Ceresium olidum (Fairmaire, 1850)

Waqa-Sakiti, Hilda, Winder, Linton & Lingafelter, Steven W., 2015, Review of the genus Ceresium Newman, 1842 (Coleoptera, Cerambycidae) in Fiji, ZooKeys 532, pp. 15-53 : 26

Taxon classification Animalia Coleoptera Cerambycidae

Ceresium olidum (Fairmaire, 1850) Fig. 9

Hesperophanes olidus : Fairmaire 1850: 63, Tahiti, holotype (MNHN).

Description.

Based on a photograph of the holotype specimen (MNHN) and two specimens from 2008 surveys (FNIC, USP). Size 6.5-7.0 mm long, 1.0-1.5 mm wide at humeri; integument color orangish-brown (Fig. 9a). Head with shallow interantennal tubercle region, tubercles only slightly raised; punctate with very sparse ochraceous pubescence on tubercles and throughout frons; vertex and occiput with sparser ochraceous pubescence. Frons and frontoclypeal margin punctate with sparse, long, ochraceous hairs (Fig. 9b). Antennae long, extending beyond elytra by two antennomeres. Antennae with vestiture of short, dense, ochraceous setae. Antennomeres unspined and slightly expanded at apices; last antennomere almost subequal the length of penultimate. Antennomere 3 and 4 each shorter than scape; 5 longest. Scape long, clavate, extending to apical fifth of pronotum.

Pronotum rounded, widest across middle, and as long as wide. Pronotum with fine, sparse and evenly spaced punctures throughout (Fig. 9c). Elytron with fine, evenly spaced ochraceous pubescence throughout. Punctation shallow becoming shallower and indistinct towards apex. Elytral apex broadly rounded to suture. Scutellum triangular in shape, covered with sparse, translucent, inconspicuous pubescence. Legs small in length, femora distinctly but gradually clavate, hind femora extending to elytral apex.

Venter of abdomen and thorax with sparse, ochraceous pubescence throughout. Prosternal process absent. Procoxal cavities open posteriorly. Mesocoxae closed laterally to mesepimeron (Fig. 9d). Mesosternum rather gradually declivous, without anterior tubercle, and sulcate anteriorly. Apex of terminal ventrite truncate to unevenly rounded, without notch.

Remarks.

This species is distinguished by having the pronotum with uniform, dense punctation, the third antennal segment extending to about the midpoint of pronotum, and the head, pronotum and scutellum with fine, sparse, ochraceous pubescence. It shares with Ceresium scutellaris an incomplete prosternal process between the procoxae. Originally described as Hesperophanes , it is known from Viti Levu and the Lau Islands, Fiji and also recorded from Tahiti and Raiatea of the Society Islands of French Polynesia in the original description ( Dillon and Dillon 1952; Fairmaire 1850).