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Over de libellenfauna van Meijendel is weinig bekend. In het volgende overzicht is gebruik gemaakt van een aantal vroegere gegevens en van recent materiaal, dat in Meijendel gedurende de laatste tien jaren meer gericht is verzameld. In de collecties van het Rijksmuseum van Natuurlijke Historie bevinden zich imagines die tussen 1849 en 1976 te Meijendel zijn verzameld; deze zijn alle in de materiaallijsten van de soorten opgenoemd. Daarnaast is door een onzer (E. J. van N.) bij zijn onderzoek naar de waterwantsen en waterkevers van Meijendel gedurende de periode van 1970 tot 1977, een collectie van ca. 250 libellenlarven bijeengebracht en gedetermineerd. Hiermede kon het broeden van elf soorten libellen in dit duingebied aangetoond worden. Bovendien bleek er de aanwezigheid van Anax imperator, een grote Aeshnide, waarvan de imagines tot op heden ter plaatse niet zijn waargenomen. Het aantal van Meijendel bekende soorten libellen steeg diaarmee tot 17. Tussen 1970 en 1971 werd ook een kleine collectie libellenlarven door W. J. Kuijper verzameld, tijdens zijn onderzoek naar de watermollusken van Meijendel. Ook deze larven zijn ter documentatie aan de collecties van het Rijksmuseum van Natuurlijke Historie toegevoegd. Voor de kaartjes met de vindplaatsen en de gebruikte codes ter aanduiding van kwelplassen en infiltratieresevoirs in Meijendel zij verwezen naar Van Nieukerken & Van Tol (1978). In het hier gegeven overzicht zijn ook gegevens verwerkt van soorten, die uit de omgeving van Meijendel bekend zijn geworden, maar in het terrein van onderzoek niet zijn aangetroffen. De namen van deze soorten (9) zijn in de tekst tussen rechte haken geplaatst. De samenstelling van dit overzicht heeft ten doel een inzicht te verschaffen

A revised classification of the Holarctic genera of Nepticulidae is provided. Eight genera belonging to the nominal subfamily are recognised and redefined. They are Enteucha Meyrick (= Johanssonia Borkowski, Artaversala Davis, Oligoneura Davis), Stigmella Schrank (including Astigmella Puplesis), Simplimorpha Scoble in the Nepticulini and Acalyptris Meyrick ( = Microcalyptris Braun, Niepeltia Strand), Trifurcula Zeller, Parafomoria Van Nieukerken, Bohemannia Stainton and Ectoedemia Busck in the Trifurculini. Trifurcula is divided into the subgenera Glaucolepis Braun (= Fedalmia Beirne), Levarchama Beirne and Trifurcula s.str. Ectoedemia is divided into the subgenera Etainia Beirne, Fomoria Beirne, Laqueus Scoble, Zimmermannia Hering and Ectoedemia s.str. The genera and subgenera are (re)described and data on biology and distribution are given. The species Simplimorpha promissa (Staudinger) and Acalyptris psammophricta Meyrick are redescribed. A phylogeny of the family in cladistic sense is presented and discussed. The monophyly of Ectoedemia is uncertain, and monophyly of the subgenus Fomoria could not be demonstrated. Current opinions about the phylogenetic position of the Nepticulidae and the division of the Heteroneura are reviewed and discussed. The biogeography and hostplant relationships of the family are reviewed.

Eleven species of Nepticulidae are recorded from the Netherlands for the first time. Eight of these have been collected as larvae during recent field work: Ecroedernia hannoverella (Glitz), E. nlediofasciella (Haworth), E. spirzosella (Joannis). E. arcz~arella (Herrich- Schaffer). Trifurcula cryptella (Stainton), Stigmella aeneofusciella (Herrich-Schaffer). S. poterii (Stainton), and S. crataegella Klimesch. On the basis of old collection material E. longicaudella Klimesch, E. bradfordi Emmet and S. svenssoni (Johansson) can be added to the list. A single specimen of E. bradfordi appears to be only the second one known. Some notes on rare species are given. S. regiella (Frey) is recorded for the first time from Belgium.

Verslag van een doctoraalonderwerp van 12 maanden bij de vakgroep Oecologie, Rijksuniversiteit Leiden, 1974-1977

Eratophyes aleatrix Dialionoff. 1975. hitherto only known from The Netherlands. is synonymised with Lampros amasiella Herrich-Schaefer. 1851, described from Anatolia.

A revised checklist of Dutch Nepticulidae is provided, together with some nomenclatorial and systematic notes.

