Chileanthicus eyrensis, Kejval, 2009

Kejval, Zbyněk, 2009, Taxonomic revision of the genus Chileanthicus Werner (Coleoptera: Anthicidae) 2180, Zootaxa 2180 (1), pp. 1-82 : 45

publication ID	https://doi.org/ 10.11646/zootaxa.2180.1.1
DOI	https://doi.org/10.5281/zenodo.5321604
persistent identifier	https://treatment.plazi.org/id/3949251E-FF81-774B-FF63-DC1EFD2BF86B
treatment provided by	Felipe
scientific name	Chileanthicus eyrensis
status	sp. nov.

Treatment

Chileanthicus eyrensis sp. nov.

( Figs 112–117 View FIGURES 112–122 )

Type locality. Australia, South Australia, 5 km E of Emerald Springs , 29°22'40''S 137°06'57''E GoogleMaps .

Description (male). Head dark brown, with reddish tinge; pronotum reddish brown; elytra dark brown, with paler suture and lateral margins and with two, paired, rather vague, rufous to yellowish bands/spots ( Fig. 112 View FIGURES 112–122 ); the posterior band somewhat more prominent, sinuous; legs, antennae and palpi rufous brown.

Head 1.2 times as long as wide, widely rounded to angulate posteriorly; tempora parallel; posterior temporal angles rounded but distinct. Eyes small, convex. Dorsal surface slightly glossy, distinctly, densely punctured ( Fig. 112 View FIGURES 112–122 ); punctation simple, rather evenly developed, with indication of short, glossy median line mesally. Setation fine, short, subdecumbent to appresssed; with a few, very short, inconspicuous, erect setae. Antennae rather short, moderately enlarged in terminal third ( Fig. 113 View FIGURES 112–122 ); antennomere III 2.2 times as long as wide, about as long as IV, antennomere X 1.4 times, XI about twice as long as wide.

Pronotum 1.1 times as long as wide, at most slightly wider than head including eyes, widely rounded anteriorly. Pronotal disc less distinct, lateral margins forming rather rounded edge, lateral outlines slightly angulate at the widest place and nearly straighly narrowing towards base in dorsal view. Dorsal surface alightly glossy, distinctly and densely punctured; punctation simple, similar to that on head, slightly denser, punctures rather oval. Setation as on head.

Elytra 1.9 times as long as wide, conjointly rounded apically. Surface at most moderately glossy, distinctly punctured ( Fig. 112 View FIGURES 112–122 ); basal punctation simple, finer than on head. Setation mostly subdecumbent to appressed, rather evenly directing posteriad, pale brownish, with silvery setae both covering pale elytral bands and scattered on dark coloured surface (similarly as in Fig. 233 View FIGURES 232–241 ); with sparsely scattered, very short and inconspicuous, erect setae.

Metafemora unidentate ( Fig. 114 View FIGURES 112–122 ); subapical process strong, pointed apically, facing inner side of tibia; mesotibiae with small denticle on inner side subapically. Setation uniformly short, subdecumbent; metatibia with a slender tuft of conspicuously long setae on inner side apically ( Fig. 115 View FIGURES 112–122 ).

Abdominal sternum VII and tergum VII simple. Sternite VIII ( Fig. 116 View FIGURES 112–122 ); paired prongs narrow at base and then strongly widened, dorso-ventrally flattened, subparallel, somewhat obliguely truncate apically in dorsal view, with setose margins, especially apically. Tergite VIII with posterior margin very slightly emarginate medially.

Aedeagus ( Figs 117 View FIGURES 112–122 ); apical portion of tegmen 2.2 times as long as basal-piece, narrow, simple, bent in lateral view, apex beak-like shaped in lateral view and bluntly pointed. Median lobe of aedeagus terminating in a pair of simple, membranous lobes, finely spinulose on inner side subapically.

Female. Unknown.

Body length (♂). 3.5 mm.

Type material. Holotype: ♂, S.AUST. 5km E Emerald Spr 29°22‘40“S 137°06‘57“E pitfall dune, canegrass 15-19 April, 1996 Lake Eyre Sth Survey ES 03 // S.Aust. Museum specimen ( SAMA). GoogleMaps

Differential diagnosis. C. eyrensis sp. nov. resembles C. communis sp. nov., mainly in having similar setation of the elytra (scattered whitish setae). It differs from the latter species by the somewhat less densely and more distinctly punctured elytra (interspaces smooth, cf. Figs 112 View FIGURES 112–122 , 81 View FIGURES 81–89 ), slightly angulate antero-lateral sides of pronotum in dorsal view (rounded in C. communis sp. nov., cf. Figs 81 View FIGURES 81–89 , 112 View FIGURES 112–122 ), and by all the male characters (see the key, cf. Figs 116, 117 View FIGURES 112–122 and 83, 85 View FIGURES 81–89 ).