. Australian insects. Insects. ;362 liOMOPTERA. the central one at the apex of the median suture. The antennae are each composed of ten joints, the first two shorter and thicker than the following ones, and the termin- al joint surmounted with two short bristles. The thorax is broad, with well devdoped- tegmina and wings, and like the aphids both pairs might properly be called wings. The venation is simple, constant, and useful in the work of I. Fig. 160.—Piaofram of Psylla (Thea opacn) ^ . Showing the structure and venation of the winfrs. la, Face lobes ; 2a, prothorax ; 3a, mesanotuin ; ia,
. Australian insects. Insects. ;362 liOMOPTERA. the central one at the apex of the median suture. The antennae are each composed of ten joints, the first two shorter and thicker than the following ones, and the termin- al joint surmounted with two short bristles. The thorax is broad, with well devdoped- tegmina and wings, and like the aphids both pairs might properly be called wings. The venation is simple, constant, and useful in the work of I. Fig. 160.—Piaofram of Psylla (Thea opacn) ^ . Showing the structure and venation of the winfrs. la, Face lobes ; 2a, prothorax ; 3a, mesanotuin ; ia, dorsuluni ; 5a, scutelluni, tegmina ; 16, costal nervure ; 26, primary stalk ; 36, clavus ; 46, clavical suture ; 56, stalk of sub-costa ; 6a, stalk of cubitus; 76, sub-costa ; 86, lower branch of cubitus; 96, upper branch of cubitus ; 106, lower fork of lower cubitus ; 116, stigma ; 126. u|i]iei- fork of the lower branch of cubitus ; 136, radius; 146, lower fork of upper cubitus ; ]:./per tV)ik of upper cubitus. 3, Genitalia ^; 4, Genitalia ^; 5, ]\i'n<\ of Sj/iindiiliaspiseucalypti, sho\ying face \ohes. (Pro. Linn. Soc. ) classification. Thev are formed for jumping, with a spine- like process on the coxa of each hind leg, and the apex of the tibiae of the hind legs furnished with a row of short fine spines. The tarsi are two jointed, terminating in a l)air of large claws. The female lays her eggs in clusters on the twigs or foliage, from which the curious, little, large-headed larvae 'emerge, and, after undergoing a series of moults during. 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 Froggatt, W. W. (Walter Wilson), 1858-; Metcalf Collection (North Carolina State University). NCRS; Tippmann Collection (North Carolina State University). NCRS. Sydney, W. Brooks
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Keywords: ., bookauthorti, bookcentury1900, bookdecade1900, booksubjectinsects
