Larvicidal activity of a congeneric set of N-2-halo- (and 2,6-dihalo) benzoyl-N-phenylureas were determined in in vivo tests against the lesser mealworm, Alphitobius diaperinus (Panzer). Substituent modifications were made in both the benzoyl and anilide portions of the molecule. Linear regression analysis was used to derive quantitative structure-activity relationships (QSAR) from LC50 and LC99 values and a series of physicochemical substituent parameters. The analysis resulted in two significant single parameter regression equations selecting Hammett σp constant as the only relevant chemical descriptor and rejecting the other descriptors as insignificant. Penfluron and 2,6-difluoro-N-[[[4-(trifluoromethoxy) phenyl]amino]carbonyl]benzamide were potent larvicides in these tests and exceeded the effectiveness of diflubenzuron and triflumuron.

Feeding abamectin B, (ABM, MK-936) to fall armyworm moths, Spodoptera frugiperda (J. E. Smith), and corn earworm moths, Heliothis zea (Boddie), resulted in lowered electroretinogram pulse voltages at all wavelengths of stimulating light. Feeding or injecting adult face flies, Musca autumnalis De Geer, with codeine lowered overall ocular neural response (ERG voltage). Face fly spectral sensitivity was altered by feeding cannabinol or thebane in sucrose water.

Adult male or female Oncopeltus fasciatus (Dallas) did not reproduce when they were topically treated with 1 μg of diflubenzuron or penfluron. The same dose of AI3-63220 ( N -[[(4-bromophenyl)amino]carbony1]-2,6-difluorobenzamide) prevented reproduction by treated males or reduced by 90% the hatch of eggs laid by treated females. Of the 3 compounds tested the most active was penfluron: in males, a dose of 0.01 μg/insect prevented transfer of sperm; in females, this dose did not affect egg hatch but prevented maturation of nymphs. In confinement, treated males transferred some penfluron to untreated females, but the fertility of these females was lowered only when the initial dosage was 1–10 μg/♂.

Chemischer InformationsdienstVolume 4, Issue 31 Natural Products ChemInform Abstract: INSEKTENJUVENILHORMONE, HOCHWIRKSAME SYNTHETISCHE PRODUKTE R. SARMIENTO, R. SARMIENTOSearch for more papers by this authorT. P. MCGOVERN, T. P. MCGOVERNSearch for more papers by this authorM. PEROZA, M. PEROZASearch for more papers by this authorG. D. JUN. MILLS, G. D. JUN. MILLSSearch for more papers by this authorR. E. REDFERN, R. E. REDFERNSearch for more papers by this author R. SARMIENTO, R. SARMIENTOSearch for more papers by this authorT. P. MCGOVERN, T. P. MCGOVERNSearch for more papers by this authorM. PEROZA, M. PEROZASearch for more papers by this authorG. D. JUN. MILLS, G. D. JUN. MILLSSearch for more papers by this authorR. E. REDFERN, R. E. REDFERNSearch for more papers by this author First published: July 31, 1973 https://doi.org/10.1002/chin.197331439AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinked InRedditWechat No abstract is available for this article. Volume4, Issue31July 31, 1973 RelatedInformation

Journal Article Relative Toxicity of Several Carbamates to the Honey Bee and the large Milkweed Bug Get access R. J. Argauer, R. J. Argauer Entomology Research Division, Agr. Res. Serv., USDA, Beltsville, Md. 20705 Search for other works by this author on: Oxford Academic PubMed Google Scholar R. E. Redfern, R. E. Redfern Entomology Research Division, Agr. Res. Serv., USDA, Beltsville, Md. 20705 Search for other works by this author on: Oxford Academic PubMed Google Scholar H. Shimanuki H. Shimanuki Entomology Research Division, Agr. Res. Serv., USDA, Beltsville, Md. 20705 Search for other works by this author on: Oxford Academic PubMed Google Scholar Journal of Economic Entomology, Volume 65, Issue 3, 1 June 1972, Pages 924–925, https://doi.org/10.1093/jee/65.3.924 Published: 01 June 1972 Article history Received: 07 September 1971 Published: 01 June 1972

Juvenile hormone activity of 42 mixed ethers containing an aromatic and a terpenoid moiety was compared with that of four 3,4-(methylenedioxy) phenyl analogues against the large milkweed bug, Oncopeltus fasciatus (Dallas), and the yellow mealworm, Tenebrio molitor L. Wide differences in activity between the 2 species were observed for the compounds with 17 different aromatic substituents. Several ethers were more active than their 3,4-(methylenedioxy) phenyl analogues.

AbstractLinalool (Ia) bzw. Äthyllinalool (Ib) geben mit Phosphortribromid in Pentan die Bromide (II), die beim Erhitzen mit 17 substituierten Natriumphenolaten in die Geranyläther (IV) übergehen.

