Olivensa sonzognii Dalens and Robin, 2019

Dalens, Pierre-Henri & Robin, Frédéric, 2019, Genus Olivensa Lane, 1965 in French Guiana, and description of a new species (Coleoptera: Cerambycidae: Lamiinae), Insecta Mundi 735 (735), pp. 1-7 : 2-3

Olivensa sonzognii Dalens and Robin , sp. nov.

( Fig. 1–8 )

Type material. Holotype male card mounted. First label: “Montagnes des Chevaux, Roura, 8-X-2009, FIT, SEAG leg. (PHDC)”. Second label: GPS: N 4°44′29″ W 52°25′37″. Third label: “ Olivensa sonzognii sp. nov. Dalens and Robin det. 2019”. Fourth label: “ HOLOTYPE ” (red). Deposited at MNHN.

Paratypes (15): FRENCH GUIANA, 1 male, Kourou , Piste des Compagnons pk 3, hand catch, 17-VIII- 1984, Gérard Duranton leg. (IRD collection #797) ; 1 female, Roura , route de Kaw pk 3, 16-VII-2007, hand catch, Pierre-Henri Dalens leg. (PHDC) ; 1 female, Régina , pk 125 Piste Kapiri, 15-VIII-2009, FIT, Jean-Louis Giuglaris leg. (JLGC) ; 1 male, Régina , RNN des Nouragues Saut Pararé, 8-IX-2009, FIT, SEAG leg. (PHDC) ; 1 female, Roura Montagne des Chevaux , 6-XII-2009, FIT, SEAG leg. (PHDC) ; 1 male, Roura , Montagne des Chevaux, 22-VII-2010, FIT, SEAG leg. (PHDC) ; 1 male, Régina, Nouragues RNN Station Inselberg , 2-IX-2010, FIT, SEAG leg. (PHDC) ; 1 female, Roura , Montagne des Chevaux, 2-VIII-2011, FIT, SEAG leg. (PHDC) ; 1 female, Roura , Montagne des Chevaux, 4-VIII-2012, FIT, SEAG leg. (PHDC) ; 1 male, Roura , Cacao “La Source”, 6-IX-2012, hand catch, Christophe Faynel leg. (PHDC) ; 1 male, Kourou , Montagne des Singes, 19-VIII-2012, Malaise trap, Denis Faure leg. (DFC) ; 1 female, Macouria , Zone Artisanale Wayabo Matiti, 9-XII-2012, FIT, Jean-Louis Giuglaris leg. (JLGC) ; 1 female, Roura , Montagne des Chevaux, 3-VIII-2013, Malaise trap, SEAG leg. (PHDC) ; 1 male, Roura , Montagne des Chevaux, 6-IX-2014, automatic light trap, SEAG leg. (PHDC) ; 1 male, Saül , Montagne Pelée, 2-II- 2017, automatic light trap, SEAG leg. (FRC) .

Diagnosis. Olivensa sonzognii can be distinguished from other members of the genus by the following combination of characters: integument black except thorax, basal elytral quarter and last two tarsal segments, testaceous orange, apical quarter of elytra with ashy pilosity. The new species differs from O. megacephala ( Bates, 1866) by: its vertex with a narrower glabrous space between areas of black pilosity, genae covered with ashy pilosity, thorax and scutellum entirely testaceous-orange with orange pilosity, underside testaceous orange except abdominal apex, dark brown beyond fourth ventrite; in O. megacephala , the glabrous areas at the vertex are wider, presence of tufts of whitish pilosity on frons centrally and between genae and temples laterally, the thorax is black with squamous, orange pilosity laterally and tufts of whitish pilosity at anterior margin and metepimera laterally, near basal margin centrally.prothorax underside dark, base of elytral suture covered with whitish pilosity, abdominal apex darken after half of third ventrite.

O. sonzognii sp. nov. differs from O. cephalotes by the head of the latter being entirely orange, without a glabrous area on the vertex, its thoracic punctation deeper, anterior legs entirely orange, mesofemora and at least part of metafemora orange, whereas legs are entirely black in O. sonzognii sp. nov.

