Culiseta alaskaensis (F)
Culiseta alaskaensis (Ludlow, 1906)
Type-loc: Alaska
Culiseta annulata, Culiseta alaskaensis, Culiseta atlantica and Culiseta subochrea are very similar species. Distribution area of Culiseta atlantica helps to avoid misidentification but for the rest, important characters are the colour of the scales on the abdomen and femur of the hindleg.
A subspecies Cs. alaskaensis indica (Edwards, 1920) has a distribution range from the Caucasus to middle Asia.
Culiseta alaskaensis (F)
Culiseta alaskaensis (F)
Culiseta alaskaensis (F)
Head
- HEAD - THORAX: Anopheles or not : 1. maxillary palpus clearly shorter than proboscis ; 3. scutellum clearly trilobate
- HEAD: Colour of maxillary palpus : 3. with mixed dark and pale scales
- HEAD: Colour of proboscis : ?
- HEAD: Colour of maxillary palpus - Cs : 3. with mixed dark and pale scales
Thorax
- THORAX: Prespiracular and postspiracular setae : 2. prespiracular setae present postspiracular setae absent - Culiseta
- THORAX: Scutum's ornamentation : 3. with 1 to 3 pairs of white dots
- THORAX: Scutum's ornamentation - Cs : 2. with lateral pale spots
Wings
- WING: General ornamentation of the wing : 2. dark with black spots
- WING: Colour of the scales on the wing veins : 1. dark scales only
- 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: Ornamentation of the base (alula) : 1. with a fringe of scales
- WING: Wing length from insertion to apex : 6. longer than 5 mm ; 7. longer than 6 mm
Legs
- LEGS I - III: Ornamentation of the femur's 1/3 distal part : 1. entirely dark, at most with a small apical ring
- LEGS I - III: Ornamentation of tarsomere 1 : 1. entirely dark, at most with 2 pale rings (basal and apical)
- 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 tarsomere 1 : 1. entirely dark, at most with 2 pale rings (basal and apical)
- LEG III: Colour of tarsomere 4 : 3. with a pale basal ring
- LEG III: Colour of tarsomere 5 : 1. entirely dark
- LEG III: Colour of tibia : 1. entirely dark
Abdomen
- ABDOMEN: Colour of the scales on the tergite : 5. with creamy white and dark scales
- ABDOMEN: Ornametation of tergite III : 2. with a basal pale band
- ABDOMEN: Ornamentation of tergites III and IV : 1. with a basal pale band
Distribution
- SAMPLING AREA: West of Western Palaearctic Region : Austria ; Czech Republic ; Estonia ; Finland ; France ; Germany ; Hungary ; Ireland ; Kaleningrad ; Latvia ; Lithuania ; Netherlands ; Norway ; Poland ; Romania ; Slovakia ; Slovenia ; Sweden ; Switzerland ; United Kingdom
- SAMPLING AREA: East of Western Palaearctic Region : Armenia ; Belarus ; Crimean Peninsula ; Georgia ; Moldova ; Russia - Northwestern ; Russia - Western - Central ; Russia - Western - Volga ; Turkey ; Ukraine
- SAMPLING AREA: South of Western Palaearctic Region : non décrit