Asian Chironomus: C. palpalis

C. palpalis Johannsen 1932

Sublette and Sublette (1973) listed this as a species of Chironomus.

Adult

Male:
Johannsen's original 1937 description of adults:
Yellowish or perhaps greenish species; thoracic vittae ferruginous; frontal tubercles missing; AR over 3.5; palps missing.
Abdominal segments with transverse brown fascia, final two segments almost wholly pale brown, hypopygium yellowish.
Genitalia briefly described as: Superior volsella short and stout, anal point (as spur of ninth segment) produced beyond the end of the inferior volsella, which is rounded and enlarged at the end with recurved hairs; superior volsella short and stout (illustrated as S-type of Strenzke 1959), barely reaching the base of the long, relatively narrow gonostyle which has 4 stiff setae near tip.
Female:
Only briefly mentioned in original description as having a six segmented antenna with intermediate segments flask-shaped, with necks as long as the bulbous part. Crossvein of wing slightly darkened.

Pupa: Integument moderately pale, length about 7-8 mm. Caudolateral spur of segment VIII with only a single spine (see figure above).

Illustrations of parts of the immatures of C. palpalis by Lenz 1937.

Larva: a medium sized plumosus-type larva, about 13 mm long; long ventral tubules and long lateral tubule on segment 10; very long anal tubules (see figure above).

Found: Type locality - Tjurup and L. Ranua, Sumatra.

In lake at depth of 45 m.

Larva and pupa described by Lenz 1937 from material collected by Johannsen.

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