Wappesicus Santos-Silva & Nascimento, 2019

Santos-Silva, Antonio & Nascimento, Francisco E. de L., 2019, On the definition of Tapeinini, and description of a new genus and species (Coleoptera, Cerambycidae), Iheringia, Série Zoologia (e 2019023) 109, pp. 1-8 : 3-7

Wappesicus Santos-Silva & Nascimento , gen. nov.

Etymology. Latin, sufix “- icus ” (belonging to), added to the surname of James E. Wappes. Masculine gender.

Type species. Wappesicus wappesi sp. nov., here designated.

Description, female. Body moderate-sized, flattened. Head not retractile; frons transverse, not forming transverse plate, slightly convex close to clypeus, V-shaped, centrally depressed toward vertex. Gena distinctly shorter than lower eye lobe. Eyes coarsely faceted; distance between upper eye lobes distinctly larger than twice width of one upper eye lobe. Outer side of mandibles with large triangular depression, with its apex surpassing middle of mandible. Last maxillary and labial palpomeres gradually narrowed toward apex. Antennal tubercles not forming plate laterally on scape ball. Antennae filiform, shorter than body; scape longer than antennomere III, slightly piriform, not reaching middle of prothorax; antennomeres III and IV subequal in shape and length. Prothorax transverse, with distinct, wide posterior constriction; sides strongly divergent from anterolateral angles to acute lateral tubercle, then strongly convergent toward base of posterior constriction. Procoxal cavities closed posteriorly. Prosternum slightly transversely sulcate near base of prosternal process. Prosternal process wide, with narrowest area slightly narrow than procoxal cavity, very slightly more elevated than surface of prosternum, strongly widened from middle toward apex, which is laterally lobeshaped, and with posterior margin widely concave; posterior half inverted V-shaped depressed centrally. Mesoventral process wide, moderately narrowed centrally (narrowest area about as wide as procoxal cavity). Mesocoxal cavities closed, but with apex of mesoventrite distinctly not touching apex of metaventrite. Scutellum proportionally small, posteriorly rounded. Elytra slightly longer than 1.5 time humeral width; parallel-sided from humerus to slightly after middle, then gradually, round narrowed toward sutural angle. Femora fusiform. Abdominal ventrite V strongly inverted, V-shaped and centrally depressed, with distal margin of this area narrowly elevated (plate-shaped).

Remarks. Wappesicus gen. nov. is similar to Peritapnia but differs as follows: prosternal and mesoventral processes nearly as wide as the pro- and mesocoxal cavities ( Fig. 21 ); scape more elongate, not distinctly piriform ( Figs 19, 20 ); femora fusiform ( Fig. 21 ). In Peritapnia , the prosternal and mesoventral processes are distinctly narrower than procoxal cavities ( Figs 2, 7 ), scape distinctly piriform ( Figs 4, 8 ), and the femora are pedunculate-clavate ( Figs 2, 6 ). Wappesicus gen. nov. differs from Tapeina by the antennae ( Fig. 20 ) shorter than body [longer ( Fig. 18 ) in female of Tapeina ], scape slightly piriform, not reaching middle of prothorax [cylindrical ( Fig. 18 ), reaching middle of prothorax in Tapeina ], and prothorax ( Fig. 20 ) with acute lateral tubercle [rounded ( Fig. 18 ) in Tapeina ].

Wappesicus wappesi Santos-Silva & Nascimento , sp. nov.

