C. 'queenslandicus' manuscript name

Adult


Male terminalia of C. 'queenslandicus'.
Note the distinctive short, hairy superior volsella (right).

Male:
Face, antennae, palps, brown.  Frontal tubercles present.  AR about 2.84 - 3.1.
Palp proportions (segs 2-5) (micron) 40 ; 170 ; 165+ : 250.  Clypeal setae - 22.
Thorax green, stripes reddish brown with a dark spot at the posterior end of the lateral stripes.
Thoracic setae: Achrostichal - 16, Dorsolateral 11-13, Prealar - abt 4, Scutellar - 2 approximate rows, Ant. - 10, Post. - 12.
Wings pale, halteres greenish.  Wing length 3.20 mm; wing width 0.83 mm; VR 1.11.
Legs pale.  Anterior basitarsus not bearded.  Ant LR = 1.76-1.80;  F/T = 1.43;  Ant Ta4 longer than Ta3.
Leg proportions (micron):

 
Fe
Ti
Ta1
Ta2
Ta3
PI
1320
920
1620
850
670
PII
1310
1075
720
405
245
PIII
1415
1330
1050
565
400
 
Ta4
Ta5
LR
F/T
BR
PI
710
280
1.76-1.80
1.43
1.73
PII
180
135
0.66
1.22
-
PIII
270
170
0.79
1.06
-

Abdomen dark, slightly paler at posterior of segments; about 9 setae medially on 9th tergite.
Male terminalia distinctive due to short hairy superior volsella (SV), rather like that of Xenochironomus, and therefore does not fit any of Strenzke's types.  This appendage appears to have an extensive membranous region which can fold rather differently during slide-mounting and so lead to quite variable appearance of the SV.  Setae of inferior volsellae unbranched.  Anal point broad, also as in Xenochironomus; styles only slightly tapered at the ends.

Female:
Wing length: 3.26 mm.  Wing width abt 0.85-0.86 mm.  VR 0.87-0.90.  Abt 22 setae on squamal fringe.
Antennal segments (µm) (2): 158 : 118 : 118 : 103 : 229.  Frontal tubercles: about 18 - 38 µm long, 10 - 13 µm wide.
Palps (µm) (2): 39 : 41 : 157 : 212 : 307.  Clypeal setae - abt 18-20.
Thoracic setae:  Achrostichal - abt. 17, Dorsolateral 18-19, Prealar - abt 3-4, Scutellar - 2 approximate rows, Ant.- 9, Post. - 13.

Leg proportions (microns) (2):
 
Fe
Ti
Ta1
Ta2
Ta3
PI
1268
907
1667
838
690
PII
1271
1098
692
341
240
PIII
1385
1318
1044
522
395
 
Ta4
Ta5
LR
F/T
Ta4/Ti
PI
870
345
1.77-1.90
1.39-1.40
0.95-0.96
PII
168
126
0.50-0.62
1.14-1.18
0.14-0.16
PIII
247
161
0.79
1.05
0.19-0.23

Fore Ta4 longer than Ta3 and Ta5, about same length as Ta2.BR 2.0-2.6.


Female genitalia of C. 'queenslandicus'.

About 7 setae on Gonopophysis VIII, 2-3 on Gonopophysis IX.

TypesHolotype male: 4 km n. Fernvale, Queensland (27.43°S, 152.65°E), AQ.19.1, 8.vi.1968 (leg. Jon Martin) reared male #1 with pupal and larval exuviae, slide mounted.
Allotype female: same data as Holotype male, reared female #1, with pupal and larval exuviae, slide mounted.
Paratypes: reared adult males and females, larval bodies with chromosome spreads, all slide mounted.
Holotype male, allotype female and paratypes will be lodged in the Australian National Insect Collection.

Found: New South Wales - ¿Lake Ainsworth.
            Queensland - 4 Km n. Fernvale; North Stradbroke Island.

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Modified: 7 September 2020
Access: Unrestricted
Copyright © 2005-2020, Jon Martin.