Systematic revision of the American taxa belonging to the genera Alloblackburneus Bordat, 2009, and Blackburneus Schmidt, 1913, with description of seven new species (Coleoptera: Scarabaeidae: Aphodiinae) Author Dellacasa, Marco Author Dellacasa, Giovanni Author Gordon, Robert D. text Insecta Mundi 2011 2011-12-16 2011 204 1 52 journal article 10.5281/zenodo.10090539 1942-1354 10090539 Blackburneusargentinensis (Schmidt, 1909) ( Fig. 66-70 ) Aphodius argentinensis Schmidt, 1909a: 101 ; Blackwelder 1944: 212. Aphodius ( Blackburneus ) argentinensis ; Schmidt 1913: 138; Schmidt 1922: 148; Dellacasa 1988: 90. Blackburneus argentinensis ; Skelley etal. 2007: 2. Typelocality . Prov. Santa Fé , Argentina . Type repository. Naturhistoriska Riksmuseet, Stockholm ( type examined). Redescription. Length 4.0- 4.5 mm ; elongate, convex, shiny, glabrous. Pale reddish-brown; juxtasutural interstria of elytra and legs somewhat darker; antennal club testaceous. Head with epistome distinctly gibbous on disc, sparsely and rather irregularly punctured; clypeus feebly sinuate at middle, round at sides, very thinly bordered, edge slightly upturned, laterally with extremely short sparse bristles; genae round, almost imperceptibly ciliate, feebly protruding from the eyes; frontal suture distinctly impressed, raised at each side; front coarsely, densely irregularly punctured mainly on sides. Pronotum moderately transverse, strongly convex, dually punctured; large punctures, six to seven times larger than small ones, irregularly scattered, rather widely lacking on disc; small extremely fine punctures subregularly sparse throughout, somewhat more superficial on disc; lateral margins feebly arcuate, very thinly bordered, edge glabrous; hind angles obtusely round; base slightly bisinuate. Scutellum elongate, somewhat narrowed toward base, with few fine punctureson basal half. Elytra faintly widened, rather finely striate; striae subcrenulate; eighth and ninth striae shortened toward shoulder; interstriae flat or almost flat, nearly imperceptiblysparsely punctured; second interstria wider than first and third ones; fifth interstria broadened at base, therein twice as wide as the sixth. Hind tibiae superior apical spur shorter than first tarsal segment; latter shorter than following three segments combined. Male: frontal suture strongly raised on each side; pronotum somewhat more convex, not narrowed frontward, less densely punctured; foretibiae apicalspur subcylindrical, apically rounded; metasternal platesomewhatmore strongly incavate; aedeagus Fig. 69-70 . Female: frontal suture not or feebly raised on each side; pronotum somewhat less convex, somewhat narrowed frontwardly and more densely punctured; fore tibiae apical spur slender and acuminate; metasternal plate almost flat. Type material. 1 female ( lectotype , herein designated, NHRS ) bearing the following labels: 1) white: Rep. Argentina [printed] / prov. [printed] / Sta. Fé [handwritten] / R. Richter [printed] ; 2) white (handwritten): argenti- / nensis / m.; 3) red (printed): Typus; 4) white (printed): 125; 5) red (printed): Aphodius argentinensis / Schmidt A., 1909 / Lectotypus / Dellacasa M. & G. des., 2002. Other 4 females ( paralectotypes , NHRS ) with the same collecting data as lectotype . Material examined. ARGENTINA : Prov. Buenos Aires , 12 Km E 9 de Julio , 30.XII.1979 , leg. R. E. Woodruff & V. Duthie , cow dung ( 1 ex. , ISEA ) ; Cordoba , Alta Gracia , 10.IV.1967 , leg. L. E. Peña (3 exx., DCGI ) ; Prov. Cordoba , Anizacate , 9.IV.1967 , leg. L. E. Peña & G. Barria ( 1 ex. , CNCI ) ; Prov. Cordoba , Ao. Tegua , 5-9.IV.1967 , leg. L. E. Peña & G. Barria (2 exx., CNCI ) ; Prov. Salta , El Rey Nat. Park , m 1000, Pozo Verde Trail Km 7, 5-15.XII.1987 , leg. S. & J. Peck (malaise-FIT, Yungas forest ) ( 1 ex. , DCGI ) ; Prov. San Luis , 18 Km S Arizona , m 250, 18-23.I.1982 , leg. H. & A. Howden (2 exx., CNCI ) ; BRAZIL : Distrito Federal , Brasilia , m 1100, XII.1998 , leg. N. Dégallier (piège lumineaux) (3exx., DCGI ) ; Goiás , San Antonio de Descobierto , 20.XII.1998 , leg. N. Dégallier (piège lumineaux) ( 1 ex. , DCGI ) ; FRENCH GUIANA : Roura (8 Km SSE), 04 o 40’41”N- 52 o 13’25”W , m 200, 10.VI.1997 , leg. J. Ashe & R. Brooks (flight int. trap) ( 1 ex. , CNCI ) ; PARAGUAY : Dpt. Guaira , Calle Florida , VIII.1993 (4 exx., DCGI ) ; idem , Melgarejo , X.1994 (2 exx., DCGI ) ; URUGUAY : 90 Km SW of Artigas , Pampa de Lavalleja , 27-30.IX.2001 , leg. Z. Linek (2 exx., DCGI ) .