. Elementary text-book of zoology, general part and special part: protozoa to insecta. Animals. 562 IKSECTA. winged insect, which is now in the subimago stage, undergoes another ccdysis and becomes an imago. Ephemera vulgata L. (fig. 4C5). Palingcnia longu canda Oliv. Fam. Libellulidae. Dragon flies. Large slenderly-built insects with freely moveable, transversely cylindrical head, short six- to seven-jointed thin and pointed antennns, and four large net-like latticed wings. The mouth parts arc powerfully developed, and are covered by the large upper lip. Tlie maxilla; have fused horny lobe, a
. Elementary text-book of zoology, general part and special part: protozoa to insecta. Animals. 562 IKSECTA. winged insect, which is now in the subimago stage, undergoes another ccdysis and becomes an imago. Ephemera vulgata L. (fig. 4C5). Palingcnia longu canda Oliv. Fam. Libellulidae. Dragon flies. Large slenderly-built insects with freely moveable, transversely cylindrical head, short six- to seven-jointed thin and pointed antennns, and four large net-like latticed wings. The mouth parts arc powerfully developed, and are covered by the large upper lip. Tlie maxilla; have fused horny lobe, and single-jointed sickle-shaped palp. The labium has a simple or divided internal lobe and' separate outer lobes fused with the bi-jointcd palp. The abdomen has ten joints, and on the last segment two unjointed anal styles opposed to one another, so as to form a sort of forceps. They live near water, and feed on other insects. The two sexes are usually of different colours, and their flight is rapid and prolonged. During copulation the male clasps the prothorax of the female with his abdominal forceps, while she bends her abdomen towards the base of his abdomen. Here is placed the copulatory organ, which is remote from the genital opening, and is filled with sperm prior to copulation. The larvaj live in water and are predaceous. The ^ower lip is modified to form a special predatory apparatus (the mask) (fig. 456). Many of them breathe by means of tracheal gills, which are placed at the end of the abdomen or in the rectum. Caloj>teri/.v rirfjo L., Agvlon puella L., ^schna graiidis L., Lihcllula vulgata, flavcola L. Order 3.—Neuroptera.* Insects ivith biting {sometimes also suctorial) mouth jid'Tts, with free prothorax and mem- branous wings, the nervicres of which form a net-work. The metamoriyhosis is complete. Most Neuroptera have an outward re- FiQ. .,«orj,a communr, gemblaiice to the Libellididoi and Ephemerida', (regac animal). _ ... while others resemble the
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectanimals, bookyear1892
