DSA Virtual Lecture Series starts May 14th!

Check out our first lecture by Dennis Paulson! Please register in the Buy Tickets button below the flyer.

Lecture series V2.jpg

ARGIA VOLUME 32 ISSUE 3 IS NOW AVAILABLE FOR DOWNLOAD

The latest issue of ARGIA, the DSA's quarterly news journal, is available on the DSA website. In this issue you will find several tributes and articles in memoriam of Paul-Michael Brunelle, the first article in a new ARGIA section that will be devoted to submissions from individuals who identify a member of a group which has been underrepresented within the publication, and the first article in a new ARGIA series called Nymph Cove. There are also a couple of new records, lots of nymph photography, and so much more! DSA members can log in to download the issue.

Amanda Whispell

Editor-in-chief of Argia

Argia 32(3) Cover.jpeg

Argia vol. 32 Iss. 2 is now available for download

The latest issue of Argia, the DSA's quarterly news journal, is available today on the DSA website. In this issue you will find some beautiful dragonfly drawings submitted by the children of our readers and followers across the Americas as an expression of their gratitude for our essential workers during the current COVID-19 pandemic. There is an excerpt from Cindy Crosby’s new book, Chasing Dragonflies: A Natural, Cultural, and Personal History, along with accompanying artwork created by artist Peggy Macnamara. There are also some great research articles, several new records, lots of photography, and so much more! DSA members can log in to download the issue.

Amanda Whispell

Editor-in-chief of Argia

Argia 32(2) Coverjpg.jpg

Guest post from Mike Hannisian about Odonate Flight Data

American Rubyspot (Hetaerina americana)

American Rubyspot (Hetaerina americana)

Below is a post by Mike Hannisian where he has compiled data from several sites so that anyone can use easily use them. There are several links to excel spreadsheets so you can utilize his data. Please give him credit if you do utilize the data. Hope you enjoy!

Kendra Abbott
DSA Webmaster

As many OdonataCentral (OC) users know, various people post Ode records on OC, others post them on iNaturalist (iNat), and some post them on both. As a result, I have compiled a series of two sets of spreadsheets showing the early and late county and state flight dates based on OC, iNat, and the combination of OC and iNat data. One set shows the flight dates from OC, iNat and their combination using color codes to identify the new (i.e.: 2019) early and late dates. The second set shows the early and late flight dates through 2019 without noting which were new in 2019. It is my intent to update these annually.

More specifically, the first spreadsheet, (click here to access) entitled "1 NJ Odes OC 2018-2019b", shows the county flight dates through 2018 for each species in black based upon the data in (OC). To these I add new 2019 early and late county dates in red to the outside of the prior dates. This allows the reader to see the change in early and late flight dates per species per county for 2019. When an early or late date is tied, I list the date in blue. New to OC this year is the option to enter undocumented sightings. When such records provide new early or late dates I list them in green. At the bottom of each column I list the early and late county dates highlighted in orange. I also highlight the early and late county dates in green and blue respectively. When county early and late dates are for the same species, I highlight them in orange. Finally, for those county entries for which the are only Blue Dot entries, I enter BD. To the right of these columns are three more showing the early and late state wide dates, the number of counties in which each species occurs (not including Blue Date entries), and the number of counties for which there are only Blue Dot entries. Below the first of these columns is the state cumulative early and late dates highlighted in yellow.

I used the above entry criteria for each of the Southern, Central, and Northern group of counties with the exception of highlighting in yellow the regional early and late dates.

The second spreadsheet, entitled "2 NJ Odes OC 2019b", (click here to access) combines these OC data. As such, there are no red or blue entries. However, I have kept the green ones so that undocumented entries are apparent.

The third, "3 NJ Odes iNat 2018-2019b", (click here to access) and fourth, "4 NJ Odes iNat 2019b", (click here to access) spreadsheets use the same criteria as above but are based on iNaturalist (iNat) data. However, iNat has many entries that are not verified. When these would provide new or late dates they are noted as (+#) with those dates listed in lieu of a BD numbers per county column.

The fifth, "5 NJ Odes iNat and OC 2018-2019b", (click here to access) and sixth, "6 NJ Odes iNat and OC 2019b", (click here to access) spreadsheets use the same criteria for the combined OC and iNat data. However, in the fifth spreadsheet, the early and late dates derived from iNat appear in brown.

Finally, I have used the data as presented in both OC and iNat with one exception. There is an iNat Gloucester County record for American Rubyspot (Hetaerina americana) for 10 December 2019 at 6:52 p.m. The coordinates are for a building on the campus of Rowan University. I have repeatedly messaged the person who made this entry, but have not heard back. The best I can make of it is that it is an entry based upon a preserved specimen and that the date is not a flight date. Hence, I did not include this record.

Best of wishes,
Mike Hannisian

 

DSA News Alert — April 9, 2020

2020 DSA Annual and Southeast Gatherings Postponed


As you might have expected, owing to the COVID-19 pandemic, the DSA has postponed its annual gathering in Oklahoma until next year. Our intent is to reschedule for late June of 2021 in Oklahoma. Similarly, the Southeast Regional meeting has been moved to April of 2021 in Tallahassee, Florida.

The DSA regional meeting and workshop in Colombia, from 29 June to 3 July, is still scheduled to happen, although we will evaluate conditions on the ground and update participants on the meeting's status.

We hope our members and other supporters safely get outside with Odonata this season. Watch our website for news and updates.

Swamp Spreadwing (Lestes vigilax)

Swamp Spreadwing (Lestes vigilax)

Cart (0)