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《Acta Parasitologica Et Medica Entomologica Sinica》 2006-01
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YANG Xiao-Ye LI Yun-Zhang BAO Bayincang WANG Zhi LIU Zhen-Lian(College of Animal Science and Animal Medicine,Inner Mongolia Agricultural University,Huhhot 010018)  
The optical microscope observation on Cephenemyia trompe showed that the first instar larvae are(2.45±0.03)mm×(0.74±0.01)mm,yellowish-white,spindle-shaped.Each segment has the dense denticles ventrally aligned in rows and only the rudiments of denticles dorsally,which is characterized by the long tassel-like denticles on the last row and lateral parts of each segment.The end of the larvae has a row of comb-shaped denticles.The second instar larvae are(11.32±0.08)mm×(6.10±0.05)mm,cylinder-shaped with two ends slightly narrowed.Each segment is surrounded with six to eight rows of denticles dorsally and ventrally which are long and dark.The comb-like denticles on the ends are more and bigger than L1.The third instar larvae are(33.20±0.006)mm×(10.22±0.03)mm and brownish -yellow.Each segment is surrounded with denticles which are denser and bigger on segments Ⅴ-Ⅷ,especially on dorsum.There is a region of shuttle-shaped denticles at the central anterior part between segments Ⅳ-Ⅷ dorsally.Denticles on lateral parts of each segment ventrally are much bigger.There is a bigger denticles part on the posterior margin of each segment ventrally with long and sharp denticles.The denticles shapes of the third larvae were distinct on different positions,which are cone-shaped,laterally cone shaped or aquiline beak shaped.The adults are like a bumble bee and 14mm~16mm in length.There is a clear convexity on the central of the antennal groove.Its abdomen has yellowish-black hairs.Wing is characterized by 2R_5 wing-cell which is narrowly opened and m_2 vein which is slightly long and bends down to the posterior.
【Fund】: 國家自然科學基金資助項目(30160066)
【CateGory Index】: S858.25
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