Neocherentes dilloniorum Tippmann, 1960: 156

Nearns, Eugenio H. & Monné, Miguel A., 2019, Two new species of South America Neocherentes Tippmann, 1960 (Coleoptera: Cerambycidae: Lamiinae: Onciderini), Insecta Mundi 2019 (699), pp. 1-10 : 2-4

Neocherentes dilloniorum Tippmann, 1960: 156

( Fig. 1 a−d, 4 a, d)

Redescription. Male. Length 11.5–9.0 mm (measured from vertex to elytral apices), width 4.4–4.0 mm (measured across humeri). Habitus as in Fig. 1a . General form elongate-oblong, moderately sized. Integument dark-brown to almost black, with white, gray, ochraceous, testaceous, and dark-brown pubescence; elytra with distinct pattern formed by curved and sinuate stripes of contrasting colors, forming almost an “X” shape extending from humeri to apices; mesosternum and abdominal sternites with similar stripes and colors.

Head. Frons subquadrate, about 4 times width of lower eye lobes. Eyes with lower lobes moderately sized, narrow, elongate; narrowest area connecting upper and lower eye lobes about 2 ommatidia wide. Genae elongate, about 1/2 as tall as lower eye lobes. Antennae distinctly longer than body, surpassing elytral apices by 5 antennomeres; antennal tubercles prominent, widely separated; tubercles armed at apex with short, blunt horn; scape clavate; antennomere III slightly sinuate. Antennal formula based on antennomere III: scape = 0.63; II = 0.18; IV = 0.87; V = 0.62; VI = 0.52; VII = 0.44; VIII = 0.37; IX = 0.36; X = 0.37; XI = 0.38.

Thorax. Pronotum roughly cylindrical, transverse, about 1.25 times as wide as long; disk densely pubescent, with two large, subround tumescences, one on each side of midline, each tumescence depressed obliquely by shallow furrow; each side of disk with short, glabrous line extending obliquely from base to about basal 1/3. Mesosternal process about 2/3 as wide as mesocoxal cavity, medially flat, emarginate apically. Scutellum transverse, apex rounded. Elytra. Slightly more than 2 times as long as width at humeri, about 3.7 times as long as pronotal length, about 1.5 times broader basally than pronotum at its widest (at base); lateral margins slightly attenuate, gradually rounded to apices at apical 1/3, apices jointly rounded; basal 1/2 with moderately dense, moderately deep punctation; humeri prominent, anterior margin arcuate. Legs. Short; femora robust; metafemora clavate apically; tibiae slightly expanded apically; metafemora about 1/3 as long as elytra; tarsomere V about as long as I–IV combined. Procoxae large, globose; apex of prosternal process subtriangular.

Abdomen. Fifth abdominal ventrite about 1.25 times longer than IV.

Female. Length 13.0−9.0 mm (measured from vertex to elytral apices), width 5.3– 3.7 mm (measured across humeri). Similar to male except antennae slightly longer than body; antennomeres X and XI decreasing in length compared to IX; basal 1/3 of profemora not transversely rugose; ventrite V with a median triangular impression.

Material examined. Holotype, ♂, PERU, Cusco, Cosñipata, 1700 m, XII 1951 F. Woytkowski // Neocherentes dilloniorum F. Tippmann , Wien ♂ // Typus // BLNO000671 ( NMNH). Four ♀♀, BOLIVIA, Cochabamba , Museum Frey Tutzing ( NHMB); 1 ♀, BOLIVIA, Sur - Yungas, Chulumani, I-48, Bridarolli // Coleção J.M. Bosq ( MNRJ); 1 ♂, BOLIVIA, Sur - Yungas, Chulumani, I-48, Williner // Coleção J.M. Bosq ( MNRJ); 1 ♀, PERU, S.A., 1940 10.28, F. Woytkowski, No. 4110 // Dept. Junin, Prov. Tarma, Loc. Vitoc, 1400 m.a.s.l. ( MZSP).

Diagnosis and remarks. Neocherentes dilloniorum can be separated from its congeners by the following combination of characters: apical 1/3 of elytra with punctation, mesosternal process medially flat, and mesosternum and abdominal sternites with distinct striped pattern similar to dorsal surface ( Fig. 4a, d ). This species is known from a total of eight specimens (2 males, 6 females). All known specimens of this species were collected in Peru and Bolivia ( Fig. 5 ) at relatively high elevation (1,400 −2,558 m). Monné (2005) was the first to report this species from Bolivia, followed by Wappes et al. (2006). Lingafelter et al. (2014) provided color photographs of the holotype specimen.

Figures

Figure 1. Neocherentes dilloniorum Tippmann, 1960, holotype male. a) Dorsal habitus. b) Lateral habitus. c) Close-up of head. d) Close-up of abdominal ventrites.

Figure 4. Three species of Neocherentes Tippmann, 1960, holotype specimens. a) N. dilloniorum, lateral view. b) N. adrianoi, lateral view. c) N. pergeri, lateral view. d) N. dilloniorum, close-up of abdominal ventrites. e) N. adrianoi, close-up of abdominal ventrites. f) N. pergeri, close-up of abdominal ventrites.

Figure 5. Partial map of South America showing the approximate distribution of three species of Neocherentes Tippmann, 1960. Neocherentes dilloniorum (red squares), Neocherentes adrianoi sp. nov. (magenta diamonds), Neocherentes pergeri sp. nov. (blue circles).