09 April 2016

Latest Paper on Great Spreadwing in Michigan

The latest issue (Vol 28, Issue 1) of Argia includes our paper on the Great Spreadwing in Michigan.  Click here for a link to the paper. 

male A. grandis

Mark O'Brien along County Farm Drain

24 January 2016

New Macromia Species for Michigan

The latest edition of the Great Lake Entomologist includes a note of a new species for Michigan. Allegheny River Cruiser (Macromia alleghaniensis) was found at the Three Rivers SGA

male Allegheny River Cruiser at Wood Creek, Three Rivers SGA, Cass County, MI



12 July 2015

Sharonville SGA in early June

During the first week of June (3 and 6)  I checked a few locations of Sharonville SGA for new county records in Jackson County or additional ranges for species in Washtenaw County.

The hills and fields east of Prospect Hill Road and north of Sharon Valley Road in Washtenaw County provide many great upland areas to search for odes.

There were many female Spatterdock Darners (R. mutata) working the area and roadway, which is the county line.

face of a Spatterdock Darner (R. mutata)

female Spatterdock Darner (R. mutata)


Another open space area in Jackson County is located south of Fishville Road near where it turns north.  There are woodland edges, open fields, and nearby lakes.

Chalk-fronted Corporals (L. julia) were numerous and a few Frosted Whitefaces (L. frigida) were amongst the crowd.

Chalk-fronted Corporal (L. julia)

male Frosted Whiteface (L. frigida)


female abdomen of Frosted Whiteface (L. frigida)

Surprisingly, only one Four-spotted Skimmer (L. quadrimaculata) was found.

female Four-spotted Skimmer (L. quadrimaculata)

While searching through the shrubbery, I flushed a Lilypad Clubtail (A. furcifer) and hoped it wasn't the only individual in the area.  A bit searching turned up an additional male and female.


male Lilypad Clubtail (A. furcifer)
lateral view of claspers - male Lilypad Clubtail (A. furcifer)

dorsal view of cerci - male Lilypad Clubtail (A. furcifer)
female Lilypad Clubtail (A. furcifer)

dorsal view of abdomen - female Lilypad Clubtail (A. furcifer)

Another easily accessible area is north of Fishville Road and SW of Tamarack Lake.  There are clearings in the forest and adjacent to bog/wetlands which provide great perching and hunting areas for dragonflies.


A nice find was this Dusky Clubtail (G. spicatus):

male Dusky Clubtail (G. spicatus)

cerci of male Dusky Clubtail (G. spicatus)

Then a Swamp Darner flew by while working the edges of the woods and perched within net reach on a tree.  These are big darners and fairly easy to identify on the wing (even at a distance).

male Swamp Darner (E. heros)

Before departing I decided to check out the short dock at Tamarack Lake.  Soon after arriving a Cyrano Darner (N. pentacantha) flew by while working the edge of the lake.  2015 seems to be a good year for this species since I've found them at a few locations.  More individuals than I had seen in the the previous several years combined.

male Cyrano Darner (N. pentacantha)

I'll have to check these upland areas throughout the flight season.  The variety of habitats are sure to host many other species.


02 July 2015

June is Gomphid Time

This year I wanted to confirm flying adults of a couple species of clubtails for Washtenaw County.  Cobra Clubtail (Gomphus vastus) and Riverine Clubtail (Stylurus amnicola) adults had been photographed by others in past years.

I started searching May 23rd at Hudson Mills Metropark along the Huron River.  Several exuviae and one emerging Rusty Snaketail (Ophiogomphus rupinsulensis) were found.

emerging Rusty Snaketail (O. rupinsulensis)

One of the collected exuviae appears to be Cobra Clubtail (G. vastus) and will be checked by another person or two.

Here is a closeup of the exuvia of the emerging snaketail.

Rusty Snaketail (O. rupinsulensis) exuvia
On May 28th I checked Delhi Metropark and found more exuviae.  Again, Rusty Snaketails and an apparent Cobra Clubtail (which needs confirmation) were collected.  Teneral adults were observed flying up to the trees along the Huron River.  The days and nights following this visit were quite cool/cold and I wonder if the teneral individuals survived since I didn't find good numbers of clubtails in the following week.

Also present were a few Rapids Clubtails (G. quadricolor) and a couple Cyrano Darners (Nasiaeschna pentacantha). 

male Rapids Clubtail (G. quadricolor)
male Cyrano Darner (N. pentacantha)

On June 3rd Sharon Mills County Park had a few species including Unicorn Clubtail (Arigomphus villosipes).

female Unicorn Clubtail (A. villosipes)
On June 11th, I visited Sharon Mills and only found Unicorn Clubtails once again.  I headed downstream to the Raisin River crossing at Sharon Valley Road.  There were Rusty Snaketails (Ophiogomphus rupinsulensis), Swift River Cruisers (Macromia illinoiensis), and a few male Green-faced Clubtails (Gomphus viridifrons).


male Green-faced Clubtail (G. viridifrons)
dorsal view of a male Green-faced Clubtail's abdomen

On June 13th, I returned to Delhi Metropark and finally had success with one of my targets.  Flying adult Riverine Clubtails (S. amnicola) were out and I saw at least two males.


male Riverine Clubtail (S. amnicola)






I may have glimpsed a Cobra Clubtail (G. vastus) up in the trees, but it didn't allow a proper view for identification.  Also present were approximately ten female Rusty Snaketails (O. rupinsulensis) perching in the vegetation away from the Huron River. 

female Rusty Snaketail (O. rupinsulensis)

I returned to Delhi Metropark on June 18th and saw one Cobra Clubtail (G. vastus) but it was skittish and too far away to be photographed.  There were also a couple young female Riverine Clubtails (S. amnicola).

female Riverine Clubtail (S. amnicola)

The Cobra Clubtail (G. vastus) eluded me throughout June, but I still have some time in July, or there's always next year.




28 June 2015

SW Wayne County Corporal Check

Given the number of Chalk-fronted Corporals (Ladona julia) I had been observing in Washtenaw and Jackson Counties in early June, I thought I should check a couple locations in southwest Wayne County on June 7th before afternoon storms arrived.

Crosswinds Marsh was my first stop.  The northwestern portion of phase I has good habitat for a variety of odes.  Immediately present was a Painted Skimmer (Libellula semifasciata) and dozens were observed during the 3-mile hike.

female Painted Skimmer (L. semifasciata)

Approaching a creek crossing, I saw a darner flying towards the large culvert.  As it made a pass, a large "nose" and a tapered end to the abdomen were evident: Cyrano Darner (Nasiaeschna pentacantha).

Following the creek upstream from the Arkona Road area, there is a boardwalk along a ponded area created by beavers.  At this location two male Cyrano Darners were battling.

male Cyrano Darner (N. pentacantha)
 Unfortunately, no corporals were found.

Next stop was Sherwood Park, aka Banotai Park, in Sumpter Township.  Over 2 miles of walking and I didn't find my target species.  There were a couple Painted Skimmers.

male Painted Skimmer

 Also, I did find two other species that are rare in Wayne County: Banded Pennant (Celithemis fasciata) and Lancet Clubtail (Gomphus exilis).


teneral female Banded Pennant (C. fasciata)
Lancet Clubtail (G. exilis)