00812nas a2200253   4500008004100000245006300041210005500104300001100159653001800170653001800188653001800206653002700224653002700251653001100278653001800289653002700307653003100334653001400365653002300379653002300402653002500425100002800450856008000478       1953                        eng d00aOn a collection of Curculionidae (Cole-optera) from Angola0 acollection of Curculionidae Coleoptera from Angola  a99-11910aCurculionidae10aCylas pumilus10aDeiradocranus10aDeiradocranus latebris10aEchinocnemus cavicauda10aGethen10aGethen luscus10aOmotrachelus angolanus10aPalaeocorynus cristicollis10aTypoderus10aTypoderus deceptor10aTypoderus machadoi10aTypoderus machadoi .1 aMarshall, Sir, G. A. K.  uhttps://weevil.myspecies.info/collection-curculionidae-cole-optera-angola-001269nas a2200181   4500008004100000020001400041245012800055210006900183260001000252300001000262490000700272520058800279653002200867653002700889100001700916700001900933856013500952       2007                        eng d  a1343-878600aA new species of Bracon (Hymenoptera: Braconidae) parasitic on alien sweetpotato weevils in the south-west islands of Japan0 anew species of Bracon Hymenoptera Braconidae parasitic on alien   cMarch  a55-630 v103 aA new species of braconid, Bracon yasudai Maeto et Uesato sp. nov., is described here from the south-west islands of Japan. It is a solitary idiobiont ectoparasitoid of the larvae of the West Indian sweetpotato weevil, Euscepes postfasciatus (Curculionidae), and the sweetpotato weevil, Cylas formicarius (Brentidae), both feeding on Ipomoea batatas (L.) (Convolvulaceae). The percentage parasitism of the braconid on E. postfasciatus in the vines of I. batatas was 19.9-40.7% in the field. Bracon cylasovorus (Rohwer) reared from C. formicarius in the Philippines is also described.10aCylas formicarius10aEuscepes postfasciatus1 aMaeto, Kaoru1 aUesato, Takumi  uhttps://weevil.myspecies.info/new-species-bracon-hymenoptera-braconidae-parasitic-alien-sweetpotato-weevils-south-west-islands-j-000810nas a2200253   4500008004100000245006300041210005500104300001100159653001800170653001800188653001800206653002700224653002700251653001100278653001800289653002700307653003100334653001400365653002300379653002300402653002500425100002800450856007800478       1953                        eng d00aOn a collection of Curculionidae (Cole-optera) from Angola0 acollection of Curculionidae Coleoptera from Angola  a99-11910aCurculionidae10aCylas pumilus10aDeiradocranus10aDeiradocranus latebris10aEchinocnemus cavicauda10aGethen10aGethen luscus10aOmotrachelus angolanus10aPalaeocorynus cristicollis10aTypoderus10aTypoderus deceptor10aTypoderus machadoi10aTypoderus machadoi .1 aMarshall, Sir, G. A. K.  uhttps://weevil.myspecies.info/collection-curculionidae-cole-optera-angola01269nas a2200181   4500008004100000020001400041245012800055210006900183260001000252300001000262490000700272520058800279653002200867653002700889100001700916700001900933856013500952       2007                        eng d  a1343-878600aA new species of Bracon (Hymenoptera: Braconidae) parasitic on alien sweetpotato weevils in the south-west islands of Japan0 anew species of Bracon Hymenoptera Braconidae parasitic on alien   cMarch  a55-630 v103 aA new species of braconid, Bracon yasudai Maeto et Uesato sp. nov., is described here from the south-west islands of Japan. It is a solitary idiobiont ectoparasitoid of the larvae of the West Indian sweetpotato weevil, Euscepes postfasciatus (Curculionidae), and the sweetpotato weevil, Cylas formicarius (Brentidae), both feeding on Ipomoea batatas (L.) (Convolvulaceae). The percentage parasitism of the braconid on E. postfasciatus in the vines of I. batatas was 19.9-40.7% in the field. Bracon cylasovorus (Rohwer) reared from C. formicarius in the Philippines is also described.10aCylas formicarius10aEuscepes postfasciatus1 aMaeto, Kaoru1 aUesato, Takumi  uhttps://weevil.myspecies.info/new-species-bracon-hymenoptera-braconidae-parasitic-alien-sweetpotato-weevils-south-west-islands-jap01617nas a2200193   4500008004100000020001400041245010900055210006900164260001000233300001000243490000700253520092900260653002201189100002201211700002101233700002101254700001901275856012901294       2011                        eng d  a1612-475800aPre-exposure to sex pheromone did not affect mating behavior in the sweetpotato weevil Cylas formicarius0 aPreexposure to sex pheromone did not affect mating behavior in t  cMarch  a93-970 v843 aIn sterile insect technique (SIT) programs, the released sterile males are important for their effectiveness. The use of sex pheromones to collect males is economical; however, pre-exposure to sex pheromones may affect male mating behavior, and would thus reduce the effectiveness of the SIT programs. Males exposed to sex pheromone may become attractive to other males due to pheromone adsorption on their body impregnation, prevent mating and reduce the dispersal of sterile males. We examined the effect of pre-exposure to sex pheromone on the mating behavior of male sweetpotato weevil Cylas formicarius. Pre-exposure to high-dose sex pheromone for 24 h did not affect the male mating behavior of C. formicarius, and the exposed males did not attract other males. These results suggest that male C. formicarius that were collected from a mass-rearing facility using sex pheromone can be effectively used in SIT programs.10aCylas formicarius1 aKuriwada, Takashi1 aKumano, Norikuni1 aShiromoto, Keiko1 aHaraguchi, Dai  uhttps://weevil.myspecies.info/pre-exposure-sex-pheromone-did-not-affect-mating-behavior-sweetpotato-weevil-cylas-formicarius01584nas a2200193   4500008004100000020001400041245010100055210006900156260000800225300001200233490000700245520091200252653002201164100002201186700002101208700002101229700001901250856012101269       2011                        eng d  a0307-696200aAge-dependent investment in death-feigning behaviour in the sweetpotato weevil Cylas formicarius0 aAgedependent investment in deathfeigning behaviour in the sweetp  cJun  a149-1540 v363 aBecause life-history theory predicts that risky behaviours such as mating should increase as life expectancy decreases, predatory avoidance is expected to decrease with age. However, this prediction has not been examined. In the present study, the effect of age on death-feigning behaviour, a form of predatory avoidance behaviour in the sweetpotato weevil Cylas formicarius (Summers) (Coleoptera: Brentidae), is investigated by performing a longitudinal study. Because the effects of mating history and age usually cannot be distinguished, mating history is controlled. The results show that only female weevils decrease the investment in death-feigning behaviour with age, whereas male weevils do not show any age-related change. In addition, death-feigning behaviour of mated females is longer than that of virgin females, possibly because additional mating partners would be not needed by mated females.10aCylas formicarius1 aKuriwada, Takashi1 aKumano, Norikuni1 aShiromoto, Keiko1 aHaraguchi, Dai  uhttps://weevil.myspecies.info/age-dependent-investment-death-feigning-behaviour-sweetpotato-weevil-cylas-formicarius01884nas a2200193   4500008004100000020001400041245012600055210006900181260000800250300001400258490000800272520117300280653003401453100001701487700001501504700001801519700001801537856013501555       2010                        eng d  a0022-049300aEffect of Mass Rearing on Life History Traits and Inbreeding Depression in the Sweetpotato Weevil (Coleoptera: Brentidae)0 aEffect of Mass Rearing on Life History Traits and Inbreeding Dep  cAug  a1144-11480 v1033 aInadvertent selection is an important genetic process that frequently occurs during laboratory culture and maintenance of biological control agents and other beneficial organisms used in procedures such as the sterile insect technique (SIT). We investigated effects of mass rearing and inbreeding depression on life history traits (number of progeny emerging from host plants, body weight, developmental period, and starvation tolerance) in the sweetpotato weevil, Cylas formicarius elegantulus (Summers) (Coleoptera: Brentidae). The effect of inbreeding was measured by comparing the results obtained from the full-sib crosses with those obtained from nonkin crosses in both wild and mass-reared strains. The mass-reared strain had more progeny than the wild strain. The developmental period of mass-reared strain was shorter than that of the wild strain. Other traits did not differ significantly between strains. We detected inbreeding depression effects on numbers of progeny, and the effects were more pronounced in the mass-reared strain. Hence, laboratory adaptation to mass rearing can produce changes in important biological attributes of sweetpotato weevils.10aCylas formicarius elegantulus1 aKuriwada, T.1 aKumano, N.1 aShiromoto, K.1 aHaraguchi, D.  uhttps://weevil.myspecies.info/effect-mass-rearing-life-history-traits-and-inbreeding-depression-sweetpotato-weevil-coleoptera-bren01746nas