Chileanthicus campicola, Kejval, 2009

Kejval, Zbyněk, 2009, Taxonomic revision of the genus Chileanthicus Werner (Coleoptera: Anthicidae) 2180, Zootaxa 2180 (1), pp. 1-82 : 34-35

Chileanthicus campicola sp. nov.

( Figs 72–76 )

Type locality. Australia, South Australia, 2 km NE of Bimbowrie 32°01'30''S 140°09'45''E .

Description (male, holotype). Head brown to brown black; pronotum rufous brown; elytra brown to brown black, with slight bronze reflection; legs, antennae and palpi rufous brown.

Head 1.2 times as long as wide, widely rounded to angulate posteriorly; tempora parallel; posterior temporal angles somewhat rounded but distinct. Eyes small, convex. Dorsal surface moderately glossy, densely punctured ( Fig. 72 ); punctation double, coarse punctures only moderately larger than finer punctures; punctures somewhat unevenly spaced, sparser medially, with glossy median longitudinal line distinct over the whole length, most prominent on frons. Setation short and fine, mostly subdecumbent to appressed, with a few, quite inconspicuous, short, erect setae. Antennae moderately enlarged in apical third; antennomere III 1.8 times as long as wide, about as long as IV; antennomere X 1.6 times, XI 1.9 times as long as wide.

Pronotum 1.2 times as long as wide, nearly as wide as head including eyes, widely rounded anteriorly in dorsal view. Pronotal disc somewhat less conspicuous, dorso-lateral sides rather rounded, lateral outlines nearly straightly narrowing towards base in dorsal view, disc with slight indication of median longitudinal impression. Dorsal surface moderately glossy, densely punctured; punctation similar to that on head, evenly developed. Setation as on head.

Elytra 1.8 times as long as wide, rather evenly shaped, conjointly rounded apically. Surface rather moderately glossy, densely punctured ( Fig. 72 ); punctation simple, fine, rather evenly developed. Setation longer and more prominent than on head, distinctly bicoloured, mostly brownish and evenly directed posteriad, with whitish setae forming two paired transverse bands, and swirled medially ( Fig. 72 ); numerous whitish setae scattered also laterally, interconnecting transverse bands; erect setae sparsely scattered, very short, inconspicuous.

Metafemore unidentate ( Fig. 73 ), subapical process sharply pointed apically, facing inner side of tibia; both meso- and metatibiae with minute denticle on inner side apically. Setation uniformly short and fine; metatibiae on inner side apically with several longer setae, only slightly exceeding terminal spurs.

Both abdominal sternum and tergum VII simple. Sternite VIII ( Fig. 74 ); paired prongs strongly arcuately curved mediad, moderately widened and with some longer setae distally, with inner basal margin distinctly, rather densely setose. Tergite VIII at most very slightly emarginate apically.

Aedeagus ( Figs 75, 76 ); apical portion of tegmen 1.9 times as long as basal-piece, wide, subparallel, abruptly narrowed subapically in dorsal view, and with moderately produced, bluntly pointed apex; median lobe of aedeagus with a pair of large subapical, membranous lobes, moderately exceeding its less sclerotized apex, basal apodeme widened distally.

Female. Externally differing from male by simple meso- and metatibiae, lacking apical denticle, metatibiae short setose apically.

Body length. 3.6−3.9 mm (holotype 3.6 mm).

Variation. The paratypes are somewhat darker coloured, with the anterior portion of the pronotum brown black.

Type material. Holotype: ♂, S.AUST 2km NE Bimbowrie 32°01'30''S 140°09'45''E Bimbowrie Stn. pitfalls 26-31 Aug. 1996 Nth Olary Plains Survey OLA 01301 // S.Aust. Museum specimen ( SAMA) . Paratypes: ♀, same data as holotype ( SAMA) ; 1 ♀, S.AUST 5 km SE Benagerie 31°25'56"S 140°27'04"E Benagerie Stn. pitfalls 3-6 Sept. 1996 Nth Olary Plains Survey BEN 14101 // S.Aust. Museum specimen ( SAMA) .

Differential diagnosis. C. campicola sp. nov. is probably close to C. gammon sp. nov., as is suggested by the nearly identical external appearance and similarity of some of the male characters (wide tegmen, bilobed apex of median lobe of aedeagus). They can be barely distinguished by external characters, showing slight differences in body form, prominence of dorsal punctation of the head (cf. Figs 72 , 118 ), and form of the subapical process of the metafemora (cf. Figs 73 , 119 ). On the other hand, they differ clearly in morphology of male sternite VIII, tegmen and median lobe of aedeagus (cf. Figs 74–76 and 120–122 ).

Etymology. Composed from Latin campus (plain) and incola (inhabitant); named in reference to the locality data (Northern Olary Plains).

Distribution. Australia (South Australia).

Figures

FIGURES 72–80: Chileanthicus campicola sp. nov., male, holotype: 72, body form and punctation of head (top) and elytra (bottom); 73, metafemur; 74, sternite VIII; 75, apical portion of aedeagus in lateral view; 76, apical portion of tegmen (right) and median lobe (left) of aedeagus in ventral view; C. comes sp. nov., male, holotype: 77, body form and punctation of head (top) and elytra (bottom); 78, metafemur; 79, sternite VIII; 80, apical portion of aedeagus in ventral (right) and lateral (left) view. Scale (1.0 mm): A, 72, 77; B, 72, 78; (0.2 mm): C, 74; D, 79, 80; E, 75, 76.

FIGURES 112–122: Chileanthicus eyrensis sp. nov., male, holotype: 112, body form and punctation of head (top) and pronotum (bottom); 113, antenna; 114, metafemur; 115, apex of metatibia; 116, sternite VIII; 117, apex of aedeagus in ventral (left) and lateral (right) view; C. gammon sp. nov., male, holotype: 118, body form and punctation of head (top) and elytra (bottom); 119, metafemur; 120, sternite VIII; 121, apex of tegmen in ventral (left) and lateral (right) view; 122, apex of median lobe of aedeagus in ventral (left) and lateral (right) view. Scale (1.0 mm): A, 118, 112; B, 113, 114, 119; (0.2 mm): C, 116, 120; D, 115, 121, 122; E, 117.