Lamprosoma cambuci Santos, Jorge & Zarbin 2026, sp. nov.

Le résumé fourni par la source

5.3. 2.Lamprosoma cambuciSantos, Jorge & Zarbin sp. nov. Figures 2, 3, 4, 5, 6, 12 Diagnoses. The species has an oval body in dorsal view, strongly convex dorsally and flat ventrally (Fig. 2 A, B). The head, pronotum, and elytra are matte, iridescent blue (Fig. 2 A – H), while the mouthparts, antennae, legs, and abdomen are bluish black. The prosternal process is longer than wide and gently constricted in the middle in females. The last abdominal ventrite is larger than the previous three; in females, it presents a concavity densely punctate and covered with setae, while in males, it bears a concentrated tuft of setae medially at the apex. The apical margin of the dorsal genital valve uniformly slender (Fig. 6 D), bearing short and thick setae. Dorsal valve medially projected. Dorsal sclerites paired, elongated, curved to follow the contour of the ventral wall. Ventral sclerites paired, elongated, reaching the median portion of the aedeagus, apically sinuous. Sclerite in the basal region possibly homologous to the ejaculatory hook (Fig. 6 A – C). Single spermatheca, without chamber formation (Fig. 6 E). A large chitinous cushion (chitinpolster) present, with lateral folds widened, bending upwards and posteriorly extended into a longitudinal twig, median fusion of the lateral folds of the chitinpolster, forming an H-like structure. Styli present and fused. Spermathecal ducts intricate. Description. MALE: Body. Oval, strongly convex dorsally and flat ventrally (Fig. 2 A, B). — Integument color. Head, pronotum, and elytra lead blue (Fig. 2 A, B), with violaceous reflections; ventral surface, including legs and abdomen, dark blue. Elytra with ten rows of punctures extending from the base to the apex, where they merge. In dorsal view, only eight rows are visible. Each puncture with a short, yellowish hair. — Head. Frons with fine punctures, evenly distributed (Figs 4, 5 A – E). Head anteriorly flat, with very slight, rounded impression in the interocular space in the males (Fig. 2 C). Eyes emarginated at the level of antenna insertion. Antennae (Figs 2 B, 4 F) short, with eleven segments, inserted between the base of the eye and lateral edges of the clypeus. Labrum short, sub quadrangular, with angulate lateral margins. — Prothorax. Pronotum convex, narrower than the base of elytra, sinuous at base, with fine punctures like those on frons in the posterior region and coarser in the anterior region; prosternal process longer than wide (Figs 2 B, 4 E – G), sinuous medially, and truncated at apex. — Meso- and metathorax. Mesothorax small, with triangular scutellum, with acute apex (Fig. 2 A). Epipleura narrow. Elytral apex with the inner surface bearing a depression that receives the denticles on the apex of the last ventrite, forming an elytral locking mechanism. Prosternal process narrow and length than width. Anterior legs (Fig. 2 B, D) with femora with the inner margin project into the median portion, tibiae with a small tooth-like in the internal and external portion apex. Four visible tarsomeres; the last tarsomere protrudes less than one-third of the anterior tarsal lobe, with an appendiculate claw (Fig. 4 I). Middle and Posterior legs (Figs 2 B, 4 G) similar to the anterior leg, except for the transverse coxae and femora lack internal projections. — Abdomen. with five ventrites, the last serrated at the apex (elytral lock mechanism) (Fig. 4 H). Ventrite I with lateral arc-shaped depressions to receive the metafemora (Figs 2 B, 4 G); Ventrite II to IV medially punctate and with short setae, ventrite V more densely punctate and with long setae. — Aedeagus (Fig. 6 A – D). Apical margin of the dorsal valve uniformly slender, bearing short and thick setae. Dorsal valve medially projected. Apical sclerites paired, elongate, curved to follow the contour of the ventral wall. Median sclerites paired, elongate, reaching the median portion of the aedeagus, apically sinuous. Sclerite in the basal region possibly homologous