﻿369. 

 ALYDUS CALCARATUS. 



Order Hemiptera. Fam. Coreidae. 



Type of the Genus, Cimex calcaratus Linn. 



Alydus Fab., Curt. — Coreus Lat. — Lygseus Fab., Wolff". — Cimex Linn. 

 AntenncE inserted before the eyes, remote, long and nearly filiform, 

 geniculated and pubescent j 4-jointed, three first joints nearly of 

 equal length, rather long slender and clavate, the basal joint a 

 little the shortest, 4th joint nearly twice as long as the 3rd, and 

 considerably thicker, cylindric, conical at the apex (4). 

 Labrum a little longer than the basal joint of the labium, attenu- 

 ated to the apex, pilose and transversely striated (3). 

 Mandibles and Maxillce setiform, inclosed in the 

 Labium which is as long as the head and thorax, tapering, slightly 

 pubescent and 4-jointed, 1st and 2nd joints the longest, of equal 

 length, 3rd the shortest, slender, 4th a little longer (2). 

 Head elongate-trigonate, forming a distinct neck behind. Eyes lateral, 

 globose and very prominent. Ocelli 2, placed at the back part of 

 the crovm of the head, rather remote and elevated. Thorax subcorneal, 

 truncate before, base concave. Scutellum rather long and narrow. 

 Abdomen long and linear, the sides elevated, above concave, beneath 

 convex, the apex furnished with 2 obtuse appendages in the male. 

 Wings, superior with the basal part obliquely coriaceous, the 

 apical portion striated longitudinally with numerous nervures : infe- 

 rior wings transparent and iridescent, with several nervures, those 

 towards the costa strong. Legs, anterior short, posterior long. 

 Thighs, posterior incrassated, furnished with 5 or 6 teeth beneath. 

 Tibiae slender. Tarsi short, triarticulate, basal joint long, 2nd shortest. 

 Claws acute, with a membranous appendage at the base of each. (6 

 hind leg.) 



Calcaratus Linn. F. S. n. 968.— Wolf. t. 14./. 138.— Cwrf. Guide, 

 Gen. 1125. 



Dull black above, more or less brassy or cupreous beneath ; 

 clothed with soft hairs : antennae with the base of the joints fer- 

 ruginous, 2nd and 3rd sometimes nearly entirely so : ocelli 

 ruby colour : head and thorax thickly punctured, the latter being 

 the coarsest with a transverse impression before, in the centre of 

 it a foveolet : superior wings pale fuscous ochre, mottled with 

 brown and rust colour at the base ; nervures of inferior wings 

 brown : abdomen red above, excepting the base and apex which 

 are shining black, the elevated margins brassy black with 4 yel- 

 lowish spots on each : tibiae, except at the base and apex, and 

 the base of the 1 st joint of tarsi ferruginous. 



In the Author's and other Cabinets. 