a2200193   4500008004100000020001400041245012600055210006900181260001000250300001000260490000700270520103500277653002201312100002201334700002101356700002101377700001901398856013501417       2010                        eng d  a0015-404000aEFFECT OF IRRADIATION ON DEATH-FEIGNING BEHAVIOR IN THE MALE SWEETPOTATO WEEVIL CYLAS FORMICARIUS (COLEOPTERA: BLENTIDAE)0 aEFFECT OF IRRADIATION ON DEATHFEIGNING BEHAVIOR IN THE MALE SWEE  cMarch  a39-440 v933 aThe sterile insect technique (SIT) is widely used to suppress or eradicate target insect pest populations. The effectiveness of SIT depends on the ability of the released sterile males to mate with and inseminate wild females. Irradiation is effective for sterilizing mass-reared insects, and the negative impacts of this procedure are not limited to reproductive cell damage. In this study, we evaluated the death-feigning that is considered as an antipredator behavior of male Cylas formicarius (Summers) (Coleoptera: Blentidae) irradiated with 200 Gy, which is the dose used in the SIT program in Okinawa Prefecture. Irradiated male insects were observed in the laboratory for 10 d after irradiation. On d 0, fewer irradiated males feigned death than nonirradiated males. The number of irradiated and nonirradiated males who feigned death and the duration of their death-feigning were about the same from 2 d after irradiation. On the basis of our results, we discuss the optimal release time of irradiated male C. formicarius.10aCylas formicarius1 aKuriwada, Takashi1 aKumano, Norikuni1 aShiromoto, Keiko1 aHaraguchi, Dai  uhttps://weevil.myspecies.info/effect-irradiation-death-feigning-behavior-male-sweetpotato-weevil-cylas-formicarius-coleoptera-blen02071nas a2200193   4500008004100000020001400041245013300055210006900188260000900257300001400266490000700280520135000287653002201637100002201659700002101681700002101702700001901723856013501742       2011                        eng d  a0340-544300aInbreeding avoidance or tolerance? Comparison of mating behavior between mass-reared and wild strains of the sweet potato weevil0 aInbreeding avoidance or tolerance Comparison of mating behavior   cJuly  a1483-14890 v653 aInadvertent selection is an important genetic process that frequently occurs during laboratory culture. The mass-reared strain of the sweet potato weevil Cylas formicarius exhibits stronger inbreeding depression than the wild strain does. When inbreeding depression occurs in a population, mating with a close relative is often considered maladaptive; however, in some contexts, the inclusive fitness benefits of inbreeding may outweigh the costs, favoring individuals that tolerate a low level of inbreeding depression. Theory predicts that mass-reared strain weevils will avoid inbreeding while wild strain weevils will tolerate inbreeding. To examine this prediction, we compared the effect of relatedness on the mating and insemination successes in mass-reared and wild strains of C. formicarius. While close relative pairs of the wild strain copulated less frequently than non-kin pairs, almost all mass-reared strain pairs copulated irrespective of relatedness. The results showed that the strain with weak inbreeding depression (wild strain) avoided inbreeding, whereas the strain with strong inbreeding depression (mass-reared strain) tolerated inbreeding. The contradiction between the theoretical prediction and our results is discussed from the perspective of laboratory adaptation, mating systems, and life history of C. formicarius.10aCylas formicarius1 aKuriwada, Takashi1 aKumano, Norikuni1 aShiromoto, Keiko1 aHaraguchi, Dai  uhttps://weevil.myspecies.info/inbreeding-avoidance-or-tolerance-comparison-mating-behavior-between-mass-reared-and-wild-strains-sw01404nas a2200193   4500008004100000020001400041245011000055210006900165260000800234300001200242490000800254520073800262653002201000100001701022700001501039700001801054700001801072856012001090       2010                        eng d  a0931-204800aThe effect of mass-rearing on death-feigning behaviour in the sweet potato weevil (Coleoptera: Brentidae)0 aeffect of massrearing on deathfeigning behaviour in the sweet po  cSep  a652-6580 v1343 aThe aim of our study was to examine the effect of mass-rearing, in which there is no exposure to predators, on antipredator traits of insects for improving sterile insect technique programs. The duration of death-feigning (antipredator behaviour) in sweet potato weevil Cylas formicarius (Summers) (Coleoptera: Brentidae) after mass-rearing for 71 generations were compared with those in wild strain. There was no significant difference in the duration of death-feigning between wild and mass-reared strains. This indicated that the death-feigning behaviour of mass-reared strain was maintained for 71 generations even in the absence of,predators. We discuss the reasons why death-feigning behaviour is maintained after mass-rearing.10aCylas formicarius1 aKuriwada, T.1 aKumano, N.1 aShiromoto, K.1 aHaraguchi, D.  uhttps://weevil.myspecies.info/effect-mass-rearing-death-feigning-behaviour-sweet-potato-weevil-coleoptera-brentidae02217nas a2200181   4500008004100000020001400041245011200055210006900167260000900236300001200245490000800257520155600265653003401821100002101855700001901876700001701895856012301912       2007                        eng d  a0022-049300aEffect of irradiation on dispersal ability of male sweetpotato weevils (Coleoptera: Brentidae) in the field0 aEffect of irradiation on dispersal ability of male sweetpotato w  cJune  a730-7360 v1003 aWe used the mark-and-recapture method in the field to test the effect of gamma radiation on the dispersal ability of the male sweetpotato weevil, Cylas formicarius elegantulus (Summers) (Coleoptera: Brentidae), a serious sweetpotato pest in Japan. To evaluate the dispersal ability of male sweetpotato weevil, we released 27,218 males (13,302 males irradiated with a dose of 200 Gy and 13,916 nonirradiated males) in two replications (September and October 2005). Each replication lasted 5 d from the release of weevils to the removal of traps, and male weevils were released twice (1 and 3 d before trap setting). Forty pheromone traps were placed in lines corresponding to eight compass directions and five distance classes (20,50,100,200, and 500 m) in each replication. We captured 2,263 irradiated males (17.0%) and 2,007 nonirradiated males (14.4%) in the two replications. Six irradiated and eight nonirradiated males were captured in the traps 500 m far from the release point. All parameters to evaluate the dispersal ability of irradiated male sweetpotato weevil (recapture rate, dispersal distance, and dispersal direction) were similar to nonirradiated males in three of the four trials. However, parameters were different between irradiated males and nonirradiated males in one trial. Because the majority of parameters consistently show that the similarity of the dispersal ability, we considered that male sweetpotato weevil irradiated with a dose of 200 Gy possessed equal dispersal ability to that of nonirradiated males in the field.10aCylas formicarius elegantulus1 aKumano, Norikuni1 aKohama, Tsuguo1 aOhno, Suguru  uhttps://weevil.myspecies.info/effect-irradiation-dispersal-ability-male-sweetpotato-weevils-coleoptera-brentidae-field02257nas a2200205   4500008004100000020001400041245011800055210006900173260000800242300001400250490000800264520152900272653003401801100001501835700001701850700001801867700001801885700001501903856013301918       2010                        eng d  a0022-049300aAssessment of Effect of Partial Sterility on Mating Performance in Sweetpotato Weevil (Coleoptera: Curculionidae)0 aAssessment of Effect of Partial Sterility on Mating Performance   cDec  a2034-20410 v1033 aThe sterile insect technique (SIT) is widely used to suppress or eradicate target pest insect populations. Although the effectiveness of SIT depends on the ability of released sterile males to mate with and inseminate wild females, the use of gamma radiation to induce sterility negatively impacts reproductive cells as well as somatic cells. Consequently, sterilization by irradiation drastically diminishes mating performance over time. In the current study, we evaluated the effect of irradiation dose intensity on fertility, mating propensity, and mating competitiveness in sweetpotato weevil, Cylas formicarius elegantulus (Summers) (Coleoptera: Curculionidae), for 16 d after irradiation. Although the mating propensity of males irradiated with 200 Gy, the dose currently used to induce complete sterility of C. f elegantulus in the SIT program in Okinawa Prefecture, was equal to that of nonirradiated weevils for the first 6 d, the mating propensity of males irradiated with doses between of 75 and 150 Gy was maintained for the first 12 d. The potential fertilization ability of weevils was highly depressed compared with the control weevils, even in those treated with 75 Gy. Mating performance was severely