Octotapnia persona, Dalens, 2016

Dalens, Pierre-Henri, 2016, A new species of Octotapnia Galileo and Martins, 1992 from French Guiana (Coleoptera, Cerambycidae, Lamiinae), Insecta Mundi 2016 (481), pp. 1-4 : 1-2

Octotapnia persona sp. nov.

( Fig. 1–2 )

Type material. Holotype: female from FRENCH GUIANA, Montagne des Chevaux (N 4°44’31.54" W 52°25’53.02"), Roura, 5-VII-2014, SEAG leg. ( MNHN) . Paratypes (2): Male, Piste Tibourou pk 7 (Régina), 15-VII-2006, Malaise trap, Jean-Louis Giuglaris leg. ( JLGC), female, Montagne des Chevaux (Roura), 19- VII-2014, SEAG leg. ( PHDC)

Diagnosis. The species is similar to Octotapnia ceiaca but the new species has six-segmented antennae and the elytral pattern does not include chocolate brown patches; it differs from O. mucunaca Galileo and Martins, 1998 , also by its six-segmented antennae, by its thoracic sides which are light brown, and the elytral pattern: dark brown area surrounding scutellum, round patches on sides of elytral disc, whereas O. mucunaca has dark brown patches only at humeri and elytral apex.

Description. Female ( Fig. 1–3 ). Integument dark brown with light brown squamous pilosity, except on several parts, with dark brown pilosity: head, part of antennal segments III, IV and V; pronotum disc and basal thoracic constriction; basal third of elytra (excluding humeri), two round patches laterally on basal half of elytral disc, and irregular transversal band on apical third; two rings on meso- and metafemora.

Head. Frons quadrangular, transverse, slightly convex, with deep punctures and short brown sparse pilosity. Upper interocular space wide as 2.4 times upper ocular lobe width. Antennal tubercles moderately projected; antennae with six segments, barely reaching elytral apical third. Scape pyriform, slightly clavate in basal half and dilated in apical half, antennal formula based on scape: pedicel=0.3; III=1.1; IV=0.9; V=0.3; VI=0.4. Surface with squamous pilosity, light brown on scape, pedicel, basal quarter of segment III, basal two thirds of segment IV, basal third of segment V and entire length of segment VI; rest of surface with dark brown squamous pilosity.

Thorax. Prothorax cylindrical, transverse, 1.6x wider than long; sides with tubercles at anterior half laterally, constriction more pronounced at base with basal margin hemmed; pronotum with deeply punctate integument, covered with moderately dense dark brown pilosity, sagittal ridge in middle of disc, anterior two thirds with light brown squamous pilosity laterally; prosternal process wide, as wide as two thirds of a procoxa, mesosternal process wide, square, rugose, as wide as one mesocoxa, metasternum with sulcus on whole length, deeper on apical half. Scutellum subquadrate, with light brown pilosity in middle. Elytra 1.3 times longer than wide; sides rounded laterally, humeri slightly projected, apex slightly truncate; surface with light brown pilosity and several dark brown patches: on basal third –excluding humeri- with irregular apical border, one round patch on side of disc, three small coarse patches close to suture in medium third, in base of apical third, with irregular borders.

Abdomen. First urosternite wide, abdominal segments II, II and IV short, nearly glabrous in middle, their cumulative length inferior to segment V length. The latter with medial sulcus on basal half and more abundant sparse greyish pilosity.

Legs. Integument dark brown; femora pedunculate, tibiae conical; integument with squamous light brown pilosity, dark brown pilosity forming rings at base and apex of meso- and meta tibiae. protarsomere (reported to first segment): II=1.1; III=2.4; mesotarsomere: II=0.5; III=0.6; metatarsomere: II=0.5; III=0.6.

Dimensions in mm (holotype female). Total length, 8.9; length of prothorax at center, 1.9; width of prothorax, 3.1; humeral width, 4.1; elytral length, 5.8.

Male. ( Fig. 4 ) Anterior tarsi wider, with longer setae, legs wider, especially anterior legs. No sulcus on base of last visible sternite.

Etymology. The specific epithet “ persona ” refers to the elytral pattern, which is similar to a mask (in Latin, persona = mask).

Figures

Figures 1-4. Octotapnia persona sp. nov. habitus. 1) Holotype female, dorsal habitus. 2) Holotype female, ventral habitus. 3) Holotype female, lateral habitus. 4) Paratype male, dorsal habitus.