A.Yu. Isaev - Key to beetles of Middle Volga region (key to the family Dytiscidae)

A.Yu. Isaev
Key to beetles of Middle Volga region
(Part 1 - Adephaga и Myxophaga)
Ulyanovsk, 2002.
Key to species of predaceous diving beetles (Dytiscidae) - P. 53-67

P. 53

P. 54

P. 55

P. 56

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P. 57

P. 58

P. 59

P. 60

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P. 61

P. 62

P. 63

P. 64

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P. 65

P. 66

P. 67

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