Chileanthicus kinchega, Kejval, 2009
treatment provided by
Chileanthicus kinchega sp. nov.
Description (male, holotype). Head brown black, at places with rufous/reddish tinge; pronotum reddish brown, darkened anteriorly and antero-laterally; elytra largely brown, brown black near base, with paler suture, lateral margins and two, paired, rather vaguely outlined spots/bands ( Figs 146 View FIGURES 146–154 , 235 View FIGURES 232–241 ), the anterior spots uneven, extending towards base; legs, antennae and palpi yellowish brown, antennae somewhat darker, with rufous tinge.
Head 1.2 times as long as wide, widely rounded posteriorly; tempora subparallel; posterior temporal angles rounded but distinct. Eyes small, rather convex. Dorsal surface slightly glossy, distinctly punctured ( Fig. 146 View FIGURES 146–154 ); punctation clearly double, somewhat uneven, sparser in median line, coarse punctures conspicuous. Setation mostly short, subdecumbent, with scattered, distinctly longer erect setae. Antennae rather short, rather distinctly enlarged in distal third; antennomere III 1.9 times as long as wide, as long as IV; antennomere X 1.2 times, antennomere XI 1.8 times as long as wide.
Pronotum slightly longer than wide, as wide as head including eyes, nearly evenly rounded anteriorly. Pronotal disc convex, less conspicuous, dorso-lateral sides rather rounded, lateral outlines nearly straightly narrowing towards base in dorsal view. Dorsal surface slightly glossy, distinctly punctured; punctation similar to that on head, with coarse punctures moderately larger and rather oval. Setation as on head.
Elytra 1.7 times as long as wide. Surface moderately glossy, largely distinctly punctured ( Fig. 146 View FIGURES 146–154 ); basal punctation double, coarse punctures smaller than those of head and more widely spaced. Setation somewhat longer than on head, subdecumbent setae rather evenly directing posteriad, mostly brownish, silvery on paler markings ( Fig. 235 View FIGURES 232–241 ), with some silvery setae scattered in apical third; erect setae more conspicuous/numerous.
Metafemora unidentate ( Fig. 147 View FIGURES 146–154 ), subapical process rather small, narrow, obliquely projecting and pointed, facing inner side of tibia. Setation short, fine, mostly appressed.
Male abdominal sternum VII and tergum VII simple. Sternite VIII ( Fig. 148 View FIGURES 146–154 ); paired prongs strongly arcuate mediad, their widened apical portion rather densely setose ventrally. Tergite VIII simple, with posterior margin nearly evenly rounded.
Aedeagus ( Fig. 149 View FIGURES 146–154 ); apical portion of tegmen nearly twice as long as basal-piece, rather wide, strongly narroved and slightly produced into bluntly pointed apex, which is moderately curved ventrad in lateral view. Median lobe of aedeagus densely spinulose subapically on ventral side, and with a pair of short, divergent apical lobes.
Female. Externally identical to male.
Body length (♂ ♀). 3.3–4.2 mm (holotype 4.0 mm).
Variation. Head and pronotum more or less extensively darkened in some specimens, head sometimes nearly solid black; paler markings of elytra may be both conspicuous (extensive and rather contrasting, anterior spot joined with paler suture and lateral margins) or vaguely indicated, as in the specimen from Billeroo West Station.
Type material. Holotype: ♂, NSW Kinchega NP 32.30S 142.20E July 1986 disturbed scrub K. Henle ( ANIC) GoogleMaps . Paratypes: 1 ♀, same data as holotype ( ANIC) GoogleMaps ; 1 ♀, same data as holotype, except: Sept. 1985 ( ANIC) GoogleMaps ; 1 ♂, NSW Kinchega NP 32.30S 142.20E Sept. 1985 red-sand dune K. Henle // Formicomus sp. Det. J. F. Lawrence ( ANIC) GoogleMaps ; 1 ♀, same data, except: Sept. 1986, and lacking 2nd label ( ANIC) GoogleMaps ; 1 ♀, S. AUST 3 km NW Emu Dam 31°24‘38‘‘S 140°10‘35‘‘E Billeroo West Stn. Pitfalls 3-6 Sept. 1996 Nth Olary Plains Survey BEN 12301 View Materials ( SAMA) GoogleMaps .
Additional material. 1 ♀, South Australia, A. P. Bargess leg. ( SAMA) .
Differential diagnosis. C. kinchega sp. nov. resembles C. interruptus and C. decipiens sp. nov. in having unidentate metafemora, distinctly double punctation of the elytra, and somewhat bristly setation of the body surface (conspicuous erect setae). It differs from both of the previously mentioned species by the somewhat less elongate appearance (shorter, rather ovoid elytra), by the form and setation of the paler markings of the elytra (anterior band/spot exteding towards base, silvery setation less conspicuous, setae sparser and rather evenly pointing posteriad, not clearly swirled), and by all the male characters.
Etymology. Named after the type locality.
Distribution. Australia (New South Wales, South Australia).
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.