Identification of Minor Sex Pheromone Components of the Poplar Clearwing Moth Paranthrene tabaniformis (Lepidoptera, Sesiidae)

A chemical analysis of the crude sex pheromone gland extracts of virgin calling Paranthrene tabaniformis females, obtained from the European part of Kazakhstan, revealed the presence of five compounds: (3E,13Z)-octadeca-3,13-dien-1-ol (E3,Z13-18:OH), (3Z,13Z)- octadeca-3,13-dien-1-ol (Z3,Z13-18:OH), (2E,13Z)-octadeca-2,13-dien-1-ol (E2,Z13-18:OH), (13Z)-octadec-13-en-1-ol (Z13-18:OH), and octadecan-1-ol (18:OH) at the ratios 64.0 : 32.4 : 1.4 : 0.9 :1.3, which are structurally related to sex pheromone components of clearwing moths. Our previous field tests showed synergistic effects of Z3,Z13-18:OH and E2,Z13-18:OH to attract P. tabaniformis males, when these compounds were tested in binary mixtures with the known sex pheromone E3,Z13-18:OH. The three dienic alcohols should all be considered as sex pheromone components of the P. tabaniformis species, while the role of Z13-18:OH and 18:OH remained unclear.

Sex Attractants for Six Clearwing and Tineid Species (Lepidoptera, Sesiidae and Tineidae) from Kazakhstan and Lithuania

Sex attractants for 3 Sesiidae and 3 Tineidae moth species in West-Kazakhstan and Lithua­nia were discovered by field screening tests of (3Z,13Z)-, (3E,13Z)-and (2E,13Z)-octadeca-dien-1-ols and their acetates as well as of some binary mixtures of these compounds. Total amount of chemicals was 0.3 mg/dispenser. Males of Synanthedon serica were attracted by a 5:5 mixture of 3E,13Z-18:OA c and 2E,13Z-18:OAc, Chamaesphecia bibioniformis by a 9:1 mixture of 3Z,13Z-18:OAc and 3E,13Z-18:OAc, Paranthrene tabaniformis by a 1:9 mixture of 3Z,13Z-18:OH and 3E,13Z-18:OH , Tinea nonimella by a 1:9 mixture of 3E,13Z-18:OH and 2E,13Z-18:OH , Monopis monachella by a 1:9 mixture of 3Z,13Z-18:OH and 2E,13Z -18:OH, and Nemaxera betulinella by a 9:1 mixture of 2E,13Z-18:OAc and the corresponding alcohol. The periods of attraction to the traps were registered for males of S. serica and Ch. bibioniformis and were found to occur at 15 - 18 and 1 5 -17 o'clock, local time, respectively.

Two new Eulophidae (Hymenoptera: Chalcidoidea) of economic importance from China

Two new species of Eulophidae, which are potential biological control agents of economically important pests, are described from China. Aprostocetus prolixussp. n. (Tetrastichinae) is an egg-parasitoid of Apriona germarii (Hope) (Coleoptera: Cerambycidae), and Hyssopus grossorissp. n. (Eulophinae) is a larval parasitoid of Paranthrene tabaniformis (Rottenburg) (Lepidoptera: Sesiidae). The species Elachertus pallidus Askew is transferred to Hyssopus, comb. n.

Note on Paranthrene tabaniformis Rott., a Moth New to North America (Lepidoptera: Aegeriidae)

In July, 1952, at Mount Pearl, Newfoundland, larvae were found boring into the trunk of an injured balsam poplar, Populus balsamifera L. In June, 1953, six moths emerged from sections of the injured trunk placed in a cage in an insectary.Dr. T. N. Freeman (in litt.), Entomology Division, Ottawa, who determined the moth as Pyranthrene tabaniformis Rott. (vespiformis Westwood), stated that this was probably the first record of this European species in North America. This was confirmed by Mr. Kelvin Dorward (in litt.), Economic Insect Survey Section, United States Department of Agriculture, Washington, D.C.