02737naa a2200265 a 450000100080000000500110000800800410001910000190006024500470007926000090012630000150013549000080015052020350015865000130219365000110220665000120221765000160222965000110224565000270225665300110228365300230229465300190231770000190233677301160235514624282006-03-09       2000    bl uuuu     u00u1 u    #d1 aVENTURA, M. U.  aFeeding behavior of Neomegalotomus Parvus.  c2000  ap.455. v.1  vv.1  aLaboratory studies with Neomegalotomus parvus nymphs in multiple-choice tests indicated that seeds of pigeon pea, lablab, and soybean were visited first than seeds of common bean. Percent dabbing/antennation resulting in probing and percent probing resulting in feeding was higher on common bean (97%) and pigeon pea (87%) seeds than on lablab (55%), soybean (50%) or rice. (5%) seeds. In tests using 10 nymphs/petri dish, a higher number of flanges was deposited on seeds of pigeon pea (41) than on common bean, lablab, soybean (&lt 11) or rice (0). After two, four and five days, nymphs located seeds of pigeon pea preferentially than seeds of the other foods tested. In tests with 1 nymph/dish, no significant differences were found in the number of flanges deposited on seeds of pigeon pea, common bean and lablab (ca. 30); &lt than 5 flanges were deposited on soybean and none rice seeds. In no-choice tests, the average duration of a feeding session and the longest feeding session was greater on lablab and, to a some extent on common beans than on pigeon pea, soybean or rice seeds. The number of feeding sessions was greater on seeds of common bean, pigeon pea and soybean compared to those on lablab or rice. Tests with N. parvus adults, indicated that pigeon pea seeds were located faster, followed by common bean, soybean and rice. When pods were used, dabbing/antennation time was shorter on pigeon pea than on soybean, and probing time was longer on soybean than on pigeon pea or common bean. On pigeon pea, 100% of the  insects probed the food, while on common bean and soybean pods, and on rice panicles these values dropped to 71.8%, 46.0%, and 10.5%, respectively. Adults showed similar feeding time on pigeon pea, common bean and soybean pods, and did not feed on rice panicles. Eletronic microscopy analysis indicated two apical lobes with 12 peg sensilla on the labium tip. Sensilla tips stained with silver nitrate solution indicated permeability of the cuticle and, therefore, their relationship with taste.  aAlydidae  aBrazil  aInsecta  aHeteroptera  aInseto  aPreferência Alimentar  aBrasil  aFeeding preference  aFood selection1 aPANIZZI, A. R.  tIn: INTERNATIONAL CONGRESS OF ENTOMOLOGY, 21., 2000, Foz do Iguassu. Abstracts... Londrina: Embrapa Soja, 2000.