Blackburneussaylorea (Robinson, 1940)

Dellacasa, Marco, Dellacasa, Giovanni & Gordon, Robert D., 2011, 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), Insecta Mundi 2011 (204), pp. 1-52 : 29-30

Blackburneussaylorea (Robinson, 1940)

( Fig. 127-134 )

Aphodiussaylorea Robinson, 1940: 147 .

Aphodius (Koshantschikovius) saylorea ; Dellacasa 1988: 241.

Blackburneus saylorea ; Gordonand Skelley 2007: 361; Skelley etal. 2007: 2.

Typelocality. Patagonia, Santa Clara, Arizona [ U.S.A.].

Type repository. United States National Museum, Washington (type not examined).

Redescription. Length 3.0- 3.5 mm; shortly oblong, convex, moderately shiny, glabrous. Blackish or piceous; clypeal margin and pronotal sides more or less broadly reddish ( Fig. 131 ); sometimes elytra brown ( Fig. 130 ) rarely orange ( Fig. 128 ), more rarely widely blackish with shoulder and juxtasutural interstria orange ( Fig. 129 ); legs brownish yellow; antennalclub piceous. Head with epistome feebly convex, evenly, closely regularly punctured throughout; clypeus slightly sinuate at middle, round at sides, very thinly bordered, edge somewhatupturned, glabrous; genae round, nearly imperceptibly ciliate, not protruding from the eyes; frontal suture finely impressed; front somewhat more sparsely irregularly punctured than epistome. Pronotum very convex, rather finely, not closely, somewhat irregularly punctured throughout; punctation graduallycoarser, denser and larger toward sides; lateral margins arcuate, distinctly bordered, edge glabrous; hind angles widely obtusely round; base bisinuate. Scutellum flat, distinctly punctured on basal half. Elytra strongly convex, shortly oval, rather deeply striate; striae distinctly punctured, feebly crenulate; interstriae slightly convex, finely microreticulate, thus rather dull, finely near biseriately punctured. Hind tibiae superior apical spur slightly shorter than first tarsal segment; latter as long as following three segments combined. Male: metasternal plate with median longitudinalgroove foveolate and somewhat more deep; aedeagus Fig. 132-133 . Female: metasternal plate with median longitudinal groove weakly foveolate and somewhat more superficial.

Material examined. MEXICO: Chiapas: 17 exx. ( DCGI) ; Chihuahua: 19 exx. ( DCGI) ; Distrito Federal: 3 exx. ( DCGI) ; Durango: 36 exx. ( DCGI, FSCA) ; Guanajuato: 1 ex. ( FSCA) ; Guerrero: 195 exx. ( DCGI, MSNT) ; Hidalgo: 2 exx. ( FMNH, USNM) ; Jalisco: 73 exx. ( DCGI, MSNT) ; México: 15 exx. ( CNCI, DCGI) ; Michoacán: 102 exx. ( DCGI, MSNT) ; Morelos: 1 ( USNM) ; Nayarit: 13 exx. ( DCGI, MSNT) ; Nuevo León: 8 exx. ( DCGI) ; Oaxaca: 617 exx. ( CNCI, DCGI, MSNT) ; Puebla: 1 ex. ( FMNH) ; Queretaro: 9 exx. ( CNCI, DCGI, MSNT) ; San Luis Potosí: 1 ex. ( MSNT) ; Sinaloa: 17 exx. ( DCGI) ; Sonora: 2 exx. ( FSCA) ; Veracruz: 103 exx. ( DCGI, FMNH, MSNT) ; Zacatecas: 14 exx. ( DCGI) . U.S.A.: Arizona: 1 ex. ( FSCA) .

Distribution. U.S.A. (Arizona); Mexico (Chiapas, Chihuahua, Distrito Federal, Durango, Guerrero, Hidalgo, Jalisco, México, Michoacán, Morelos, Nayarit, Nuevo León, Oaxaca, Puebla, Queretaro, Sinaloa, Sonora, Veracruz, Zacatecas).

Bionomics. Late Spring and Summer coprophagous species, usually found in cow and horse dung.

Figures

Figures 127-139. Blackburneus saylorea (Robinson, 1940) (Tuxpan, Estado de Michoacán, Mexico). 127) Habitus (morphological details). 128-131) Habitus (length ideogram and colour variations). 132-133) Aedeagus (dorsal and lateral view). 134) Epipharynx. Blackburneus stercorosus (Melsheimer, 1844) (Basye, Virginia, U.S.A.). 135) Epipharynx. 136-137) Aedeagus (dorsal and lateral view). 138-139) Habitus (length ideogram and morphological details).