Hemilissa bifasciata García, Botero, and Martínez, 2020

García, Kimberly, Botero, Juan Pablo & Martínez, Neis José, 2020, New species and new geographical records in South American Piezocerini (Coleoptera: Cerambycidae) with revised keys to species of Alienosternus and Hemilissa, The Canadian Entomologist 152 (1), pp. 18-35 : 24-26

Hemilissa bifasciata García, Botero, and Martínez , new species

http://zoobank.org/ urn:lsid:zoobank.org:act:254A9C1E-02F0-45A9-9B2F-1E7E7AFB1EAF .

Figures 9–13 .

Type material

Holotype female. COLOMBIA, Bolívar : San Jacinto (Reserva La Flecha, 324 m, 09°51 0 12.4 00 N, 75°10 0 41.4 00 W), 14–16.iv.2018, K. García, “captura manual,” MPUJ _ ENT 0064076 ( MPUJ) . Paratypes. COLOMBIA, Bolívar : San Jacinto (Reserva La Flecha, 324 m, 09°51 0 12.4 00 N, 75°10 0 41.4 00 W), 15.IV.2018, K. García, “perturbación de follaje,” one female ( UARC); one male , San Jacinto (Reserva La Flecha, 324 m, 09°51 0 12.4 00 N, 75°10 0 41.4 00 W), 15.iv.2018, K. García “captura manual,” one male ( MZSP) .

Diagnosis

This species can be distinguished from other species in the genus by lacking distinct pronotal tubercles; central area of the pronotum with contrasting sculpture and longitudinal depression; prothorax parallel-sided; elytra shiny, bicolorous, with longitudinal yellowish-red band on each elytron.

Description

Female. Integument mostly reddish brown; pronotum with dark brown areas; femoral club slightly darker; elytra dark brown with longitudinal yellowish-red band.

Head. Frons coarsely, densely, shallowly punctate; with short, sparse, gold setae. Vertex coarsely, abundantly punctate; glabrous. Antennal tubercles slightly elevated, rounded at apex. Median groove distinct from near midlength of frons to posterior level of antennal tubercles. Gulamentum finely, transversely striate. Mandibles with long, sparse setae on outer surface. Distance between upper eye lobes 3.4 times width of one upper eye lobe. Antennae reaching elytral apex at antennomere XI. Scape coarsely, densely, shallowly punctate throughout; with medium to long, sparse yellow setae. Antennal formula (ratio) based on length of antennomere III (only the holotype measured): scape = 0.67; pedicel = 0.16; IV = 0.97; V = 0.95; VI = 0.81; VII = 0.76; VIII = 0.65; IX = 0.62; X = 0.54; XI = 0.76.

Thorax. Prothorax slightly longitudinal, about 1.2 times longer than largest width; anteriorly slightly constricted ahead margin; posteriorly distinctly constricted. Pronotum coarsely alveolate, except for anterior and posterior margin and longitudinal median sulcus; with long, sparse yellow setae except on median sulcus. Anterior half of prosternum finely transversely striate, with sparse fine punctures and sparse, short setae. Posterior half of prosternum coarsely, densely, confluently punctate; with sparse, short setae. Prosternal process elevated, flat, and expanded laterally at apex, width at narrowest point equal to 1/4 of procoxal cavity width. Mesoventrite depressed around internal margin of coxal cavities; coarsely, densely, shallowly, confluently punctate, smoother laterally, glabrous. Mesoventral process slightly narrower than mesocoxal cavities, emarginate at apex. Metanepisternum with abundant, short setae. Metaventrite with sparse short setae laterally on anterior half, except for glabrous central area; coarsely, shallowly punctate near mesocoxal cavities, with sparse, fine punctures on remaining surface, except for smooth central area. Scutellum truncate at apex. Elytra coarsely, deeply, abundantly punctate on basal half, gradually more finely punctate towards apex; with sparse, long setae throughout; apex with two long spines, innermost slightly shorter than outermost which is at least three times longer than pedicel. Legs with femoral peduncle longitudinally sulcate. Tibiae distinctly carinate.

Abdomen. Ventrites with long and short setae; ventrite I, without central projection, about as long as ventrites II–III together; apex of ventrite V broadly rounded.

Measurements. Holotype, female, total length: 8.2 mm, prothorax length: 1.7 mm, prothorax width at widest point: 1.4 mm, elytral length: 5.7 mm, humeral width: 1.9 mm. Paratypes, male/female, total length: 7.0/ 7.6 mm, prothorax length: 1.5/ 1.5 mm, prothorax width at widest point: 1.2/ 1.3 mm, elytral length: 4.7/ 5.4 mm, humeral width: 1.6/ 1.7 mm.

Variation

The longitudinal yellowish-red bands may vary in width, occupying almost all surface of elytra ( Fig. 12 ) or reduced to narrow band ( Fig. 9 ).

Etymology

Latin, “ fascia ” = band, and “ bi ” = two; “ bifasciata ,” referring to the two longitudinal yellowish-red elytral fascia. This name is an adjective in the nominative singular.

Remarks

Hemilissa bifasciata is similar to H. sulcicollis Bates, 1870 , H. undulaticollis Zajciw, 1960 , and Hemilissa erikae new species by the pronotum without tubercles; the visible, longitudinal, glabrous sulcus; and shiny elytra. It differs from them by the bicolorous elytra, with longitudinal, yellowish-red band; and by the bispinose elytral apex, with both spines long, the external spine at least three times longer than pedicel. In H. sulcicollis , H. undulaticollis , and H. erikae the elytra are unicolorous, and elytral apex has a long outer spine with a small toothed inner projection ( H. sulcicollis , H. undulaticollis ) or both spines equal in size but shorter than 1.5 times the length of the pedicel ( H. erikae ). Hemilissa bifasciata differs from H. undulaticollis by the elytra microsculptured in anterior half (in H. undulaticollis the elytra are entirely not microsculptured). The new species also differs from H. catapotia Martins, 1976 by the pronotum with distinct glabrous, longitudinal sulcus, and bicolorous elytra with the apices bispinose. In H. catapotia , the pronotum lacks a longitudinal sulcus, elytra are unicolorous, and elytral apex is unispinose, with an outer spine and a small projection at sutural angle.

Figures

Figs. 9–17. 9–13, Hemilissa bifasciata new species, female: 9, dorsal view, holotype; 10, ventral view, holotype; 11, lateral view, holotype; 12, dorsal view, paratype; 13, details of head, frontal view, holotype. 14–17, Hemilissa erikae new species, holotype, female: 14, detail of head, frontal view; 15, dorsal view; 16, ventral view; 17, lateral view.