Freeman's original description:
Thorax of a yolky colour, dull with prctically no pruinosity; legs whitish, especially on tibiae, tarsal segments black at joints; abdomen without dark markings but quite strongly pruinose at incisures and on segments 5 and 7; anal point of male narrow in side view.
The white legs with dark marked tarsi and the pale abdomen make this species easily recognized: the hypopygium is also characteristic. Wing length - 2.5-3.0 mm.
Male. - Head, mouthparts, and antennae yellowish brown, plumes paler, frontal tubercles present, A.R. abot 4.5.  Thorax a dull reddish yellow, yolky colour, very slightly pruinose near the front; sholders and immediate areas slightly tinged with greenish; dorsocentral bristles only present in in posterior half of thorax. Legs with femora very pale green, tibiae and tarsi whitish, the tarsi have definite black markings across the joints between segments; anterior tarsi not bearded, LR about 1.8.  Wings pale, crossvein darkened.  Abdomen yellowish green, lacking definite darkmarkings; incisures and segments 5 and 7 with quite strong pruinosity; hypopygium with anal point narrow at base, curved and finger-like in lateral aspect; appendage 2 (IVo) short and stout, styles broad at base and rather sharply narrowed at apex.

Female. - Resembles male; sensory hairs on apical antennal segment longer than usual.

Further information from a Paratype male from Mafulu, Papua New Guinea:

Cephalic tubercles about 30 µm; 14 clypeal setae
Palpal proportions (segs 2-5 (µm)) 60 : 170 : 200 : 140 (shrivelled).
Thoracic setae: 6-7 dorsocentral; prealar 4; others not evident.
Leg lengths (micron) and proportions:
Male 
Fe
Ti
Ta1
Ta2
Ta3
Ta4
Ta5
LR
F/T
BR
PI
1220
1050
1120
955
840
770
350
1.60
1.16
no beard
PII
1305
1130
760
395
280
190
140
0.67
1.15
 
PIII
1435
1445
1130
610
465
290
160
0.78
0.99
 

9 setae in individual pale spots on TIX.  Setae on Inferior volsella simple.


Superior volsella and Inferior volsella (left) and lateral view of anal point of paratype male of C. vitellinus

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Revised: 3 April 2023
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