Elytrimitatrix (Grossifemora) dilatata Heffern, Botero and Santos-Silva, 2023

Heffern, Daniel, Botero, Juan Pablo & Santos-Silva, Antonio, 2023, New species and taxonomical and geographical notes on Cerambycidae and Disteniidae (Coleoptera: Chrysomeloidea), Insecta Mundi 2023 (966), pp. 1-17 : 12-14

Elytrimitatrix (Grossifemora) dilatata Heffern, Botero and Santos-Silva , new species

( Fig. 23–29 )

Description. Holotype male. Head capsule mostly black; apical region of antennal tubercles brown; posterocentral region of gulamentum yellowish-brown. Posterior area of anteclypeus dark brown, anterior area reddish brown. Labrum reddish brown. Basal 2/3 of mandibles mostly reddish brown and posterior third blackish. Mentum dark brown posteriorly, light reddish brown anteriorly; ligula pale yellowish-brown, except reddish brown basal area; maxillary and labial palpomeres I reddish brown; maxillary and labial palpomeres II, maxillary palpomere IV, and labial palpomere III dark brown, except reddish brown apex. Scape and pedicel reddish brown, apical area of scape slightly darker; antennomeres III–X reddish brown, except dark brown apex, dark area gradually longer toward X; antennomere XI dark brown centrally, reddish brown on remaining surface. Pronotum and sides of prothorax blackish on wide central area, dark reddish brown anteriorly and posteriorly. Prosternum blackish about posterior half, reddish brown on remaining surface; anterior 3/4 of prosternal process dark brown laterally, dark reddish brown centrally, and posterior quarter orangish brown. Ventral surface of meso- and metathorax almost black, except mesoventral process dark reddish brown basally, gradually lighter toward apex. Elytra blackish on circum-scutellar region punctures on anterior 3/4, dark brown on narrow longitudinal bands including part of rows of punctures on anterior 3/4, dark brown close to epipleural margin on anterior quarter, reddish brown on remaining anterior quarter, with oblique dark brown band on beginning of posterior third, reaching epipleural margin, not reaching suture, orangish brown on remaining surface. Trochanters, base of femora, and wide central area of tibiae orangish brown; remaining surface of femora and tibiae dark brown; tarsi mostly dark brown. Ventrites mostly dark reddish brown.

Head. Frons smooth, glabrous centrally, finely, somewhat abundantly punctate, with decumbent yellowishwhite pubescence not obscuring integument laterally. Antennal tubercles sparsely, finely punctate, except smooth apex; with pale-yellow pubescence not obscuring integument, slightly more abundant posteriorly, except glabrous apex. Vertex sparsely, finely punctate, except smooth area close to median groove; with abundant, decumbent yellowish-white pubescence not obscuring integument, except glabrous area close to median groove, and sparse, long, erect setae of same color interspersed. Area behind upper eye lobes abundantly, finely punctate close to eye, with sparse, fine punctures close to prothorax toward vertex, smooth on remaining surface close to vertex, abundantly, coarsely punctate on remaining surface toward lower eye lobe; with somewhat abundant, decumbent yellowish-white pubescence close to eye, and a few long, erect setae of same color interspersed, glabrous on remaining surface. Area behind lower eye lobes abundantly, coarsely punctate close to upper eye lobe, sparsely, finely punctate toward ventral surface; with short, bristly yellowish-white setae and a few long, erect setae of same color close to eye, glabrous on remaining surface. Genae sparsely, finely punctate close to eye, finely striatepunctate on remaining surface, except smooth apex; with yellowish-white pubescence not obscuring integument, except glabrous smooth area. Gulamentum with a few fine punctures, glabrous on posterior half; sparsely, finely punctate, with short, decumbent yellowish-white setae and a few long, erect setae of same color interspersed between eyes; intermaxillary process slightly depressed, somewhat coarsely, rugose-punctate, with yellowishwhite pubescence not obscuring integument, and a few long, erect setae of same color interspersed. Wide central area of postclypeus sparsely, finely punctate, with abundant, short, bristly yellowish-white setae not obscuring integument, and long, erect setae of same color interspersed; sides of postclypeus smooth, glabrous. Labrum sparsely, finely punctate; with somewhat sparse, erect, both short and long yellowish-white setae on wide central area of posterior 3/4, and dense yellowish-brown pubescence on remaining surface. Maxillary palpomere IV subcampaniform; labial palpomere III slightly widened from basal third, truncate apically. Distance between upper eye lobes 0.27 times distance between outer margins of eyes; in ventral view, distance between lower eye lobes 0.63 times distance between outer margins of eyes. Antennae 1.9 times elytral length, reaching elytral apex at posterior quarter of antennomere VIII. Scape arched basally; abundantly, finely punctate; with abundant yellowish pubescence not obscuring integument, and long, decumbent setae of same color apically interspersed dorsally and laterally, and somewhat abundant, long, decumbent yellowish setae ventrally, except glabrous basal area, and a few long, erect yellowish setae interspersed. Pedicel with abundant, long, yellowish setae directed backward, not obscuring integument. Antennomeres III–XI with abundant yellowish pubescence partially obscuring integument dorsally and laterally on light area, slightly sparser yellowish-brown on dark area, except apex of III–IX with both short and long, yellowish setae; ventral surface of III–XI with very long brownish setae. Antennal formula based on length of antennomere III: scape = 0.98; pedicel = 0.09; IV = 0.96; V = 0.94; VI = 0.92; VII = 0.90; VIII = 0.88; IX = 0.86; X = 0.77; XI = 0.75.

