescence, one on each side, another centrally (pubescence more bristle like than in lateral bands); remaining surface with very sparse yellowish setae; with sparse, long, erect, thick dark setae. Sides of prothorax with sculpturing as in pronotum; with yellowish pubescence, distinctly denser on wide band close to prosternum. Prosternum coarsely, densely punctate; with sparse yellowish-white pubescence. Central area of prosternal process distinctly narrowed, about one-sixth width of procoxal cavity. Ventral surface of mesothorax, and sides of metaventrite coarsely, abundantly punctate; mesoventrite and central area of metaventrite with yellowish-white pubescence not obscuring integument; mesanepisternum, mesepimeron, metanepisternum and sides of metaventrite with yellowish-brown pubescence not obscuring integument (slightly denser in metanepisternum). Scutellum with yellowish-white pubescence not obscuring integument. Elytra. Coarsely, abundantly punctate on basal half, gradually sparser in distal half; with two wide longitudinal bands of yellowish-white pubescence dorsally in basal 2/3, fused basally by transverse pubescent band, nearly entirely fused distally (innermost partially interrupted near its base), oblique yellowish-white pubescent macula laterally, about midlength, not reaching epipleural margin, partially fused with outermost longitudinal pubescent band, another longitudinal, wide yellowish-white pubescent band in distal quarter, gradually less distinct toward apex; remaining surface with slightly conspicuous yellowish-white pubescence; with long, erect, thick dark setae throughout; apex nearly rounded. Legs. Femora with yellowish-white pubescence not obscuring integument; with a few long, erect, dark setae dorsally near apex. Tibiae with yellowish-white pubescence not obscuring integument, more brownish, bristly ventrally in posterior half; with long, erect, thick, sparse dark setae. Tarsi with yellowish-white pubescence not obscuring integument dorsally, with long, erect, thick dark setae interspersed; ventral surface of tarsomeres I–III with dense white pubescence.

Abdomen. Pubescence not obscuring integument, as follows: ventrite I with whitish pubescence centrally, yellowish-white laterally, glabrous in narrow distal area; ventrites II–III with whitish pubescence on centrobasal area, yellowish in remaining surface, glabrous in narrow distal area; ventrites IV–V with yellowish pubescence, except narrow distal area of IV. Apex of ventrite V rounded.

Dimensions (mm). Total length 4.80; prothoracic length 0.90; anterior prothoracic width 0.80; posterior prothoracic width 0.75; maximum prothoracic width 0.95; humeral width 1.05; elytral length 2.75.

Type material. Holotype male from PANAMA, Panama: Cerro Jefe (2200′), 25.V–1.VI.1992, J. E. Wappes col. ( FSCA, formerly ACMT).

Remarks. During the initial process of description, an unfortunate accident occurred: the pin on which the specimen was fixed fell to the ground. Unfortunately, the head and prothorax were lost. However, since the specimen was already photographed and has characteristics that allow the species to be diagnosed, the description of the new species is still possible. Although it was not possible to describe areas of the lost parts not in the photographs.

The general appearance of A. panamensis new species somewhat resembles that of A. antennata Galileo and Martins, 2001 ( Fig. 15–17 ), but differs as follows: elytral pubescence forming distinct longitudinal lines in the basal 2/3; elytra without pubescent row along suture ( Fig. 1 ); prothorax longer ( Fig. 1 ); prosternal process ( Fig. 2 ) wider centrally; femora lighter ( Fig. 1–3 ). In A. antennata , the elytral pubescence does not form distinct longitudinal lines in the basal 2/3, elytra with distinct pubescent row along suture, from scutellum to apex ( Fig. 15 ), prothorax is shorter ( Fig. 15 ), prosternal process ( Fig. 16 ) is narrower centrally, and the femora ( Fig. 15–16 ) are darker. The new species also resembles A. quadrifasciata Nascimento & Santos-Silva, 2018 (see photographs of the holotype at Bezark 2019), but differs by the frons not densely pubescent throughout (pubescence nearly obscuring entire surface of frons in A. quadrifasciata ), prothorax longer (shorter in A. quadrifasciata ), scape stouter (slender in A. quadrifasciata ), innermost pubescent line of the elytra not continuous from base to apex (continuous in A. quadrifasciata ), inclined area of the elytra without longitudinal pubescent bands (with two bands in A. quadrifasciata ), and prosternal process distinctly narrowed centrally (not so in A. quadrifasciata ). Amphicnaeia panamensis differs from A. lineata ( Bates, 1866) ( Fig. 27–28 ) by the slender body, prothorax proportionally longer, and different elytral pubescent pattern. It can be separated from A. sexnotata Melzer, 1933 , and A. lepida Melzer, 1933 (see photograph of the holotypes at Bezark 2019), by the prothorax proportionally longer, lighter color of legs and antennae, and different elytral pubescent pattern.

Etymology. The species name refers to Panama, the country where the holotype was collected.

Figures

Figures 1–8. Amphicnaeia spp. 1–4) Amphicnaeia panamensis, holotype male. 1) Dorsal habitus. 2) Ventral habitus. 3) Lateral habitus. 4) Head, frontal view. 5–8) Amphicnaeia bezarki, holotype male. 5) Lateral habitus. 6) Head, frontal view. 7) Dorsal habitus. 8) Ventral habitus.

Figures 15–21. Amphicnaeia spp. 15–17) Amphicnaeia antennata, holotype male. 15) Dorsal habitus. 16) Ventral habitus. 17) Head, side view. 18–21) Amphicnaeia fuscofasciata, holotype male. 18) Lateral habitus. 19) Head, frontal view. 20) Dorsal habitus. 21) Ventral habitus.

Figures 22–28. Amphicnaeia spp. 22–26) Amphicnaeia rileyi. 22) Dorsal habitus, holotype male. 23) Ventral habitus, holotype male. 24) Lateral habitus, holotype male. 25) Head, frontal view, holotype male. 26) Dorsal habitus, paratype female. 27) Amphicnaeia affinis, holotype, dorsal habitus. 28) Amphicnaeia lineata, holotype, dorsal habitus.