Blackburneus guatemalensis (Bates, 1887)

Blackburneus guatemalensis (Bates, 1887)

( Fig. 99-105 View Figures 94-105 )

Aphodius guatemalensis Bates, 1887: 88 ; Blackwelder 1944: 212.

Aphodius guatemalensis var. scotinus Bates, 1887: 89 ; Blackwelder 1944: 212.

Aphodius guatemalensis var. chiriquinus Bates, 1887: 89 ; Blackwelder 1944: 212.

Aphodius ( Emadiellus) guatemalensis ; Schmidt 1913: 138; Dellacasa 1988: 137.

Aphodius ( Emadiellus) guatemalensis var. scotinus ; Schmidt 1913: 138.

Aphodius ( Emadiellus) guatemalensis ab. scotinus; Dellacasa 1988: 185.

Aphodius ( Emadiellus) guatemalensis var. chiriquinus ; Schmidt 1913: 138.

Aphodius (Emadiellus) guatemalensis ab. chiriquinus; Dellacasa 1988: 108.

Aphodius ( Gonaphodiellus) striatipennis Petrovitz, 1962: 111 ; Skelley et al. 2007: 2 (as synonym of A. guatemalensis ).

Blackburneus guatemalensis ; Dellacasa et al. 2002: 193; Skelley et al. 2007: 2.

Blackburneus guatemalensis ab. scotinus; Dellacasa et al. 2002: 197.

Blackburneus guatemalensis ab. chiriquinus; Dellacasa et al. 2002: 200.

Typelocality. Quezaltenango, Guatemala.

Type repository. Natural History Museum, London ( type examined).

Redescription. Length 3.0-4.0 mm; oblong, moderately convex, shiny, glabrous. Piceous; head shadowy reddish on each side, pronotum reddish on front margin, elytra brownish, at base with several yellowish strips more orless elongate, shadowy reddish on humeral callus and with a preapical smallyellowish spot ( Fig. 104 View Figures 94-105 ); sometimes blackish, front angles of pronotum and elytral humeral callus testaceous ( Fig. 103 View Figures 94-105 ); or testaceous with disc of pronotum, sides and apex of elytra shadowy brownish ( Fig. 102 View Figures 94-105 ); legs reddish; antennal club brownish. Head with epistome feebly convex, regularly, rather finely, evenly, not closely punctured, punctation somewhat denser and coarser laterally; clypeus subsinuate at middle, round at sides, thinly bordered, edge anteriorlyfaintly upturned; genae round, very shortly ciliate, not protruding fromthe eyes; frontalsuture finely impressed; frontregularly andcoarselypuncturedasepistome. Pronotum transverse, moderately convex, rather sparsely and somewhat irregularly punctured, punctation somewhat denserandcoarseron sides, finerandsuperficialon disc; lateral marginsalmost subparallel, thinly bordered, edge glabrous; hind angles obtuse; base feebly bisinuate. Scutellum elongate, superficially microreticulate, with traces of lateral grooves, sparsely and superficially punctured. Elytra oval, moderately convex, notdenticulateatshoulder, finely striate; striaedistinctly punctured, subcrenulate; interstriae flat, smooth, sparsely very finely and irregularly punctured. Hind tibiae superior apical spur distinctly shorter than first tarsal segment; latter somewhat longer than following three segments combined. Male: metasternal plate distinctly concave; aedeagus Fig. 100-101 View Figures 94-105 . Female: metasternal plate nearly flat.

Material examined. COSTA RICA: 19 exx. ( CNCI, DCGI, FSCA, HCGN, MHNG) ; EL SALVADOR: 7 exx. ( DCGI, USNM) ; GUATEMALA: 4 exx. ( DCGI, NYSM, USNM) ; HONDURAS: 2 exx. ( DCGI) ; MEXICO: Chiapas: 213 exx. ( CNCI, DCGI, FSCA, MSNT) ; Colima: 8 exx. ( DCGI, RHTC) ; Distrito Federal: 1 ex. ( NYSM) ; Durango: 5 exx. ( CSCA, NYSM) ; Hidalgo: 1 ex. ( USNM) ; Jalisco: 6 exx. ( CNCI, DCGI) ; México: 4 exx. ( CNCI, DCGI, USNM) ; Michoacán: 66 exx. ( DCGI, MSNT, USNM) ; Morelos: 1 ex. ( DCGI) ; Oaxaca: 99 exx. ( BCBG, CNCI, DCGI, MSNT, NYSM) ; Queretaro: 12 exx. ( CNCI, MSNT) ; San Luis Potosí: 3 exx. ( CNCI, RHTC) ; Veracruz: 3 exx. ( CNCI, DCGI) ; PANAMA: 198 exx. ( CNCI, DCGI, EMEB, FSCA) .

Distribution. Costa Rica, El Salvador, Guatemala, Honduras, Mexico ( Chiapas, Colima, Distrito Federal, Durango, Guerrero, Hidalgo, Jalisco, México, Michoacán, Morelos, Oaxaca, Queretaro, San Luis Potosí, Veracruz), Panama.

Bionomics. Adults are active all year round and are general surface dung feeders.