Ectenessa canoi, Pérez-Flores & Santos-Silva, 2022

Pérez-Flores, Oscar & Santos-Silva, Antonio, 2022, New species of Cerambycinae (Coleoptera, Cerambycidae) from Guatemala, Papéis Avulsos de Zoologia 62, pp. 1-7 : 1-3

Ectenessa canoi sp. nov.

( Fig. 1 ) http://zoobank.org/ 3548D23C-6263-4031-A9FA-F3D70DB2B1F2

Description: Holotype male: Integument mostly yellowish orange; head, scape,pedicel and pronotum reddish brown; pronotum with two semi-elliptical brownish areas on posterior half; posterior half of elytra yellowish white; each elytron with two whitish subcircular maculae surrounded by narrow brown band, one on anterior half, another on posterior half.

Head: Frons smooth close to clypeus, coarsely, sparsely punctate on remaining surface; with short, decumbent, sparse setae. Median groove distinct from postclypeus to vertex. Vertex coarsely, abundantly punctate throughout; with short, decumbent, sparse setae, and long, scattered orange setae close to eyes. Antennal tubercles with sculpturing and setae as on frons except nearly smooth apical area. Area behind eyes finely, abundantly punctate, mainly close to upper eye lobe, punctures gradually sparser toward inferior side of lower eye lobe; with short, sparse setae. Genae finely punctate; with short, decumbent, sparse setae. Postclypeus finely, abundantly punctate centrally, punctures sparser laterally; with a few short, erect setae and one very long, erect orange seta on each side; glabrous centrally. Labrum with long orange setae anteriorly; with short, erect setae on posterior area. Distance between upper eye lobes 0.70 times length of scape; in frontal view, distance between lower eye lobes 0.68 times length of scape. Gulamentum finely, sparsely punctate, glabrous between prothorax and eyes, transversely striate, with long, erect, sparse yellowish setae between eyes. Antennae 2.45 times elytral length, reaching elytral apex about apex of antennomere VII; scape coarsely, abundantly punctate dorsally, somewhat rugose-punctate on posterior half; with short, sparse setae, and long, erect, sparse setae ventrally, and a few long, erect setae dorsally. Antennomeres III-V dorsally carinate; antennomeres III-XI with short, yellowish setae, shorter and denser on last antennomeres; pedicel and antennomeres III-VII with long, erect orangish setae on ventral surface, sparser on VIII-X. Antennal formula (ratio) based on length of antennomere III: scape = 0.47; pedicel = 0.15; IV = 0.95; V = 0.97; VI = 0.98; VII = 1.02; VIII = 0.95; IX = 0.87; X = 0.78; XI = 1.04.

Thorax: Prothorax 1.16 times longer than wide; barrel-shaped in dorsal view; sides coarsely, abundantly punctate, except striate anterior region; with very short, erect, sparse setae, and a few long, erect setae laterally. Pronotum with three, slightly elevated gibbosities, one longitudinal on each side, one centrally on basal half; coarsely, abundantly punctate, especially between gibbosities on distal half and laterally, smooth on gibbosities; with scarce short, erect setae. Sides of prothorax with sculpturing as on pronotum, punctures sparser posteriorly; with two small, semicircular gibbosities on anterior half. Prosternum transversely, coarsely striate centrally, except striate-punctate anterocentral region; coarsely, abundantly punctate laterally; with short, decumbent, abundant setae on posterior half, sparser on anterior half; with a few long, erect, yellowish setae. Prosternal process narrowed centrally, abruptly expand- ed posteriorly. Mesoventrite finely punctate, except smooth central area. Apex of mesoventral process 0.82 times width of mesocoxal cavity, deeply truncate-emarginate; with short, sparse setae, slightly denser laterally. Mesanepisternum, metaventrite and metanepisternum coarsely, shallowly, sparsely punctate; with short, sparse setae, denser laterally; with long, erect orangish setae on central area of metaventrite, and few on anterior half of metanepisternum. Scutellum finely punctate; with short, erect yellowish setae. Elytra: Coarsely, deeply, abundantly punctate, punctures sparser on posterior third; with short, erect, sparse setae, and long, erect, scattered orangish setae along suture, and a few long, erect orangish setae laterally; apex obliquely emarginate, with long acute projection at outer angle and short acute projection at sutural angle. Legs: Femora with long, erect, sparse orangish setae denser dorsally and ventrally; profemora fusiform; mesofemora pedunculate-clavate (metafemora are missing in the holotype).

Abdomen: Ventrites finely, sparsely punctate; with long, erect, sparse orangish setae,denser on ventrite 5; apex of ventrite 5 truncate.

Dimensions (mm): Holotype male: Total length, 12.05; prothoracic length, 2.30;anterior prothoracic width, 1.45; posterior prothoracic width, 1.30; maximum prothoracic width, 2.00; humeral width, 2.25; elytral length, 7.95.

Type material: Holotype male labeled: “ GUATEMALA, Petén, Municipio La Libertad, Comunidad Bethel , 8-10/ VI/1995, Col. E. Cano ”. ( UVGC).

Etymology: This species is dedicated to the recently deceased Enio Cano (Universidad del Valle de Guatemala), for his friendship, enthusiasm, and contribution to the knowledge of the diversity and conservation of Passalidae and Scarabaeidae in Guatemala.

Remarks: By the presence of two white elytral maculae on each elytron, Ectenessa canoi sp. nov. ( Fig. 1 ) is most similar to E. ocellata (Gounelle, 1909) , E. quadriguttata (Burmeister, 1865) , and E. spinipennis (Buquet, 1860) (see photographs on Bezark, 2022b). Ectenessa canoi sp. nov. differs from E. ocellata and E. quadriguttata by the two semi-elliptical brownish areas on posterior half of the pronotum (integument unicolorous in E. ocellata , and with two longitudinal black areas centrally in E. quadriguttata ), white semicircular-shaped maculae on the elytra (semi-elliptic in E. ocellata and E. quadriguttata ), and elytral apex obliquely emarginate and with spiniforms projections (without spiniform projections in E. ocellata and E. quadriguttata ). Ectenessa canoi sp. nov. differs from E. spinipennis by the semicircular-shaped maculae on the elytra (semi-elliptic in E. spinipennis , the later one oblique and more elongate) ( Martins, 1998).

Figures

Figure 1. Ectenessacanoi sp.nov., holotype male:(A) Dorsal habitus;(B)Ventral habitus;(C) Lateral habitus;(D) Head,frontal view.