Chileanthicus interruptus ( Lea, 1922 ) Kejval, 2009

Kejval, Zbyněk, 2009, Taxonomic revision of the genus Chileanthicus Werner (Coleoptera: Anthicidae) 2180, Zootaxa 2180 (1), pp. 1-82 : 53-54

Chileanthicus interruptus ( Lea, 1922) comb. nov.

( Figs 141–145 )

Formicomus interruptus Lea, 1922: 504 .

Type locality. Australia, Queensland, Townsville .

Redescription (male, Townsville, SAMA). Head and pronotum rufous brown, head darkened dorsally; elytra largely dark rufous brown, darkened in apical third, with two paler, rather vague, transverse bands, interrupted on suture; legs rufous brown, femora darker; antennae and palpi rufous brown, distal antennomeres darker.

Head 1.2 times as long as wide, widely rounded posteriorly; tempora moderately narrowing posteriad; posterior temporal angles somewhat rounded but distinct. Dorsal surface moderately glossy, distinctly, densely punctured ( Fig. 141 ); punctation clearly double, rather evenly developed, coarse punctures conspicuous. Setation fine, pale to whitish, short, decumbent, with very sparsely scattered, longer erect setae. Antennae slightly enlarged in terminal third; antennomere III 1.8 times as long as wide, about as long as IV; antennomere X 1.4 times and antennomere XI 2.1 times as long as wide.

Pronotum 1.1 times as long as wide, slightly wider than head including eyes, widely rounded anteriorly; pronotal disc moderately convex, flattened to slightly impressed medially near base, its lateral margins forming rounded edge, lateral outlines nearly evenly narrowing posteriad, slightly impressed at mid-length in dorsal view. Dorsal surface moderately glossy; punctation nearly as on head, coarse punctures sparser near base medially. Setation as on head.

Elytra 1.7 times as long as wide, conjointly rounded apically. Surface rather glossy, distinctly punctured; basal punctation double, coarse punctures about as large as but more widely spaced than those on head and distinctly deeper. Setation mostly pale to brownish, decumbent, silvery and distinctly swirled on elytral bands (regardless on their prominence; Fig. 141 ); erect setae more numerous, longer than those on head.

Metafemora unidentate ( Fig. 142 ), subapical process somewhat obliquely projecting, pointed apically, facing inner side of metatibia; mesotibiae with a small denticle on inner side apically; metatibiae simple. Setation rather uniformly short, decumbent.

Abdominal sternum VII and tergum VII simple. Sternite VIII ( Fig. 143 ); paired prongs narrowed and obliquely truncate apically, short setose in distal half. Tergite VIII with posterior margin evenly rounded apically. Segment IX (spiculum) as in Fig. 144 , its basal apodeme conspicuously strong. Aedeagus ( Fig. 145 ); apical portion of tegmen 1.3 times as long as basal-piece, distinctly bent in lateral view, bluntly pointed apically, its ventral subapical margins less sclerotized and somewhat lobed; median lobe of aedeagus distinctly bilobed apically.

Female. Externally differing from male by simple mesotibiae, lacking apical denticle.

Body length (♂ ♀). 3.6–4.5 mm.

Variation. Body in some specimens nearly unicolourous brown black, only elytra with somewhat paler lateral margins and transverse bands.

Type material. Syntypes: 2 ♀♀ [mounted on the same label], interruptus Lea , TYPE Townsville [p+h] // Formicomus interruptus Lea Queensland TYPE I.15264 [h; “TYPE” red] // S. Aust. Museum specimen [p; orange label] ( SAMA); 1 ♂, Townsville, Qld. Aug 02 F. P. Dodd [p+h] // Co-type [p] // Formicomus interruptus Lea Queensland. Cotype 20632 [h; “Cotype” red] // S. Aust. Museum specimen [p; orange label] ( SAMA).

Additional material. 1 ♂, Qld , Townsville, 29.7.1902, F. P. Dodd leg. ( SAMA) ; 4 specimens, the same data, except: 17.i.1903 ( BMNH, 1 ♂ ZKDC) ; 1 ♂, Qld , 20 km WSW of Eungella, 21°12'S 148°18'E, 350 m, Eucalyptus aff. normantonensis woodland, 4.iii.1983 A.Gillison leg. ( ANIC) .

Differential diagnosis. C. interruptus is externally nearly identical to C. decipiens sp. nov. They can barely be distinguished by external characters, but clearly differ in the morphology of male sternite VII and the aedeagus (cf. Figs 143, 145 and 88, 89 ).

Distribution. Australia (Queensland).

Remarks. Lea (1922) described Formicomus interruptus from three specimens from Townsville collected by F. P. Dodd. The additional specimens examined from Townsville (SAMA, BMNH, ZKDC) are not part of the type series but are topotypic.

Figures

FIGURES 135–145: Chileanthicus insignis sp. nov., male, holotype: 135, body form and punctation of head (top) and elytra (bottom); 136, metafemur; 137, sternite VIII; 138, tergite VIII; 139, segment IX (spiculum); 140, apex of aedeagus in ventral (left) and lateral (right) view; C. interruptus (Lea), male, Townsville (SAMA): 141, body form and punctation of head (top) and elytra (bottom); 142, metafemur; 143, sternite VIII; 144, segment IX (spiculum); 145, apex of aedeagus in ventral (right) and lateral (left) view. Scale (1.0 mm): A, 135, 141; B, 136, 142; (0.5 mm): C, 136; D, 139, 143, 144; (0.2 mm): E, 137; F, 140, 145.

FIGURES 81–89: Chileanthicus communis sp. nov., male, holotype: 81, body form and punctation of head (top) and elytra (bottom); 82, metafemur; 83, sternite VIII; 84, segment IX (spiculum); 85, apical portion of aedeagus in ventral (left) and lateral (right) view; C. decipiens sp. nov., male, holotype: 86, body form and punctation of head (top) and elytra (bottom); 87, metafemur; 88, sternite VIII; 89, aedeagus in ventral (right) and lateral (left) view. Scale (1.0 mm): A, 81, 86; B, 82, 84, 87; (0.2 mm) C, 83, 89; D, 88; E, 85.