MOSQUITOS OF THE PALAEARCTIC REGTOX. 283 



1. U. unguicuiata, £d\v. 



Urmiotaenia iWi/^/a'c/z/a/a, Edwards, J. Pioc. Asiatic. (Soc.) Bengal, ix, p. 51 (1913). 



A line of pale blue flat scales passes round the margin of the mesonotum from 

 wing-base to neck. The front claws of the male are unequal, the larger one with a 

 small tooth. 



The larva has been described by Joyeux. 



DistribiUion. — Eastern Mediterranean region. Originally described from North 

 Palestine, it has since been found in Jerusalem {Goldberg), Egypt {Gangh), Macedonia 

 [Waterston, Joyeux), and Italy {Hargreaves), but is alwaj/s rare. 



2. U. bimaculata, Leicester. 



Uranotaenia bimaculata, Leicester, Cul. of Malaya, p. 226 (1908). 



There is no line of flat scales on the margin of the mesonotum, but just in front 

 of each wing-base is a large oval velvet-black spot on the integument. The front 

 claws of the male are normal for the genus, small, ecpial and simple. 



The larva is not yet described. 



Distribution. — Japan (Tokio, S. Yamada) ; Malay Peninsula (Leicester). There 

 is also a representative species ( U. mashonaensis, Theo., = U . bimaculata, Theo.) 

 in tropical Africa, which scarcely differs from the Oriental form. Should the two 

 be united, the species must be known as U. mashomiensis, Theo. 



Genus Rachionotomyia (Theo.) Edw. 

 This genus has never been fully described. I would define it as follows : — 

 Proboscis slender throughout ; longer than the long front femora, and as long 

 as the whole body. Mouth-parts normal ; maxillary teeth very small. Palpi 

 short in both sexes, not more than one-sixth as long as the proboscis. Eemale antennae 

 slender, the verticils about four times as long as the joints ; male antennae with 

 shorter joints (except the last two) and longer verticils. Eyes practically touching 

 above the antennae, the supra-antennal portion broad. A pair of strong bristles, 

 placed close together, projecting forwards from immediately above the line of contact 

 of the eyes ; far away from these bristles are two other smaller ones on each side of 

 the head. Pro thoracic lobes well separated. Mesonotum with or without well- 

 developed dorso-central bristles. One pro-epimeral bristle (even this is absent in 

 some species). Several (3-6) spiracular bristles. No postspiracular bristles ; no 

 row of bristles on the upper part of the sternopleura ; no lower meso-epimeral bristles. 

 Sub-alar knob small, with few bristles. Postnotum bare, with a pair of slight furrows 

 dividing it into three portions. Last segment of female abdomen blunt, very bristly. 

 Male hypopygium : Lobes of ninth tergite elongate, with long apical bristles ; side- 

 pieces rather short, with conical, bristly claspette lobes ; clasper long, terminal, 

 with small thick terminal claw ; tenth sternites split apically into several short, 

 tergally projecting teeth, in a longitudinal row ; aedoeagus very small, a simple, 

 incomplete tube, with small parameres and sometimes apparently with some internal 

 spines. Hind tibiae somewhat shorter than the others. Female claws simple ; 

 front claws of male unequal. Pul villi absent. Wing-membrane with distinct 

 microtrichia. R^ somewhat longer than Rg ^ 3 ; fork-cells moderately long ; anal 

 vein reaching well beyond the level of the base of R^. 



Larva (description based on a comparison of three Oriental species) : Antennae 

 short, smooth, apparently without hair on shaft. Clypeal hairs very small, simple. 

 Posterior corners of metathorax with a long strong spine situated on a chitinous 

 plate, without any accompanying long hairs ; a similar but smaller spine towards 

 each side of the mesothorax. First seven abdominal segments with seven pairs of 

 strong stellate tufts (three dorsal, two lateral, two ventral). Thorax and first six 



