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Description of the Mature Larva of Phaedon (Othosticha) semimarginatus affinis Guérin (Coleoptera: Chrysomelidae: Chrysomelinae)

Nora C. Cabrera
The Coleopterists Bulletin
Vol. 55, No. 1 (Mar., 2001), pp. 30-36
Stable URL: http://www.jstor.org/stable/4009566
Page Count: 7
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Description of the Mature Larva of Phaedon (Othosticha) semimarginatus affinis Guérin (Coleoptera: Chrysomelidae: Chrysomelinae)
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Abstract

The mature larvae of Phaedon (Orthosthica) semimarginatus affinis Guérin is described and illustrated. This larva shares several morphological features with other members of the genus. It is similar to P. concinus Stephens and P. conchleariae (F.) in that tubercles Es and Ss are fused on meso and metathorax and the absence of Dae in segments 1-6. Frontal setae (f 2) are absent on larvae of P. (O.) s. affinis, tubercles Dai and Dae are separated on meso and metathorax, and only tubercle Dai is present on abdominal segments 1-3. Natural history is also discussed.

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