Chilostigma is a genus of caddisflies in the family Limnephilidae

Limnephilidae

Limnephilidae is a family of caddisflies with about 100 genera. They belong to the main lineage of case-constructing caddisflies, the Integripalpia or tube-case caddisflies. The Limnephilidae is one of the most species-rich Trichoptera families of northern temperate regions, but only a few are...

. All of its members are found in Scandinavia and Finland, apart from Chilostigma itascae, which has only been recorded from Nicollet Creek in the Mississippi River

Mississippi River

The Mississippi River is the largest river system in North America. Flowing entirely in the United States, this river rises in western Minnesota and meanders slowly southwards for to the Mississippi River Delta at the Gulf of Mexico. With its many tributaries, the Mississippi's watershed drains...

's headwaters of Itasca State Park

Itasca State Park

Itasca State Park is a state park of Minnesota, United States, and contains the headwaters of the Mississippi River. The park spans of northern Minnesota, and is located about north of Park Rapids, Minnesota and from Bagley, Minnesota...

, Minnesota

Minnesota

Minnesota is a U.S. state located in the Midwestern United States. The twelfth largest state of the U.S., it is the twenty-first most populous, with 5.3 million residents. Minnesota was carved out of the eastern half of the Minnesota Territory and admitted to the Union as the thirty-second state...

, and Chilostigma sieboldi, which is known from both European localities and Hokkaido

Hokkaido

, formerly known as Ezo, Yezo, Yeso, or Yesso, is Japan's second largest island; it is also the largest and northernmost of Japan's 47 prefectural-level subdivisions. The Tsugaru Strait separates Hokkaido from Honshu, although the two islands are connected by the underwater railway Seikan Tunnel...

 in Japan. Other North American species were formerly placed in this genus.

The four known species are:

• Chilostigma itascae
  Chilostigma itascae
  Chilostigma itascae, also known as the headwaters chilostigman or Headwaters Chilostigman Caddisfly, is a species of caddisfly in the family Limnephilidae. It is known only from mile-long Nicollet Creek in the Mississippi River's headwaters in Itasca State Park, Minnesota...
  
  Wiggins 1975
• Chilostigma ostracoderma Bradley 1924
• Chilostigma sieboldi McLachlan 1876
• Chilostigma pumilium (Hochstetter)