. Class book of economic entomology, with special reference to the economic insects of the northern United States and Canada. Beneficial insects; Insect pests; Insects; Insects. CLASSIFICATION AND DESCRIPTION OF COMMON INSECTS 269 C. Last section of fourth vein (Mi^.2) with a rounded angle.â Musca. CC. Last section of fourth vein curved forward, often slightly, beyond / anterior dorso centrals aide â¢â inner - a. ia â â intraalar h liumerals post " * '\ps. presutural Scute Hum hdc posterior dorso centrals â ⢠inner â¢â¢ intraalar pra prealar=anterior sa sa supra alar
. Class book of economic entomology, with special reference to the economic insects of the northern United States and Canada. Beneficial insects; Insect pests; Insects; Insects. CLASSIFICATION AND DESCRIPTION OF COMMON INSECTS 269 C. Last section of fourth vein (Mi^.2) with a rounded angle.â Musca. CC. Last section of fourth vein curved forward, often slightly, beyond / anterior dorso centrals aide â¢â inner - a. ia â â intraalar h liumerals post " * '\ps. presutural Scute Hum hdc posterior dorso centrals â ⢠inner â¢â¢ intraalar pra prealar=anterior sa sa supra alar sq. \ -(Lower squamar \jjisq.\ \ ^^'\squamula thoracal is â ^ \5quamula a/aris Vertical -Ocelli prbitals ⢠--â¢- ⢠\^ ^Transi/erse suture , , a. Ida. ...Pjdc â ⢠⢠>./) 2/4,.. }.^-- ./^53, â Ocellar. Antenna r^lil^^-Vibrissal ndges Oralmargin Vibrissa ^Palpus Proboscis Fig. 171.âDorsal aspects of the thorax, and frontal aspect of the head of a muscoidean fly, with designations of the parts commonly used in taxonomic work. {After Riley and Johannsen, Comstock Pub. Co., Ithaca, N. Y.) its middle or at the tip, the cell broadly open; the first longitudinal vein (Ri) ending beyond the middle of the wing.âMuscina. BBB. Arista plumose; hypopleurae and eyes as in B; vibrissal angle, near oral Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Lochhead, William, 1864-. Philadelphia, Blakiston
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectinsects, bookyear1919
