Helminthoglypta arrosa, also known as the bronze shoulderband snail, is a North American species of air-breathing land snail. It is found in northern and central California, and is endemic to the state.
Subspecies Recognized subspecies include: Helminthoglypta arrosa arrosa (W. G. Binney, 1858) Helminthoglypta arrosa humboldtica S. S. Berry, 1938 Helminthoglypta arrosa marinensis Pilsbry, 1926 Helminthoglypta arrosa monticola B. Roth, 1982 Helminthoglypta arrosa pomoensis A. G. Smith, 1938 Synonyms Helminthoglypta arrosa mailliardi Pilsbry, 1926: synonym of Helminthoglypta mailliardi Pilsbry, 1926 (original rank) Helminthoglypta arrosa mattolensis A. G. Smith, 1938: synonym of Helminthoglypta expansilabris mattolensis A. G. Smith, 1938 Helminthoglypta arrosa williamsi A. G. Smith, 1938: synonym of Helminthoglypta stiversiana williamsi A. G. Smith, 1938
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