Announcing MDLepsOdes, a new Google list for sightings and discussion of the field biology of butterflies and odonates.

Over the years, the butterfly and ode communities have grown closer in our joint interest in and mutual commitment to field and ecology work.  A great example is the very useful and active sister list to the north, PALepsOdes, after which MDLepsOdes is modeled.  What we find so useful about PALepsOdes is that it reaches both communities, butterfliers and ode specialists, for whom there is an increasing overlap of interest and field activity and whose field observations enrich our knowledge of both orders of insects.  The collegial and respectful discussions that inform PALepsOdes will be what we strive for here.

There are plenty of resources for butterfly gardening, rearing leps, and general educational information about insects, but this list is created especially for those of us who are interested in field work. We welcome pictures, but this isn’t primarily a site for sharing good photography unless it is part of a field work or sightings discussion.  We won’t be too picky about geographic limits of MDLepsOdes as long as the location is within a day trip’s distance for most Marylanders.

Most importantly, this isn’t a list to debate the politics of GMOs or restoration schemes or to entertain the flame wars that erupt from time to time on some of our other local lists.  Issues that touch on butterfly field research or observation — such as collecting and permit rules, access to study sites, etc. — will be welcome within reason.  As moderator, I won’t hesitate to pull the plug on posts or posters that wander repeatedly off topic or descend into the uncivil.

MDLepsOdes seeks to complement, not replace, the discussions at washbutterflies, VA-MD-DE-Bugs, and VaLeps.  Each of these lists has its focus, just as MDLepsOdes will.  If you want to follow sightings and field activities with a minimum of other distractions, this is the place the find them.

Other than that, MDLepsOdes works like all the other listservs at Google Groups:  You subscribe yourself, and if the time comes that you want to leave the list, you unsubscribe yourself.  There are also digest modes and vacation stops and other bells and whistles that are explained at the Google Groups site. To keep from being spammed, I will be approving all requests to join the list, so give me a day or so to do that.  If you have any problems, just drop me a note.

I want to drop a special invitation to the Maryland ode community — I for one would really like to see/hear about what’s being seen where.  And to those of you lep people who’ve dropped out of the other discussions, welcome back!

Special thanks to Tom Stock and Beth Johnson, who’ve provided encouragement and beta testing for the listserv to make signing up as easy as possible.  I’ll continue to rely on them to provide counsel as issues in list management come up.

We look forward to seeing you at MDLepsOdes, and please share this information freely!

To sign up, go to https://groups.google.com/forum/?fromgroups#!forum/mdlepsodes

Jeffrey Caldwell recently posted two interesting papers about clues that nectar plants provide to pollinators (in this case, moths) that indicate presence of nectar:  carbon dioxide and humidity.  No reason why these should not obtain for day-flying leps as well.

Caldwell writes on DesertLeps:

>>It is quite costly in terms of energy expenditure for moths to hover, and this research indicates that humidity emanating from the nectar supply of a flower is one of the cues that hawkmoths are able to detect and key in on, helping them search for food more efficiently:

http://www.futurity.org/science-technology/moths-sense-humidity-to-hunt-down-nectar/

The discovery is touted as that of “a previously unknown sensory channel that is used in plant-animal interactions”. The white-lined sphinx (Hyles lineata, Sphingidae) apparently can detect miniscule differences in relative humidity, namely such as the invisible plume of humidity emanating from a flower offering nectar.

The abstract — “Floral humidity as a reliable sensory cue for profitability assessment by nectar-foraging hawkmoths”– by Martin von Arx, Joaquin Goyret, Goggy Davidowitz, and Robert A. Raguso, an article of the Proceedings of the National Academy of Sciences of the United States of America, is here:

http://www.pnas.org/content/early/2012/05/25/1121624109.abstract?sid=b54c10ae-ecbe-44f8-b870-b8dbc12d91d6

Full text of the article here:

http://www.pnas.org/content/early/2012/05/25/1121624109.full.pdf+html

and again about CO2 levels:

This paper says “adult herbivorous Lepidoptera have especially well-developed CO2 organs” — the Carolina sphinx (Manduca sexta, Sphingidae) and other adult-feeding moths have “large labial-palp pit organs that sensitively detect” carbon dioxide.

Datura wrightii, a favorite nectar source, emits a big whiff of carbon dioxide when it first opens and is full of nectar, possibly sort of a silent dinner bell for the moths.

2013 brown elfin Frederick BAJTom Stock, Beth Johnson and I returned to one of the powerlines along Gambrill Park Road in the Frederick Municipal Watershed Forest on Saturday, hoping to do better than I had done last week in the short period before Sunday’s showers rolled in.  We did not expect, however, to find Brown Elfins in the kind of abundance we did — while each of us had slightly different numbers, we each had 25 or more, a personal high count for this species at any one location for me.  They are clearly ovipositing on the abundant blueberry along the powerline trail, and are most often seen basking on the broad, dark green leaves of mountain laurel, from which the males dart out to harass passing females or male interlopers.

In addition to the Brown Elfins, Tom’s eagle eye spotted a Pine Elfin in the same location, nectaring on the same blueberry bushes.

