Texas Nature Observations and Reminiscenses Page: 29
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TEXAS NATURE OBSERVATIONS AND REMINISCENCES. 29
flies in a small and thin glass,
and it was observed how the fly
deposited the living larvae, which
soon crawled around the interior
of the glass. As a rule, however,
most species of flies deposit prema-
ture ova and sooner or later,
according to temperature and other
environments, these are developed
into the larva and pupa states.
l ', , l r\fqfr i li EFL.IE
Slightly Magnified: Lower One with Opened Abdo-
men, Showing the Matured Eggs or Flyworms (Lar-
Both of these flies, I may state,
when captured on a window pane,
were quite large and the abdomen
distended, and one deposited living
worms shortly after being put into
the small glass.
How immensely the flies breed
and multiply during the hot season
is well known and illustrated
herein-each of the small creeping
"worms" on the photo representing
- future fly. I had prepared the
view during an outing and hunting
trip to a relative's farm where
the entrails of a small cotton tail
rabbit were purposely hung up
on a board to attract the blowfly.
It was in hot summer time, and
hardly had an hour passed when the
entire intestines and the board
itself swarmed with blowflies and
others of the pestiferous insects.
Fly eggs and living flyworms were
soon present by the millions, and
the photo seen herein was taken
on the second day with a close
focusing lens and a Bausch & Lomb
extension camera, showing the
uncountable swarm of living fly
worms. Had this same board with
the rabbit entrails been properly
screened not one of these fly
worms would have been present.
Now, this also gives us a good
lesson in how to destroy a fu-
ture fly scourge in its incipient
stage-simply by pouring a quart
of boiling water on such masses
of blowfly worms and eggs of
flies. In camp also, this method
of putting a piece of entrails,
some rotten cheese, or meat, dead
fish, etc., to a place outside
of camp, but near same, will
attract all or most of the flies in
the near vicinity and keep them
from molesting the campers.
Chief Entomologist Howard, in
his admirable works on insect
life, states that the period of
development of the fly ova were
found to be about as follows
(in the climate around Washington,
D. C.): "Egg from deposition
to hatching, one third of a day;
hatching of larvae to first molt,
MRIuAus (,F LIVE LARVALy. FLIES
(Maggots) and Eggs Deposited by Sswarm of
Flies on Entrails of Rabbit (One-half Natural
one day; first to second molt,
one day; second molt to pupation
three days; pupation to issuing
of the adult, five days; total life
round, approximately ten days.
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Menger, R. Texas Nature Observations and Reminiscenses, book, 1913; San Antonio, Texas. (texashistory.unt.edu/ark:/67531/metapth143558/m1/33/?q=menger: accessed June 26, 2017), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; crediting University of Texas Health Science Center Libraries.