( Figs 19–22 )

Description, female. Head dark mostly reddish brown; narrow area surrounding eyes, distal area of genae, distal area of postclypeus, and median groove on frons dark brown; gulamentum reddish brown, gradually lighter toward posterior area; antennae dark reddish brown; mouthparts mostly light reddish brown, with palpomeres mostly yellowish brown; mandibles dark reddish brown on basal half, black on posterior half. Pronotum mostly dark reddish brown, narrowly dark brown anteriorly and posteriorly. Prosternum and prosternal process light reddish brown, slightly darker in sides of prosternum, with margins darkened. Central area of mesoventrite and mesoventral process light reddish brown, and sides of mesoventrite, mesanepisternum and mesepimeron dark reddish brown (margins of the ventrites narrowly darkened). Metaventrite mostly light reddish brown,

On the definition of Tapeinini , and description of a new genus... S- S& N

gradually darker toward sides. Scutellum reddish brown centrobasally, brown laterally. Elytra mostly dark brown, with part of sutural margin dark reddish brown. Femora mostly dark reddish brown, with darkened irregular areas. Tibiae dark brown basally, gradually dark reddish brown toward apex. Tarsi mostly dark reddish brown, with darkened irregular areas. Abdominal ventrites mostly dark reddish brown, slightly darker laterally, and dark brown on distal area of ventrites I–IV.

Head. Frons ( Fig. 19 ) finely, abundantly punctate, with coarser punctures interspersed, from which emerges erect, long thick dark setae; with bristly, semidecumbent yellowish-brown setae not obscuring integument. Vertex with sculpturing, erect and bristly setae as on frons, area adjacent to prothorax with coarser punctures and erect setae,

On the definition of Tapeinini , and description of a new genus... S- S& N

but bristly, semidecumbent yellowish-brown setae nearly absent. Area behind upper eye lobes tumid close to eye; finely, densely punctate (distinctly less so toward prothoracic margin), with slightly coarser punctures interspersed; with a few moderately long, erect, thick dark setae on tumid area; yellowish-brown pubescence adjacent to tumid area, gradually glabrous toward prothorax. Area behind lower eye lobes tumid close to eye; with sculpturing as in area

On the definition of Tapeinini , and description of a new genus... S- S& N

behind upper eye lobes superiorly, gradually sparser toward ventral area; with bristly yellowish-brown pubescence close to upper eye lobes, gradually glabrous toward ventral side; with long, erect, thick dark setae close to eye, especially in central area. Genae minutely rugose-punctate except smooth distal area; with yellowish-brown pubescence not obscuring integument except glabrous smooth area; with long, erect, sparse, thick dark setae close to eye. Antennal tubercles with sculpturing, erect and bristly setae as on frons anteriorly, gradually sparsely punctate, with distinctly sparser erect and bristly setae toward posterior area. Median groove distinct on frons, slight distinct on vertex. Postclypeus narrow, transversely carina-shaped in wide central area; with long, erect, thick dark setae in wide central area (part of them gradually yellowish-brown toward apex); sides smooth glabrous. Labrum coplanar with anteclypeus in posterior third, inclined in anterior 2/3, more inclined in anterior third; with short, sparse yellowish-brown setae in anterior 2/3, and long, erect dark setae interspersed; with long, erect golden setae in anterior third, and fringe of dense golden setae in anterior margin. Gulamentum smooth, glabrous posteriorly; depressed finely striate-punctate, with short, sparse, erect yellowish-brown setae adjacent to anterior elevation; with sparse, long, erect, thick dark setae in anterior elevation. Distance between upper eye lobes 0.7 times length of scape; in frontal view, distance between lower eye lobes about equal to length of scape. Antennae 1.25 time elytral length, almost reaching elytral apex; with short, decumbent yellowish-brown pubescence not obscuring integument, gradually shorter, yellowish-white toward distal segments. Scape with sparse, long, erect, thick dark setae throughout. Pedicel with sparse, long, erect, thick brown setae throughout, longer ventrally. Antennomeres III–VII with sparse, long, erect brown setae ventrally, and similar setae dorsally and laterally near apex, and sparse, short, erect yellowish-brown setae throughout. Antennomeres VIII–X with sparse, long, erect brown setae near apex, and sparse, short, erect yellowish-brown setae throughout.Antennomere XI with sparse, short, erect yellowish-brown setae throughout. Antennal formula (ratio) based on length of antennomere III: scape = 1.40; pedicel = 0.47; IV = 1.03; V = 0.97; VI = 0.94; VII = 0.94; VIII = 0.90; IX = 0.90; X = 0.90; XI = 1.09.

