Journal of Entomology1812-56701812-5689Asian Network for Scientific Information10.3923/je.2007.68.81 Samia ricini (Donovan) (Lepidoptera: Saturniidae)]]>KumarVineet KariappaB.K. BabuA.M. DandinS.B. 2200742The eggshell of the eri moth, Samia ricini (Donovan) (Lepidoptera: Saturniidae) was investigated by scanning electron microscopy. The surface of the egg chorion of eri moth, revealed the structural elements viz., the micropylar rosette surrounding the micropyle, micropylar canals, shell imprints, aeropyles and the regional differentiation at the different poles. The oval shaped eggs were measured 820-990 (878.72±21.23) μm in length. The highly decorated chorion of S. ricini had a micropylar rosette of 45-51 (48.0±1.02) μm diameter with a centrally located micropylar pit of 2.08-2.31 (2.21±0.036) μm diameter. The micropylar pit consists of seven micropylar openings, each micropylar opening ranged from 0.26-0.28 (0.27±0.003) μm in diameter. Each micropylar opening opens into the seven distinct micropylar canals. The micropylar apparatus encircled by 11-14 petal-shaped primary unequal cells. These cells ranged from 12.0-12.9 (12.48±0.13) μm in length forming an asymmetrical rosette. The secondary petal-shaped cells were short in length and measured 8.4-9.1 (8.72±0.12) μm surrounded the primary petal cells. The entire surface of the chorion had a reticulate pattern of pentagonal and hexagonal cells, each boarded by 4-6 aeropyles of diameter 0.22-0.25 (0.23±0.05) μm. Further, the sunken aeropyles were also observed for the first time in second hemisphere of the egg and measured 0.22-0.24 (0.23±0.003) μm in diameter.]]>Arbogast, R.T., L.G. Le Cato and R.V. Byrd,19809165177Arbogast, R.T., J.H. Brower and R.G. Strong,1989Tienea pallescentella, Tinea occidentella Chambers and Niditinea fuscella (L.) (Lepidoptera: Tineidae).]]>18321328Beament, J.W.L.,1948Rhodnius prolixus Stal.]]>39359383Downey, J.C. and A.C. Allyn,198034135145Downey, J.C. and A.C. Allyn,198161129Fehrenbach, H., V. Dittrich and D. Zissler,1987Cydia pomonella (L.) (Tortricidae), Heliothis virescens (Fabr.) and Spodoptera littoralis (Boisd.) (Noctuidae).]]>16201219Fehrenbach, H.,1989Hepialus hecta (L.) Wiseana umbraculata (Guenea) (Hepialidae), Mnesarchaea fusilella Walker and M. acuta Philp (Mnesarchaeidae) (Lepidoptera: Exoporia).]]>18261274Hill, L.,198294959Hinton, H.E.,196914343343Hinton, H.E.,1981pp: 1125pp: 1125Kafatos, F.C., J.C. Regier, G.D. Mazur, M.R. Nadel and H.M. Balu et al.,19771977pp: 45-145pp: 45-145Korschelt, E.,188751185252Kumar, V., A.M. Babu, B.K. Kariappa, K.P. Jayaswal, R.L. Katiyar and R.K. Datta,1999Spilarctia obliqua Walker (Lepidoptera: Arctiidae).]]>82137143Kumar, V., M.N. Morrison, A.M. Babu and V. Thiagrajan,2002Eocanthecona furcellata (Wolff.): Ultrastructure of micropylar processes and egg burster.]]>226773Kumar, V., V. Kumar, S. Rajadaurai, A.M. Babu and R.L. Katiyar et al.,2002Diaphania pulverulentalis (Hampson) (Lepidoptera: Pyralidae) egg.]]>11307310Kumar, V., S. Rajadurai, A.M. Babu and B.K. Kariappa,2003Amata passalis F. (Lepidoptera: Amatidae).]]>23325330Leuckart, R.,18551855Matheny, E.L. and E.A. Heinrichs,197265238246Margaritis, L.H., F.C. Kafatos and W.H. Peteri,1980Drosophila melanogaster. I. Fine structure of the layers and regions of the wild-type eggshell.]]>43135Margaritis, L.H.,19851985pp: 153-230pp: 153-230Mazzini, M.,197455343372Muller, K.,1938Plodia interpunctella).]]>151192242Reiger, J.C., G.D. Mazur and F.C. Kafatos,198076286304Rosciszewska, E.,1991Perla marginata (Panzer, 1799) and Dinocras cephalotes (Curtis, 1827) (Plecoptera: Perlidae).]]>20189203Sakaguchi, B., H. Chikushi and H. Doira,1973Bombyx mori.]]>185362Salkeld, E.H.,19831263271Salkeld, K.,19841271167Tuft, P.H.,195026327334Wigglesworth, V.B. and J.W.L. Beament,195091429452