226. 



STYLOPS DALIL 



Order Strepsiptera Kirhy. Rhipiptera Lat. 

 Tijpe of the Genus Stylops Melittse Kirby. 

 Stylops Kirby, Lat., Leach, Lam., Sam. 



Antennce inserted between the eyes near the crown of the head, 

 membranous, perforated or punctured^ composed of 6 joints, the 

 basal one somewhat cup-shaped, 2nd very short, transverse, 3rd 

 produced on the internal side into a dilated hollow lobe extending 

 beyond the 5th joint, 4th large subclavate, oth smaller subovate, 

 6th as long, ovate, compressed (D 1, F 1 and G.) 

 Labrum and Mandibles wanting? Pharynx visible (E a). 

 Maxillcs arising between the eyes, very remote at their base, 

 conniving, long, slender, lanceolate and horny (E 3, F 3). 

 Palpi arising close to the maxillae (H), large and robust, mem- 

 branous, indistinctly pubescent, biarticulate, basal joint subreni- 

 form, 2nd attached to the oblique apex of the 1st, oblong, some- 

 what truncated obliquely (E 4, F 4). 

 Mentum very obscure. Labium and Palpi none. 

 Head sessile, very broad and short, producing a large triangular lobe 

 in the centre. Eyes very rernote, lateral, globose, composed of nu- 

 merous hexagons. Prothorax (I) and Mesothorax (K) very short 

 rings, not so broad as the head. Metathorax (D 6) very large and 

 long, divided diagonally into 4 portions and dilated very much on each 

 side, producing a large Scutellum (D*) projecting over the Abdo- 

 men (M) which is small, soft, and composed of 8 or 9 joints, termi- 

 nated by an incurved Oviduct? (a). Anterior wings short and 

 narrow, attached to the sides of the mesothorax (D 9, K 9), sub- 

 coriaceous, pubescent, thickened at the costa and inflated at the apex. 

 Posterior wings attached to the metathorax (D 10, L 10), folded 

 longitudinally when at rest and meeting over the body, very large 

 and membranous, the costa thickened, the nervures very fine. Legs 

 alike, 4 anterior approximating (D), \st pair attached to the pro- 

 thorax (I 8), 2nd pair to the mesothorax (K 8*), 3rd pair very re- 

 mote attached to the extremity of the metathorax (L Sf). Coxae, 

 4 anterior very large. Tibiae not spined. Tarsi composed of 4 joints 

 surrounded by a pubescent membrane, basal joint the largest, ter- 

 minal the smallest and notched at the apex. Claws 7ione. 

 Larvae inhabiting the abdomens of living AndrencB, the heads being ex- 



serted between the segments (A, a, b, and B, one extracted) . 

 Pupae inhabiting the same situations (C). 



Dalii Nobis. 



Intense velvety black. Palpi with the 2nd joint much smaller 

 than the 1st. Antennae with the 2nd joint very minute, and the 

 5th shorter than the 6th. Scutellum at the base and abdomen 

 at the sides ochraceous. Superior wings or elytra fuscous ; in- 

 ferior wings emarginate at the posterior edge and narrowed to- 

 wards the anal angle ; milky white, iridescent, the costa fuscous 

 as well as several of the nervures at the base. Legs fuscous. 



In the Cabinets of Mr. Dale and the Author. 



