Aedes excrucians (L)
Aedes excrucians (Walker, 1856)
Type-loc: Canada
The hooked seta 9-S at the siphon apex is more conspicuous than Aedes behningi; differentiation with Aedes surcoufi is not always possible.
Aedes excrucians (L)
Aedes excrucians (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 : 2. pale in the median area
- 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 : 2. 2 branches
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 ; 2. with continuous bands
- THORAX: Metameron's ornamentation : 1. scale patch present ; 2. scale patch absent
- THORAX: Postprocoxal area's ornamentation : ?
- THORAX: Prealar area's ornamentation - Ae : 3. with 1 pale scale patch
- THORAX: Scutum's continuous bands : 2. other colors
- 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
Legs
- LEG III: Length of the basal ring of tarsomere 2 : 2. >= half of the tarsomere length
- LEG I: Tarsal claw's shape : 2. spines almost parallel, the first are sharply curved
- LEG III: Colour of tarsomere 2 - Ae : 2. white at the base
- 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 : non décrit
- ABDOMEN: Ornamentation of tergite IV : 10. pale basal band, dark sprinkled area
- ABDOMEN: Ornametation of tergite III : 2. with a basal 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 : 2. with spicules
- ABDOMEN: Shape of seta 9-S : 2. hook-like
- ABDOMEN: Size of the siphon : 2. medium
- 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 ; 2. with 1 to 3 clearly isolated teeth
- ABDOMEN: Comb teeth number : 6. 25-30 ; 7. 31-35
- ABDOMEN: Anal gill's size and shape : 3. equal to or longer than the saddle length
- ABDOMEN: Precratal setae number : 4. 4 ; 5. 5 ; 6. 6
- ABDOMEN: Insertion of the last pecten tooth : 1. before the siphon's middle part
- ABDOMEN: Arrangement of the comb teeth : 2. in a triangular patch
- ABDOMEN: Insertion of the seta 1-S : 2. beyond the last pecten tooth
Distribution
- SAMPLING AREA: West of Western Palaearctic Region : Austria ; Bulgaria ; Croatia ; Czech Republic ; Denmark ; Estonia ; Finland ; Germany ; Hungary ; Kaleningrad ; Latvia ; Lithuania ; Netherlands ; Norway ; Poland ; Romania ; Serbia ; Slovakia ; Slovenia ; Sweden ; Switzerland
- SAMPLING AREA: East of Western Palaearctic Region : Belarus ; Crimean Peninsula ; Georgia ; Moldova ; Russia - Northwestern ; Russia - Western - Central ; Russia - Western - Volga ; Russia - Southwestern ; Turkey ; Ukraine
- SAMPLING AREA: South of Western Palaearctic Region : non décrit