OCR Text |
Show 334 INSECTA. isometrical, as wide as the head, and narrower than the elytra· th antennre usually filiform, with elongated joints( 1 ). ' ~ There the palpi are subulate. MxaROPEPLus, Lat. Antennre terminating in a solid club, and lodged in fossulre of the thorax(2). PnoTEINus, Lat. Antennre granose, somewhat perfoliaceous, and larger at the end but clavate, always exposed, and inserted before the eyes; thor~ short; elytra covering the greater part of the abdomen(3). ALEOOHARA, Grav. The antennre inserted between the eyes or near their inferior mar. gin and exposed at base, with the three first joints evidently longer than the following ones, which are perfoliate, the last elongated and conical; thorax nearly oval, or a square rounded at the angles(4). In the fifth section-MxoROOEPHALA-the head is plunged poste· riorly into the thorax, nearly up to the eyes; it is neither separated by a neck, nor by a visible strangulation; the thorax forms a trape· zium, and is widened from before backwards. The body is less elongated than in the preceding section, and ap· proaches more to an ellipsis; the head is much narrower, contracted and projected forwards, and the mandibles are of a moderate siz~ edentated, and simply arcuated at the point. The elytra, in several, cover rather more than the half of the length of the top of the ab· domen. Some live on flowers and mushrooms, and others in dung. Fabricius placed several species among the Oxypori. ( 1) See Latr., Gener. Crust. et Insect., I, 296, 297; Gravenhorst and Gyllenh~ genus .llnthopltagua. (2) See Lat. Gener. Crust. et Insect., IV, 377; Omalium porcatum, Gyll., In· sect. Suec., I, pars II, p . 211; Micropeplua porcatua, Charp., Hora: Entom., Vlll, 9;-0. ataphylinoidea, Gyll., lb. p. 213. (3) See Lat., lb. I, p. 298, and the Omal. ovatum and macropterum of Graven· horst. (4) Staphylinua canaliculatua, Fab.; Panz., lb., XXVII, 13;-Staphylinwim· preaaua, Oliv., Col., lb., v, 41;-S. boleti, L.; Oliv., Col., Ib., ii~ 25;-S. col/arU, ejusd., lb. vi, 53 ;-S. aocialia, ejusd., lb., iii, ~5, and generally the three firstfami· lies of the genus .llleochara, of Gravenhorst, Col. Mic., II. See also Gyllenh~, Insect. Suec. I, pars II, p. 377. We should remark, however, that neither th~ author nor Gravenhorst has assigned clear and rigorous characters to the Aleochan: and Lomechusa:; both these genera demand revision. COLEOPTEliA. 335 LoMEOHUSA, ALEOOHARA, Grav. No spines on the tibire; the antennre, from the fourth joint, form- 1. 0g a pe rfoliaceous mass, or elongated and fusiform; palpi subulate; anten n.".".. frequently shorter than the head and thorax(!). TAoHINus, Grav. Tibi~ spinous; antennre composed of pyriform joints, and insen· sibly enlarging; palpi filiform(2). TAoHYPonus, Grav. Similar to Tachinus in the tibire and antennre, but the termination of the palpi is subulate(3). The genus CALLIOERus, Gravenhorst, is unknown to me. The SrENOSTHETUS of Megerle, mentioned in the Catalogue, &c. of Dejean, presents all the characters of ~ t~ue Psela.phus, and must be suppressed-such also is now the opm10n of th1s last named naturalist. (I) In some, the thorax is smooth and without an elevated margin; sue~ are the Aleochara: bipunctata, lanuginosa, nitida (Staphyli~~a bipuatulatua, L.; ~liv., Col., 111,42, v, 44), fumata, nana, Gravenh., or his fam1lies UI-VI, Col. M1crop., II. The margin of the thorax is turned up in the others forming his genus Lomechuaa,L. paraiioxa; Staphylinua emarginatua, Oliv., lb., ii, 12 ;-L. de:ntata, Grav.; Sta. phylinua atrumosua, Payk., V. (2) Oxyporua aubterraneua, Fa b. ;-0. bipuatulatua, ejusd., Panz ., Faun. Insect. Germ., XVI, 21;-0. marginellua, Panz., lb., IX, 13; Staphylinua fuacipea, lb., XXVII, 12;-0xyporua auturalia, lb., XVIII, 20;-0. pygmreua, lb., 27;-0. lu~ulatw, Ibid., XXII, 19, 15;-Staphylinua atricapillua, J.!'.;-Oxyp01'U8 merdanua, Panz., Ibid., XXVI, 18;-Staphylinua atriatua, Oliv., lb., v, 47; 8. lunatua, L. See also for this as well as the following subgenus, the Insect. Suec., Gyll., I, pars I. Some ;xcellent remarks will there be found respecting the sexua~ differences of several species, the application of which may be rendered hlghly useful. . Those Tachini in which as in the at1icapillua, the thorax is nearly as long as 1t is wide, the mu~zle adva~ces, the four posterior tarsi are evidently longer than their respective tibia:, appear to form a particular division. . (3) Oxyporua rujipea, Fab., Panz., lb., XXVli, 20;-0. ma;gtnatua, F.; Panz., lb., 17;-0. cltrysomelinua, Fab.; Panz., lb., JX, 14;-0. analta, Fab.; Panz., lb., XXII, 16;-0. abdominalia, Fab. |