1918] Revision of the Genus Sciara 323 



h. Hypopygium with a median ventral lobe at base finely setose, 

 clasper with single stout apical spine. (Fig. 13, a, b). Wing 



(Fig. 44) 13. lobosa n. sp. 



hh. Hypopygium with no median ventral lobe at base, clasper 

 with more than one apical spine (Fig. 265). 



ocellaris Comstock 

 dd. Black or fuscous species. 



e. Clasper with a mesal articulated process (Fig. 112); Rg ends far 



remote from apex of wing. (Fig. 230) hastata Joh. 



ee. Clasper without mesal articulated process. 



f. Hypopygium near its base with one or two patches of setae on or by 



the side of the median ventral line. 



g. Hypopygium with one patch of setas on the median ventral line 



near its base. 



h. Clasper (Fig. 14, a, b) concave at apex, with at least two stout 



long spines, and over eight smaller spines on the margin of 



the concavity. Wing (Fig. 45) 14. petaini n. sp. 



hh. Clasper of different form and structure, 

 i. Clasper with a terminal tooth. 



j. Clasper blunt at apex. (Fig. 15, a, b). Wing (Fig. 46). 



15. grandis n. sp. 

 jj. Clasper tapering at apex and with several prominent sub- 

 apical spines, 

 k. Hj^popygium with no more than 10 setae on the basal 

 median ventral line. 

 1. Costa extends about half the distance between the 

 tips of Rs and Mi. 

 m. Wing of normal proportions (Fig. 47). Median 

 ventral lobe of hypopygium distinct (Fig. 16, a, b). 



16. trifolii n. sp. 

 mm. Wing narrow (Fig. 240). Median ventral lobe of 

 hypopygium indistinct. Clasper (Fig. 120). 



sativse Joh. 



11. Costa extends about two-thirds the distance between 



the tips of Rs and Mi. (Fig. 117a). .paticiseta Felt. 



kk. Hypopygium with more than 25 setas on the basal median 



ventral line. 



1. Abdomen variable dark ochreous,. palpi yellow, anterior 



veins dark ochreous multiseta Felt. 



11. Abdomen variable dark brown, palpi brown, anterior 



veins nearly black agraria Felt. 



ii. Clasper without a terminal tooth (Fig. 123); the hypopygium 



with the set£e of the ventral median patch arranged in a 



transverse line (Fig. 123a). Halteres black, .jiicunda Joh. 



gg- Hypopygium with 2 patches of setas, one on each side of the 



median ventral line. 



h. Clasper with subapical stout spines, the proximal one longest. 



i. Clasper (Fig. 17 a, b) with 6 or more subapical stout spines, 



the most proximal one being longer than the others. Costa 



produced less than one-half the distance between the tips of 



Rs and Mi (Fig. 48) 17. polychaeta n. sp. 



ii. Claspers (Fig. 18, a, b) with 3 or 4 subapical stout spines. 

 Costa produced at least one-half the distance between the 



tips of Rs and Mi (Fig. 49) 18. conglomerata n. sp. 



hh. Clasper (Fig. 128) with no subapical stout spines. Costa 

 produced over one-half the distance between the tips of 

 Rg and Mi. Cu petiole at least half length of base of M 



(Fig. 247) scita Joh. 



ff. Hypopygium without a tuft of setae on the median ventral line near 

 the base, or if feeble tuft is present then petiole of cubitus is not 

 under .6 as long as the basal section of media. 



