C. "pseudoppositus" Martin Adults of this Australian species have been collected in the Waikato area, and identified on the basis of the COI barcode sequence. It is not certain how close the morphology is to that of Australian material but it is reasonable to assume it will be similar as this is most likely a recent introduction since it was not identified in extensive sampling in the area in the 1960s-1970s.Chironomus alternans b - Martin and Porter 1977; Lentzios and Stocker 1979; Lentzios et al. 1980, Martin and Lee 1981 and 1984, Martin and Cranston 1995.
Chironomus pseudoppositus (manuscript name) - Martin 1974.
Chironomus pseudoppositus (nomen nudum) - Martin 1969b; Cranston and Martin 1989. In Bold BIN: BOLD:AAW3993 Adults: Males: A few characters can be recorded for a male;
Wing length about 3.8 mm., width about 0.8 mm, VR about 1.1.
Thorax, scutellum, etc., dark brown. Legs yellowish, darkened at knees.
Leg proportions (micron):
| Fe
| Ti
| Ta1
| Ta2
| Ta3
| Ta4
| Ta5
| LR
| F/T
| BR
| PI
| 1530
| -
| -
| -
| -
| -
| -
| -9
| -
| -
| PII
| 1530
| -
| -
| -
| -
| -
| -
| -
| -
| -
| PIII
| 1730
| 1730
| -
| -
| -
| -
| -
| -
| 1.0
| -
| Abdominal tergites with dark bands covering about half the segment, arising about 1/4 from anterior margin. This would be slightly lighter than the Australian specimens.Further data from Australian specimens:Head, antennae and mouth parts brown. Frontal tubercles present, length about 21.9 (10-29) micron, about 2.2 times longer than width at base
About 23 (19-25) clypeal setae; clypeal width about 0.6 of antennal pedicel diameter. .
Palpal proportions (micron): 52 : 66 : 199 : 224 : 354; P5/P4 1.5-1.71, P5/P3 1.71-1.95.
Thorax generally brown with purplish brown stripes; thorax pruinose.
Thoracic setae: Achrostichal - abt. 10-17, Dorsocentral 15.9 (11-20), Prealar -5.1 (4-8), Supraalar - 1.5 (1-2); Scutellar - 2 approximate rows, Ant.- 5.8 (2-8) small, Post. - 12.7 (10-14)larger; total scutellar 17.3 (14-22).
Wings with anterior veins hardly darker than posterior, crossvein slightly darkened.
Wing length 3.12 (2.95-3.38) mm, width at crossvein 0.74 (0.68-0.80) mm, VR. 1.03-1.06; Scf on brachiolum 2-3; setae on squamal fringe 24-27.
Leg lengths (microns) and proportions as follows:
| Fe
| Ti
| Ta1
| Ta2
| Ta3
| Ta4
| Ta5
| LR
| F/T
| BR
| PI
| 1258
| 1047
| 1805
| 922
| 746
| 648
| 289
| 1.5-1.8
| 1.14-1.37
| 1.6-2.1
| PII
| 1332
| 1166
| 743
| 405
| 297
| 192
| 143
| 0.58-0.63
| 1.04-1.14
| -
| PIII
| 1484
| 1436
| 1069
| 595
| 463
| 284
| 172
| 0.69-0.73
| 0.96-1.08
| -
| 
Male terminalia of C. 'pseudoppositus'.Male abdomen generally black with a white posterior margin on the anterior segments.
.11.4 (7-16) setae on TIX probably in separate pale areas, 4-5+1 setae at tip of gonstylus which is as in holotype (above).
Superior volsella generally of D-type, but sometimes of E-type, as e to g of Strenzke (1959).
Inferior volsella not forked. Anal point narrowed at base. Gonostylus moderately swollen, narrowing over distal third. Females:
Wing length 3.60 (2.8-4.2) mm; width at cross vein 1.03 (0.96-1.20) mm, VR 1.08-1.11; 3 or 4 SCf on brachioloum.
Head with frontal tubercles of variable length: 29,3 (19-48) micron; about 35.5 (27-55) clypeal setae.
Mean antennal proportions (micron): 198 : 128 : 136 : 132 : 171; AR - 0.31 (0.29-0.32); A5/A1 - 0.96 (0.90-1.00). Mean palpal proportions: 59 : 61 : 208 : 245 : 377; P5/P4 1.83-2.13; P5/P3 1.57-1.83.
Thoracic coloration similar to that of males. Thoracic setae: Acrostichal abt. 15.8 (17-22); Dorsocentral plus Humerals 27.2 (23-35); Prealar 6.2(5-7); Supraalar 1; Scutellum, ant row 11 (9-14), posterior row 13 (11-20), total Scutellars 25 (20-34).
Leg lengths (microns) and proportions as follows:
| Fe
| Ti
| Ta1
| Ta2
| Ta3
| Ta4
| Ta5
| LR
| F/T
| Ta4/Ti
| PI
| 1568
| 1175
| 2310
| 1140
| 925
| 860
| 373
| 1.68-1.82
| 1.23-1.32
| 0.61-0.73
| PII
| 1546
| 1392
| 821
| 416
| 305
| 198
| 149
| 0.56-0.61
| 1.09-1.11
| -
| PIII
| 1668
| 1669
| 1199
| 651
| 511
| 301
| 190
| 0.67-0.72
| 0.98-0.99
| -
| Abdomen relatively dark. Types: Holotype male: Asquith, New South Wales (33.68526°S, 151.11674°E), 20.ii.1963, (leg. J. Martin) (♂2)
Allotype female: Data as for Holotype. (♀3)
Paratypes: 3♂, 5♀, data as for Holotype, but various dates in 1963.
Type material currently in collection of Jon Martin, but will eventually be distributed to the ANIC and other institutions. Found: North Island:
Waikato area (37.802°S, 175.334°E) (I. Hogg) 13.viii.2012. Although classed as a nomen nudum, this species was described and types designated by Martin (unpublished Ph.D. Thesis 1966). [ Return to Index| Go to C. 'pseudoppositus' immatures ] |