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. The Australian zoologist. Zoology; Zoology; Zoology. 370 A RECLASSIFICATION OF THE ORDER ODONATA. Family. Eyes separated. Zygopterous ovipositor. Gomphidae + Petaluridae + + Aeshnidae —. + Other characters separating these three families will be found in the key given above. Family I. Gomphidae.. Fig. 7.—Wings of Gomphidae (Ictinogomphus), male. The Gomphidae is a large family containing forms of clearly denned, homogeneous faeies and all coloured black and yellow; sometimes one and sometimes the other colour preponderating. Generally those species con- fined to heavily forested areas are bl

. The Australian zoologist. Zoology; Zoology; Zoology. 370 A RECLASSIFICATION OF THE ORDER ODONATA. Family. Eyes separated. Zygopterous ovipositor. Gomphidae + Petaluridae + + Aeshnidae —. + Other characters separating these three families will be found in the key given above. Family I. Gomphidae.. Fig. 7.—Wings of Gomphidae (Ictinogomphus), male. The Gomphidae is a large family containing forms of clearly denned, homogeneous faeies and all coloured black and yellow; sometimes one and sometimes the other colour preponderating. Generally those species con- fined to heavily forested areas are bl Stock Photo
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Library Book Collection / Alamy Stock Photo

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RJP954

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7.1 MB (503.5 KB Compressed download)

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2089 x 1196 px | 35.4 x 20.3 cm | 13.9 x 8 inches | 150dpi

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. The Australian zoologist. Zoology; Zoology; Zoology. 370 A RECLASSIFICATION OF THE ORDER ODONATA. Family. Eyes separated. Zygopterous ovipositor. Gomphidae + Petaluridae + + Aeshnidae —. + Other characters separating these three families will be found in the key given above. Family I. Gomphidae.. Fig. 7.—Wings of Gomphidae (Ictinogomphus), male. The Gomphidae is a large family containing forms of clearly denned, homogeneous faeies and all coloured black and yellow; sometimes one and sometimes the other colour preponderating. Generally those species con- fined to heavily forested areas are black marked sparingly with yellow, whilst those inhabiting more open country and desert zones, are yellow with more or less dark markings. The wings are always hyaline and un- coloured; the antenodal complex shows but a slight advance on that of Heterophlebia, the secondary veins being more numerous and present in both costal and subcostal spaces as in Liassogomphus. The base of the hindwing, in the male, is strongly angulated and excised, except in the more archaic genera; the discoidal cells are short and of different shape in the fore and hindwings, that of the latter being more elongated. At the base of each cell, another triangular cell appears for the first time—the "sub- triangle", and posterior to this, although in a rudimentary condition, there may be a compact group of cells enclosed by the anal veins and known as the "anal-loop". The head is transversely elongate as in the Zygoptera and the eyes are widely separated. The abdomen varies in shape in the genera, especially in regard to the end segments, the sides of which may be foliately dilated or elongated. The anal appendages of the male are highly specialized, the inferior being strongly bifid and its branches either. 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 m

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