Aedes impiger (L)
Aedes impiger (Walker, 1848)
Type-loc: Canada
Cephalic setae 5 and 6-C single and comb with 7 to 16 acute scales; differs from Aedes punctodes by the seta 1-S inserted before the middle of the siphon.
Aedes impiger (L)
Aedes impiger (L)
- Developmental stage : 2. larva
- ABDOMEN: Presence of an acu on the base of the siphon : 2. acu present
Head
- HEAD: Colour of maxillary palpus : 3. with mixed dark and pale scales
- HEAD: Colour of proboscis : 1. entirely dark
- HEAD: Ornamentation of the antennal integument _ Ae : 2. distinctly spiculate
- HEAD: Location of the antennal seta 1-A : 1. on the basal half ; 2. on the apical half
- HEAD: Number of branches on the antennal seta 1-A : 3. 3 branches or more
- HEAD; Branch number of seta 6-C : 1. 1 branch
Thorax
- THORAX: Prespiracular and postspiracular setae : 3. prespiracular setae absent postspiracular setae present - Aedes
- THORAX: Colour of the scutum scales : 2. yellow and cream or white
- THORAX: Scutum's ornamentation : 1. without well-marked patterns
- THORAX: Metameron's ornamentation : ?
- THORAX: Postprocoxal area's ornamentation : ?
- THORAX: Prealar area's ornamentation - Ae : 3. with 1 pale scale patch
- THORAX: Ornamentation of the insertion point of setae 11-M and 11-T : 1. insertion near a small tooth
Wings
- WING: Colour of the scales on the wing veins : 1. dark scales only ; 2. pale scales only along the costal margin
- WING: Number of pale marks on the costal margin : 1. without spots
- WING: Uranotaenia or not : 2. apex of anal vein ends after mcu/cuA fork ; 4. length of the R2+R3 vein is shorter than R2/R3
- WING: Arrangement of the pale spots on the fringe : 1) without spot
Legs
- LEG III: Colour of tarsomere 2 - Ae : 1. entirely dark
- LEG I: Orthopodomyia or not : 2. tarsomere 4 is equal or longer than tarsomere 5 ; 4. length of tarsomere 1 is shorter than tarsomere 2 through 5
- LEG III: Colour of tibia : 7. specled, in the median area at least
Abdomen
- ABDOMEN: Shape of the pale basal band of tergite IV : 1. with an even widh
- ABDOMEN: Ornamentation of tergite IV : 2. only lateral pale scales ; 3. a basal pale band and lateral patches
- ABDOMEN: Ornametation of tergite III : 2. with a basal pale band ; 4. with an apical pale band
- ABDOMEN: Respiratory aperture - Siphon : 2. opening at the apex of a cylindrical tube - siphon
- ABDOMEN: Siphonal tufts : 3. one pair of siphonal tuft inserted close to the middle or near the apex of the siphon - Aedes
- ABDOMEN: Abdominal plates : 1. abdominal plates absent
- ABDOMEN: Aspect of the setae other than 1-IV to 1-VII : 1. thin and supple
- ABDOMEN: Shape of the saddle : 3. open
- ABDOMEN: Ornamentation of the apicodistal side of segment X : 1. without spicules
- ABDOMEN: Shape of seta 9-S : 1. short and slightly curved
- ABDOMEN: Size of the siphon : 1. short
- ABDOMEN: Shape of comb teeth on segment VIII : 1. median tooth clearly longer
- ABDOMEN: Aspect of the pecten teeth : 2. spine - like
- ABDOMEN: Arrangement of the pecten teeth on the siphon : 1. without any clearly isolated teeth
- ABDOMEN: Comb teeth number : 1. 5-8 ; 2. 9-12 ; 3. 13-16
- ABDOMEN: Anal gill's size and shape : 3. equal to or longer than the saddle length
- ABDOMEN: Precratal setae number : 1. 1 ; 2. 2 ; 3. 3
- ABDOMEN: Insertion of the last pecten tooth : 1. before the siphon's middle part
- ABDOMEN: Arrangement of the comb teeth : 1. on 1 irregular row
- ABDOMEN: Insertion of the seta 1-S : 2. beyond the last pecten tooth