- Pachybrachis abdominalis Say, 1824
- Pachybrachis alacris Fall 1915
- Pachybrachis alticola Fall 1915
- Pachybrachis analis LeConte 1861
- Pachybrachis arizonensis Bowditch 1909
- Pachybrachis atomarius
- Pachybrachis autolycus Fall 1915
- Pachybrachis badius Fall 1915
- Pachybrachis bajulus Suffrian 1852
- Pachybrachis bivittatus Say 1824
- Pachybrachis brevicollis LeConte 1880
- Pachybrachis brevicornis Fall 1915
- Pachybrachis brunneus Bowditch 1909
- Pachybrachis bullatus Fall 1915
- Pachybrachis caelatus LeConte 1858
- Pachybrachis calcaratus Fall 1915
- Pachybrachis calidus Fall 1915
- Pachybrachis californicus Fall 1915
- Pachybrachis carbonarius Haldeman 1849
- Pachybrachis carolinensis Bowditch 1910
- Pachybrachis cephalicus Fall 1915
- Pachybrachis chaoticus Fall 1915
- Pachybrachis circumcinctus Crotch 1874
- Pachybrachis coloradensis Bowditch 1909
- Pachybrachis confederatus Fall 1915
- Pachybrachis conformis Suffrian 1852
- Pachybrachis confusus Bowditch 1909
- Pachybrachis connexus Fall 1915
- Pachybrachis consimilis Fall 1915
- Pachybrachis conspirator Fall 1915
- Pachybrachis contractifrons Fall 1915
- Pachybrachis convictus Fall 1915
- Pachybrachis crassus Bowditch 1909
- Pachybrachis croftus Bowditch 1909
- Pachybrachis cruentus LeConte 1880
- Pachybrachis cylindricus Bowditch 1909
- Pachybrachis delumbis Fall 1915
- Pachybrachis densus Bowditch 1909
- Pachybrachis desertus Fall 1915
- Pachybrachis dilatatus Suffrian 1852
- Pachybrachis discoideus Bowditch 1909
- Pachybrachis diversus Fall 1915
- Pachybrachis donneri Crotch 1874
- Pachybrachis dubiosus LeConte 1880
- Pachybrachis duryi Fall 1915
- Pachybrachis falli Leng 1920
- Pachybrachis femoratus Olivier 1808
- Pachybrachis fortis Fall 1915
- Pachybrachis fractus Fall 1915
- Pachybrachis fuscipes Fall 1915
- Pachybrachis gracilipes Fall 1915
- Pachybrachis haematodes Suffrian 1852
- Pachybrachis hepaticus Melsheimer 1847
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- Pachybrachis hybridus Suffrian 1852
- Pachybrachis illectus Fall 1915
- Pachybrachis immaculatus Jacoby 1889
- Pachybrachis impurus Suffrian 1852
- Pachybrachis infaustus Haldeman 1849
- Pachybrachis insidiosus Fall 1915
- Pachybrachis integratus Fall 1915
- Pachybrachis jacobyi Bowditch 1909
- Pachybrachis lachrymosus Fall 1915
- Pachybrachis laevis Bowditch 1909
- Pachybrachis latithorax Clavareau 1913
- Pachybrachis liebecki Fall 1915
- Pachybrachis litigiosus Suffrian 1852
- Pachybrachis livens LeConte 1858
- Pachybrachis lodingi Bowditch 1909
- Pachybrachis longus Bowditch 1909
- Pachybrachis luctuosus Suffrian 1858
- Pachybrachis luridus Fabricius 1798
- Pachybrachis lustrans LeConte 1880
- Pachybrachis m-nigrum Melsheimer 1847
- Pachybrachis macronychus Fall 1915
- Pachybrachis marginatus Bowditch 1909
- Pachybrachis marginipennis Bowditch 1909
- Pachybrachis marmoratus Jacoby 1889
- Pachybrachis melanostictus Suffrian 1852
