CULEX 



799 



[e) Abdomen with basal white lateral spots. 



(1) Thorax with two pale, indistinct, median, parallel lines, and 



two silvery lateral spots — minuta Theobald. 



(2) Thorax unadorned. 



White spot mid-head — tripunctata Theobald. 

 No white spot — amesii Ludlow. 



C. Proboscis yellow basally, dark apically. 



Abdomen with apical pale bands — crassipes van der Wulp. 



D. Proboscis with median interrupted white line on basal half. 



Head black with grey margin — albomavginata Newstead. 



Note. — 5. lamherti Ventbrillon; S. leucomeres, S. desmotes Giles; S.striocrura 

 Giles, of uncertain position. 



Gulex Linnaeus, 1758. 

 Definition.— Culicidse with head covered with narrow, curved scales above, 

 fiat scales at the sides, and upright forked scales. Male palpi long, acuminate. 

 Female, short. Thorax with hair- 

 like, curved scales or narrow 

 curved scales. Linear lateral vein- 

 scales. 



Remarks. — The important 

 species are Culex pipiens Lin- 

 naeus and C. fatigans Wiedemann. 



Culex pipiens Linnaeus, 1758. 



Synonyms. — Culex vulgaris 

 Linnaeus, 1767; C. alpinus Lin- 

 naeus, 1767; C. agilis Bigot; C. 

 ciliaris Linnaeus, 1767; C. com- 

 munis de Geer; C. rufus Meigen, 

 1818 ; C. phytophagus Ficalbi, 

 1889. 



C. pipiens is widely distributed 

 in Europe, North Africa, and 

 North America, where it is the 

 common brown mosquito. 



Its general appearance is well 

 shown in the illustration, in 

 which the head is brownish from 

 the golden- brown scales, as are 

 the proboscis, palpi, and antennae. 



The thorax is dark brown, with golden-brown curved scales, and with three 

 black lines due to black bristles. Abdomen brown, with basal yellow bands. 

 Legs are brown and unhanded. 



Culex fatigans Wiedemann, 1828.. 



Synonyms. — Culexastuans'Wiedemsinn, 1S2S; C. pungens Wiedemann, 1828; 

 C. pallipes Meigen, 1838; Heteronychia dolosa Arribalzaga, 1896. 



This is the common brown house-mosquito of the tropics, which is beheved 

 to spread dengue fever. 



It resembles the above, but has only two dark lines on the thorax as a rule, 

 while the basal abdominal bands are white or pale cream colour, and the first 

 fork cell is longer. 



^DiN^ Theobald. 



Culicidse with straight proboscis, short palpi in both sexes, 



Fig, 399. — -Head and Scutellum of a 

 Culex, to show Scales. 



(After Theobald, ' CuHcidse of the World.') 



Definition 



usually plumose antennae in the male, pilose in the female 



Wings with six 



