Onthophagus pexatus
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publication ID |
https://doi.org/ 10.3853/j.2201-4349.74.2022.1821 |
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publication LSID |
lsid:zoobank.org:pub:364EB32F-A79D-41E4-BFCF-F28142C2D51B |
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persistent identifier |
https://treatment.plazi.org/id/424B87F8-EC58-506F-FEDB-B1A1FAE4F8C1 |
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treatment provided by |
Felipe |
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scientific name |
Onthophagus pexatus |
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Key to species of the Onthophagus pexatus View in CoL species-group in New South Wales
1 Pronotal disc with sparser punctures, separated by 1–2 diameters, with flat interspaces ( Figs 7 View Figures 5–8 , 12 View Figures 11, 12 ); sides of pronotum with smooth glabrous margination ( Fig. 12 View Figures 11, 12 ); pygidium distinctly convex; male and female often with low ridge or pair of ridges at posterior of vertex ( Figs 19–22 View Figures 17–20 View Figures 21–24 ); major male protibial setal tuft broader, diffuse, and 4th lateral tooth in basal half of tibia ( Figs 32–33 View Figures 30–34 ); metafemoral venter more sparsely and shallowly punctured ( Figs 27–28 View Figures 25–29 ); pygidial setae longer, thinner; aedeagi with elongated but strongly reflexed parameres, downcurved at tip in lateral view ( Figs 48 View Figures 42–48 , 50–52 View Figures 49, 50 View Figures 51–53 ) ..................................................................................................... 2
—— Pronotal disc densely punctured, punctures separated by narrow ridges, or at least interspaces less than puncture diameters in width ( Figs 9 View Figures 9, 10 , 11 View Figures 11, 12 ); sides of pronotum crenulate due to row of punctures with short curved setae ( Fig. 11 View Figures 11, 12 ); pygidium flat or almost so; male and female vertex smooth, without ridges ( Figs 13–18 View Figures 13–16 View Figures 17–20 , 23–24 View Figures 21–24 ); major male protibial setal tuft narrower, penicilliform, and 4th lateral tooth at half way or in apical half of tibia ( Figs 30–31, 34 View Figures 30–34 ); metafemoral venter more densely and deeply punctured ( Figs 25–26, 29 View Figures 25–29 ); pygidial setae shorter, thicker; aedeagi with short “crested” parameres, beaked at midpoint of inner edge ( Figs 46–47 View Figures 42–48 , 49 View Figures 49, 50 ) ................................................................................... 3
2(1) Basal half of head coarsely punctured and microsculptured, dull, but with contrasting shiny ridges ( Figs 19–20 View Figures 17–20 ); elytral setae placed on shiny granules (coastal species) ............................................................. O. nammuldi View in CoL
—— Basal half of head shallowly and sparsely punctured, with duller ridges ( Figs 21–22 View Figures 21–24 ); elytral setae set in punctures but anterior edges of some punctures at base of elytra may be shiny and slightly raised (mostly inland species) ....................................................................... O. pexatus View in CoL
3(1) Fully winged, wings longer than elytra, with apices folded; elytra more quadrate, with prominent humeri and preapical swelling; pronotal punctures denser, partly confluent ............................................................................... 4
—— Brachypterous, wings scale-like, about half length of elytra ( Fig. 35 View Figures 35–36 ); elytra rounded at sides without prominent humeri or preapical swelling ( Figs 1–2 View Figures 1–4 ); pronotal punctures not confluent (ventral surface of metafemora strongly punctured but smooth and mostly shiny) ............................................................................................. O. bulga View in CoL sp. nov.
4(3) Metafemoral ventral surface rough, some punctures edged by short ridges, distal half dull strongly microreticulate ( Fig. 26 View Figures 25–29 ); elytral intervals without small elevated shiny tubercles and without shiny area at apex of 5th interval; setae longer; pronotum usually longitudinally depressed ............................................................................... O. longipes View in CoL
—— Metafemoral ventral surface smooth and shiny, with weak microreticulation on posteroapical quarter ( Fig. 28 View Figures 25–29 ); elytral intervals with small elevated shiny tubercles at bases of setae, forming an irregular shiny area at apex of 5th interval; setae shorter; pronotum not longitudinally depressed ................................................................... O. squalidus View in CoL
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