OSU Extension Greene County

BYGL Weekly News for December 10, 2018

The following articles were compiled during the last 7 days by members of the Extension, Nursery, Landscape, Turf (ENLT) team to benefit those who are managing a commercial nursery, garden center, or landscape business or someone who just wants to keep their yard looking good all summer.  Access the BYGL website for additional information on other seasonal topics at: http://bygl.osu.edu

For more pictures and information, click on the article titles.  To contact the authors, click on their names.

You’re a Mean One… Mr. Recluse?

Authors Ashley Kulhanek

Published on December 4, 2018

It’s the holiday season (the holiday season…) and many are digging in attics and basements for decorations and bows, stored sweaters, coats and yes… SNOW boots.  Inevitably, Extension offices receive calls about the unfortunate spider (or stink bug) that was found, dead or alive, while sifting through packages, boxes or bags that haven’t seen the light of day for a year.  The question is, “Is it a brown recluse?”

Remember that there are many different spiders that may come to inhabit our homes at one point or another, and cooler temperatures often facilitate home invasions from multiple insects and spiders alike. This includes some recluse look-alike spiders such as wolf spiders, funnel weaver spiders, and barn spiders.  These home invaders often make their way indoors for shelter, protection from the weather, or in search of food.  They are actually beneficial, providing pest control of other insects or arthropods you would rather not have, inside or out.  So, keeping them around is usually encouraged!

Brown recluse spiders (Loxosceles reclusa) are not known to survive winter outdoors in Ohio, but they do survive well indoors and can be dispersed through movement of furniture or household goods to areas outside their generally considered “range”.  Brown recluse spiders are secretive in nature.  As with many spiders, any undisturbed dark area could be a habitable space for them to hide out.  They, as with many other spider species, could inhabit garages, attics, basements and crawl spaces, behind wall voids, and hollow spaces.  Shed skins and egg sacs may be found near joists and tight protective spaces or under clutter, insulation, stored undisturbed boxes and stored clothing.  So when we run across any spider or critter that falls out of that artificial tree we just hauled upstairs, we often assume the worst.

They are named recluse for their shy and timid behavior.  People who come into contact with the poor creatures usually do so by stepping into a shoe or tossing on a stored item of clothing that has long sat and hasn’t been washed or shook out for a long time.  In the face of the impending SQUISH, the spiders must lash out and bite as their only last defense.  And this is how many spider bites have happened, regardless of species.  Most arthropods only bite or sting in defense during accidental crushing or agitation.

The identifying character most cited for Brown Recluse is the “violin” or “fiddle” shape on its back (cephalothorax).  This description is actually a little subjective and sometime people mistake stripes or other patterns as the so-called fiddle.  A better key to identifying the brown recluse is its eyes.  Brown recluse have only 6 small eyes arranged in three pairs on the head.  With legs extended they are about the size of a quarter.  They are tan to brown in color and appear semi-hairless though they do have short sparse hairs.

Here in Medina County, we have not had any confirmed samples brought into the Extension Office this season, which his not to say they could never be found.  But, in Richard Bradley’s “In Ohio’s Backyard: Spiders” he states, “This infamous family is represented by two RARE species in Ohio.”  But that’s not always the case for some of Ohio’s more southern counties.

General precautions for any home spiders concerns:

– Reduce clutter that serves as dark hiding places in basements, garages, and homes.

– Use gloves and wear long sleeves when unpacking boxes from storage.

– Be vigilant of what you are doing and where you are stepping in unfrequented spaces.  Use a bright flashlight to inspect dark corners you may be rustling around in if concerned about the presence of spiders.

For More Information, Check Out These Resources

Bradley, R. 2004. In Ohio’s Backyard: Spiders. Ohio Biological Survey.

Jacobs, S. 2015. Brown Recluse Spiders Factsheet.  Penn State University. http://ento.psu.edu/extension/factsheets/brown-recluse-spiders

Potter, M. 2018. Brown Recluse Spider Factsheet.  University of Kentucky.  https://entomology.ca.uky.edu/files/ef631.pdf

More Information

University Of Kentucky

https://entomology.ca.uky.edu/files/ef631.pdf

Penn State University

https://ento.psu.edu/extension/factsheets/brown-recluse-spiders

2019 Commercial Applicator Recertification Conferences

Authors Jennifer Andon  Chrissy Kaminski

Published on December 3, 2018

• Five hoursof recertification credits in one day!
• Core credit available multiple times.
• Fertilizer Recertification will be offered at Dayton, Sandusky and Columbus conferences.
• All Categories will be offered.

Interstate reciprocity will be offered for the following states:  Indiana, Michigan, Kentucky, Pennsylvania, West Virginia.  Additionally, ISA and CCA credits will be offered for approved classes.

Exams will be offered at all four locations beginning at 10:30 am, for all categories.  Walk-in seats will be available. Please register for the exam by calling the Ohio Department of Agriculture at:  614-728-6978, or registering on-line at agri.ohio.gov.

2019 Commercial Recertification Conferences

For Conference Questions, please go to pested.osu.edu or call OSU Pesticide Safety Education Program at 614-292-4070.

For Registration Questions, please call Walcom Registration Services at 740-524-4123

More Information

http://pested.osu.edu/commercialrecert