Journal Article Response of the Male Southern Armyworm in a Field Cage to Prodenialure A and Prodenialure B Get access R. E. Redfern, R. E. Redfern Entomology Research Division, Agr. Res. Serv., USDA Search for other works by this author on: Oxford Academic PubMed Google Scholar E. Cantu, E. Cantu Entomology Research Division, Agr. Res. Serv., USDA Search for other works by this author on: Oxford Academic PubMed Google Scholar W. A. Jones, W. A. Jones Entomology Research Division, Agr. Res. Serv., USDA Search for other works by this author on: Oxford Academic PubMed Google Scholar Martin Jacobson Martin Jacobson Entomology Research Division, Agr. Res. Serv., USDA Search for other works by this author on: Oxford Academic PubMed Google Scholar Journal of Economic Entomology, Volume 64, Issue 6, 1 December 1971, Pages 1570–1571, https://doi.org/10.1093/jee/64.6.1570 Published: 01 December 1971 Article history Received: 20 April 1971 Published: 01 December 1971

AbstractDie aus der Raupe der südlichen Baumwollmotte (Prodenia eridania) isolierbaren weiblichen Sexuallockstoffe wurden als Acetate (XI) und (XII) identifiziert.

Two experimental aerosols, one containing allethrin and the other tetramethrin, were compared with a standard aerosol containing pyrethrins plus DDT that has been used to disinsect aircraft. Caged adult Anastrepha ludens (Loew) were exposed to 6, 8, 10, 12, and 40/g aerosol per 28.3 m3. Knockdown was determined after 10-minute exposure and mortality at 24, 48, and 72 hours. The allethrin aerosol was the most effective of the three because of a combination of fast kill and the small increase in dose required to obtain a large increase in kill.

Journal Article Compounds Related to Juvenile Hormone. VII. Activity of Selected Nitrogen-Containing Terpenoid Compounds on the Yellow Mealworm Get access Meyer Schwarz, Meyer Schwarz Entomology Research Division, Agr. Res. Serv., USDA, Beltsville, Maryland 20705 Search for other works by this author on: Oxford Academic PubMed Google Scholar Nobel Wakabayashi, Nobel Wakabayashi Entomology Research Division, Agr. Res. Serv., USDA, Beltsville, Maryland 20705 Search for other works by this author on: Oxford Academic PubMed Google Scholar Philip E. Sonnet, Philip E. Sonnet Entomology Research Division, Agr. Res. Serv., USDA, Beltsville, Maryland 20705 Search for other works by this author on: Oxford Academic PubMed Google Scholar R. E. Redfern R. E. Redfern Entomology Research Division, Agr. Res. Serv., USDA, Beltsville, Maryland 20705 Search for other works by this author on: Oxford Academic PubMed Google Scholar Journal of Economic Entomology, Volume 63, Issue 6, 15 December 1970, Pages 1858–1860, https://doi.org/10.1093/jee/63.6.1858 Published: 15 December 1970 Article history Received: 13 March 1970 Published: 15 December 1970

While we were rearing the yellow mealworm, Tenebrio molitor L., at the Beltsville laboratory for use as an indicator insect in studies of juvenile hormones, we noted that about 10% of the prepupae were dying. When these presumably diseased insects were examined under 365-nm radiation in a dark room, about 30% were found to fluoresce a strong greenish-yellow. A similar fluorescence was observed when extracts of the diseased fluorescent insects were plated on Trypticase™ Soy Agar plates. Pfeiffer and Stammer (1930) observed a similar phenomenon in yellow mealworms and named the causative bacterium Bacterium hemophosphoreum (since reclassified as Brucella hemophosphoreum (Pribram 1933). Seleen and Stark (1943) reported some type characteristics of over 199 green-fluorescent pigment-producing bacteria, one of which, Pseudomonas fiuorescens Migula, was characterized in detail by Rhodes (1959). We have attempted to isolate the strongly fluorescent product produced in the yellow mealworm, without proof that we in fact had the same organism as earlier reported. Brucella hemophosphoreum is not available through the American Type Culture Collection.

Journal Article Bioassay of the Sex Pheromone of the Southern Armyworm Get access R. E. Redfern, R. E. Redfern Entomology Research Division, Agr. Res. Serv., USDA Search for other works by this author on: Oxford Academic PubMed Google Scholar B. A. Butt, B. A. Butt Entomology Research Division, Agr. Res. Serv., USDA Search for other works by this author on: Oxford Academic PubMed Google Scholar Eluid Cantu Eluid Cantu Entomology Research Division, Agr. Res. Serv., USDA Search for other works by this author on: Oxford Academic PubMed Google Scholar Journal of Economic Entomology, Volume 63, Issue 2, 1 April 1970, Page 658, https://doi.org/10.1093/jee/63.2.658 Published: 01 April 1970

Seventy-two candidate chemicals were evaluated as chemosterilants for Tetranychus urticae Koch. Sixty-five materials had little or no effect on egg hatch but 6 caused some reduction in number of eggs deposited, and 7 were equal to or superior to apholate in reducing hatch. Also, 6 materials were toxic to the mites at the higher concentration, and 2 were highly phytotoxic.