Pupal cephalic tubercles and caudolateral spur of C. species 12
Note the multiple spines of the spur are compressed to a point as in other species such as C. forsythi and C. novaezelandiae.


Mouth parts of the larva of Chironomus species 12
a. Pecten epipharyngis with uneven teeth;  b. Mentum of Ty.II and central trifid tooth of Ty.IIA;  c. Ventromentum;   d. Antenna;  e. Mandible of TyIIB.

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