Diamesinae indet 4
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- mentum: 1 middle prominent very pale, 5-6 lateral, submental setation below the outermost tooth;
- premandible: 4(5?) teeth;
- mandible: 6-1-0-0 (inner-apical-dorsal-surface), note: the 6 inner teeth have the pattern: 4 normal + 1 small + 1 normal, a lot of seta interna;
- antenna: 5 segments;
- 3rd? instar
Head 1 (3rd? instar):
Head 2 (3rd? instar):
The median teeth of mentum is very prominent, also the mental extesion is well developed. I can not see clearly whether or not the middle teeth is lower than other or not, it looks like Diamesa bertrami or Arctodiamesa sp? I am not sure, the metum is not very clear, but it looks like an IV instar larva.