Parafomoria halimivora n. sp. is described from southern Spain. It feeds on Halimium spp., and is assumed to be the sister-species of P. helianthemella (Herrich-Schaffer). The mine and larva of P. ladaniphila (Mendes) are described and new distribution and hostplant data for the genus are given.

This is the third annual compilation of Microlepidoptera collected in The Netherlands. The following six species are here recorded for the first time from The Netherlands: Trifurcula eurema (Tutt) (Nepticulidae), reared from Lotus uliginosus in the Isle of Terschelling: Heliozela hammoniella Sorhagen (Heliozelidae), reared from mines and collected as adults flying over Betula saplings: Caloptilia populetorum Zeller (Gracillariidae); Teleiodes saltuum (Zeller) (Gelechiidae), associated with Larix; T. fugacella (Zeller), from Ulmus; Commophila aeneana (Hubner) (Cochylidae). Other records of rare species include many new records for the province of Friesland and the Frisian Wadden Islands in addition to the recent review of this province by Lempke (1986a).

New and interesting Microlepidoptera from the Netherlands, mainly in 1984. The following species are recorded here for the first time from the Netherlands: Trifucula maxima Klimesch, Leucospilapteryx omissella (Stainton), Argyresthia (Blastotere) trifasciata (Staudinger) , Teleiodes wagae (Nowicki), Chionodes tragicella (Heyden), Gelechia muscosella Zeller, Epinotia thapsiana (Zeller) and Celypha rosaceana (Schläger). Monochroa niphognatha Gozmány has also been recorded for the first time, but was misidentified previously in our country as M. tetragonella Stainton. The fist authentic Dutch specimen of the latter species is recorded her now. Bucculatrix antispilella Spuler is removed from the Dutch list. The known distributions of five Tinaeidae in the Netherlands are mapped on UTM-grid maps.

Bijlage 2, bij het doctoraalverslag van E.J. van Nieukerken

New and interesting Microlepidoptera from the Netherlands, mainly in 1982 and 1983 (Lepidoptera). The following species are here recorded for the first time from the Netherlands: Stigmella magdalenae (Klimesch), Bucculatrix demaryella (Duponchel), Coleophora alnifoliae Barasch, C. zelleriella Heinemann, C. lassella Staudinger, C. tanaceti Mühlig, Gnorimoschema herbichii (Nowicki), Mompha lacteella Stephens and Crocidosema plebejana Zeller. Stigmella spinosissimae (Waters) is removed from the Dutch list. Selective collection on salt marshes produced many interesting species. Surprisingly large numbers of rare Tortricidae were collected with sex-pheromone traps, in particular Cydia and Pammene species.

Introduction In this supplement I will list all adult Lepidoptera reared from the larvae and pupae collected in 1984 in China. Since no more moths emerged the last two months, we can assume that no more emergences are to be expected and those species which failed to produce adults probably all died. In the following list I completely follow the numbering and order in our previous report (pp. 16-22). Only those species are listed from which larvae have been collected.

The two Nepticulidae, described by A. Caradja, are reexamined. The following synonymies are established: Ectoedemia (Ectoedemia) rufifrontella (Caradja, 1920) comb. nov. as senior synonym of Nepticula nigrosparsella Klimesch, 1940 (syn. nov.); Ectoedemia (Fomoria) viridissimella (Caradja, 1920) comb. nov. as senior synonym of Nepticula nowakowskii Toll, 1957 (syn. nov.). E. viridissimella is redescribed, and the genitalia are figured.

Introduction At the Department of Animal Systematics and Zoogeography of the Free University Amsterdam the object of study has been already for a number of years the systematics and phylogeny of the microlepidopteran family Nepticulidae. Particularly the species of the western palearctic region have been studied, but also studies on species from New Zealand and Japan have been undertaken. Ideas about the phylogenetic relationships between genera of Nepticulidae are developed. Until now knowledge of Nepticulidae in East Asia, apart from Japan and the Ussuryisk region in the USSR has been negligible because of the lack of material from this part of the world in museum collections. Judging from the distribution of the hostplants in E. Asia the Nepticulid fauna certainly must be very rich. This means that collecting trips to any of the East Asian countries might very well result in the discovery of many hitherto unknown species of this family of moths. The agreement between the Peoples Republic of China and our country gave our department an excellent opportunity to establish cooperation on the study of Nepticulidae with the Zoological Institute of the Academia Sinica, Beijing. The head of our department, Prof. C. Wilkinson, visited the Zoological Institute (and several others) during December 1983 and January 1984 to establish the initial contacts with our counterpart Prof. Liu Youqiao and investigate museum collections. It appeared that even in the P.R.C. very few species of Nepticulidae were present in museum collections, so it became apparent that a collecting trip would be the first step necessary in starting a cooperative study of Nepticulidae in China. This report gives the experiences and preliminary results of this first collecting trip, which lasted from September 4th till November 1st, 1984. The purpose was to collect larvae of Nepticulidae, rear them out, set up a pinned collection to enalble further study, preserve their mines and prepare a herbarium of foo