Description. Male. ( Fig. 1–4 ) Head with integument black, with strong, deep punctation, vertex and frons nearly glabrous between inferior ocular lobes, with ridge of dense short black pilosity on each side, appearing at antennal tubercle base developing posteriorly between upper ocular lobes and surrounding the latter until they narrow, coronal suture still glabrous; antennal tubercles slightly projected; upper ocular lobes separate by 1.8 times their width, inferior lobes strongly convex; genae moderately projected, covered with recumbent whitish pilosity, the latter still densely on lateral side of mandible inferiorly and with decreasing density on frons inferior part centrally; labium short, glabrous with dark brown integument; antennae surpassing elytral apex at segment VII, scape subconical with dense shallow punctation and short dark brown pilosity, two last antennal segments with lighter pigmentation and pilosity, getting progressively whitish toward antennal apex. Antennal formula related to scape: I=1.0; II=0.2; III=1.7; IV=1.2; V=0.9; VI=0.8; VII=0.7; VIII=0.7; IX=0.6; X=0.6; XI=0.6.

Thorax transverse, 1.2 times wider than long, with yellowish orange integument, surface with stronger punctation laterally and basally, short yellowish pilosity with sparse erect setae, disc with three smooth glabrous gibbosities one at half length, one central, one more basal, shallow sulcus transversal at base, apical and basal margins bordered, underside with prominent coxae, prosternal process smooth, its width 0.6 times procoxal width.

Scutellum trapezoidal with orangish integument and converging golden pilosity. Elytra 2.4 times longer than wide, with sides slightly narrowing towards middle; smooth carinae laterally and emarginate apex; disc slightly depressed centrally on basal two thirds, with rows of strong punctation longitudinally, divided into three parts, 1) a basal triangle with orangish integument bearing relatively long diverging golden setae near suture, surrounded first with orange pilosity, the latter surrounded with ashy pilos- ity, 2) a median hourglass shaped part, wider laterally, with dark brown integument and concolorous short pilosity, and 3) an apical part, with dark brown integument covered with ashy pilosity; underside with completely orange integument and short lying orange pilosity. Mesosternal process half as wide as mesocoxa. Metasternal sulcus visible for its entire length.

Abdomen with orangish shiny integument with orange short sparse pilosity and long ashy erect setae denser laterally and apically; segments I and II completely orange, segment III brownish laterally, following segments completely dark brown; apex of last visible segment rounded.

Legs with dark brown integument, sparse short brownish pilosity associated with erect setae on tibiae; mesofemora slightly swollen on apical half; last segment of tarsi with lighter brown integument; tarsal claws with inner teeth shorter than external; tarsal lengths in relation to first segment: protarsi I = 1.0, II = 0.8, III = 1.2; mesotarsi I = 1.0, II = 0.9, III = 1.0; metatarsi I = 1, II = 0.6, III = 0.7.

Female. ( Fig. 5–8 ) General aspect more robust, antennae shorter, surpassing elytra at segment VIII, underside with less dense setae except apically, apex of last visible segment slightly emarginate dorsally.

Holotype male/ paratype female. (Dimensions in mm). Total length: 8.1/8.8; thoracic length: 1.6/1.7; thoracic width: 1.8/2.0; elytral length: 5.1/5.6; elytral width at humeri: 2.1/2.4.

Size range (mm). Total length: male: 8.0–8.2; female: 7.8–8.9.

Etymology. The species is warmly dedicated to Franck Sonzogni for his tireless entomological activity and his precious help in the field and in the laboratory.

Taxonomic comments. This new species has been misidentified frequently, even on taxonomic refer- ence websites, perhaps because of doubts concerning the identification of Olivensa cephalotes (Pascoe, 1858) . The two species can be separated using the diagnosis above.

Figures

Figures 1–8. Olivensa sonzognii sp. nov. 1) Dorsal habitus, holotype male. 2) Ventral habitus, holotype male. 3) Lateral habitus, holotype male. 4) Head, frontal view, holotype male. 5) Dorsal habitus, paratype female. 6) Ventral habitus, paratype female. 7) Lateral habitus, paratype female. 8) Head, frontal view, paratype female.