Initially attributed to Atchley and Martin, but later corrected to just Martin as the original Atchley and Martin (1971) paper was not a valid description.Chironomus alternans type I - Edward (1964)
Chironomus alternans C - Martin (1961)In BOLD Bin: BOLD:AAJ4272 
Illustrations of the pupal exuvia and parts of the hypopygium of C. cloacalis
Fig. 12, Dorsum of pupal exuvia; Figs. 13-16, Variation of the superior volsella in the type series;
Fig. 17, Lectotype male genitalia.
From Martin (1971a).Adult
Male:
Wing length about 3.76 (2.66-4.60) mm, width 0.91 (0.76-1.10). SCf on brachiolum 3 (2-5). VR about 1.02.
Head antennae and mouth parts brown; thorax greenish grey; stripes, postnotum, sternopleuron and pedicel of antennae dark brown.
AR 3.56 (3.24-4.24). Palpal proportions (segments 2-5) (microns) 60 ; 230 : 265 : 365. Length frontal tubercles 29 (18-44) micron. Clypeus moderately broad, 0.75 times width of antennal pedicel; 23 (11-38) clypeal setae.
Pronotum broad, apically tapered, then abruptly widened at the apex, anteriorly with a broad notch, mesonotum with a scarcely discernible median tubercle. Dorsocentral setae about 14 in two rows, about 4 prealar setae, 2 supra-alars. Scutelleum with two rows of setae, more in the posterior row, in total 24 (15-40)
Legs yellowish brown without definite markings, tarsal segments darkened.
Leg proportions (microns):
| Fe
| Ti
| Ta1
| Ta2
| Ta3
| Ta4
| Ta5
| LR
| F/T
| BR
| PI
| 1510
| 1330
| 2090
| 1000
| 850
| 690
| 310
| 1.44-1.78
| 1.11-1.35
| 1.1-1.8
| PII
| 1600
| 1490
| 850
| 440
| 330
| 240
| 180
| 0.55-0.58
| 1.03-1.09
|
| PIII
| 1820
| 1860
| 1290
| 710
| 580
| 310
| 200
| 0.67-0.75
| 0.98-1.00
|
| Male abdomen variable, generally darkened, with pale posterior band, but may be green with only a dark saddle spot. About 8 setae on the 9th tergite. Superior volsella of D-type, between d and e of Strenzke (1959). Inferior volsella with forked setae.Females:
General coloration as in males, but with dark markings more extensive.
Wing length: 3.95 (2.76-5.05) mm, width: 1.14 (0.88-1.33) mm. Squama fully fringed, 3 (2-6) setae on stem vein. Haltere pale.
Antennal proportions (microns) 190 : 135 : 155 : 140 : 225; AR = abt 0.36; A5/A1 = abt 1.18.
Palpal proportions (segments 2 to 5) (microns) 75 : 225 : 265 : 395. Length of frontal tubercles 26 (15-32) micron.
Clypeus broad, 1.5 times the width of the antennal pedicel; 31 (25-43) clypeal setae.
Pronotum broad, apically tapered, then abruptly widened at the apex, anteriorly with a broad notch. Mesonotum with a very slight median tubercle. About 18 dorsocentral setae in roughly two roughs, becoming single posteriorly. About 5 pre-alar setae, 1 supra-alar seta. Scutellum with 19 setae in posterior row, 10 in anterior row (range 25-43 in total).
Leg proportions (microns):
| Fe
| Ti
| Ta1
| Ta2
| Ta3
| Ta4
| Ta5
| LR
| F/T
| Ta4/Ti
| PI
| 1470
| 1220
| 1880
| 850
| 780
| 740
| 330
| 1.45-1.88
| 1.20-1.24
| 0.61-0.73
| PII
| 1550
| 1420
| 760
| 400
| 310
| 220
| 180
| 0.51-0.59
| 1.08-1.09
|
| PIII
| 1730
| 1690
| 1150
| 600
| 490
| 310
| 200
| 0.65-0.70
| 0.97-1.02
|
| Abdominal fasciae much broader than in male, segments two to nine dark with a light posterior border. Genital lamellae as in other members of the genus. Segment X with about 2-9 setae and about 2.7 times longer than the greatest width. Cercus roughly square but with curved posterior margin and a basal ventral bulge.
Segment X (lower left) and cercus of C. cloacalisMolecular:
MtCOI - GenBank (Acc. No. AF192214.1, and several others) and BOLD (CAUS025-10, CAUS026-10).
MtCytB - GenBank (Accession number AF192183.1). Found: Australian Capitol Territory - Belconnen (-35.23°S, 149.05°E).
New South Wales - Asquith; Carlisles Gully, 21 Km ne. Bendemeer; Berowra; 9 Km s. Broken Hill; Clifton; Goulburn; Kolstap Bore,
w. Perri (Peri) Lake (-30.70°S, 143.54°E).; Thredbo Village (-34.50°S, 148.30°E).
Northern Territory - N'dhala reserve, East Macdonnell Ranges.
Queensland - Atkinsons Dam; Balonne Riv., Babinda Creek Babinda; 2 Km s. Bindle; 20 Km sw. Bell; Calliope; Lotus Creek;
Noosaville; St. Lucia; Toowoomba; Woodridge.
South Australia - Bolivar Sewage Works; Hawker; Naracoorte; Oratunga Creek, Parachilna.
Tasmania - Bellerive (-42.83°S, 147.33°E).
Victoria - Albert Park; Altona; Bacchus Marsh; Ballarat East; Dandenong; Dandenong Creek, Dandenong (Carew et al. 2013);
Dandenong South (Carew et al. 2013); Nilimbik pond, Diamond Creek (Carew et al. 2013); Doncaster; Endeavour Hills
(Carew et al. 2013); Kalparrin Reserve, Greensborough (Carew et al. 2013); Ovens Track nr. Harrietville (Carew et al. 2013); Lara;
Leslie Manor; Lilydale; Lower Templestowe; Meredith; Mildura; Red Leap, Mill Park (Carew et al. 2013); Nar Nar Goon; Noble Park;
North Balwyn; Parkville; 'Strathfieldsaye' Perry Bridge; Spout Creek; Wantirna Rd., Wantirna (Carew et al. 2013); Melbourne Water
Metropolitan Farm, Werribee (-37.92°S, 144.67°E) (Lectotype locality); Wilsons Promontory National Park, nr. Yanakie.
Western Australia - Armadale (-32.253°S, 116.015°E); Lake Gwellup (-31.867°S, 115.800°E) nr. Perth; Lake Seppings (-35.015°S,
117.911°E), Mira Mar, Albany; Albany (Carew et al. 2013); Sherlock River (-20.578°S, 117.378°E), Sherlock. See also C. cloacalis immatures; | C. 'februarius' adult.[ Return to Index | Go to References ] |