I have several entries to post, but I'll start with some big news from Steve Beaty. The Isoperla stonefly nymph that we've been finding in a number of small streams in Sugar Hollow which had the temporary designation of Isoperla sp. VA has now been identifed as Isoperla nelsoni. Exciting news to those of us who see it every spring -- usually in April and May -- but have failed to find any adults to help us with the ID.
Isoperla nelsoni, the adult, was first described in a long article by S.W. Szcytko and B.C. Kondratieff, pp. 174-177 in "A Review of the Eastern Nearctic Isoperlinae (Plecoptera: Perlodidae) With The Description of Twenty-two new species," Monographs of Illesia, Number 1:1-289 (2015).
One thing of interest, the head pattern we see on the mature nymph, this,
with a dark patch enclosed in the ocellar triangle and a dark patch anterior to it, shows up as well on the head of the adult. (See the illustration of that on p. 175 of the article.)
Exciting news. We had found this nymph first in May of 2011.
شركة مكافحة حشرات بالدمام بافضل الاسعار
ReplyDeleteالان احصل علي خدمة مكافحة كافة انواع الحشرات بسعر ممتاز ومناسب فقط اطلب الخدمة من مكافحة حشرات فنحن قادرون علي ابادة كافة الحشرات الزاحفة و الطائرة واعطاء ضمان بمدة 6 شهور متواصلة
يمكننا الضاء علي البق و الحشرات الصغيرة التي تتواجد في الفراش وغيرها