Chironomidae indet 2

(By Andreas Plank from 1. April 2008, last modified 19. March 2019)

Note: with some images you can slide through, just click on “prev” or “next” above the image. Below you find old comments.

Characters

  • mentum: 1 median tooth, 6/7 lateral;
  • mandible: 3-1-0-2 (inner-apical-outer-surface) large surface teeth;
  • premandible 2; seta S1 bifid but incised;
  • postoccipital margin: dark brown
  • antenna 5-segments, RO in the lower 3rd of segment 1

Labrum (3rd instar specimen 1):

(Click on the image to slide through the layers)

Mentum (4th instar, specimen 3):

Note the beard

Mentum-divided (3rd instar, specimen 2):

Antenna (3rd instar, specimen 4):

(Click on the image to slide through the layers)

Mandible/Premandible (3rd? instar, specimen 2):

(Click on the image to slide through the layers)

Old Comments

#1

Andreas Plank wrote at Wednesday, 2. April 2008 18:50:31

Hi,
this specimen is similar to Acricotopus indet 1, but the mentum is quite different. Maybe an other Acricotopus... confused
Andreas

#2

HQ Tang wrote at Tuesday, 15. April 2008 11:23:55 (GMT)

the first glance give me an appearrance of a memeber of Corynocera, but the premandible reject my opinion. I agree with your comment, it may be another Acricotopus. Note that Zhang and Wang (2004) published 2 new species in the genus Acricotopus near the Tibet plataeu.