Nouvelles
Last night I went for a ramble at Iona Beach in Richmond BC, looking for insects and inspiration in the sand dunes. I knew the sunset would be pretty, as there was a bit of light wispy cloud in the west, so I hurried out to the end of the beach where restoration efforts hadn’t ripped up the ground.
I found my subjects attaching themselves to twigs and vegetation, bedding down for the night.
Coelioxys spp. (Megachilidae) preparing to attach to a dead, dried flowerhead. Next time you go for a sunset beach stroll, have a look for these and other sleeping insects!
If you are a photographer, the combination of the setting sun and your flash can do wonderful things to highlight your subjects.
An Ammophila wasp (Sphecidae), shot without flash, is but a silhouette against the darkening sky.
I am not sure, but I think I may have gone overboard with this session! It seems like it could be an ad for a tropical beach vacation for insects.
This slender and elegant caterpillar hunter is fast and nervous in the day, but wonderfully calm in the evening.
As the light was failing, so were my flash batteries, but this unplanned blur of a cluster of male Colletes males is still cool!
There are so many bees on this flower that it sags to the ground!
The Colletes cluster against the darkening sky of night.
Next time you go for an evening stroll on a sandy beach, head up to the dune vegetation, and have a look for these wonderful sleeping wasps and bees!
Samantha Vibert, Gwylim Blackburn, Catherine Scott and Sam Evans in the midst of examining an unidentified jumping spider.
Yesterday, I had the pleasure of ferrying four Vancouver-area spider researchers out to Iona Beach in Richmond for a bit of a Friday-evening ramble in search of spiders. Gwylim Blackburn and Samantha Vibert are old hands at spider observations at this site, Gwilym had studied Habronattus americanus and Samantha had studied Hobo Spiders. Catherine Scott (who studies black widows) and Sam Evans (a recent recruit to Wayne Maddison’s lab) came along as well. This was a Toyota Tercel loaded down with spider talent!
Daisy did not ask for this in her old age, but performed admirably nonetheless.
We arrived shortly after 7 pm, and despite the late hour, we found a few jumping spiders, although Habronattus americanus was already in bed. I only managed to sneak in a couple photos of large Phidippus.
Sam searches among moss and Scotch Broom.
A long-jawed orbweaver male (Tetragnathidae) tucked in with a pupating beetle.
A freshly-moulted harvestperson with exuvium still attached!
A large ichneumonid among pine needles.
A 10-lined june beetle larva under a log.
A wolf spider in her burrow with a freshly-laid eggsac.
Gwylim searches the beach.
Just before the gates were due to close at the park, we spotted a couple of snails, seemingly uncaring of our log-flipping sharing a tender moment. We hope they had a fun night!
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- Sweeping vegetation for terrestrial arthropods as part of the Northern Biodiversity Program survey during 2010. The location is the Skeleton Creek Valley, located just above Lake Hazen on northern Ellesmere Island, and you can see Lake Hazen in the background. Vegetation is particularly lush in these creek valleys, especially compared to surrounding tundra. Students are (from left) Christine Roussel (UPEI), and Sarah Loboda and Meagan Blair (both from McGill). [photo by Donna Giberson]
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- Unknown dipteran parasitized by mites, taken in the Fortuna cloud forest, Panama, March 20, 2012. [photo by Bernie Roitberg]
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- This Libellula lydia (Odonata: Libellulidae) was spotted on Mont-St-Hilaire, QC, having just caught a meal. [photo by Christine Barrie]
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- Acrosternum hilare (Hemiptera: Pentatomidae) holding onto blade of grass in Stoneycroft, Ste-Anne-de-Bellevue, QC. [photo by Christine Barrie]
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- Larva of Papilio machaon dodi (Lepidoptera: Papilionidae), on Artemesia dracunculus, near Drumheller, AB. [photo by Julian Dupuis]
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- Two honey bees with full pollen baskets, standing on a pollen trap of goldenrod pollen. Pollen was collected for a honey bee nutrition and pesticide research project. At Five Islands, Nova Scotia, August 18th, 2011. [photo by Megan Colwell]
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- Leptoglossus occidentalis (the bug, Coreidae) and a male Agapostemon (the bee, Halictidae) hanging out on Aster sp. in the fall (early October) on the UBC Okanagan (Kelowna) campus. Leptoglossus feed on the seed cones of ponderosa pine and Douglas fir. [photo by Bob Lalonde]
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- A male forked fungus beetle, Bolitotherus cornutus (Tenebrionidae) displays his ornately haired horns as he lumbers over a piece of bark at Bon Echo Provincial Park, Ontario. [photo by Crystal Ernst]
The following is a guest post by Simon Fraser University student Bekka Brodie. Bekka studies blow fly ecology and blogs at www.bekkabrodie.com.
