OCR Text |
Show 484 INSECTA. bimaculatua lives in the root of the Eryngium campestre, where it also undergoes its metamorphosis( 1 ). MvoniTES, Lat.-Ripidius, Thunb.-Ripipltorus, Oliv. Fab., &:c. Where the wings are also extended, but the elytra very short, in the form of a truncated scale, or very obtuse at the extremity. · The hooks of the tarsi are indented beneath. 'fhe antennre are inse1'ted on the summit of the head, and strongly pectinaled in both sexes.:.. on the two sides and forming long filaments in the males, and on the inner side only in the females. The maxillre are but slightly prolonged. The ligula is elongated and entire(2). PELOOOTOMA, Fisch.-Ripiphorus, Payk. Gyll. These Insects approach the Myodites in the serrated hooks of their tarsi; but their wings are covered by the elytra. The antennre, in· · serted before the eyes, have but a single range of filaments or teeth in both sexes. The scutellum is very apparent. The maxillc:e do not project, and the ligula is emarginated(3). In the others, the wings are always covered by elytra extended almost t.o the extremity of the abdomen and tapering to a point. The posterior margin of the thorax is not lobate, or but very slightly so. The abdomen of the females terminates in the manner of a tail, pointed at the end. The eyes are sometimes emarginated. Th~ maxillary palpi are terminated by a large joint, sccuriform, orlikea reversed triangle. The extremity of the mandibles is emarginated or bifid. The antennre, even in the males, are at most serrated. In MoRDELLA, Lin. Fab. Or Mordella properly so called, the antennre are of equal thick· ness throughout, and somewhat serrated in the males; all the joints of the tarsi are entire, and the hooks of the last present one or two indentations ben.eath. The eyes are not emarginated. M. Leon Dufour has observed in the Mordelle a bandes, two float· ing salivary vessels longer than the body. The hepatic vessels have no crecal insertion, an exceptive character in this section. M. aculeata, L.; Oliv., Col., III, 64, 1, 2. Length two lines; black glossy immaculate with a silky down; an ovipositor as ' ' ' . long as the thorax, by means of which it introduces its ova mto the cavities of old wood( 4). (1) See the Nouv. Diet. tl'Hist. Nat., Ed. II, article Ripiphrlre. (2) Ibid., article Myode. (3) Ibid., article Pelocotome,· Fisch., Entom. Imp. Russ., II, xxxvii, 9. Several species are found in Brazil. (4) Add the following species of Olivier: fasciata, duodecim-punctaJa, octo·punc- COLEOPTERA, 485 ANASPis, Geoff.-Mordella, Lin. Fab. Di!tinguished from the preceding by the antennre, which are simple, and gradu.ally enl~rge by t.he emargination of the e}•es, and by the four anteriOr tarsi, of wh1ch the penultimate joint is bilobate. The hooks of the last are entire and without sensible indentations( 1 ). In the fourth tribe, that of the ANTHICIDEs, we :find the antennre simple or slightly serrate, :filiform, or a little thicker towards the extremity, most of the joints being nearly obconical and almost similar, with the exception of the last, (and sometimes also of the two preceding ones), which is somewhat larger and oval. The maxillary palpi are terminated by a securiform club; the penultimate joint of the ta:r:s~ is bilobate; the body is narrower before, and the eyes are entire or but slightly emarginated. The thorax is sometimes obovoid, narrowed and truncated posteriorly, sometimes divided into two knots, and at others semicircular. Some of these Insects are found on various plants, but the greater number live on the ground. They run with great quickness. .Their. larvre are perhaps parasitical. · They will compose the genus N OToxus, Geoff. SoRAPTIA, Lat.-Serropalpua, Illig. Which, by the almost semicircular, transversal thorax, the filiform antenrire with almost cylindrical joints inserted in a little emargination of the eyes, are easily distinguished from all other Insects of this tribe. Their port is very analogous to that of the Mordellre, Cistelre, &c.( 2) tata, abdominalia. See also Fisch., Entomog. Imp. Russ., 11, xxxviii, fig. 3, 4. llis genus Ctenopus-Ibid, tab. ead., fig. 1-appears to form the transition from the Pelocotomre to the Mordellre. The antenna: are simple; the labrum is bifid; the mandibles are strong and arcuated: the maxillary palpi are very long and almost filiform; all the joints of the tarsi are entire, and the hooks of the last are pectinated. (1) Fischer, Jb.; .O.naspia frontalis, tab. ead., f. S;-laterali1, f. 6;-thoracica, f. '1;-ftava, f. 8, (2) Lat., Gener. Crust. et Insect., U, p. 195. |