Key to the Subfamily Tanypodinae*

Walker, I.R. (1988). Late-Quaternary Palaeoecology of Chironomidae (Insecta: Diptera) in Lake Sediments from British Columbia. Ph.D. thesis, Simon Fraser University, Burnaby, B.C.

1. • a) Dorsomental teeth present; head capsule broad; 1st antennal segment rather short and broad (Fig. 1, 2, 3 )
     .............................................................................2.
     
     
   • b) Dorsomental teeth absent; head capsule elongate; 1st antennal segment very long and slender (Fig. 4, 6)
     .............................................................................4.
   
   
   
   
2. • a) Ligula teeth all about the same length, weakly pigmented (Fig. 2, 3)
     .............................................................................3.
     
     
   • b) Ligula concave with 5 darkly pigmented teeth (4 teeth in 1st instars) (Fig. 1)
     .............................................................................Procladius
   
   
   
   
3. • a) Ligula with 5 teeth (Fig. 2).
     .............................................................................Tanypus type
     
     
   • b) Ligula with 4 teeth (Fig. 3)
     .............................................................................Derotanypus
   
   
   
   
4. • a) Median tooth of ligula much longer than adjacent teeth (Fig. 4).
     .............................................................................Labrundinia (& Nilotanypus)
     
     
   • b) Median tooth of ligula about as long as adjacent teeth, or shorter, forming a straight or weakly concave margin (Fig. 6).
     .............................................................................5.
   
   
   
   
5. • a) Head capsule with a coarsely granular surface (Fig. 5).
     .............................................................................Guttipelopia
     
     
   • b) Head capsule surface not coarsely granular (Fig. 6).
     .............................................................................Other Pentaneurini
   
   
   
   

Fig. 1. Procladius.

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Fig. 2. Tanypus.

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Fig. 3. Derotanypus.

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Fig. 4. Labrundinia.

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Fig. 5. Guttipelopia.

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Fig. 6. Tribe Pentaneurini.

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