The black fly of citrus and other subtropical plants . es on thoracic portion of dorsum, two short pairs nearmeson, a longer pair near cephalic margin of case, and four pairs outlining boundariesof thoracic segments of pupa case, the pair nearest to eye spots being mm. inlength, the pair at dorsal portion of thorax mm. in length, the other two shortand stout. A pair of long, slender setae situated cephalad and caudad of the vasiformorifice, and a short, stout pair on the metathorax near the meson. Dorsum slightlyarched. Color dark brown. FOURTH LARVAL INSTAR OR PUPA. Plate X, D. Size
The black fly of citrus and other subtropical plants . es on thoracic portion of dorsum, two short pairs nearmeson, a longer pair near cephalic margin of case, and four pairs outlining boundariesof thoracic segments of pupa case, the pair nearest to eye spots being mm. inlength, the pair at dorsal portion of thorax mm. in length, the other two shortand stout. A pair of long, slender setae situated cephalad and caudad of the vasiformorifice, and a short, stout pair on the metathorax near the meson. Dorsum slightlyarched. Color dark brown. FOURTH LARVAL INSTAR OR PUPA. Plate X, D. Size variable, averaging mm. to mm.; shape regularly elliptical with dorsumarched; median ridge high, but not markedly distinct from dorsal area, exceptingnear the caudal portion of abdomen and at vasiform orifice, which is elevated into amore or less prominent tubercle. Color dense black, so much so that even prolongedboiling in potassium hydroxid does not remove the color. When the denser dorsal Bui. 885, U. S. Dept. of Agriculture. Plate X. A. The Black Fly. A, Larva, first instar; B, larva, second instar; C, larva, third instar; D, pupa case; E, vasiforniorifice of pupa case; F, margin of pupa case. Bui. 885, U. S. Dept. of Agriculture
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Keywords: ., bookcentury1900, bookdecade1920, bookidblackflyofci, bookyear1920
