Eupogonius nigroapicalis Lingafelter, 2024

Woodley, Steven W. Lingafelter Norman E., 2024, New species, new combinations, synonymies, and nomenclatural discussion for Hispaniolan longhorned beetles (Coleoptera: Disteniidae, Cerambycidae), Insecta Mundi 2024 (69), pp. 1-41 : 37-38

Eupogonius nigroapicalis Lingafelter , new species

( Fig. 29–30 )

Diagnosis. This species is distinctive by its overall ochraceous coloration, elytra with two dark brown crescent shaped spots near the apices that are covered in black setae, and its relatively large size at almost 8 mm long. The pronotum has a distinct, narrow, longitudinal band of ochraceous pubescence extending from the base to the apex and partial bands on the sides of the pronotal disk. The antennae are very long with the apex of the antennomere 4 extending to the apical third of the elytra. Antennomeres 3–4 are nearly as long as antennomeres 5–11. The base of each elytron is swollen near and posterior to the scutellum. No other species of Hispaniolan Desmiphorini has these characters.

Description. Holotype male. 7.8 mm long; 2.5 mm wide at humeri. Color: Most of integument ochraceous reddish-brown with head, pronotum, scape, and femora dark brown. Integument mostly covered with appressed ochraceous pubescence (except for the middle of the elytra which has white pubescence) and suberect, black setae. The apical fourth of the elytra each have 2 crescent-shaped dark brown spots extending from the suture to lateral edge, each bordered anteriorly by white pubescence and covered with suberect, black setae. Antennomeres 3–4 light reddish brown except for darker brown apices; remaining antennomeres dark brown except for diffusely lighter brown at extreme bases. Tarsi mostly light reddish-brown. Tibiae light reddish-brown and mostly covered with long, white setae except at apices which have short, black setae. Femora dark brown except for light brown at extreme base and apices. Venter mostly light reddish brown with darker brown prothorax and lateral thoracic sclerites.

Head. Nearly as broad as pronotum, vertical, flat anteriorly, not protuberant, with elevated, divergent, and widely separated antennal tubercles. Head (including bases of antennal tubercles) densely punctate, especially on frons, vertex, and occiput. Eyes with lower lobe occupying three-fourths of the height of head below the antennal tubercle; with coarse ommatidia. Upper eye lobes connected to lower lobe by 3 ommatidia. Upper eye lobes separated by about the greatest width of scape. Antennae extending beyond elytral apices by almost 5 antennomeres. Antennomeres filiform, unexpanded at apices, and covered with mostly black setae that are long mesally and intermixed with a few long, white setae. Antennomeres with diffuse annulations as described above. Scape extending to basal third of pronotum, slightly more than half the length of antennomere 3 which is longest, followed by antennomere 4 which is 0.75 × its length. Apex of antennomere 4 extends to nearly apical third of elytra. Antennomeres 5–7 each a little more than half the length of antennomere 4, 8–10 successively shorter, 11 slightly longer than 10. Antennomeres 1–4 together about as long as 5–11.

Thorax. Pronotum broader than long with inconspicuous, short, acute lateral tubercle on each side and lacking dorsal tubercles. Densely punctate, but with some punctures hidden under dense, longitudinal bands of ochraceous, appressed pubescence. Prosternal process about half the breadth of procoxa between procoxae, with apex expanded to about two-thirds the width of procoxa at apex, closing procoxal cavities posteriorly. Lateral thoracic sclerites with deep punctures, becoming shallower and sparser on ventral thoracic sclerites. Elytra each with small prominence at base beside and behind scutellum; with dense, irregularly spaced punctures, each bearing a thick, black, suberect seta. Elytral apices subtruncate. Scutellum rounded posteriorly. Femora clavate, short; hind femur extending to third abdominal ventrite. Femora coated with appressed, golden-brown setae becoming denser ventrally and with a few off-white longer, suberect setae scattered over surface. Mesocoxae separated by mesosternal process that is about half the width of mesocoxa.

Abdomen. Covered with dense, appressed, off-white setae; mostly impunctate. First ventrite shorter than metasternum and ventrites 2–3 combined. Apex of ventrite 5 broadly rounded.

Type material. Holotype (male): DOMINICAN REPUBLIC: La Vega Province, ca. 10 km E Constanza , 1295 m, 31 August 1988, beating in pine / guava forest, M. A. Ivie, T. K. Philips, & K. A. Johnson ( WIBF, donated to USNM).

Etymology. The specific epithet is based on the black maculations present on the apex of the elytra.

Remarks. A unique specimen of this species is known. It was collected in the mountainous Cordillera Central by beating vegetation in August. Host plants are unknown.

Figures

Figure 26–30. New Desmiphorini species of Hispaniola. 26) Estola touroulti Lingafelter, new species, holotype. 27) Eupogonius baorucensis Lingafelter, new species, paratype, dorsal. 28) Eupogonius baorucensis Lingafelter, new species, paratype, lateral. 29) Eupogonius nigroapicalis Lingafelter, new species, holotype, dorsal. 30) Eupogonius nigroapicalis Lingafelter, new species, holotype, lateral.