Notes on a Few Bombyces, Hybrids, &C

Psyche: A Journal of Entomology, Mar 2019

Alfred Wailly

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Notes on a Few Bombyces, Hybrids, &C

International Journal of NOTES ON A FEW BOMBYCES HYBRIDS In my report on silk-producing bomby- complete failure that can be recorded.-ces and other lepidoptera, reprinted from The moths emerged from the middle of the Journal of the Society of Arts, 13 Feb. April to the middle of July with a few exand 5 March 1880 I speak of the disas- ceptions all crippled. The greater part trous effects of the weather on most species of the cocoons did not produce moths some during the year 1879. were dead on arriving in London; others This year although the splendid weather died later either from the attacks of parain August and in the early part of Septem- sites or from some other cause. Not a ber allowed of the successful rearing of single pairing could be obtained. I would several species in the open air the wet and be glad to try this species again. cold weather lasting till about the end of Samia ceanothi. Of about forty coJuly affected and retarded lepidoptera as coons the first moth emerged in March in 1879 for instance the moths of Samia the second on 3 April the rest continued promethea had not all emerged before the to emerge till 18 July. Only two pairings end of August. With a few exceptions were obtained. The larvae, reared on none of the moths of Indian species emerged plum (Prunus) and will(w (Salix), did not at all. thrive and all died some going into their Actias luna. I bred this species this third stage. None of my correspondents, year for the first time and most success- as far as I know succeeded with this spefully on walnut (Juglans). It thrived cies. Evidently plum and willow are not well also on a nut tree in my garden to- proper food plants for S. ceanothi. gether with larvae of Telea polyphemus The first pairing took place 27 June the and Samia cecropia. Unfortunately the second 10 July. The ova of the first sparrows destroyed all the larvae which brood hatched 18 days and those of the were on that tree, when they were already second 15 days after having been deat the end of their third stage. My Euro- posited. penn correspondents were all I think, suc- The larvae somewhat similar to those cessful with the rearing of Actias luna. of S. cecropia in first and second stage but Yet I must observe that many ova obtained of a lighter color, showed a marked differfrom well paired A. luna moths and ova of ence in the third stage and were thus: other species, were not fertile a fact which Back of body sky bluet sides greenish yelI attribute to the low temperature of the low; tubercles golden yellow all along the month of June affecting the moths, bac] and on the sides blue; head green. Samia glover. Of this species I re- Hybrids. Although Samia gloveri received a very large number of cocoons from fused to pair among themselves I had seva young entomologist, but I regret to say eral crossings between S. glovei S. ceathe attempt at rearing them was the most nothi and S. cecropia. The ova obtained PSyChE, Rec., no. 1717. - from a long pairing of S. ceanothi 9 with S. gloveri ); were the only ones that were fertile. Unfortunately the larvae reared on willow and plum all died some reaching like S. ceanothi the third stage, The pairing of S. ceanothi 9 with S. gloveri was from the evening of 20 to the evening of 21 May. The larvae hatched from 15 to 21 June; the majority having hatched 16 and 17 June. First stage. Larger larvae; black smaller ones fallow; the colors becoming of a more unifbrm hue as the larvae increased in size. Very much like S. cecropia larvae, Second stage. Larvae yellow with black tubercles; head black. Third stage. Back bluish sides; yellow. Tubercles on back, orange-red tubercles on sides; blue head; yellow. The other crossings resulting from the keeping of various species together in large cages when 5 and 9 moths of the same species were not (btained at the same time; are the following: in ahot-house; 22 May; Telea polyphemus 9 and Attacus mylitta % of the Bombay race; T. polyphemus 9 and Attacus pernyi Samia gloveri 9 and A. pernyi % in my house at ordinary temperature 12 and 13 June Samia ceanothi 9 and S. cecropia 5 15 June S. gloveri 9 and S. cecropia % 18 and 19 June; S. cecropia 9 and S. ceanothi %. In all the above cases the ova were infertile. ON AN AQUATIC SPHINX LARVA. BY ttERMAI AUGUST I-IAGE CAlYIBRIDGE IIASS. The following letter from the Baron yon caterpillar. As I am familiar with all the Reizenstein in New Orleans La. was sent other known larvae of the genus l=?hilamto me as a scientific communication by Dr. pelus and it is not probably that .of Ph. J. L. LeConte of Philadelphia:-- labruscae a strictly tropical species which From larvae and pupae of a sphinx in I do not know so it is very likely an entirely my possession; there is every reason for be- new species. lieving that I have made a new acquisition Of the other species of Philampelus (peto the lepidopterous fauna of Louisiana. culiar only to the new continent) are until They belong to the genus Phlampelus; but now only known and described: Philamthe larvae fir exceed in size those of the pelus vitis Linn. Ph. achemon Ph. satelother known sphingidae even of the true litia Ph. fasciatus, and Ph. lycaon Cram. sphinx Macrosila rustica (Sphinx chion- (posticatus Grote), all occurring here, exanthi). I found the larvae feeding on the cept achemon; a northern species and whose floating Nymphaea in the very centre of a larvae are all known to me. draining canal in the outskirts of the city. There remains then only Philampelus When I discovered them their whole body labruscae; which I do not believe is the with the exception of the first three segments sphinx in question. Of 25 larvae (now all was submerged in the vater. When they pupae) in my possession I preserved one had devoured one patch of the water plants in alcohol to have an argumentum ad they swam with great facility to a new one hominem" for a further occasion when I the first instance I ever experienced of this will prepare a correct drawing of the inhabit in the larva of a sphinx or in any sect in all its stages. 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Alfred Wailly. Notes on a Few Bombyces, Hybrids, &C, Psyche: A Journal of Entomology, DOI: 10.1155/1880/80213