. Monographs of the Diptera of North America [microform] / prepared for the Smithsonian Institution by R. Osten Sacken. Diptera; Insects; Diptères; Insectes. pKimiA. i2Tl ,\l)(l()tncn brown, litlcrnl ami posicrjdr inaririiis of tlic scirnifiits jiiilf ; riiali' Ion-ops ami tlio l»asi«.- of tlif o\ i|H(sit(ir yclluwisli. l-'ccr Ijrowiiisli, )talt! at tlu' basis; spurs at thr tip of tlic tiitiu' very small. Wiiiji's faintly tinjri'il witii bruwni>li ; >i.\ nr seven pale liiDwii cluinls aJoMjjf the anterior niaririn, ami snniller eioudft at till' tips of "llie veins aloi;;^ the p(»
. Monographs of the Diptera of North America [microform] / prepared for the Smithsonian Institution by R. Osten Sacken. Diptera; Insects; Diptères; Insectes. pKimiA. i2Tl ,\l)(l()tncn brown, litlcrnl ami posicrjdr inaririiis of tlic scirnifiits jiiilf ; riiali' Ion-ops ami tlio l»asi«.- of tlif o\ i|H(sit(ir yclluwisli. l-'ccr Ijrowiiisli, )talt! at tlu' basis; spurs at thr tip of tlic tiitiu' very small. Wiiiji's faintly tinjri'il witii bruwni>li ; >i.\ nr seven pale liiDwii cluinls aJoMjjf the anterior niaririn, ami snniller eioudft at till' tips of "llie veins aloi;;^ the p(»>terior niarjrin ; ern>s-vein> ami iiimr emls of tlic forks likewise elnmled. The nio>t striking iV'iitiin' of the venation is the 'th of the fonrlh posterior cell, the inner eml of whieh is in one line with the inm-r emls of tli(! lit'tli posterior and of the diseul cell; the .-eeond >nlnnarginal cell is shorter than the lirst ; the jtetiole of the former is not half so loiiLf as the prii'fnrea ; the oritrin of the pra-furea has a stnnip of a vein ; the second posterior cell is usinilly sessile, sonniimt'S petiolate ; the subcostal cross-vein is anterior to the origin of the priefiirea Iiy three or four len'rths of the irreat cross-vein. lldl). Whito Mountains, >. II , iu June; Washington, D. C, early in the spring. Oen. XXXVI. Two sulnnaiginnl cells : five jjosterinr t-flls : (liscal cell closed ; the puli- cross-vein is nearly opposite or a slmrt ili>taiiie lii-tore tln' (iriu'iu of tlie secoiiil loii<;ituut a loiii: distance tx fore the tip of the auxiliary vein; the first siiliiii;'ri.'inal cell is lonui-r than the second : the ct'iitial cross-Veins run in a very (ililii|ne direction, almost j>arallel to the poster. ⢠martin ; the latter is somewhat sinuated in the male, near the api'x of the wing, which is thus ilrawn out in a jwiint, instcul of liein;; MUiided, as usual. Tihiic witli sj>urs at the tip : enip
Size: 1302px × 1920px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1860, booksubjectd, booksubjectinsects
