Wednesday, April 22, 2015

3-Jul-2011 Bumping Lake, Washington

Site locations (click to enlarge)
Rod getting his bearings
About 15 miles due east of Mt. Rainier lies Bumping Lake, the focal point of the watershed that Rod Crawford and I sampled in this day.  Our first of two sampling sites was located near an unnamed meadow on an unnamed creek feeding the south shore of the lake, which we bushwhacked to with the aid of Rod's dead reckoning skills.

The P. monticola cones were big!
P. monticola in mixed forest
near Bumping Lake
While Rod focused his efforts on the streamside meadow, I tapped western white pine (Pinus monticola) cones in the mixed-conifer forest on slightly higher terrain.  These were some impressively large cones - easily twice the size of other P. monticola cones that I've sampled.  I tapped 16 spiders from 103 cones.

Novalena web & spider in
P. monticola cone
The only identifiable species I collected was Euryopis formosa (Theridiidae), but a juvenile Novalena sp. (Agelenidae) and its cone-encompassing funnel web provided a great photo op.

Massive ponderosa pines at
Cougar Flat Campground
Picnic table smashed by
storm-tossed tree
Our second sampling site was located upstream along Bumping River at Cougar Flat Campground.  What a treat to be sampling among such massive ponderosa (P. ponderosa) pines!  And we had the place all to ourselves because the campground was officially closed; a storm and flood had destroyed some of the lower-lying sections.

Female Philodromus rufus, with prey
Juvenile Novalena intermedia in web
I tapped 240 (!) fallen ponderosa cones and collected 23 spiders from 7 species.  Novalena intermedia (Agelenidae) was the most common identifiable species present, while a female Philodromus rufus (Philodromidae) who managed to hold onto her prey during the cone tapping process was perhaps the most impressive.

Be sure to read Rod's take on the day here!

Bear scat

21/22-Jun-2011 Okanogan Highlands, Washington

Site locations (click to enlarge)
Road trip!  With my move to Massachusetts quickly drawing near, Rod Crawford and I decided to make a whirlwind collecting trip to the Okanogan Highlands, a relatively under-sampled section of Washington state.  (View Rod's map of WA spider collection coverage at the bottom of this page.)  Friend and longtime field collector Jerry Austin joined us for the fun.

Site 1. North Cascades Basecamp
Site 1. Callilepis pluto in refugium
Our first site was North Cascades Basecamp, located in beautiful Mazama.  I had done a bit of cone tapping there in July 2010 while on a family vacation and found Euryopis formosa (Theridiidae) present in fallen ponderosa pine (Pinus ponderosa) cones, but unfortunately the cone count data didn't get recorded.  Now was my chance to take a solid, well-documented sample.  And solid it was - I tapped 173 ponderosa cones and got 24 spiders from 5 species.  Most numerous were juvenile Gnaphosa sp. (Gnaphosidae), but also present were the reliable "pine cone spiders" species E. formosa and Pholcophora americana (Pholcidae).

Site 2. Jack Creek
Site 2. Fallen cones and
flowering lupine
Site 2 was Jack Creek, a narrow, steep-sided valley dominated by fire-scarred ponderosas.  The terrain was steep enough that cones frequently rolled downhill and accumulated in depressions, a phenomenon I've observed frequently in hilly terrain.  The 106 cones I tapped yielded 11 spiders and 4 species.  Finding 5 E. formosa juveniles in the sample was not a surprise, but finding a Cyclosa conica sure was, given that this common orbweaver (Araneidae) makes aerial webs.

After dropping Rod and Jerry off at the Thirteenmile Creek trailhead, where they were camping for the night, I headed north to Republic and a hotel bed.  After a long day of driving and spider collecting, I could see that the twisty, twilit back roads leading to town held a certain romantic beauty, but I was too tired to really enjoy it.  But a good night's sleep had recharged my batteries, and I eagerly set out early the next morning to collect a cone sample in Republic before returning to Thirteenmile Creek.

Site 3. Near Ferry Co. Hospital
Site 3. Cones sampled from the
hillside as well as from the roadside
As is typical in urban settings, there were plenty of ponderosa trees around Republic, but it took some searching to find any that had dropped cones in an accessible spot.  I eventually spotted a nice ponderosa grove on a hill across the street from Ferry County Hospital and tapped 12 spiders and 4 species from 100 fallen cones.  The most interesting specimen was the first male collected of the same undescribed species of Neon (Salticidae) that I had tapped from a cone earlier in the month near Teanaway Campground.

