JAN 3 - 1914 
The Ohio T^aturalist, 
PUBLISHED BY 
The Biological Club of the Ohio State University. 
Volume XIV. DECEMBER, 1913. 
No. 2. 
TABLE OF CONTENTS. 
HiNE-The Genus Myiolepla. 205 
Schaffner —The Classification of Plants, XI .. . 211 
Bilsing —Preliminary List of the Spiders of Ohio . .. 215 
Schaffner— The Sprouting of the Two Seeds of a Cocklebur.216 
Summer in a Bog. 217 
McAvoy—M eeting of the Biological Club. 217 
Philpott —An Addition to the Odouata of Ohio. 219 
Hine— A Note on Ansx longipes Hagen . 219 
THE GENUS MYIOLEPLA. 
(Family Syrphidae.) 
Jas. S. Hine. 
The insects falling in this genus are modest colored, medium 
sized flies usually found about flowers of various kinds in spring 
or early summer. About a dozen valid species have been described; 
three or four from the old world, two from South America and 
seven from North America. M. luteola Gmelin, from Europe, 
is the type species. 
The marginal cell of the wing is open, the anterior cross¬ 
vein is distinctly before the middle of the discal cell; antenn® 
short, but located on a distinct prominence, third segment rather 
large with a long bare dorsal arista inserted near its base; legs 
rather stout, all the femora enlarged, and serrate towards the tip 
but without any distinct tooth, tibiae all curved. The eyes are 
holoptic or nearly so in the males and rather widely separated in 
the female, bare in both sexes. Face hollowed out beneath the 
antennae with a prominent facial tubercle in the male followed 
by an equally prominent oral margin; in the female the concavity 
beneath the antennas is a steady curve to the oral margin. 
The genus was founded by Newman in 1838 in his Ento¬ 
mological Magazine, Vol. V, p. 373, as Myolepta to receive M. 
luteola Gmelin. In 1844 Rondani proposed the name Xylotaeja 
and placed in it Syrphus valgus Panzer. These two species are 
now considered as belonging to the same genus and since the 
former, more correctly spelled Myiolepta, has priority it is used 
by modern students. It is of interest that Walker has referred 
to this genus as Leptomyia in Insecta Britannica Diptera Vol. 
I, p. 254. The species do not appear to be so common as many 
205 
LIBRAI 
NEW YC 
BOTANK 
tiAKDE 
