On a collection of dragonflies made by members of the 'Skeat expedition' in the Malay peninsula in 1899-1900. Pt. II / by F.F. Laidlaw.

  • Laidlaw, Frank Fortescue, 1876-1963.
Date:
1902
Catalogue details

Licence: In copyright

Credit: On a collection of dragonflies made by members of the 'Skeat expedition' in the Malay peninsula in 1899-1900. Pt. II / by F.F. Laidlaw. Source: Wellcome Collection.

Provider: This material has been provided by The Royal College of Surgeons of England. The original may be consulted at The Royal College of Surgeons of England.

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    CoPERA ATOMARIA (Selys). Copera atomaria Kirby, Oat. Odonata, p. 129. Three females and a male, all immature, from Kwala Aring, in September. The upper anal appendages of the male are fully one-half the length of the lower pair. The second pair of tibias are not dilated, the third pair are unfortunately lost. Pericnemis stictica Sel}^s. Pericnemis stictica Kirby, Oat. Odonata, p. 158; Kriiger, Stett. ent. Zeit. 1898, p. 125. One male from the foot of Gunong Inas. Length of abdomen (without appendages)... 55 mm. This species is one of the largest and in some respects the most remarkable member of the “ legion.” It has previously been recorded from Java and Sumatra, but apparently the appendages of the male have not hitherto been described. These, it will be seen, bear a closer resemblance to those of species belonging to the genus Amphicnemis than to those of species of Teinobasis. The most striking peculiarity of the species, apart from its large size and extremely slender proportions, is the pentagonal shape of the pterostigma, most marked in the fore wing. The pterostigma is brownish black with a lighter margin, the whole surrounded by a thick black nerve. Another remarkable feature is the curious “ horn ” curving upwards and a little forward from the middle of the hinder margin of the prothorax. The upper pair of appendages of the male are rather slender ; they curve inwards and a little downwards. They are black at the base, but for the greater part of their length dull yellow. Each bears rather beyond its middle a small tooth on its upper inner surface. The lower pairs are shorter and much slenderer; they run nearly straight back, converging slightly. Each at its extremity meets the extremity of the upper appendage of its own side. Coloration similar to that of the upper pair. Both pairs are black at the tip. Teinobasis kirbyi, sp. n. A single male, unfortunately much damaged, from Gunong Inas. As it is quite distinct from any described species, it is well, I think, to describe it in spite of its mutilated condition. Length of hind wings 25 mm. Wings petiolated to the level of the commencement of the quadrilateral. Claws smooth, without teeth. Inner margin of Legion Ccenagrion. {Agrion of Selys.) hind wing appendages (upper pair) L'5]