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Show 22 iNSECTA. PENTAToru, Oliv. t . of the superior part of Where the scutellum covers but a por Ion the abdomen. This genus of Olivier forms five in the system o~ the Ryngota of Fabricius; they are, however, as imperfectly characterized, H. JEl' nd Halys are Pentatomre as they are badly arranged. 1s w, a ' with a head more prolonged and projecting in the manner of a rsnout, and more or 1e ss tn.a ngu 1a r. Among the species w. hic.h here ers .t o the first that which he calls the acuminata, and whlch IS the Punazse a tete alo' ngee of Geoffroy, appears to be essent1· a 11 Y remov ed from t.h e Pentatomre by the antennre, which are covered at base by the anteri.or margin of the thorax and separated from it un~erneath, and by Its much larger scutellum, which approximates th1s Insect .to t~e Scutellerre. In his Cydnus, the head, viewed ft·om above, IS wide and semicircular; the thorax forms a transversal square, h~rdly narr~wer before than behind, and the tibire are frequently spmous •. 1 he.sc species remain on the ground. Of this num her is the Punazse notre of Geoffroy. We might also approximate to them, as has already been done by Messrs Lepeletier and Serville-Encyc. Method.-certain species in which the sternum is neither carinated nor armed with a spine. Such are the two following: . . P. ornata; Cimex ornatus, L.; Wolf, C1m1c., II, 16. Length four lines and a half; figure of a rounded ovoid; red, multimaculate; head and wings black.-On the Cabbage and other Cru· ciferre. P. oleracea; Cimex oleraceus, L.; Wolf, I b., II, 16. Length three lines; ovoid; bluish-green with a thoracic line, a dot on the scutellum and one on each elytron, white or red. Other Pentatomre in which the poststernum or mesosternum is rais· ed into a carina, or presents a spiniform point_, would be distinguish· ed by the generic appellation of EnEssA, employed by Fabriciu~. Several of the species which he includes in that genus present th1s character. It is also visible in several of those which belong to his Cimex, such as the two following Pcntatomre: P. luemorrhoidalis; Cimex h::emorrhoidalis, L.; Wolf., Ib., I, 10. Length seven lines; ovoid; green above, yellowish beneath; posterior angles of the thorax extended into an obtuse point; a large br~wn spot on the elytra; back of the abdomen red, spot· ted with black. cave beneath, with the ~argin of tho scutellum pendent over the sides; no simple eyes; legs unarmed. llB~UPTE llA. 23 The female of the P. grisea-Cimex griseus, L.-protects and leads her young ones just as a hen does her chickens( 1 ). We have thought it requisite to establish a new generic section, HETEROSOKLis, for a Pentatoma peculiar to Cayenne, in which the head is cylindrical and the anterior tibire form a semi-oval pallette. Sometimes the antennre have but four joints, and the body is generally oblong. Here the antennre are filiform or clavate. Certain species foreign to Europe approach the preceding in the general form of their body, which is rather ovoid than oblong, and are distinguished from all the following ones, either because it is much flattened, membranous, and with a strongly dilated, slashed aqd angular margin, or because their thorax is prolonged posteriorly in the manner of a truncated lobe, and their sternum is hornedthese latter form the subgenus TESSERATOMA, Established by MM. Lepeletier and Serville-Encyc. Method.with the Edessa papillosa of Fabricius, and his E. amethystina. Some other Edessre of the same naturalist-the obscura, mactana, viduata-resembling ordinary · Pentatomre, without any posterior thoracic prolongation, but • with quadriarticulated antennre, might also form another subgenus-DINIDOR. A species from Brazil, analogous by its flattened form to the Aradus of that naturalist, in which the edges of the body are dilated, slashed and angular, and its anterior extremity forms a sort of clypeus truncated before, cleft in the middle, unidentated on each side behind, and concealing antennre, geniculate near their middle, and seemingly formed of but three joints because the first is very short, is the type of the subgenus · PHLlEA, Lepel. and Serv.(2) All the following Geocorisre are generally oblong, besides which they present none of the other characters peculiar to the preceding subgenera. Here the antennre are inserted near the lateral and superior borders o£ the head, above an imaginary line drawn from the middle of the eyes to the origin of the labrum. The simple eyes are either ~p- (1) See Fabricius, genera ut sup. (2) Encyc. Method. |
