Texas Nature Observations and Reminiscenses Page: 34
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34 TEXAS NATURE OBSERVATIONS AND REMINISCENCES.
similar stinging implements,
though varying in certain genera.
The stinging implements of most
insects, in the inactive state, are
concealed in a hollow sheath along
:the base and interior part of the
;proboscis, which comprises the
flexible suction tube or tongue,
in some insects. When in theand serves to accumulate and ab-
sorb the blood particles.
It is quite well known that a
variety of insects, in particular
bloodd sucking insects, are liable
to transmit morbid tissue-pro-
ducts and pathogenic micro orga-
ism upon man and animals. This
is the case with some species of
flies, which can transmit anthrax
bacilli, after feeding on some such
diseased animal, and produce the
malignant pustule; and the horsefly
with its powerful developed mouth-
parts of daggers and lancets, scari-
fies the thick hide of animals
until blood oozes from the wounds,
and these scarified places often
suppurate later on, and are then
infested by other insects, especially
the blowfly, which deposits numer-
ous eggs, from which the screw-
worms develop; or the small gnat-
flies, and mosquitoes, feed on
the suppurating surfaces, trans-
mitting pus and blood corpuscels,
etc., upon other animals or man,-
for instance, opthahlnitis, etc.,
when coining in contact with the
conjunctiva of the eye. Ticks,
and especially the common )bedbugs
are also on record as bacteria
transmitters,-notably also the tu-
bercle bacillus from phthisical pati-
ents: and the cattle tick, it is
r .-A l()SQUIT)o's HEAI
IM PLE MIEN'I'Sact of stinging the needle-pointed
daggers are separated from the
hollow sheath and, through muscu-
lar action at the base parts and
rythmical motions are gradually
pierced through the skin up to
the capillary layers, when blood
is liberated and absorbed through
suction.
The original photograph of a
mounted mosquitoe's mouth parts
shows one of the daggers inside the
central sheath, andl two slightly
curved daggers outside of same. The
knoblike endl part of this broad, hol-
low proboscis is jointed at its lower
part, and consists of two hairy pads,
which is also set in motion by the
mosquito during the suction act.quite
dluces
Yevers senit:isN " T l 'n I I ' x \5
conclusively l)prove
the so-called Texa
hro cuhtl ilut,,llation.Pi{OTO MICRO; RAP1H I )
\1) STFINGING111,1< I : ,
n, prott-
s cattle/
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Menger, R. Texas Nature Observations and Reminiscenses, book, 1913; San Antonio, Texas. (https://texashistory.unt.edu/ark:/67531/metapth143558/m1/38/?rotate=90: accessed May 7, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu; crediting University of Texas Health Science Center Libraries.