. Natural history. Zoology. DRAGONFLIES, MAYFLIES, &=€. 571 Lace-winged Flies (Chrynopida:). which they dig in sandy soil, to entrap the ants and other insects on which they feed. The Ascalaphidcu are another family not represented in Britain, but which has also several representatives in Southern Europe. It is distinguished by its very long. Family clubbed antennje. In the typical genus Ascalaphus (Fabr.), AscalaphiJai. the wings are black and yellow, and broader and shorter than in the Myrmeleonidce; but in many of the allied tropical genera, the wings are longer, narrower, and mostly tr
. Natural history. Zoology. DRAGONFLIES, MAYFLIES, &=€. 571 Lace-winged Flies (Chrynopida:). which they dig in sandy soil, to entrap the ants and other insects on which they feed. The Ascalaphidcu are another family not represented in Britain, but which has also several representatives in Southern Europe. It is distinguished by its very long. Family clubbed antennje. In the typical genus Ascalaphus (Fabr.), AscalaphiJai. the wings are black and yellow, and broader and shorter than in the Myrmeleonidce; but in many of the allied tropical genera, the wings are longer, narrower, and mostly transparent. A third allied family, the Nemopteridce, not British, and not extending so far south as the others, being confined in Europe to the shores of the Mediterranean, has rather short and slender antennse, broad. Family oval, black and yellow fore-wings, and very long and narrow Nemopttridm. hind-wings, looking, when the insect is held head upwards, almost like a pair of stilts. The fore-wings measure about an inch and a half in expanse, but the curious narrow hind-wings are nearly two inches long. The most interesting British species of Planipennia belong to the Chrysopida, or lace-winged flies, which have bright green bodies, long slender antennte, golden eyes, and trans- parent, delicately reticulated wings, rarely exceeding an inch in expanse. Their larvse are very useful in gardens by destroying the Aphides, or plant-lice. The Ephemeridw, which are generally called May-flies, or Day-flies, fly oyer streams in summer. They have long, slender antennas, slender bodies, ending in two or three long fila- ments, broad fore-wings, about May-FUes an inch and a half in expanse, {Ephemeridct). and very small, or undeveloped hind-wings. Their larvse are aquatic, and take several months to arrive at maturity ; but the perfect insects live a very short time. They are insects of dull colours, brown, greenish, dull grey, or whitish ; and on the Continent there are several white sp
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Keywords: ., bookauthorly, bookcentury1800, bookdecade1890, booksubjectzoology
