Chileanthicus maritimus, Kejval, 2009

Kejval, Zbyněk, 2009, Taxonomic revision of the genus Chileanthicus Werner (Coleoptera: Anthicidae) 2180, Zootaxa 2180 (1), pp. 1-82 : 22-23

publication ID	https://doi.org/ 10.11646/zootaxa.2180.1.1
DOI	https://doi.org/10.5281/zenodo.5457843
persistent identifier	https://treatment.plazi.org/id/3949251E-FFB8-7771-FF63-DBE2FDD3F94F
treatment provided by	Felipe
scientific name	Chileanthicus maritimus
status	sp. nov.

Treatment

Chileanthicus maritimus sp. nov.

( Figs 33 View FIGURES 27–33 , 38–42 View FIGURES 34–44 , 221 View FIGURES 220–231 )

Type locality. Chile, Coquimbo, Elqui Prov., NE of Tongoy, Puerto Velero.

Description (male, holotype). Head and pronotum brown black, elytra dark brown, with narrow, rather sharply outlined and contrasting, transverse, pale yellowish band close behind mid-length, interrupted on suture, not touching lateral margins ( Fig. 221 View FIGURES 220–231 ); legs, antennae and palpi dark brown, tibiae, tarsi and basal antennomeres paler.

Head 1.2 times as long as wide, unevenly, moderately widely rounded posteriorly in dorsal view; tempora subparallel closely behind eyes, posterior temporal angles at most slightly indicated, rounded. Dorsal surface rather moderately glossy, punctured, largely finely corrugated; punctation mostly somewhat obscured by corrugation, rather distinct/coarse postero-medially. Setation short, subdecumbent, with a few longer, more raised setae. Eyes small, moderately convex. Antennae moderately enlarged in terminal third ( Fig. 33 View FIGURES 27–33 ); antennomere III 2.3 times as long as wide, at most slightly longer than IV; antennomere X 1.3 times, XI 1.8 times as long as wide.

Pronotum 1.3 times s long as wide, slightly narrower than head including eyes, nearly evenly rounded anteriorly in dorsal view; pronotal disc convex, dorso-lateral sides rounded, lateral outlines nearly straightly narrowing posteriad in dorsal view. Dorsal surface rather moderately glossy, finely corrugated, punctured; punctation and setation as on head.

Elytra 1.6 times as long as wide, truncate apically. Surface glossy, finely but distinctly punctured; basal punctation finer than that on head. Setation similar to that on head, raised longer setae more numerous and distinct.

Metafemora unidentate (similarly as in Fig. 35 View FIGURES 34–44 ), subapical process small, obliquely projecting, pointed, facing outer side of tibia. Setation rather uniformly short and fine.

Abdominal sternum VII modified ( Fig. 38 View FIGURES 34–44 ), its posterior margin rather deeply emarginate medially, lateral sides of emargination slightly produced, each with 7–8 peg-like setae. Tergum VII moderately emarginate postero-medially. Sternite VIII ( Fig. 39, 40 View FIGURES 34–44 ); paired prongs simple, sharply curved ventrad, each with 9–10 peg-like setae ventrally. Tergite VIII rather deeply emarginate postero-medially.

Aedeagus ( Figs 41, 42 View FIGURES 34–44 ); apical portion of tegmen short, 0.4 times as long as basal-piece, simple, its dorsal side evenly arcuate and with small denticle (short transverse edge) near base in lateral view, evenly narrowing towards blunt apex in ventral view; median lobe of aedeagus with a pair of slender, pointed, sclerotized projections apically.

Female. Externally differing from male mainly by sternum VII simple, with posterior margin evenly rounded; tergum VII subtriangular, narrowing posteriorly, evenly rounded apically, its surface vaulted, moderately impressed subapically.

Body length (♂ ♀). 2.9–3.6 mm (holotype 2.9 mm).

Type material. Holotype: ♂, CHILE IV REGION, Puerto Velero 10/ 13 Septiembre 1999 Leg. V. M. Diéguez M. // COLLECTION V. M. Diéguez M. ( MNNC) . Paratypes: 1 ♀, Tongoy. IV REGIÓN 08 NOV 1992 LEG. F. RAMÍREZ ( MNNC) ; 1 ♂, PUERTO VELERO TONGOY. IV REG. 30 MTS 30 DIC 1998 LEG. F. RAMÍREZ ( ZKDC) ; 1 ♂, TONGOY (AERÓDROMIO) IV REG. 19 OCT 1989 LEG. F. RAMÍREZ ( FRSC) .

Differential diagnosis. Chileanthicus maritimus sp. nov. can be recognized mainly by the form of the apical portion of the tegmen, which is evenly arcuate in lateral view, and with a small denticle (transverse edge) on the dorsal side situated rather basally ( Fig. 41 View FIGURES 34–44 ). Externally all the examined specimens display a rather dark coloured body, with a narrow and sharply outlined (contrasting) transverse band of the elytra, and a somewhat less glossy head and pronotum (owing to the dense and evenly developed corrugation). However, variability of these characters is not excluded.

Etymology. From Latin maritimus (coastal, maritime); named in reference to the proximity of all collections to the Pacific Ocean coast.

Distribution. Chile (Coquimbo).