Lestes tenuatus Rambur, 1842

Belle, J., 1997, The genus Lestes (Odonata: Lestidae) Leach, 1815, in Surinam, Zool. Med. Leiden 71 (11), pp. 89-103 : 95

Lestes tenuatus Rambur, 1842

( figs 5-6 , 18-19 , 22 )

Literature.— Rambur, 1842: 245 (as Lestes tenuata ). Calvert, 1909:102. Paulson, 1982:250. De Marmels, 1990: 336.

Type depository.— Male lectotype in the Institut Royal des Sciences Naturelles de Belgique, Brussels .

Lectotype designation of Lestes tenuata Rambur. — This species was described on the basis of males only. It is known that the Rambur types were deposited in the Museum National d'Histoire Naturelle at Paris but Dr Jean Legrand of that museum, in a letter to me dated 23 September 1996, kindly informed me that he could not find them. However, in the Selysian collection at Brussels I found two specimens of the original series. One of the specimens is a male in rather good condition but the apical halves of the right wings, the left hind leg, the right middle leg and both fore legs are broken away. This male is here designated as the lectotype of Lestes tenuata Rambur, 1842 . It has the written pin labels "5.", "martinique", " Lestes tenuata " (probably in Rambur's writing) and " L. tenuata R ♂ " (in Selys' writing), and the printed pin label "80.". To this specimen I have added the written yellow pin label "Lectotype. Det. Jean Belle, 1996".

The paralectotype is a male in very poor condition lacking the head, the abdominal segments 4 to 10, the right hind leg, both fore legs and the apical half of the right fore wing while the thorax has completely been eaten out by tropical scavangers. Attached to the pin of this specimen are a written label " Lest, tenuata ", a written label which reads like "Testhamel" and a printed label "(Martinique)".

Variation.— The Surinam males of Lestes tenuatus have caudal appendages which are in perfect conformity with those of the lectotype but their pectoral colour pattern differs slightly by the lack of a pair of weakly developed metasternal spots (figs 5-6). The males from Surinam have roughly the same dimensions as the lectotype. The dimensions of the Surinam specimens illustrated in this paper: Male.— Total length ca. 44; abdomen 37; hind wing 22.5; costal edge of stigma in fore wing 1.6. Female.— Total length ca. 44; abdomen 37; hind wing 26; costal edge of stigma in fore wing 1.7.

Range.— USA, West Indies (with the island of Martinique as type locality), Central America, the northern countries of South America and Ecuador. In Surinam mainly occurring in the swampy areas of the coastal region.

Figures

Fig. 1, Lestes basidens spec, nov.; 2, Lestes mediorufus Calvert; 3, Lestesforficula Rambur; 4, Lestes curvatus spec, nov.; 5, Lestes tenuatus Rambur; 6, Lestes tenuatus Rambur, lectotype; 7, Lestes edentatus spec, nov.; 8, Lestes trichonus spec, nov.; 9, Lestes sublatus Hagen in Selys. 1-9, pectoral colour pattern [12.5 X 0.63],

Figs 18-19, Lestes tenuatus Rambur; 20-21, Lestesforficula Rambur. 18,20, tenth abdominal segment and caudal appendages of male, dorsal aspect [12.5 X 2.5]; 19,21, the same, left lateral aspect [12.5 X 2.5].

Fig. 22, Lestes tenuatus Rambur; 23, Lestes mediorufus Calvert; 24, Lestes edentatus spec, nov.; 25, Lestes forficula Rambur; 26, Lestes curvatus spec, nov.; 27. Lestes trichonus spec. nov. 22-27, terminal segments of female abdomen, left lateral aspect [6.3 x 2.5].