to the ejaculatory hook. — FEMALE (Figs 3 A – D, 5 A – F, 6 E): Head anteriorly flat, with a very strongly, roundly impressed on the interocular space (Figs 3 C, 5 C, 5 E). Prosternal process length than width (Figs 3 B, 5 E). Abdominal ventrite V more strongly punctate and densely pilose than in males. One single spermatheca (Fig. 6 E), without chamber formation, hook-shaped. A large chitinous cushion (chitinpolster) present, with lateral folds widened, bending upwards and posteriorly extended into a longitudinal twig, median fusion of lateral folds of the chitinpolster, forming an H-like structure. Styli present and fusion. Spermathecal ducts intricate. Egg case. Brownish, host plant’s wood fibers visible, with three vertical rows of externally projecting spicules surrounding the entire case, forming a total of seven vertical lines of spicules (Fig. 12 J, L, K). Larval case. Brownish, “ bonnet Phrygian ” - like; host plant’s wood fibers visible (Fig. 12 C, E, F). Host plants. Campomanesia phaea (O. Berg) Landrum (Myrtaceae). Parasitoid. Undetermined wasp species belonging to Brasema Cameron, 1884 (Hymenoptera: Chalcidoidea: Eupelmidae) (Fig. 14 A – F). Geographical distribution. Brazil: Minas Gerais, Aiuruoca (Fig. 11). Type series. The type series of the new species of Lamprosoma comprises 13 specimens: the holotype (male) and five paratypes (♀ and ♂), being the holotype and three paratypes deposited in the DZUP, along with the parasitoid wasp (a single individual that emerged from a pupal case), while two paratypes (one ♀ and one ♂) were deposited in the Invertebrate Collection of the Instituto Nacional de Pesquisas da Amazônia – INPA. Seven paratypes (♀ and ♂) that were used in the molecular extraction and in the scanning electron microscope (SEM) images were also deposited in the DZUP and INPA. — DZUP. Holotype ♂ labeled: BRASIL: Minas Gerais, Aiuruoca, | Sítio Angai Cambuci. | 28. VIII. 2024 | Col. Thiago Nicoliello, 2024; Consumindo Campomanesia phaea | (O. Berg) Landrum | Nome popular: Cambuci.; HOLOTYPE | Lamprosoma cambuci | Santos, Jorge & Zarbin, 2025; DZUP | 325202. — One paratype ♀ and two paratypes ♂ labeled: BRASIL: Minas Gerais, Aiuruoca, | Sítio Angai Cambuci. | 28. VIII. 2024 | Col. Thiago Nicoliello, 2024; Consumindo Campomanesia phaea | (O. Berg) Landrum | Nome popular: Cambuci.; PARATYPE | Lamprosoma cambuci | Santos, Jorge & Zarbin, 2025; DZUP | 325199; 325200; 325201. — Used in molecular and MEV analyses: Three ♀ and three ♂ labeled: BRASIL: Minas Gerais, Aiuruoca, | Sítio Angai Cambuci. | 28. VIII. 2024 | Col. Thiago Nicoliello, 2024; Consumindo Campomanesia phaea | (O. Berg) Landrum | Nome popular: Cambuci.; PARATYPE | Lamprosoma cambuci | Santos, Jorge & Zarbin, 2025 | Det. A. T. dos Santos, 2024; DZUP | 325186; 325187; 325188; 325189; 325190; 325191; 325192; 325193. — INPA. One paratype ♀ and one paratype ♂ labeled: BRASIL: Minas Gerais, Aiuruoca, | Sítio Angai Cambuci. | 28. VIII. 2024 | Col. Thiago Nicoliello, 2024; Consumindo Campomanesia phaea | (O. Berg) Landrum | Nome popular: Cambuci.; PARATYPE | Lamprosoma cambuci | Santos, Jorge & Zarbin, 2025; INPA -COL | 002861; INPA -COL 002862. Etymology. The specific name “ cambuci ” is used in apposition and was chosen based on the common name of the host plants consumed by the species. The term cambuci originates from the Tupi-Guarani Indians and means “ pot of water, ” referring to the vase-like shape of the fruit. According to Navarro (2013), the Tupi-Guarani term kamu’si denotes a vase or a funerary urn used by the Tupis. Remarks. This species belongs to the “ D 2 A ” group delimited by Lacordaire (1848) (see Table S 1). This species closely resembles Lamprosoma azureum in terms of its external morphology, particularly coloration. These species exhibit a uniform blue dorsal surface without additional spots. In both species, the dorsal surface is a matte and iridescent blue. The ventral sclerites are paired and elongate, extending to the median portion of the aed

Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.