compromised in weevils that were irradiated with a dose of 100 Gy or more. These results demonstrate that partial sterilization can be highly advantageous in eradication programs for the sweetpotato weevil. We discuss the advantages of the application of partial irradiation in insect eradication programs.10aCylas formicarius elegantulus1 aKumano, N.1 aKuriwada, T.1 aShiromoto, K.1 aHaraguchi, D.1 aKohama, T.  uhttps://weevil.myspecies.info/assessment-effect-partial-sterility-mating-performance-sweetpotato-weevil-coleoptera-curculionidae01909nas a2200181   4500008004500000020001400045245010400059210006900163260001100232300001400243490000800257520126200265653003401527100001501561700001801576700001501594856011801609       2008                        Engldsh    a0022-049300aEffect of irradiation on malting ability in the male sweetpotato weevil (Coleoptera: Curculionidae)0 aEffect of irradiation on malting ability in the male sweetpotato  cAugust  a1198-12030 v1013 aThe sterile insect technique (SIT) is widely used for suppressing or eradicating target pest insect populations. The effectiveness of SIT depends on the ability of released sterile males to mate with and inseminate wild females. Irradiation is the effective manner to sterilize mass-reared insects. The negative impacts of this procedure are not limited to damage on reproductive cells. Gamma-radiation damages the epithelial tissue of midgut, which affects the alimentation in insects. Irradiated males alter their mating behavior over time because of the depression of metabolic activity by sterilization. In this study, we evaluated the male mating performance and sexually compatibility of irradiated male Cylas formicarius elegantulus (Summers) (Coleoptera: Curculionidae) with a 200-Gy dose, as currently used in the SIT program in Okinawa Prefecture, throughout 16 d after irradiation in the laboratory. The mating ability of irradiated males did not differ from that of control males for about a week. However, the mating ability of irradiated male drastically decreased thereafter. We consider that irradiated male C. formicarius elegantulus with a 200-Gy dose had no major effect on male mating behavior approximately for a week after irradiation.10aCylas formicarius elegantulus1 aKumano, N.1 aHaraguchi, D.1 aKohama, T.  uhttps://weevil.myspecies.info/effect-irradiation-malting-ability-male-sweetpotato-weevil-coleoptera-curculionidae00783nas a2200181   4500008004100000020001400041245020500055210006900260260000800329300001200337490000700349653002200356100002300378700002100401700002300422700002200445856013400467       2007                        eng d  a0003-686200aA convenient estimation of the sources of sweet potato weevils, Cylas formicarius (Fabricius) (Coleoptera: Brentidae), in recently invaded areas in Japan, by random amplified polymorphic DNA technique0 aconvenient estimation of the sources of sweet potato weevils Cyl  cMay  a297-3030 v4210aCylas formicarius1 aKawamura, Kiyohisa1 aSugimoto, Tuyosi1 aMatsuda, Yoshinori1 aToyoda, Hideyoshi  uhttps://weevil.myspecies.info/convenient-estimation-sources-sweet-potato-weevils-cylas-formicarius-fabricius-coleoptera-brentidae01718nas a2200205   4500008004100000020001400041245013400055210006900189260000800258300001200266490000700278520097000285653002201255100002301277700001701300700001901317700002201336700001901358856013501377       2009                        eng d  a0003-686200aGeographic variation of elytral color in the sweet potato weevil, Cylas formicarius (Fabricius) (Coleoptera: Brentidae), in Japan0 aGeographic variation of elytral color in the sweet potato weevil  cNov  a505-5130 v443 aTo use elytral color morphs of Cylas formicarius as a genetic marker in its eradication using the sterile insect technique, the geographic distribution of the morphs was examined in the three main infested areas of Japan (Central Ryukyus, Southern Ryukyus, and Ogasawara Islands). In addition to the two known color morphs in Japan (bluish elytra (BE) and greenish elytra. (GE)), the piceous elytra (PE) was found mainly in the Southern Ryukyus at low frequency. The color morph frequencies varied between the Central and Southern Ryukyus and between locations within the two areas, while only BE was found in the Ogasawara Islands. PE would be useful for genetically marking sterile weevils to be released. Similarly, GE would be useful in some islands where GE is rarely or not found. BE frequencies on two islands in the Central Ryukyus (Amami