Site 4. A perilously steep patch of
ponderosas on Thirteenmile Creek trail
Site 4. fallen cone microhabitat
By the time I returned to Thirteenmile Creek Trailhead, Rod and Jerry were up and about but impatient for the dew to dry from their tents as well as the vegetation.  While they sampled non-cone habitats, I hiked up the trail to the nearest ponderosa grove and tapped 100 cones for 13 spiders and 2 species, E. formosa and Phrurotimpus borealis (Phrurotimpidae).  The Pacific ninebark (Physocarpus capitatus) growing alongside the trail was in full bloom, a lovely sight.

Site 5. Aeneas Valley. Grassy cone-
strewn lane between marsh & hill
Site 5. Flower bedecked cone
Onward to Aeneas Valley, where Rod had managed to find a dot of public land that included a ponderosa-decked hill with its toes in a marsh.  I don't often have the opportunity to tap ponderosa cones associated with water.  Tapping a total of 150 cones from the foot of the hill as well as the hillside, I collected 19 spiders and 4 species.  Phrurotimpus borealis was the most numerous, but lycosid juveniles came in a close second.  Meioneta fratrella (Linyphiidae) was perhaps the most interesting catch.  But there were no E. formosa!  Well, that happens about 50% of the time in eastern Washington cone samples.  There were also several agelenid webs covering the hillside cones, but no agelenids turned up in my tap sample.

Site 6. Near Crumbacker Lake
Site 6. cones in grass and chapparal
On the way to our final collecting site we made a brief stop near Crumbacker Lake so that I could get one more sample from ponderosa cones that had fallen in a chaparral understory.  100 tapped cones produced only 8 spiders, mostly E. formosa and juvenile gnaphosids.

Our 7th and final collecting site was in the evocatively-named Hornet Draw, where Douglas-fir (Pseudotsuga menziesii) trees dominated and ponderosa cones (but not mosquitoes!) were hard to come by.  Still, I managed to scare up and tap 50 ponderosa cones and collected 6 spiders from 4 species.  Only later, after several more years of cone tapping, would we realize that 3 of those species were the three species most commonly found in pine cones in eastern Washington: E. formosa, P. americana and Meioneta fillmorana (Linyphiidae).

Be sure to click over to Rod's website for his take on the trip (and photos of Hornet Draw, which I forgot to take!).

Pacific ninebark (Physocarpus capitatus) growing along Thirteenmile Creek trail.

Monday, April 20, 2015

4-Jun-2011 Table Mountain and Teanaway Campground, Washington

Site locations (click to enlarge)
Back on the beat with Rod Crawford, I had a very busy day tapping fallen pine cones at three elevations on Table Mountain, which is located north of Ellensburg, and in the Teanaway forest, located north of Cle Elum.

Reecer Canyon site (3600')
Reecer Canyon was my first site of the day and the lowest elevation (3600') site I sampled on Table Mtn.  Tapping 50 ponderosa pine (Pinus ponderosa) cones in this mixed Pseudotsuga menziesii-P. ponderosa forest got me 7 juvenile spiders, mostly lycosids and the "pine cone spider" Euryopis formosa (Theridiidae).

Table Mtn site (5400')
P. ponderosa cones in Reecer Canyon
Rod was eager to get to a higher elevation site to augment a previous sample he'd taken there, so we leapfrogged what would later be my mid-elevation site and drove as far up Table Mountain as the snow pack would allow, 5400'.  Although this put me above my coveted P. ponderosa zone, the subalpine parkland supported scattered lodgepole pine (Pinus contorta) trees, a species whose cones I hadn't yet tapped.

Fallen P. contorta cones on Table Mtn
with spring-beauty (Claytonia sp.)
Downed P. contorta branch on Table
Mtn with attached cones
Pinus contorta cones are "persistent", meaning they aren't shed annually as are P. ponderosa cones, but may remain attached to the tree for years.  Nevertheless, with some hunting I was able to find 30 cones to tap.  Some I found on the ground, while others were still attached to fallen branches and so weren't in direct contact with litter or the ground.  Those 30 cones were small and often only partially open, but they produced 9 spiders and 3 species, and provided the first record of the presence of spiders in fallen P. contorta cones.

Reecer Creek Road site (4800')
P. ponderosa cone at Reecer Creek Rd
Retracing our steps, we dropped back down into the P. ponderosa zone and stopped along Reecer Creek Road to take a mid-elevation sample (4800').  Tapping 51 cones I collected 5 spiders and 3 species including a rare dictynid collected in Washington only twice previously.
P. ponderosa cones near
Teanaway Campground

Site near Teanaway Campground
With too much delicious daylight left to head home, we made one more stop, near Teanaway Campground.  The 103 P. ponderosa cones I tapped weren't terribly productive, producing only 10 spiders from 2 species.  But one was a rare, undescribed Neon sp. jumping spider (Salticidae), and seven were photogenic E. formosa juveniles, so I was a happy camper.

