Volume 1, 1998
Instructions to Authors
Tetrathemis polleni, its reproductive behaviour and preferred habitat
A few Odonata from Ethiopia
The distribution and relative abundance of the sibling species Orthemis ferruginea (Fabricius, 1775) and O. discolor(Burmeister, 1839) in North and Middle America (Anisoptera: Libellulidae)
The sibling species Orthemis discolor and O. ferruginea are distinguished by coloration, although one structural characteristic can be used to differentiate many females. Further information on the distribution and relative abundance of the two species in North and Middle America is presented.
Ecology and distribution of Lindenia tetraphylla (Insecta, Odonata, Gomphidae): A review
Information (published and unpublished) on ecology, phenology, and geographical distribution of Lindenia tetraphylla is reviewed. It reaches from Sardinia (Italy; in the past also Spain) in the West, along the northern coasts of the Mediterranean, the Caspian region and the Middle East, to Kazakhstan, Kirgizia, Afghanistan, and Pakistan in the East. The southernmost record is…
New fossil damselflies from Baltic Amber, with description of a new species, a redescription of Litheuphaea carpenteri Fraser, and a discussion on the phylogeny of Epallagidae (Zygotera: Caloptera)
Litheuphaea ludwigi sp. n. is described as first representative of Epallagidae from Baltic amber. The holotype of Litheuphaea carpenteri Fraser, 1955 is redescribed, the phylogenetic position of all fossil Epallagidae is discussed, and a new phylogenetic classification is proposed. The authorship of Selys (1853) for the family-group name Euphaeidae is rejected, since the “légion Euphaea”…
Comparative studies on the compound eyes of larvae and adults of an aeschnid dragonfly, Anax nigrofasciatus nigrofasciatus. (I) Dorsal part
In the dragonfly Anax nigrofasciatus nigrofasciatus (Aeshnidae, Anisoptera), the X-tissue is the tissue which occupies the posterior corner of the larval eye and which forms the large facet region in the dorsal part of the adult compound eye after emergence. In the early period of the last larval instar, an ommatidial retinula of the X-tissue…
Body temperature regulation in a late-season dragonfly, Sympetrum vicinum (Odonata: Libellulidae)
Body temperature regulation and behavioral responses to temperature variation in the field were investigated in Sympetrum vicinum, a common North American libellulid that is most abundant as a mature adult in autumn. Because of its late flight season, this species is faced regularly with cooler environmental temperatures than most dragonflies investigated heretofore. By virtue of…
Editorial
Editorial Board (1998–2001)
Volume 1, Issue 1
Volume 1, Issue 2
Instructions to Authors
Post-copulatory behaviour in Calopteryx females (Insecta, Odonata, Calopterygidae)
The post-copulatory behaviour of Calopteryx splendens females was studied under field and laboratory conditions. After termination of copulation females usually perch and bend the abdomen so that its apex touches the ground (post-copulatory posture). The post-copulatory posture is a consequence of sperm removal by males. Male and female microstructures (spines and scales) interact to move…
The Gambia: Additions to the list of Odonata, and further distribution records
As a result of the British Dragonfly Society visit to The Gambia in Oct/Nov 1996, 13 species of Odonata were added to the 62 previously recorded, and distribution records of species increased by over 60%.
The genus Pseudagrion (Odonata: Zygoptera) in Iran
Two species of Pseudagrion are reported from Baluchistan-Seistan, South-East Iran. P. decorum is an Oriental, and P. cf laidlawi a south-east Palaearctic species with Oriental affinities.
Orthetrum julia falsum Longfield 1955, new to the dragonfly fauna of Yemen and the Arabian Penunsula (Anisoptera: Libellulidae)
Orthetrum julia (Kirby 1900), subspecies falsum Longfield 1955, is reported for the first time from Yemen and the Arabian Peninsula (1 male, Wadi al-Ahjar, 15°27’53″N 43°52’32″E). The specimen is described and compared with specimens from Africa; taxonomically relevant structures are figured. The total number of species known from Yemen is raised to 37, from the…
Macrothemis fallax, a new species of dragonfly from Central America (Anisoptera: Libellulidae), with a key to male Macrothemis
Macrothemis fallax spec., nov is described and figured from males collected in Belize and central Panama. It is apparently closely related to the widespread species, M. pseudimitans Calvert, 1898, with which it has hitherto been confused. These two species differ in shape of the cerci and epiproct, metafemoral armature, and thoracic and tibial coloration. A…
Postponed reproductive maturation in upland refuges maintains life-cycle continuity during the hot, dry season in Algerian dragonflies (Anisoptera)
Anisoptera were monitored or sampled regularly at lowland and nearby upland sites in northeastern Algeria during 1992 and 1993. After emerging in lowlands at about sea level in May and June, adults disappeared from lowlands and were then soon encountered in nearby hills at ca 500-1000 m a.s.l. where they aestivated in woodland for about…
Sex ratio of Odonata at emergence
Final-instar exuviae left at the emergence site by Odonata can provide information of high quality for measuring sex ratio, especially of Anisoptera. Criteria are listed according to which counts of such exuviae are acceptable for this purpose. Records of sex ratio of Odonata, published and unpublished, are critically reviewed, and 194 that meet the listed…
