Pachybrachis saguaro, Barney, 2021

Barney, Robert J., 2021, Definition and Revision of the cylindricus Species-Group of North American Pachybrachis Chevrolat (Coleoptera: Chrysomelidae: Cryptocephalinae), Including Descriptions of Six New Species, The Coleopterists Bulletin 75 (4), pp. 723-748 : 724

4. Median lobe with large preorificial length (PRL), T extended with rear-flexed side sub-termini, appearing as three-pronged T ( Fig. 4 ) …............ 4. P. SAgUARo , new species

4′. PRLregular,Twithoutrear-flexedsub-termini…5

5. Median lobe keel smooth, rounded without fissura ( Figs. 5G , 6G ) …............................. 6

5′. Median lobe keel sharp-edged or with fissura … 7

Figures

Fig. 4. Pachybrachis saguaro, new species, Pima Co., Arizona, holotype. A) Dorsal habitus, B) Lateral habitus, C) Face, D) Pygidium, E) Median lobe of aedeagus, lateral view, F) Median lobe of aedeagus, en-face view, G) Median lobe of aedeagus, sub view.

Fig. 5. Pachybrachis hurricane, new species, Washington Co., Utah, holotype.A) Dorsal habitus, B) Lateral habitus, C) Face, D) Pygidium, E) Median lobe of aedeagus, lateral view, F) Median lobe of aedeagus, en-face view, G) Median lobe of aedeagus, sub view.

Fig. 6. Pachybrachis texasensis, new species, Grayson Co., Texas, holotype.A) Dorsal habitus, B) Lateral habitus, C) Face, D) Pygidium, E) Median lobe of aedeagus, lateral view, F) Median lobe of aedeagus, en-face view, G) Median lobe of aedeagus, sub view.