The Romanian tarantula, Lycosa singoriensis (Lexmann 1770), is actually not a tarantula at all! It’s a wolf spider! In Romania, and in most parts of Europe, the members of the family Lycosidae are commonly called tarantulas. This species is the largest spider in Romania.
For the last couple weeks my family and I have been visiting relatives in Romania. While we’ve been here, my son (Tavi) and I have made it our mission to capture the Romanian Tarantula. It all started when we were visiting the Celic-Dere Monastery (black water in Turkish) in northern Dobrogea (or Dobrudja), Romania and found numerous large holes in the ground surrounded by a « spidery » silk. The holes were about the size of a Toonie (about 1 inch in diameter) and approximately 30 cm deep (measured with a stick). So, we just had to investigate.
After talking with the locals, it was explained to us that the best way to capture one of these spiders was to « fish » for it. More specifically, we needed to use a skinny candlestick with the wax removed down to the last centimeter. (So, basically 1 cm of wax and the end of a string.) We immediately set out for our « fishing » trip…
[youtube http://www.youtube.com/watch?v=22Z5VmDh_28?rel=0&w=540&h=304]
Unfortunately, we had no success. After further questioning the local people, it was suggested we smoke it out… and still no success. (One of those « it seemed like a good idea at the time » plans.) Finally, plan C, to simply dig it out.
And… success at last!
The Romanian “tarantula » is found in central and eastern Europe. In Romania the species appear to be quite common but are classified as critically endangered in the Czech Republic and on the current IUCN Red List other parts of Europe (Frank 2000). The spider spends most of its time in the gallery it digs in the ground. The adult spiders are nocturnal and hunt mainly for insects but have been known to eat small lizards (locals, personal communication).
The species size and lifespan various according to their sex, males are smaller (approximately 19-25 mm) living one year and the females larger (approximately 25-30 mm) but live for two years (Iosob 2009). The spiders have an oval shaped cephalothorax and abdomen that are a brown and black on the dorsal side. Their ventral side is black.
In late summer and early fall males court the females by performing a nuptial dance just outside the gallery entrance. When the male approaches the female he begins to swagger, his leg hair lifts and descends alternately while vibrating (Prisecaru et al. 2010). The nuptial dance varies in time but copulation takes place for up to 1-2 hours (Prisecaru et al. 2010). Shortly after mating the male dies, leaving only juveniles and females to overwinter.
As is common in the spring, we caught an adult female with an egg sac, and as Tavi pointed out, « she is a very good Mama! » When we first dug her out of the ground she was separated from her egg sac, but when we put them together in a jar, she attached herself to them immediately. It has been reported that if the female loses her egg sac she will look for it with perseverance and even accept another spiders egg sac or a sham (Iosob 2009). Once the eggs hatch, females protect their spiderlings by carrying them on her abdomen and cephalothorax (about 4 days) until they deplete their vitelline reserves and complete their first moult (Prisecaru et al. 2010).
The name tarantula is derived from a common wolf spider (genus Lycosa) from Apulia, Italy. The folklore during the 11th century suggests that a person bit by the “tarantula” will undergo a hysterical behavior, called tarantism; that appears like violent convulsions. The only prescribed cure for tarantism was frenzied dancing; now known as the traditional Tarantella.
[youtube http://www.youtube.com/watch?v=BoWjMK93Lv8?rel=0&w=540&h=405]
Romania has without a doubt, some of the last untouched and preserved ecosystems among the European Union countries. (In fact, taxonomists can hardly keep up with identifying new species [Cogãlniceanu 2007].)While in most parts of Europe many plant and animal species are threatened or endangered, they can be found thriving in Romania (species like bears, wolves, tortoises, cormorants)… at least for now. It is crucial that we learn more about these species while they are still common (including the Romanian tarantula), and help them remain common in the face of growing threats such as economic development, overexplotation, or poaching. (You can read about current research and conservation work here and here.)
Tavi and I enjoyed exploring Romania, especially capturing and learning about the Romanian tarantula! We suggest you go and, as Tavi likes to say, “find the Mania in Romania!”
