Sampling event

Lepidoptera collection of Hannu Saarenmaa

Latest version published by Department of Forest Sciences on 07 September 2019 Department of Forest Sciences
This collection was initiated in 1966 and contains Lepidoptera data around the world, in particular North and East Finland, Scania in Sweden, Denmark, Spain, Russia, Canada, and Brasil.
Publication date:
07 September 2019
CC-BY 4.0

Data Records

The data in this sampling event resource has been published as a Darwin Core Archive (DwC-A), which is a standardized format for sharing biodiversity data as a set of one or more data tables. The core data table contains 9,228 records.

1 extension data tables also exist. An extension record supplies extra information about a core record. The number of records in each extension data table is illustrated below.

  • Event (core)
  • Occurrence 

This IPT archives the data and thus serves as the data repository. The data and resource metadata are available for download in the downloads section. The versions table lists other versions of the resource that have been made publicly available and allows tracking changes made to the resource over time.


Download the latest version of this resource data as a Darwin Core Archive (DwC-A) or the resource metadata as EML or RTF:

Data as a DwC-A file download 9,228 records in English (6 MB) - Update frequency: as needed
Metadata as an EML file download in English (8 kB)
Metadata as an RTF file download in English (8 kB)


The table below shows only published versions of the resource that are publicly accessible.

How to cite

Researchers should cite this work as follows:

Saarenmaa H (1966-) Lepidoptera collection and observations. institutionCode DABUH collectionCode SEMF.


Researchers should respect the following rights statement:

The publisher and rights holder of this work is Department of Forest Sciences. This work is licensed under a Creative Commons Attribution (CC-BY) 4.0 License.

GBIF Registration

This resource has been registered with GBIF, and assigned the following GBIF UUID: 84ede380-f762-11e1-a439-00145eb45e9a.  Department of Forest Sciences publishes this resource, and is itself registered in GBIF as a data publisher endorsed by GBIF Finland.


Moth monitoring


Who created the resource:

Hannu Saarenmaa
University of Helsinki, Department of Forest Sciences
PO Box 27
00014 Helsinki

Who can answer questions about the resource:

Hannu Saarenmaa
University of Helsinki, Department of Forest Sciences
PO Box 27
00014 Helsinki

Who filled in the metadata:

Hannu Saarenmaa
University of Helsinki, Department of Forest Sciences
PO Box 27
00014 Helsinki

Geographic Coverage


Bounding Coordinates South West [-90, -180], North East [90, 180]

Taxonomic Coverage

No Description available

Order  Lepidoptera

Sampling Methods

Diverse methods for collecting and observing have been used. Most data, however, is from light trapping throughout season in a fixed location. All Macrolepidoptera have been identified and counted. Absence can be inferred from lack of record. Microlepidoptera have been identified where possible, but their numbers are not necessarily quantitative, and lack of record does not mean absence.

Study Extent Any

Method step description:

  1. Light traps and bait traps of various kinds have been used. They have been checked at various intervals. Specimens have been preserved from some observations, and are included as separate occurrences, and linked to the observation. MachineObservation in basisOfRecord means use of traps, although a human has identified and counted the machine-killed individuals. These are mostly light traps that operate at night from dusk to dawn using a clock switch. They are visited at variable times, often only once a week. sampleSizeValue is the number of nights or days the trap has operated. I do also give hours but they are normally not used. sampleSizeUnit says “day” while it is really “night”. It might be more meaningful to use “hour” instead, which would properly take into account the fact that here in the north we have very short nights and consequently poor catches. For instance, if the length of night is 6 hours, and it runs for a week, we have effective catching time of 42 hours. Often the lamp goes on while there still is dusk and it is not attracting until one hour later. I should really use sunset/sunup times with some margin when sun is a few degrees below the horizon (so called nautical night). But I am not aware of any standard in moth monitoring schemes for how to represent this. organismQuantity is indivudualCount divided by sampleSizeValue. In any case, individualCount is there as the raw number, so the user can compute this as they please. samplingEffort is the number of collecting devices, i.e., traps. Usually just 1, but sometimes results of several devices have been combined for the event.

Collection Data

Collection Name Lepidoptera Collection of Hannu Saarenmaa
Collection Identifier SEMF
Parent Collection Identifier DABUH
Specimen preservation methods Dried

Additional Metadata

Alternative Identifiers 84ede380-f762-11e1-a439-00145eb45e9a