Insects Visiting Blossoms of Spircea 127 
this species as having been bred from maple. No additional 
data is at hand. 
Leptura vagans Oliv., while never as numerous as several 
other species, has about the same seasonal distribution as 
L. proxina. Six specimens were taken in 1917 — three of 
the typical variety having black elytra with a reddish brown 
marginal stripe and three having the elytra entirely testa- 
ceous. In 1915 eight specimens showing about the same 
seasonal distribution were taken — two on August 1 and six 
on August 15. Of these, three are of the testaceous variety 
and five are typical. The larve have been reported (Wick- 
ham, 1897, p. 192) as boring in yellow birch and hickory 
and it is likely that the former of these two trees acts as host 
in the Elka Park region. 
Strangalia luteicornis Fabr. Only three of these were 
taken in the region studied — not a sufficient number for me 
to venture any statement regarding the period of greatest 
abundance. Nothing is known regarding its larva] host. 
Leptura rubrica Say begins to appear in numbers during 
the second week of the blooming season of spireea and con- 
tinues in considerable numbers for nearly a month. In 1914 
thirteen specimens were taken on July 23 and this species 
was doubtless at its maximum at that time, this being entirely 
in accord with the data on other forms which show that the 
season of 1914 was about two weeks earlier in its advance- 
ment than in 1915 and 1917. My field notes record copulat- 
ing couples as common on July 27 and August 3. L. rubrica 
has been bred from hickory at Syracuse. 
Leptura plebeja Rand. Only one specimen has been taken 
by me in the Elka Park region and this gives no basis for 
a conclusion regarding seasonal distribution. However, from 
the fact that I have specimens from Cranberry Lake taken 
on July 12 and September 16 it is believed this species may 
occur at any time in late summer. It is apparently not very 
common in either of the regions mentioned. An adult of 
this species has been obtained from spruce wood in the Cran- 
berry Lake region of the Adirondacks. 
