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Family Ceratopogonidae

Key to Ceratopogonidae Larvae. This key covers larvae of the 5 Genera of Ceratopogonidae that we have collected in North Dakota rivers and streams. This key aids by providing simple features you can look for to identify your specimen. After using the key, confirm the identity of your specimen by reading the Genus page.

 
Genus Atrichopogon - Body has obvious dorsal extensions (Fig. 1). Dorsal extensions are about as long as the individual segments (Fig. 2). Overall body as Figure 3.

Atrichopogon Extensions Atrichopogon Extension Length Atrichopogon body
 
Genus Bezzia - Head is long and narrow over twice as long as wide (Fig. 4). The collar just behind the head has a uniform width (Fig. 5). Overall body as Figure 6.

Bezzia head Bezzia collar Bezzia body
 
Genus Culicoides - Head is less than twice as long as it is narrow (Fig. 7). The collar just behind the head on the ventral side has a uniform width (Fig. 8). Overall body as Figure 9.

Culicoides head Culicoides collar Culicoides body
 
Genus Probezzia - Head is less than twice as long as it is narrow (Fig. 10). The collar just behind the head on the ventral side has a semicircular extension (Black arrow, Fig. 11). At the tip of the head is a small projection (Fig. 11, white arrow). Overall body as Figure 12.

Probezzia head Probezzia collar Probezzia body
 
Genus Sphaeromias - Head is less than twice as long as it is narrow (Fig. 13). The collar just behind the head on the ventral side has a triangular extension (Fig. 14). Overall body as Figure 15.

Sphaeromias head Sphaeromias collar Sphaeromias body
 

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