Citations:
Cogãlniceanu, D., Ruşti D., and Manoleli, D. (2007) Romanian taxonomy in crisis-present status and future development. Travaux du Muséum National d’Histoire Naturelle. L:517-526
Frank, V. (2010) Spiders (Araneae) on the red lists of European countries. EkolÓgia (Bratislava) 19: 23-28
Alin, Iosob G. Lycosa singoriensis sau Tarantula romaneasca.” Cunoaste natura si animalele din Romania!Blogspot, October 2010. Web. Accessed 01 May 2014. http://zoologysp.blogspot.ro/2009/05/lycosa-singoriensis-sau-tarantula.html
Prisecaru, M., A. Iosob, O. T. Cristea. 2010. Observations regarding the growth in captivity of the wolf-spider species Lycosa singoriensis (Laxmann, 1770). Studii şi Cercetări: Biologie, Universitatea ”Vasile Alecsandri” din Bacău, 19: 33-38.
I know this isn’t entomological in the strict sense, but isn’t it just grand when you come upon an arthropod as splendid as this freshly-moulted Phidippus johnsoni? What a beautiful spider! I found this last evening in Mt. Tolmie Park in Victoria, BC, and you can be sure where beauties like this are turning up, a plethora of insects also awaits. I can’t wait to go and explore!
Just off a main road running through a small town in Florida, a small group of enthusiastic folks, both local and foreign, sit focused. Eyes trained on minute hairs, scales, and a plethora of other physical traits, we worked diligently; all of us training to identify the 174 species of mosquitoes which call North America home. What brought us all together? The advanced mosquito identification and certification course offered by the Florida Medical Entomology Lab in Vero Beach, Florida.
Toxorhynchites, one of the « good guys ». These mosquitoes won’t bite you, and their larvae are predators on other container-inhabiting mosquito larvae. Photo by Andrew Chaulk.
First offered in 2000 as a training course for mosquito control personnel in Florida, the course has since opened its doors, inviting students from across the United States and internationally. This year’s class comprised of 21 students, four of which were Canadian (including myself, Kate Bassett – a fellow Master’s student, and our supervisor, Dr. Tom Chapman), and one student had travelled all the way from Nigeria to receive this internationally recognized accreditation. Led primarily by Dr. Roxanne Connelly, a Louisiana born entomologist who specializes in mosquito biology and mosquito borne diseases, the course is the only one of its kind and covers the principles and skills needed to identify all known mosquito species in North America north of Mexico in a fast-paced and in-depth manner. The taxonomically based course is divided into two sections, with the first week covering adult mosquito keys, and the second, taught by retired entomologist George O’Meara, covers the larval keys.
George O’ Meara leading the class. Photo by Tom Chapman.
Having come all the way from St. John’s Newfoundland, we arrived in Vero Beach to a wonderful break from our typical early spring weather. The course, which ran from March 3rd to 14th, began with some brief introductions and a tour of the FMEL property before getting down to business. Each section of the course comprised of four days of instruction and practice with the keys followed by one morning of exams – one written and practical exam per section. The in class material was often broken up by opportunities to use a wide variety of mosquito collection methods. Demonstrations were also provided concerning methods of specimen preparation and during one such demonstration I was even given the opportunity to show the class how minuten pins are used since this method is not commonly used at the FMEL. Overall, while the learning curve for the course was rather steep and the instruction fast paced, there was an interesting combination of anxiety and comfort brought about by the very friendly and supportive atmosphere which I think created an excellent learning experience.
Greg Ross demonstrates some of the trapping and surveillance equipment, including lard can traps and CDC light traps. Photo by Andrew Chaulk.
Reflecting on my experience after returning to the snowy St. John’s, one unexpected yet valuable aspect of the course I took home with me was learning about the variety of backgrounds my peers had come from and how these all culminated in our taking the course together. From graduate students to naval officers, and mosquito control employees to research and medical scientists, our class was quite an interesting mix. While the foundation for my own interest in mosquitoes stems from my work for a graduate degree in biology at Memorial University of Newfoundland, I now have a much broader perspective on the amount of effort and resources that are invested in mosquito research and control.
Students work with FMEL’s teaching collection, which is extensive. Photo by Tom Chapman.
Taking everything into account, I see this course as being one of the most valuable experiences of my graduate experience to date. Still in the first year of a Master’s degree I am working on a project centered on the mosquitoes of our province. I am concerned with questions surrounding the biodiversity of these insects in our province, their ecology and behaviour, as well as identifying possible introduction pathways of novel species. Being able to see firsthand what the results of research in this area can develop into has provided perspective for my own project and also has given me ideas of where my research can take me in the future. My expectations for this course were well exceeded and I would recommend this course to anyone who is working with these insects in any aspect.
If you would like some more information concerning course content and registration for next year’s class please visit here.
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