Mouth parts of the larva of Chironomus sp. 6b ('paracastaneum') a. Pecten epipharyngis; b. Premandible with broad teeth; c. Antenna; d. Mentum with c1 tooth of type 'broad IIB' e. Ventromentum; f. Mandible of type IIC.
Anal tubule of C. nr. 'paracastaneum' Note tube-like shape.
