Trockenzeit-Libellen aus dem indischen Tiefland (Odonata)

Abstract

Dry Season Dragonflies of Indian LowlandsOnly some 60 species, i.e., about 10% of the dragonfly fauna of the Indian subcontinent can be observed during the premonsunal dry season in the plains of India. 42 of them (table 1) were registrdted by the author on excursions in New Delhi, Calcutta, Madras, Trivandrum and the surroundings of these large towns in the last decade of April and in May 1979. 260 specimens have been catched for collection, between them two males and one female of a hitherto unknown species (Agriocnemis keralensis), whose description is given in English (fig. 1). Excluding Pantala ,flavescens in southern India and possibly Brachythemis contaminata throughout the whole country, imaginal specimens of all species were very scarse in numbers and the pupulations were found isolated in restricted favourable localities. The deficiency of oxygen in the upheated water bodies seems to be the main reason for the seasonal scantiness of dragonflies in the Indian lowlands. About 30% of the dry season dragonfly species are distributed well beyond the borders of the Oriental zoogeographic region, whereas only some 3 % of the mountain species are not restricted to this region. This comparision shows very clear the high degree of adaptive abilities and vitality of the lowland dragonflies.

New spatial records of three Odonata species from the Western Ghats, India (Coenagrionidae, Aeshnidae)

“…To strengthen the knowledge of odonate species distribution, several surveys were carried out in different parts of the Western Ghats Biodiversity Hotspot for about two years. In the present communication we report new spatial records for three odonates, namely, Agriocnemis keralensis Peters, 1981 for the first time from the State of Karnataka; Pseudagrion spencei Fraser, 1922 as an addition to the Odonata list of the Western Ghats, and record of Gynacantha khasiaca MacLachlan, 1896 representing its northernmost range in the Western Ghats.…”

“…Remarks. A. keralensis was described based on three specimens collected from Karamana, Thiruvananthapuram, Kerala (Peters 1981).…”

A checklist of the dragonflies (Odonata) of Kenya

“…Crocothemis divisa is mentioned only once for Kenya by Pinhey (1962) without a specific locality. Crocothemis erythraea is regarded by Pinhey (1979) as a subspecies of C. servilia , which should be named C. servilia erythrea; this has been withdrawn by Peters (1981). Both are definitely considered as separate species.…”

Diversity of Dragonflies (Insecta: Odonata) in a Deciduous Forest of Thoothukudi District, Tamil Nadu, South India

“…The odonate fauna of Kerala is well documented, some of the prominent works include [11,12,13,14,15,16,17,18,19,20,21,22,23,24,25], which provided information regarding the status and distribution of odonates in different parts of Kerala. Total of 23 species belonging to 13 genera and 4 families were recorded from Sindhudurg district, Maharashtra, India [26]; total of 26 species of dragonflies (sub-order Anisoptera) belonging to 3 families were recorded from the Bodoland University between May 2013 to November 2014 [27]; 21 species of odonates were recorded from Coimbatore and Salem districts in Tamil Nadu [28]; 66 species of odonates from the state of Goa [29]; 13 more species of odonates from the state of Goa [30]; and 52 species of odonates from Kerala Agricultural University Campus, Thrissur, Kerala.…”