Late afternoon sun brings out the
chestnut highlights in this E. formosa
View of an E. formosa's
silver-lined "heart" markings

Be sure to check out Rod's take on the day!

26-May-2011 Green Lake Park, Seattle, Washington

Bad site: Cone microhabitat buried
under wood chips
Good site: Cone microhabitat
unadulterated
Unable to coordinate with Rod Crawford for another joint collecting trip this month, I settled for a return to Seattle's Green Lake Park to tap cones under a different stand of trees than previously.  Since I'd taken my first sample there back in March, groundskeepers had ruined the fallen cone microhabitat under most tree stands by blanketing the ground with wood chips.  Luckily I found one mixed conifer stand growing next to busy Aurora Ave. that contained white pines (Pinus strobus or P. monticola) and also had been spared the wood chip treatment.

Fallen cones aplenty
Juvenile Enoplognatha sp. in prey
capture web between cone scales
Fallen cones were plentiful, as were arachnids within them.  Tapping 52 cones I collected 27 spiders (wow!), 13 of them the introduced invasive from Europe, Lepthyphantes tenuis (Linyphiidae).  According* to Rod, this species was introduced into Seattle in 1950 but "balloons massively" and so "is now found throughout the Pacific Northwest".  The species does seem to have settled nicely into the city.  An additional 7 spiders were juvenile Enoplognatha sp. (Theridiidae), probably ovata, also introduced from Europe.

Just a few of the many, many juvenile
Paroligolophus sp. harvestmen present
Besides spiders, the cones were also loaded with juvenile harvestmen.  So many, in fact, that I eventually stopped counting, but I estimated about 100 individuals.  Rod identified them as Paroligolophus sp. (Phalangiidae), probably agrestis.  Paroligolophus sp. is a genus native to Europe.

Although the species composition was different this day than in my 25 March 2011 sample, both fallen cones samples contained mainly introduced species.

*Crawford, Rod. 2006. Terrestrial invertebrates: spiders. In: Boersma, P.D., Reichard, S & A.N. Van Buren (eds.) Invasive species in the Pacific Northwest, University of Washington Press, Seattle, 285 pp.

An inquisitive female mallard (Anas platyrhynchos)

Saturday, April 18, 2015

18-May-2011 Wenas Valley, Washington

Site location
Rod Crawford and I were finally able to join forces again, and also had the pleasure of Jerry Austin's company on this trip.  After a productive first stop at Lady Bug Canyon to help Rod round out a partial sample taken there decades earlier, we proceeded into the higher elevations of Wenas Valley until we found some accessible ponderosa pines (Pinus ponderosa).

Sample site
Fallen cone microhabitat
The roadside pines here had dropped so many cones that before I knew it I'd tapped 111 of them.  I collected 28 spiders and 5 species. Among them was a male specimen of a very rare, undescribed jumping spider from the genus Habronattus (Salticidae), found only once previously in Washington.  Present also was another state rarity, Meioneta cf. delphina (Linyphiidae).  In contrast to these rarities, the "pine cone spider" Euryopis formosa (Theridiidae) made up a full half of the sample. 

The beautiful (and prickly) ponderosa pine cone

9-May-2011 Wachusett Reservoir, Thomas Basin, Massachusetts

Site location
During a quick business trip to Worcester, Massachusetts I took the opportunity to tap some fallen eastern white pine (Pinus strobus) cones in their native range.  Readers will recall that just one month prior, I had tapped the fallen cones of P. strobus in Green Lake Park in Seattle, Washington, where it is an introduced species.  Little did I know on this day that I would be returning to Wachusett Reservoir one year later to conduct a 6-month survey of cone spiders there!

Sample site
Understory thick with maple saplings
My sample site was located at the edge of the pine-maple forest across the street from West Boylston's Old Stone Church on Route 140 and the reservoir's Thomas Basin.  The understory was so thick with maple saplings that I frequently got entangled in them.  Only belatedly did I realized that poison ivy (Toxicodendron radicans) was a major component of the groundcover.  Lucky for me, it hadn't yet leafed out and I apparently didn't bruise any buds or woody stems, because I escaped without a rash.

The fallen cone microhabitat
Since I had no net or pillow case with me, I improvised by tapping each cone with a stick over a white groundcloth.  Tapping 65 cones, I collected 6 juvenile harvestmen and 5 juvenile spiders.  One of the spiders was a Phrurotimpus sp. (Phrurolithidae), a genus I'd later find during my 2012 survey to be one of the most common in Wachusett Reservoir cones.

Five juvenile spiders from 65 cones was not exactly an earth-shattering finding, but it was enough to put Massachusetts on the World Map Of Pine Cone Spiders.