Thorax. Prothorax, including lateral tubercles, wider than long; lateral tubercles large, conical, located medially, with acute apex directed upward; anterior constriction well-marked. Pronotum with one large, somewhat elevated gibbosity on each side, between anterior constriction and posterior fifth, and longitudinal gibbosity centrally, between lateral gibbosities, more distinct from about middle to posterior fifth; posterior sixth transversely tumid before posterior sulcus; anterior fifth somewhat abundantly and coarsely punctate, posterior sixth sparsely, finely punctate, area between gibbosities sparsely, finely punctate anteriorly, punctures slightly more abundant, coarser posteriorly, sides abundantly, coarsely, shallowly punctate, smooth on gibbosities; with somewhat abundant, both short and long, decumbent yellowish-white setae not obscuring integument, denser laterally, except glabrous gibbosities. Sides of prothorax sparsely, finely punctate on area close to prothorax, somewhat striate-punctate posteriorly, smooth close to prosternum; with somewhat abundant, both short and long, decumbent yellowish-white setae not obscuring integument close to pronotum, except glabrous ventral surface of lateral tubercle, glabrous close to prosternum. Posterior 2/3 of prosternum mostly smooth, with a few short, decumbent yellowish-white setae laterally, with narrow yellowish-white pubescent band close to procoxal cavities, glabrous on remaining surface; anterior third slightly rugose-punctate, with somewhat sparse, long, erect yellowish-white setae. Prosternal process with abundant, decumbent yellowish-white setae partially obscuring integument; narrowest area 0.12 times procoxal width. Mesoventrite with abundant, decumbent yellowish-white setae not obscuring integument, and a few long, erect setae of same color interspersed centrally, almost glabrous laterally; mesanepisternum, mesepimeron, and mesoventral process with pubescence as on central area of mesoventrite; apex of mesoventral process strongly emarginate centrally; apex of mesoventral process 0.64 times mesocoxal width. Metanepisternum with abundant, decumbent yellowish-white setae not obscuring integument. Metaventrite densely, somewhat coarsely punctate laterally, somewhat transversely striate anterocentrally, slightly sparsely, finely punctate on remaining central area; with abundant, decumbent yellowish-white setae not obscuring integument, setae denser laterally. Scutellum with abundant yellowish pubescence not obscuring integument, except glabrous longitudinal area centrally. Elytra. Somewhat abundant, coarsely punctate, punctures gradually sparser toward apex, and forming a row dorsolaterally, from base to posterior third; with abundant, decumbent yellowish-white setae not obscuring integument, and long, subdecumbent setae of same color interspersed; apex narrowly individually rounded. Legs. Femora with abundant, decumbent yellowish-white setae not obscuring integument, and long, erect setae of same color interspersed. Tibiae with moderately sparse, decumbent yellowish-white setae, and long, erect setae of same color interspersed, except ventral apical area with denser, bristly yellowish-brown setae. Metatarsomere I as long as II–III together.

Abdomen. Ventrites with abundant, decumbent yellowish setae not obscuring integument, setae denser laterally, except glabrous apex of ventrites 1–4, and long, erect setae of same color interspersed; apex of ventrite 5 concave.

Dimensions (mm). Total length, 15.3; prothoracic length, 2.1; anterior prothoracic width, 1.9; posterior prothoracic width, 2.0; maximum prothoracic width, 3.0; humeral width, 3.4; elytral length, 10.8.

Type material. Holotype male from MEXICO, OAXACA: El Vidrio , 1925 m, 16°13′02″N 97°08′52″W, 15.VI.2016, Cunningham and Nogueira leg. ( CNIN).

Etymology. Latin, “dilatatus” (dilated); allusive to the width of the upper eye lobes.

Remarks. Elytrimitatrix (Grossifemora) dilatata new species is similar to E. (G.) irregularis (Linsley, 1935) ( Fig. 30–33 ) but differs as follows: elytra with long and decumbent setae ( Fig. 27 ); epipleural margin without long and erect setae ( Fig. 29 ); elytral punctures finer and more abundant ( Fig. 23, 27 ); and ventrites with abundant pubescence ( Fig. 24, 28–29 ). In E. (G.) irregularis , the elytra have long and erect setae ( Fig. 30 ), epipleural margin with long and erect setae ( Fig. 33 ), elytral punctures are coarser and sparser ( Fig. 30–31 ), and ventrites without abundant pubescence ( Fig. 32 ). It is also similar to E. (G.) lineatopora (Bates, 1880) (see photographs on Bezark 2022a), but differs especially by the upper eye lobes wider and not narrowed on inner margin (slender and distinctly narrowed on inner margin in E. (G.) lineatopora ). Elytrimitatrix (Grossifemora) dilatata new species differs from E. (G.) curoei Santos-Silva and Le Tirant, 2016 by the profemora without spiniform projections ventrally (present in E. (G.) curoei ), apex of mesoventral process not rounded and not projecting to the sides (rounded and projected to the sides in E. (G.) curoei ), and elytra with long and decumbent setae dorsally (absent in E. (G.) curoei ).

Novantinoe Santos-Silva and Hovore, 2007

Figures

Figures 23–33. Elytrimitatrix spp. 23–29) Elytrimitatrix (Grossifemora) dilatata, holotype male: 23) Dorsal habitus; 24) Ventral habitus; 25) Lateral habitus; 26) Head frontal view; 27) Elytral sculpturing on middle; 28) Pubescence of ventrites; 29) Elytral margin. 30–33) Elytrimitatrix (Grossifemora) irregularis (Linsley, 1935): 30) Elytral sculpturing on middle, holotype male; 31) Holotype male, dorsal habitus; 32) Male, pubescence of ventrites; 33) Male, elytral margin.