. Monographs of the Diptera of North America [microform]. Diptera; Insects; Diptères; Insectes. INTUODUCTION. 9 Tlic firsl twi) (tf tlicsc cliiii'iicti'iN will ever iiiisIciKJ, if it ItDriic ill iiiinil lliut llicv liiivo lu* value in lln' jiciiiis I'./>iit|»eeilic marks uru but .--liti'litly indirated in the female, and eaii he perceived only l»y a very close oliservation. 'I'ho \m\nl^{i\' \\\{; Jfnlic/iiipDilid/i are, as far as known, ^â¢crierally ])rc(hieeous. ^I(»st ttl' them hunt I'or sinallei' diptera or oiher with soft bodies and suck thcin (.mt. They are u
. Monographs of the Diptera of North America [microform]. Diptera; Insects; Diptères; Insectes. INTUODUCTION. 9 Tlic firsl twi) (tf tlicsc cliiii'iicti'iN will ever iiiisIciKJ, if it ItDriic ill iiiinil lliut llicv liiivo lu* value in lln' jiciiiis I'./>iit|»eeilic marks uru but .--liti'litly indirated in the female, and eaii he perceived only l»y a very close oliservation. 'I'ho \m\nl^{i\' \\\{; Jfnlic/iiipDilid/i are, as far as known, ^â¢crierally ])rc(hieeous. ^I(»st ttl' them hunt I'or sinallei' diptera or oiher with soft bodies and suck thcin (.mt. They are usually rotiml in dani|) jihiccs, covered with a rich vcLi'cialion ; many are jiriiicipally loniid on the leaves of a(|initic |(laiiis, on slmies, jiaiMly overlloun with water, on dams and near walerla II- sonie ol tlieni are able to run rapidly over the water even when it is rippled by wind {//i/(lr(i/i/i(>); other; are fond of salt or brackish waters (Aji/irnsi/h/.-f, Tliiii<)[iliih(!< and some /fi/-h') in wood underu'oiii<i' a process of dry di'cayinu'. After all that has hceu said above, the natural characters of the J)nliclii)ii()(liihr may bo })Ut down as follows : (Jeiicrally metall;(; fi'i'eeii, l)risk and restless diptera of small or nieilinni size, pre(la« tory on other insects and liviiij;' principally in dami* situations; the male sex are ]trincipally distiiiuMiished from the females by dilVereiices in the structure of the feet ; the larvic livinir under fi'roiind or in decayiuir wood. Head hemispherical, eyes larji'e, usiiallv Dot coutiu-uous in both sexes, hairv, feiici'd iti, aloiiu,- the hind border with a row of bristles or hair; Front, with bristles on the vertex onlv, and with three ocelli. Anteiiiia! strctche(| out strai rht, wi th a two-jointed arista. Face, without mystaciiif bristles; its inferior border not meri:Mn<r into the lateral itorder of the mouth. Oral openinir occupying- the wlado underside of the liead
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Keywords: ., bookcentury1800, bookdecade1860, booksubjectinsects, bookyear1864