The identity of hitherto doubtful specific names in Nepticulidae has been established on the basis of type material where possible, or after a critical reexamination of the original descriptions. In addition a few previously synonymized names have been reevaluated. The identity of 17 names could be firmly established: 15 are synonymized with senior, well known names, two are senior synonyms to previously used names: Stigmella sakhalinella Puplesis (= S. discidia Schoorl & Wilkinson syn. nov.) and Trifurcula subnitidella (Duponchel) comb. nov. (= Trifurcula griseella Wolff syn. nov.). Two names are tentatively synonymized. Three names are excluded from Nepticulidae: Tinea commatella Schrank, 1802 (probably a trichopteron), Tinea minimella Costa (preoccupied) and Lyonetia concolorella Tengström, 1848 (a junior synonym of Bucculatrix cristatella Zeller). Eighteen new synonymies are established and three lectotypes are designated. A systematic index comprising these and other recently published changes is presented in the same form as the checklist of western Palaearctic Nepticulidae.

The identity of Stigmella zelleriella (Snellen, 1875) n. comb. is fixed by designation of a lectotype. Nepticula repentiella Wolff, 1955, and Nepticula lappovimella Svensson, 1976, are placed in synonomy with S. zelleriella, which is redescribed and discriminated from resembling species. It appears to have a northern distribution, occurring in sand-dunes on the Salix repens L.-complex and on moors in Scandinavia on Salix lapponum L. The related S. benanderella (Wolff, 1955), which occurs on the same foodplants, is also diagnosed.

The subgenera Zimmermannia Hering and Ectoedemia s.str., together forming the genus Ectoedemia Busck sensu Wilkinson & Newton (1981) are described and redefined, and the Western Palaearctic species are revised. In total 50 species are recognised, including the new species hispanica, monemvasiae, nuristanica in Zimmermannia and andalusiae, algeriensis, leucothorax, alnifoliae, contorta and two unnamed species in Ectoedemia s.str. Fifteen new synonymies and ten new combinations are established and 42 lectotypes are designated. Primary types have been examined in many cases. Data on larvae and biology are included and keys to all species are provided. The monophyly and the sister group relationships of both subgenera are demonstrated. The subgenus Ectoedemia can be divided into the populella group, suberis group, subbimaculella group and occultella group, being monophyletic entities, and the possibly paraphyletic angulifasciella group. Two alternative hypotheses of the phylogeny within Ectoedemia s.str. are presented. Decisions on species discrimination have in many cases been corroborated by study of allozymes.

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A hydrobiological description of eight ditches in the Dutch inland polders "Oude Land van Strijen" and "St.-Anthoniepolder" (province of South-Holland) is given. The flora and macrofauna (table 2 and 3) have been studied in July and October 1971. A few chemical data (chloride-content and conductivity) of the water are presented. In the northern part of the area the percolating water is fresh due to the influence of the "Binnenbedijkte Maas", one of the few real freshwater lakes of the Deltaic region. In the southern part it is brackish due to the influence of the „Hollands Diep". The bottomprofile of the polders shows heavy river-clay poor in chalk (upper 40-100 cm) on peat. The examined ditches are hardly polluted and the water is clear. On the bottom of the ditches there is little sapropelium present and a pioneer character is conserved by cleaning the ditches yearly in late autumn. Chemical cleaning methods by herbicids are not used in these polders. The flora and fauna of the ditches are very rich as shown in table 2 and 3.

The waters of the State Reserve "De Groote Peel", situated on the border of the provinces of North-Brabant and Limburg in the Netherlands, were investigated during Easter 1971 (8-11th of April). The reserve is a former peat-moor, where peat was cut until the first half of this century. Now vast areas of Molinia caerulea with wild shoots of Salix aurita and Betula pubescens are found. Special attention was paid to waterbugs (Heteroptera aquatica and semi-aquatica) and waterbeetles (Coleoptera aquatica). The species present indicate slightly polluted oligotrophic water. The pollution is probably caused by three factors: the inflow of eutrophic water, the breeding of Blackheaded Gulls (Larus ridibundus) and the tourists. Table 1 gives a list of the insect-species collected. One macropterous specimen of Hebrus ruficeps was found between 100 micropterous specimens. Macropterous specimens of this species were only found twice previously in the Netherlands (lit. 6 and 8). A comparison with the results of Higler (1967), who investigated the same area in autumn 1966, is given.