SYRPHUS. INSECTS. 387 



** No nasal prominence. 



Gen. MILESIA, EUMENOS, THOPIDIAS, PIPIZA, XYLOTES, SPHEGINE, 



MERODON, ASCIA. 

 2. Antennae of two joints, the last subulate at the extremity. 



Gen. PIPUNCULUS. (The genus Cephalops of M. Fallen is identical La- 

 treille conceives with this.) 



Gen. SYRPHUS, Oliv. Lat. Musca, Lin. 

 Proboscis much shorter than the head and thorax; anterior 

 prolongation of the head or snout short and very obtuse, with 

 a small eminence above ; wings distant ; antennae percepti- 

 bly shorter than the head, almost parallel, the last joint or- 

 bicular or almost ovoid, with a simple seta or slightly plu- 

 mose. 



The larvae of this genus inhabit trees or plants upon which aphides abound, which 

 they destroy in great numbers. They resemble a membranaceous worm, flatten- 

 ed below, pointed at the anterior extremity, the posterior extremity thick and rounded. 

 Their colour is greenish or yellowish, with a line of a different colour along the mid- 

 dle of the back. 



S. ribesii, Lat. Head yellow and eyes reddish brown ; thorax bronze- 

 coloured, with the scutellum and hairs yellow ; abdomen black 

 above, with four transverse yellow bands, of which the first is in- 

 terrupted ; feet yellow, spotted with black. Inhabits Europe, 

 on gooseberry bushes. Nouv. Diet, xxxii. 326. 



TRIBE II. CONOPSARLE, Lat. 



Proboscis projecting, in the form of a syphon, and either cy- 

 lindrical, conical, or setaceous. 



I. }Jody narrow and elongated ; second joint of the antennae as long or longer than 

 the third, and forming with it a fusiform ovoid or compressed club. 



Gen. CEPHENE, (in place of Systrophus, already employed ;) CONOPS, Zo- 

 DION, MYOPA. 



II. Body short; second joint of the antennae much smaller than the third, which is 

 ovoid and flattened. 



Gen. BUCENTES, STOMOXYS. 



Gen. CONOPS, Lin. Lat. 



Antennae the length of half the thorax, straight, clavate or 

 nearly so, of three joints, the second very long, cylindrical, 

 the last short, conical, and terminated in a small point ; pro- 

 boscis geniculate at the base, of three joints, projecting, in- 

 closing two setae, which form the sucker ; inferior seta much 

 longer than the upper ; no palpi or ocelli. 



The insects of this genus have a large almost hemispherical head, broader than 

 the thorax, having at its anterior and inferior part a cavity to receive the proboscis. 

 The thorax is short and cubical, with the humeral angles projecting ; the abdomen 

 elongated, slender at its base, recurved and tumid at the extremity ; feet long and 

 slender ; tarsi with two hooks and two balls at the end ; wings as long as the abdo- 

 men, narrow and distant, and the balancers elongated. They are extremely vora- 

 cious animals, and are found in gardens and meadows. 



C. rujipes, Fab. Antennae black ; head yellow ; eyes brown ; tho- 

 rax black, with an elevated and yellow point on each side of the 