Aside from elfins, we saw:

Eastern Tiger Swallowtail (11, all yellow form)

Cabbage White (1)

Orange Sulphur (1)

Spring Azure (2)

Eastern Tailed-blue (1)

White-M Hairstreak (6)

Juvenal’s Duskywing (14)

Horace’s Duskywing (1)

Dreamy Duskywing (6)

I took off for the Eastern Shore yesterday, hoping to pick up Frosted Elfin on the colonies of lupine in The Nature Conservancy’s Nassawango Creek Preserve and environs.  I’d been there two weeks ago — the same time we had them last year in this location — and the buds were beginning to shoot up.  Given that lupine-feeding Frosted Elfins (there is an ecotype that feeds on wild indigo) feed on flower buds and developing seed capsules, I figured they would be in flight by now.  No such luck — it’s been very cool and windy on the Eastern Shore owing to the Atlantic high pressure system that’s been in place for what seems like weeks.

Even though the weather yesterday along the Nassawango was pretty much perfect for elfin watching, they appear not to have emerged yet.  The flower racemes were just beginning to flower — two or three open flowers at most on the most advanced stalks.  And no elfins.

Best sighting of the day was of Denise Gibbs, who also showed up to check out the same lupines, and sent me on a welcome but ultimately unsuccessful chase for a mystery snake along the Paul Leifer Trail.

2013 Olympia Marble Allegany CoTom Stock and I headed out to Allegany County today to visit a few sites for “must-have” early spring fliers for the MD100 project.  It was a superb day to be butterflying, and both of us boosted our annual total significantly!

A number of small whites are flying in Allegany at this season, most of which are the quite diminutive first spring brood of Cabbage White.  The challenge is differentiating these in flight from the past-peak flight of Falcate Orangetips and the always-hoped-for Olympia Marble.  We were delighted to see small but stable numbers of Olympia Marbles flying among the other two, but except for the one we photographed the other determinations were made almost all the time in the hand (or in the net, as it were).

Silvery Blue is flying now wherever there are substantial amounts of vetch in bloom, and that includes roadsides of Oldtown-Orleans Road and Piclic Road in Green Ridge State Forest.  The azure flight is about over:  We had two only Summer Azures during our field work today.

All the expected duskywings are flying, including super-abundant numbers of Juvenal’s Duskywing and smaller numbers of both Dreamy and Sleepy Duskywings.  Other skippers that surprised us today were Common Roadside Skipper (always a good find) and Northern Cloudywing (early for this species).  We dipped officially on one of the Green Ridge specialties, Cobweb Skipper, despite the fact that other folks had it in abundance were we were just last week.

Most expected swallowtails are out:  Eastern Tiger, Spicebush, Pipevine, Zebra, Black.  We did not not see Appalachian Tiger but expect it will emerge within the next week or two in Allegany.

Other notable butterflies to round out our 28-species day included Meadow Fritillary, Clouded Sulphur, Sleepy Orange, Henry’s Elfin, and American Copper.

2013-05-02 Copperhead 1 GRSFAnd speaking of copper:  At one point scrambling up a shale scree back to the car I was about to grab a root to give me a boost up.  Good thing I took a closer look:  Not a root but a Copperhead.  Handsome snake, but clearly not enjoying my company.

Today added 7 new species to my MD100 count, bringing my total to 36 for the season.  Need to clean up all the other early single-brooded species, so the next couple of nice days will see me out trying to secure Frosted Elfin and West Virginia White, among others.

Dick Smith will present a short slide show on barrens butterflies and then lead the group for about 2 miles through the globally rare serpentine barrens ecosystem at Soldiers Delight 1 pm — 4 pm. We will search for locally-occurring and serpentine endemic mid-spring butterflies such as the fragile Falcate Orangetip, the small and attractively bark-scalloped Eastern Pine Elfin, and the bluestem grass dependent Cobweb and Dusted Skippers. Additionally, we will examine and identify several of the native grasses and wildflowers seldomly seen in abundance elsewhere around Maryland.

Close-focus binoculars are recommended, but butterfly net-and-release (with in-jar identification) will be conducted by the leader. Educational and fun for kids and adults! Hike will be cancelled if raining or overcast, but slideshow will be presented regardless of weather status.Children under 12 should be accompanied by an adult.

Meet at the Visitor Center. For more information, call (443) 778-4973 (office – weekdays, 9:00 a.m. to 6:00 p.m.) or (410) 997-7439 (home) (please call after 7:30 p.m.). Cost: Free! Donations welcome.

More information on the Soldiers Delight serpentine barrens (including map and driving directions), its butterflies and other wildlife, and nature activities scheduled there is available at the following websites:

 

http://www.dnr.state.md.us/publiclands/central/soldiersdelight.asp

http://home.comcast.net/~soldiersdelight/

http://www.dnr.state.md.us/publiclands/pdfs/PVSP_SD_aprmay2013.pdf

http://home.comcast.net/~soldiersdelight/sdci_heritage.html

WABC EVENT – MEMBER MEETING AND PUBLIC PRESENTATION

Please join the Washington Area Butterfly Club on Saturday, May 11 for an informative talk on Butterfly Gardening, “Intro to Butterfly Gardening.”

Presenters Frank Boyle and Kathleen Lathrop,will share their trials and tribulations, plus tips and resources from over 20 years of Butterfly Gardening in both urban and rural settings.

WHO:    Washington Area Butterfly Club Members and open to the public

WHERE: Long Branch Nature Center

625 S. Carlin Springs Road

Arlington, VA 22204

WHEN: 11:30 AM to 1:30 PM
Directions – click here:   map

Please do not call the Nature Center.  For inquiries please respond to Frank Boyle at ravenfrank@earthlink.net

 

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