MOSQUITOS OF THE PALAEARCTIC REGION. 287 



4. Tip of eighth sternite with a close-set row of short spines alaskaensis, Ludlow. 

 These spines absent . . . . . . annulata, Schrank. ; subochrea, Edw. 



5. Side-pieces barely three times as long as their basal width ; tip of eighth 



sternite without row of spines . . . . . . . . morsitans, Theo. 



Side-pieces four times as long as their basal width ; tip of eighth sternite 

 with row of short spines . . . . . . . . fimiipennis, Steph. 



Larvae. 



1 . Antennae short, with small hair-tuft or a single hair ; siphon short, at 



most three times as long as broad . . . . . . . . . . . . 2 



Antennae long, with large, many-branched tuft ; siphon long, at least five 

 times as long as broad (subgenus Cidicella) . . . . . . , , 3 



2. Siphon with 6-10 stout, widely-spaced spines (subgenus Allotheohaldia) 



longiareolata, Macq. 

 Siphon with a well-marked pecten, most of the teeth of which have their 

 tips drawn out into long hairs (subgenus Theohaldia) 



annulata, Schrank ; subochrea, Edw. 



3. Pecten straighter ; siphon without accessory spines . . morsitans, Theo. 

 Pecten oblique ; siphon also with accessory spines . . . .fimiipennis, Steph. 



The larvae of T. glaphyroptera and T. alaskaensis are unknown. 



Subgenus Allotheohaldia, Brolemann. 



1. Theohaldia (Allotheohaldia) longiareolata (Macquart). 



Culex longiareolatus, Macquart, Dipt. Exot. i, 1, p. 34 (1838). 



Culex spathipalpis, Rondani, Bull. Soc. Ent. Ital. iv, p. 31 (1872). 



Culex serratipes, Becker, Mitt. Zool. Mus. Berhn, iv, p. 78 (1908). 



Culex annulatus var. marocanus, d'Anfreville, Bull. Soc. Path. Exot. ix, p. 140 



(1916). 

 A very distinct species, which could not be confused with any other, either in 

 the adult or larval state. The larva has been fully described by Langeron. 



Distribution. — Throughout the Mediterranean region and in most of the Atlantic 

 islands ; spreading southwards by East Africa as far as the Cape Province, and 

 eastwards through Transcaspia, Mesopotamia and Persia to the Punjab. In France 

 it has been taken as far north as Rambouillet [Villeneuve), but it appears to be other- 

 wise unknown in central and northern Europe. Some new records are : Transcaspia 

 (Askhabad, Firudza, Vrefskaja, A linger) ; Seistan {Annandale). 



Subgenus Theohaldia, Neveu-Lemaire. 



2. Theohaldia (Theohaldia) glaphyroptera (Schiner). 



Culex glaphyropterus, Schiner, Fauna Austriaca, ii, p. 628 (1864). 

 Theohaldia bergrothi, Edwards, Entom. Tidskr. p. 50 (1921). 



This was described by Schiner and Ficalbi as having spotted wings, and assuming 

 that these authors' statements indicated a definite spotting such as that of T. annulata, 

 I was led to regard the specimens sent me by Drs. Bergroth and Frey as a distinct 

 new species. Later, however, I received a series of specimens from the Vienna Museum, 

 including some of Schiner's original series, and these showed that the spotting of the 

 wings is really hardly distinguishable, except for a darkened area of the membrane 

 towards the costa in the middle. The Finnish and Swedish female specimens for 

 which I proposed the name bergrothi are almost certainly only T. glaphyroptera. 

 On the other hand, Theobald's Pseudotheobaldia niveitaeniata, which I supposed in 

 1913 to be synonymous with T. glaphyroptera, is a perfectly distinct species. 

 (4183) ' x2 