- Pachybrachis mellitus Bowditch 1909
- Pachybrachis mercurialis Fall 1915
- Pachybrachis microps Fall 1915
- Pachybrachis minor Bowditch 1909
- Pachybrachis mitis Fall 1915
- Pachybrachis mobilis Fall 1915
- Pachybrachis morosus Haldeman 1849
- Pachybrachis nero Bowditch 1909
- Pachybrachis nigricornis Say 1824
- Pachybrachis nobilis Fall 1915
- Pachybrachis nogalicus Fall 1915
- Pachybrachis notatus Bowditch 1910
- Pachybrachis nubigenus Fall 1915
- Pachybrachis nubilus Bowditch 1909
- Pachybrachis nunenmacheri Fall 1915
- Pachybrachis obfuscatus Fall 1915
- Pachybrachis obsoletus Suffrian 1852
- Pachybrachis osceola Fall 1915
- Pachybrachis othonus Say 1825
- Pachybrachis parvinotatus Fall 1915
- Pachybrachis pawnee Fall 1915
- Pachybrachis peccans Suffrian 1852
- Pachybrachis pectoralis Melsheimer 1847
- Pachybrachis petronius Fall 1915
- Pachybrachis picturatus Germar 1824
- Pachybrachis pinguescens Fall 1915
- Pachybrachis placidus Fall 1915
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- Pachybrachis pluripunctatus Fall 1915
- Pachybrachis postfasciatus Fall 1915
- Pachybrachis praeclarus Weise 1913
- Pachybrachis precarius Fall 1915
- Pachybrachis prosopis Fall 1915
- Pachybrachis proximus Bowditch 1909
- Pachybrachis pulvinatus Suffrian 1852
- Pachybrachis punctatus Bowditch 1909
- Pachybrachis punicus Fall 1915
- Pachybrachis purus Fall 1915
- Pachybrachis pusillus Bowditch 1909
- Pachybrachis quadratus Fall 1915
- Pachybrachis quadrioculatus Fall 1915
- Pachybrachis relictus Fall 1915
- Pachybrachis roboris Fall 1915
- Pachybrachis sanrita Bowditch 1909
- Pachybrachis signatifrons Mannerheim 1843
- Pachybrachis signatus Bowditch 1909
- Pachybrachis snowi Bowditch 1909
- Pachybrachis sonorensis Jacoby 1889
- Pachybrachis spumarius Suffrian 1852
- Pachybrachis stygicus Fall 1915
- Pachybrachis subfasciatus Leconte 1824
- Pachybrachis sublimatus Fall 1915
- Pachybrachis subvittatus LeConte 1880
- Pachybrachis tacitus Fall 1915
- Pachybrachis texanus Bowditch 1909
- Pachybrachis thoracicus Jacoby 1889
- Pachybrachis tridens Melsheimer 1847
- Pachybrachis trinotatus Melsheimer 1847
- Pachybrachis truncatus Bowditch 1909
- Pachybrachis tumidus Bowditch 1909
- Pachybrachis turbidus LeConte 1880
- Pachybrachis turgidicollis Fall 1915
- Pachybrachis tybeensis Fall 1915
- Pachybrachis umbraculatus Suffrian 1852
- Pachybrachis uncinatus Fall 1915
- Pachybrachis uteanus Fall 1915
- Pachybrachis vacillatus Fall 1915
- Pachybrachis varians Bowditch 1909
- Pachybrachis varicolor Suffrian 1852
- Pachybrachis vau Fall 1915
- Pachybrachis vestigialis Fall 1915
- Pachybrachis viduatus Fabricius 1801
- Pachybrachis virgatus LeConte 1880
- Pachybrachis vulnerosus Fall 1915
- Pachybrachis wenzeli Fall 1915
- Pachybrachis wickhami Bowditch 1909
- Pachybrachis xantholucens Fall 1915
- Pachybrachis xanti Crotch 1873
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