Culex thalassius (F)
Culex thalassius (Theobald, 1903)
Type-loc: Gambia
This species has a basal pale band on the abdomen.
Culex thalassius (F)
Culex thalassius (F)
Head
- HEAD - THORAX: Anopheles or not : 1. maxillary palpus clearly shorter than proboscis ; 3. scutellum clearly trilobate
- HEAD: colour of maxillary palpus : 1. entirely dark
- HEAD: colour of proboscis : 5. with a clearly marked median pale ring
Thorax
- THORAX: Prespiracular and postspiracular setae : 1. prespiracular and postspiracular setae absent
- THORAX: scutum's ornamentation : 1. without well-marked patterns
- THORAX: prealar areas ornamentation : 1. without prealar scales
- THORAX: lower mesepimeral seta : 1. without setae
- THORAX: postspiracular area's ornamentation : 1. without scales
Wings
- WING: general ornamentation of the wing : 1. entirely dark ; 3. with a thin line of pale scales on the costal vein base
- WING: colour of the scales on the wing veins : 2. pale scales only along the costal margin
- WING: position of wing veins R2+3 and M1+2 : 2. furcation of vein R2+3 more distant from the furcation of vein M1+2
- 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 : 2. between 3 - 3,5 mm ; 3. between 3,6 - 4 mm
- WINGS and LEGS I - III: Culex or Coquillettidia : 2. wing scales narrow, pulvili present, claws smaller - Culex genus
Legs
- LEG I: tibia's colour : 1. entirely dark or with some pale scales at the apex
- 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 : 2. white at the base ; 3. white at the base and apex
- LEG III: colour of tarsomere 5 : 1. entirely dark
- LEG III: colour of tibia : 2. with an apical pale ring
- LEG I: colour of the scales on the coxa : 2. with pale and dark scales
- LEG II: tibia's colour : 1. dark with at most some pale scales
- LEG II: colour of the external side of the femur : 1. entirely dark
- LEG III: relative sizes of tarsomere 1 and tibia : 1. tarsomere nearly as long as tibia ; 3. tarsomer clearly longer than tibia
- LEG III: colour of femur : 1. with the basal half partially dark
Abdomen
- ABDOMEN: colour of the scales on the tergite : 5. with creamy white and dark scales
- ABDOMEN: colour of tergite III : 2. with a basal pale band
- ABDOMEN: Ornametation of tergite III : 2. with a basal pale band