I BRITISH OUIAKA TIPULIDAK 



Pronotum black 7 



Small species (cf, length, 2.5-3 mm.); legs with the basal two-thirds 

 yellowish-tawny [head black; halteres brown, knob yellow; 

 apical band including the distal end of cell Isl Mil. (Brazil) 

 polita Osten Sacken' 



Larger species ( 9 , length, 5 mm.) ; legs dark brown [head black; wings 

 with the apical band not including the distal end of cell Isi Mt 

 which is seamed with brown ; basal band narrow, linear.] . (Costa 

 Rica, Panama.) rostrata Enderlein' 



The apical band on the wings not including the distal end of cell 

 IstM, 9 



The outer band on the wings including the distal end of cclUst il/; 10 



Basal band on the wings narrow, linear; mesothorax mostly yellow; 

 femora without a medial band [thorax with a large black spot on 

 the middle of the praescutum; pleura clear yellow; legs dark 

 brownish black except the base of the femur which is paler]. 

 (Brazil) pulcheJla -Mexander* 



Basal band on the wings broad, diffuse; mesothorax mostly dark; 

 femora with a brown medial band [colors on the wing-disc much 

 paler, less well defined; head yellowish usually with a dark brown 

 mark on vertex]. (Guiana) melanocephala Fabricius'" 



Wing markings not so extensive, the band along the cord narrow, not 

 extending caudad of the basal deflection of Cm and in no way 

 connected with the apical band [head dark brown; pronotum 

 very light yellow; mesonotum with a chestnut dorsal stripe; 

 femora yellow with the tip black]. (Central .America) 



sackeni .\lexander" 



Wing markings extensive, the band along the cord broader, attaining 

 the hinder margin of the wing and connected along the costal 

 and caudal margins with the broad apical band and thus enclosing 

 a large oval spot of hyaline 11 



Head black : pleura with a large blotch ; basal cells of the wing suffused 

 with dark color; size larger (9, 6.1 mm) [pronotum lightyellow; 

 hind legs blackish; halteres dark throughout]. (Peru) 



jucunda .\lexander" 



Head reddish brown; pleura unspotted; basal cells of the wings almost 

 devoid of dark color; [pronotum yellow; halteres dark through- 

 out]. (Bolivia) laeta Alexander" 



' 1887. polita Osten Sacken, Berl. Ent. Zeit., xxxi, pt. 2, 189. 



' 1912. roslrata Enderlein, Zool. Jahrb... xxxii, pt. 1, 68, 69, fig. Ql. 



' 1913. pulchella Alexander, Psyche, xx, 44, pi. 2, figs, b, I. 



"1794. melanocephala Fabricius, Entomol. Syst., iv, 241 {Tipuln). 



" 1913. sackeni Alexander, Psyche, xx, 42, 43, pi. 2, fig. a. 



" 1913. jucunda Alexander, Ent. News, xxiv, 441. 442, pi. 16. fig 4 



" 1913. laeta Alexander; ibid., 442, 443. pi. 16, fig. ."i. 



