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Genus Blattella

BG2896 E7480 - Blattella asahinai Unknown Blatella - Blattella vaga ? - Blattella asahinai Blattella asahinai German Cockroach nymph? - Blattella germanica German Cockroach nymph? - Blattella germanica What is this!? - Blattella germanica Field Cockroach - Blattella vaga
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Blattodea (Cockroaches and Termites)
Superfamily Blaberoidea
Family Ectobiidae
Subfamily Blattellinae
Genus Blattella
Explanation of Names
Blattella Caudell 1903
'little Blatta'
Numbers
3 spp. (all adventive) in our area, >50 spp. total(1)
Identification
among our spp.,
The German Cockroach (B. germanica) is by far the most common:
male
female
The Asian Cockroach (B. asahinai) has a more slender body and more grey tones to its wing color. The pronotum colors more contrasting than in B. germanica, and the lateral edges of the abdomen are pale, although this is often obscured by the wings:

The Field Cockroach (B. vaga) is not afraid of light and flies readily, unlike the German Cockroach. They look very similar, but a view of the face will reveal a dark area between the eyes and mouthparts that is not present in the German Cockroach: