Cimrmanium angulinotum, Bílý, Svatopluk, 2009

Bílý, Svatopluk, 2009, A new genus and species of the tribe Trigonogeniini Cobos, 1956, from Belize (Coleoptera: Buprestidae), Zootaxa 2108, pp. 65-68 : 66-67

Cimrmanium angulinotum , sp. nov. ( Figs. 3–5 )

Type specimen. Holotype, female: “ Belize, Cayo. Chiquibul Forest, Las Cuevas / Ex Malaise Trap., Emptied Aug. 2001, G. C. McGavin Coll. / G. C. McGavin Coll., Pres G. C. McGavin, OUM-2002-006”; holotype deposited in the Oxford University Museum.

Description of the female holotype. Medium-sized, length: 11.0 mm, width: 4.0 mm; suboval, rather convex, distinctly enlarged posteriorly ( Fig. 3 ); dorsal surface brown-bronze; head and pronotum with purple lustre; elytra with red-cupreous lustre which is more intense at posterior third; antennae and legs black; ventral surface dark bronze with brass tinge; frons and vertex with short, dense, semi-erect, black pubescence, pronotum asetose, elytra with short, recumbent black and grey pubescence; ventral surface with extremely short, grey pubescence. Head relatively large but distinctly narrower than anterior pronotal margin; frontoclypeus widely emarginate anteriorly with strongly elevated, lustrous frontoclypeal carina, supraantennal carinae strongly developed, lustrous, fused with frontoclypeal carina; frons deeply, widely impressed with inverted W-shaped, transverse, lustrous elevation at middle; upper part of frons with obtuse carinae along inner margins of eyes; eyes large, widely reniform, not projecting beyond outline of head; vertex finely depressed, 0.8 times as wide as width of eye; antennae short, reaching midlength of lateral pronotal margins, obtusely serrate from 4th antennomere ( Fig. 5 ); scape 3.0 times as long as wide, slightly pyriform, pedicel short, ovoid, 1.2 times as long as wide, antennomere 3 subcylindrical, 2.3 times as long as wide, antennomere 4 obtusely triangular, 3.0 times as long as wide; antennomeres 5–10 obtusely serrate 1.3 – 2.1 times as long as wide, terminal antennomere pyriform with somewhat truncate apex; sculpture of head consisting of rather dense, simple, rounded punctures with indistinct central grains each bearing one seta.

Pronotum 2.5 times as wide as long, much narrower than elytra at humeri; anterior margin widely emarginate without median lobe, posterior margin bisinuate; lateral pronotal margins sharply angulate at posterior fifth, deeply, narrowly emarginate before posterior angles ( Fig. 3 ); lateral margin formed by sharp, nearly blade-like carina reaching almost to anterior pronotal angle, prelateral carina well-developed reaching anterior fourth of pronotum; lateroposterior pronotal depressions wide and deep, prescutellar pit missing; median part of pronotum finely, transversely rugose, lateral portions (incl. lateroposterior depressions) finely punctate. Scutellum very small, flat, slightly longer than wide.

Elytra rather convex, slightly uneven, 1.7 times as long as wide with maximum width at posterior fourth; humeral swellings small but well-developed, basal transverse groove narrow, complete, reaching scutellum; each elytron with very feeble, wide, shallow postmedian and preapical depressions filled with indistinct pale tomentum; humeral portion and posterior third of elytral margin finely serrate, each elytron narrowly, separately rounded; epipleura narrow nearly reaching apex of elytra; each elytron with 10 rows of fine, isolated punctures which become more distinct laterally, first two sutural rows poorly developed; interstices flat with fine, dense, irregular punctation.

Entire ventral surface with rough, rather dense punctation composed of rounded or horse-shoe-shaped punctures; prosternal process flat with somewhat carinate lateral margins, slightly enlarged posteriad procoxae, pointed apically; anal ventrite regularly convex, obtusely truncate apically with very finely serrate lateral margin. Legs relatively long, slender, femora fusiform, tibiae straight, slender, not modified, left-sided tarsi missing in holotype, right-sided tarsi incomplete without tarsal claws.

Ovipositor ( Fig. 4 ) long, slender, nearly tubular, strongly sclerotised; styli very small, inserted laterally just before apex of ovipositor.

Etymology. The specific epithet “ angulinotum ” is chosen to stress the characteristic pronotal shape.

Comments. This new taxon is known from the female holotype, thus nothing about the male nor any variation can be added. In addition, nothing is known about the bionomy of the genera Cimrmanium and Hovorigenium . Larva of the Chilean subspecies Trigonogenium angulosum ruginosum (Fairmaire, 1868) , together with its bionomy, was described by Bílý & Volkovitsh (2007). This beetle develops in Fabiana imbricata R. & P. ( Solanaceae ) and thus possibly other species of Trigonogenium use species of Fabiana Ruiz & Pavlón as their host plants. Since the tribe Trigonogeniini is very isolated from a taxonomic viewpoint and representatives of the family Solanaceae are only very exceptionally used as host plants of Buprestidae we might suppose that the genera Cimrmanium and Hovorigenium are associated with this plant family.

Figures

FIGURES 1 – 5. 1. Hovorigenium ecuadorense Bellamy, 2007, holotype, female, 7.2 mm (photo by C. L. Bellamy); 2. Trigonogenium angulosum ruginosum (Fairmaire, 1868), female, Chile – Las Trancas, 9.5 mm; 3. Cimrmanium angulinotum gen. nov., sp. nov., holotype, female, 11.0 mm; 4. same, ovipositor; 5. same, left antenna.