and Okinawa) and two islands in the Southern Ryukyus (Miyako and Ishigaki) in 2006-2007 were higher than in 2002-2003.10aCylas formicarius1 aKawamura, Kiyohisa1 aOhno, Suguru1 aHaraguchi, Dai1 aKawashima, Shunji1 aKohama, Tsuguo  uhttps://weevil.myspecies.info/geographic-variation-elytral-color-sweet-potato-weevil-cylas-formicarius-fabricius-coleoptera-brenti01486nas a2200193   4500008004100000020001400041245012400055210006900179260000900248300001000257490000700267520078400274653002201058100002301080700001701103700001901120700001901139856013401158       2009                        eng d  a0021-491400aPCR-RFLP Discrimination between Okinawa and Ogasawara Strains of the Sweet Potato Weevil, Cylas formicarius (Fabricius)0 aPCRRFLP Discrimination between Okinawa and Ogasawara Strains of   c2009  a60-630 v533 aTo establish a simple method for discriminating Okinawa and Ogasawara strains of the sweet potato weevil, Cylas formicarius, about 560 bp of the internal transcribed spacer-1 (ITS-1) region of the ri- bosomal DNA (rDNA) of C. formicarius was collected from several is- lands of Okinawa Prefecture and Ogasawara Islands and analyzed by polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP). The 345 weevils collected in Okinawa and Ogasawara were discriminated correctly by the RFLP patterns with the restriction enzyme RsaI. The results suggest that C. formicarius originating from Ogasawara Islands is an effective genetic marking strain for an eradica- tion project using the sterile insect technique implemented by the Oki- nawa prefectural government.10aCylas formicarius1 aKawamura, Kiyohisa1 aOhno, Suguru1 aHaraguchi, Dai1 aKohama, Tsuguo  uhttps://weevil.myspecies.info/pcr-rflp-discrimination-between-okinawa-and-ogasawara-strains-sweet-potato-weevil-cylas-formicarius00811nas a2200193   4500008004100000020001400041245019800055210006900253260001300322300001000335490000700345653002200352100002300374700002100397700001900418700002300437700002200460856013500482       2007                        eng d  a0003-686200aGenetic variation of sweet potato weevils, Cylas formicarius (Fabricius) (Coleoptera: Brentidae), in main infested areas in the world based upon the internal transcribed spacer-1 (ITS-1) region0 aGenetic variation of sweet potato weevils Cylas formicarius Fabr  cFebruary  a89-960 v4210aCylas formicarius1 aKawamura, Kiyohisa1 aSugimoto, Tuyosi1 aKakutani, Koji1 aMatsuda, Yoshinori1 aToyoda, Hideyoshi  uhttps://weevil.myspecies.info/genetic-variation-sweet-potato-weevils-cylas-formicarius-fabricius-coleoptera-brentidae-main-infeste01950nas a2200169   4500008004100000020001400041245006900055210006900124260000900193300001200202490000700214520140200221653002201623100002101645700002201666856009201688       2006                        eng d  a1523-547500aEvaluation of pheromone traps for monitoring sweetpotato weevils0 aEvaluation of pheromone traps for monitoring sweetpotato weevils  cJuly  a141-1580 v233 aTen types of pheromone traps for monitoring sweetpotato weevils, Cylas formicarius (F.) (Coleoptera: Brentidae), were evaluated in sweetpotato fields at the U.S. Vegetable Laboratory, Charleston, South Carolina, during 2001 and 2002. A funnel trap, a modification of a water-pan trap, and the Pherocon sticky trap were the most effective for capturing male sweetpotato weevil adults. A universal trap, Multipher trap, boll weevil trap, a trap constructed from a five-gallon pail, and a trap made from a milk jug also captured significant numbers of weevils. A Japanese beetle trap and the plastic Pherocon CRW kairomone trap were not effective for trapping sweetpotato weevils. In separate experiments in 2005 and 2006, a trap made from a recycled plastic (PET) soft drink bottle was significantly less effective than the universal trap. Universal traps and PET bottle traps with soapy water were as effective as traps with a dichlorvos insecticide strip for a killing agent. Captures of male sweetpotato weevils in universal traps ranged 0.0-6.0 adults per trap per day during a 6-year period, 2001-2006 at the U.S. Vegetable Laboratory. Except for 2005, when population levels were unusually low, weevil captures increased rapidly during August and continued at high levels until freezing weather in November or December each year. Peak captures were generally from mid-September to mid-October.10aCylas formicarius1 aJackson, Michael1 aBohac, Janice, R.  uhttps://weevil.myspecies.info/evaluation-pheromone-traps-monitoring-sweetpotato-weevils