The Predaceous Diving Beetles (Coleoptera: Adephaga: Dytiscidae) from the Miradores Lagoon, Veracruz, Mexico Author Arce-Pérez, Roberto Author Novelo-Gutiérrez, Rodolfo text The Coleopterists Bulletin 2021 2021-12-31 75 4 815 831 http://dx.doi.org/10.1649/0010-065x-75.4.815 journal article 10.1649/0010-065X-75.4.815 1938-4394 13251693 Desmopachria circularis Sharp, 1882 Distribution in MeXico : Hidalgo , Michoacán , Veracruz (Arce-PÉrez and Roughley 1999). Collection Dates: 28. III .97 ( 5 specimens ) , 30.IV.97 ( 22 specimens ), 18. V .97 ( 10 specimens ) , 26. VI .97 ( 5 specimens ) , 30. VII .97 ( 36 specimens ) , 28. VIII .97 ( 30 specimens ) , 21.IX.97 ( 66 specimens ), Figs. 18–28. Morphological structures of Dytiscidae . 18) Middle part of prosternum and prosternal process on the same plane ( Laccophilinae , Copelatinae , Colymbetinae , Cybistrinae , Dytiscinae ) (a: prosternal process); 19) Middle part of prosternum and prosternal process not on the same plane, prosternal process at a lower level ( Hydroporinae ) (a: prosternal process); 20) Apical half of median lobe of Celina slossoni ; 21) Apical half of the median lobe of Celina angustata ; 22) Metanepisternum (a) reaching mesocoxal cavity; 23) Metanepisternum (a) not reaching mesocoxal cavity; 24) Metacoxal processes apically broad and trilobite in Hydrovatini (a: lateral lobes; b: middle lobe); 25–26) Parameres in lateral and dorsal view of Hydrovatus youngi ; 27–28) Parameres in lateral and dorsal view of Hydrovatus davidis . Figs. 18, 19, 22–24 taken from Arce-PÉrez and Roughley (1999); Figs. 20, 21 from Young (1979) ; Figs. 25–28 from Biström (1996) . 30.X.97 ( 27 specimens ), 16.XI.97 ( 30 specimens ), 7.XII.97 ( 27 specimens ), 11.I.98 ( 26 specimens ), 22.II.98 ( 5 specimens ).