669. 

 PIPIZA BIGUTTATA. 



Order Diptera. Fam. Syrphidae. 



Type of the Genus, Musca noctiluca Linn. 



PiPizA Fall., Meig., Macq., Curt. — Eristalis, Mulio Fab. — Musca 

 Linn. 



Antenn(B attached to the prominent margin of the forehead, 

 short, porrected, 5-jointed, basal joint bristly, elongate, subpy- 

 riform-truncate, 2nd bristly, obconic, truncated at the base, 3rd 

 large, velvety, subrhomboidal, compressed, a little hollowed at 

 the base, 4th minute, inserted on the back of the 3rd near the 

 base, 5th a stout, shortish, pubescent seta, slender at the apex 

 (3). 



Trophi short and concealed in a cavity under the head. 

 Labrum short, stout, trifid at the apex (lb). 

 Tongue shorter than the labrum broad and ovate (c). 

 Maxilla; a little longer, lanceolate and acute (e). 

 Palpi as long, thick and pubescent, rounded at the apex (f ). 

 Lip short and very thick, forming a large globose bilobed mass 



fe). 

 Head transverse , semioval : face transverse-ovate, the forehead pro- 

 jecting (2) ; clypeus even ( $ ) .• eyes large, pubescent, meeting on 

 the croivn in the male, (^), remote in the female: ocelli 3 in tri- 

 angle. Thorax globose .- scutel semiovate. Abdomen elongate- 

 ovate, or elliptical. Wings parallel, incumbent, iridescent, rather 

 short in some, the transverse nervure more or less waved arid oblique, 

 with a peduncle at the apex (9) . Halteres small and capitate. Legs 

 short and stout, hinder the longest and stoutest : thighs simple, hinder 

 sometimes slightly thickened: tibiae, hinder curved, with a slight 

 tubercle on the inside towards the base : tarsi 5-jointed, basal joint 

 the longest, incrassated in the hinder, 4th lunate : claws and pnlvilli 

 moderately large. 



BiGUTTATA Curt. Guide, Gen. 1234. iP. 



Head thorax and scutel shining bluish-black, the two latter finely 

 but sparingly punctured, clothed with a few short white hairs : 

 antennae dark brown, 3rd joint the longest. Abdomen dull 

 violaceous-black, thickly punctured, with 2 ochreous spots on 

 the 2nd segment, forming one large spot beneath : wings rather 

 short, nervures piceous ; halteres ochreous : legs shining black, 

 tips of thighs and base of tibiae ochreous, basal joint of anterior 

 tarsi, 2 basal joints of intermediate, and the 2nd joint in the 

 hinder pair ochreous. 



In the Cabinets of Mr. Dale and the Author. 



