. Monographs of the Diptera of North America [microform]. Diptera; Insects; Diptères; Insectes. psiLorus. 247 Head purplis]i-l)luc ; the front has, besklcs the ordinary black Jjristk's, no ituhcsci'iu'e ; the naked face is rather densely covered with whitish dust. The small antennui are black ; their second j(»int is beset with only a few short lu'istles ; the arista is of medium size only and has a dorsal position. Proboscis, brownish- yellow ; palpi, blackish-brown. The coloring of the thorax is puri)lish-blue, shining, but changes ui)on its posterior lialf into steel-blue, and before the s-
. Monographs of the Diptera of North America [microform]. Diptera; Insects; Diptères; Insectes. psiLorus. 247 Head purplis]i-l)luc ; the front has, besklcs the ordinary black Jjristk's, no ituhcsci'iu'e ; the naked face is rather densely covered with whitish dust. The small antennui are black ; their second j(»int is beset with only a few short lu'istles ; the arista is of medium size only and has a dorsal position. Proboscis, brownish- yellow ; palpi, blackish-brown. The coloring of the thorax is puri)lish-blue, shining, but changes ui)on its posterior lialf into steel-blue, and before the s-utellum even into a bluish-green. Scutellum greenish-blue. Pleurie black with a greenish reflec- tion, dusted with white. Abdomen metallic-green, shining ; the bristles of the single segments before the hind margin are but of medium length. The hypoi)ygium is small ; the form and color- ing of its appendages cannot be distinguished with certainty in the described specimen, still the si^e of the appendages seems to be but small. Coxie brownish-black, dusted with white, the fore- most with minute whitish hairs and bristles. The slender, rather glabrous femora are , but at the extreme tip, yel- low ; the yellow tibiiE are slender, beset with very short black hairs, which are somewhat more erect on the middle libi*. Tarsi plain, slender, brown, somewhat more brownish-yellow towards the basis ; the four anterior ones are much longer than the tibiie, and their first joint much longer than the four following joints taken together ; the hind ones are hardly of the same length with the tibia), but their first joint is likewise perceptibly longer than the four following joints taken together. Teguhe l)ordered and ciliated with black. AVings brownish-ltlack, the last third, the hind margin, and the greatest part of the anal angle grayish- hyaline ; the fore margin of the wing is fringed, almost ciliated with comparatively long, minute hairs; the hind transverse vein has a
Size: 988px × 2530px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1860, booksubjectinsects, bookyear1864