Thorax. Pronotum moderately tumid in anterior 2/3 (except narrow area close to anterior margin), with one wide, subcircular, slightly elevated gibbosity each side, and one elongate gibbosity centrally, nearly fused with lateral ones; minutely, abundantly punctate, with coarser punctures interspersed (absent in lateral gibbosities), except smooth central gibbosity; with yellowish-brown pubescence not obscuring integument, except glabrous central gibbosity; with long, erect, thick, dark setae emerging from part of coarser punctures ( Fig. 20 ). Sides of prothorax with yellowish-brown pubescence not obscuring integument, with sparse, long, erect dark setae (shorter than in pronotum). Prosternum minutely, sparsely punctate centrally, slightly striate-punctate laterally; with sparse, short, decumbent yellowish pubescence, slightly more abundant laterally, with long, erect, dark setae interspersed. Prosternal process with yellowish pubescence as on central area of prosternum, with long, erect, thick dark setae basally and close to lateral margins, not reaching distal area. Ventral surface of mesothorax with yellowish pubescence not obscuring integument, with sparse, long, erect, thick dark setae in sides of mesoventrite and lateral margins of mesoventral process. Ventral surface of metathorax with yellowish pubescence not obscuring integument, sparser toward central area of metaventrite; with sparse, long, erect, thick dark setae in sides and posterocentral area of metaventrite, and sparse, long, erect yellowish setae laterally ( Fig. 21 ). Scutellum with sparse yellowish-brown setae, forming fringe with denser setae along margins (longer toward centrodistal apex). Elytra coarsely, abundantly punctate throughout; with short, decumbent yellowish-brown pubescence not obscuring integument, with abundant, long, erect, thick dark setae throughout ( Fig. 22 ); erect setae not emerging from the punctures. Legs: femora and tibiae with abundant yellowish pubescence not obscuring integument, with long, erect, thick, dark setae interspersed.

Abdomen. Ventrites minutely, abundantly punctate, with coarser punctures interspersed; with yellowish pubescence not obscuring integument; with long, erect, thick, dark setae emerging from coarser punctures. Ventrite V triangularly depressed posteriorly.

Dimensions (mm). Total length, 8.50; prothoracic length, 1.60; anterior prothoracic width in anterior constriction, 1.75; anterior prothoracic width before anterior constriction, 2.10; posterior prothoracic width, 2.05; maximum prothoracic width, 2.85; humeral width, 3.60; elytral length, 6.00.

Type material. Holotype female from BOLIVIA, Santa Cruz: 20 km N Camiri Rd to Eyti (6.8 km E Hwy 9; 1250 m; 19°52’S / 63°29’W), 8–9.XII.2015, Wappes, Kuckartz and Skillman col. ( FSCA, formerly ACMT).

Etymology. The new species is dedicated to our friend James E. Wappes (ACMT).

Figures

Figs 17–22. Tapeina rudifrons Marinoni, 1972: 17, paratype female, dorsal habitus; 18, female from Bolivia, dorsal habitus. Wappesicus wappesi gen. nov., sp. nov, holotype female: 19, head, frontal view; 20, dorsal habitus; 21, ventral habitus; 22, lateral habitus. Scale bar = 2.0 mm.

Figs 1–8. Species of Peritapnia. Peritapnia nudicornis (Bates, 1885), female: 1, dorsal habitus; 2, ventral habitus; 3, lateral habitus; 4, head, frontal view. Peritapnia fabra Horn, 1894, male: 5, head, frontal view; 6, dorsal habitus; 7, ventral habitus; 8, lateral habitus. Scale bar = 2.0 mm.