Anastrepha Schiner Research Articles

Fruit flies of the genus Anastrepha (Diptera: Tephritidae) from some localities of Paraguay: new records, checklist, and illustrated key.

This study deals with fruit flies of the genus Anastrepha Schiner (Diptera: Tephritidae) collected in McPhail traps in the municipalities of Concepción, Belén, Horqueta, Loreto (state of Concepción) and Santa Rosa (state of Misiones), Paraguay. In total, 17 species were captured, 9 of which are new records for Paraguay. All morphological characters used for species identification are illustrated. RESUMEN. Se estudió las especies de moscas de las frutas del género Anastrepha Schiner (Diptera: Tephritidae), colectadas en trampas tipo McPhail en las localidades de Concepción, Belén, Horqueta (Departamento de Concepción) y Santa Rosa (Departamento de Misiones). En total fueron capturadas 17 especies, de las cuales nueve especies corresponden a nuevos registros para el Paraguay. Todos los caracteres morfológicos para la identificación de las especies fueron ilustrados.

Faunistic analysis of the species of Anastrepha Schiner (Diptera: Tephritidae) in three municipalities of the state of Roraima, Brazil

The purpose of this work was to describe the population patterns of Anastrepha in three municipalities of the state of Roraima, Brazil, via faunistic analysis. Weekly collections were performed from January through December 2008, using McPhail traps containing 5% hydrolysed protein, in domestic orchards in the municipalities of Boa Vista, Bonfim and Pacaraima. We captured 301 females of Anastrepha in Boa Vista, 212 in Bonfim, and 167 in Pacaraima. Boa Vista presented the highest species richness (S = 10) and Pacaraima the lowest (S = 4). Anastrepha striata was the predominant species in Boa Vista (47.18%) and Pacaraima (65.87%), whereas A. obliqua predominated in Bonfim (46.23%). Boa Vista presented the highest Shannon-Wiener diversity index (H' = 1.19) and Margalef index (α = 1.58), and Bonfim presented the highest Pielou's evenness index (J' = 0.69). In Pacaraima the cumulative curves reached stability, confirming that the observed and expected species richness were the same. In the other two municipalities, the curves showed a moderate growth, suggesting that the sampling effort was not sufficient to produce an accurate depiction of species richness. In this study, Anastrepha zernyi is reported for the first time in Roraima.

Residual Control and Lethal Concentrations of GF-120 (spinosad) for Anastrepha spp. (Diptera: Tephritidae)

The objective of this study was to determine the relationship between residual time of GF-120 (spinosad) treatment and mortality in three species of Anastrepha Schiner. Concentrations of 96, 72, 48, and 24 ppm were aged on mango leaves under field conditions for 0, 3, 7, 10, 14, 17, and 21 d after application. We found that Anastrepha ludens, A. obliqua, and A. serpentina were highly sensitive to spinosad. The effects of spinosad were not reduced over the 4 d after the initial application, even at a concentration of 24 ppm. Mortality at 14 d after the application of 72 and 96 ppm of spinosad was similar in each of the three fruit fly species. In addition, we found that 24 ppm of spinosad was consumed the most by each species even though no direct relationship between the rate of consumption per female and the dose of the product was observed, in this test, higher consumption of active ingredient was observed at a concentration of 72 ppm, for A. ludens, 48 ppm for A. obliqua, and 96 ppm for A. serpentina. Our results suggest that a spinosad concentration of 72 ppm may effectively control these pests for at least 10 d under field conditions.

Species of fruit flies (Diptera: Tephritidae): in a transect of the Amazonian Rainforest in Oiapoque, Amapá, Brazil

Species of fruit flies (Tephritidae) were surveyed in a transect of the Amazonian Rainforest in the district of Clevelândia do Norte, municipality of Oiapoque, state of Amapa, Brazil. This study describes the diversity of fruit fly species sampled inside this transect (2.2 linear km). Eleven McPhail traps were serviced weekly from June 2002 to June 2003. A total of 55 samples were obtained, totaling 125 specimens of Tephritidae. Anastrepha Schiner, 1868 was the most abundant and diverse genus, with 18 species caught. Two new species, A. oiapoquensis Norrbom & Uchoa, 2011 and A. siculigera Norrbom & Uchoa, 2011, were discovered in this survey. Anastrepha coronilli Carrejo & Gonzalez, 1993 (n = 40) was the most abundant species. Six species, Anastrepha amita Zucchi, 1979, A. duckei Lima, 1934, A. flavipennis Greene, 1934, A. minensis Lima, 1937, A. pseudoparallela (Loew, 1873), and A. submunda Lima, 1937, are recorded for the first time from Amapa. Three of them, A. minensis, A. pseudoparallela, and A. submunda, are reported for the first time from northern Brazil. This paper updates to 36 the number of frugivorous species of Tephritidae in Amapa.

New species of Anastrepha Schiner (Diptera, Tephritidae) from remnant area of the Atlantic Rain Forest and surroundings in the state of Espírito Santo, Brazil

New species of Anastrepha Schiner (Diptera, Tephritidae) from remnant area of the Atlantic Rain Forest and surroundings in the state of Espírito Santo, Brazil

New Records of Neotropical Fruit Flies (Tephritidae), Lance Flies (Lonchaeidae) (Diptera: Tephritoidea), and Their Host Plants in the South Pantanal and Adjacent Areas, Brazil

Abstract Fruit flies (Tephritidae) and lance flies (Lonchaeidae) (Diptera) include pests of highest economic importance to horticulture around the world, because various species damage high value fruit crops, These Tephritoidea are the reason for quarantine barriers among many countries, limiting the commerce of fresh fruits and vegetables. Knowledge of frugivorous tephritoid species richness and their interactions with the host plants are extremely important to Integrated Pest Management. This paper presents the interactions of 15 species of Anastrepha Schiner, Ceratitis capitata (Wiedemann) (Tephritidae), and eight species of Neosilba McAlpine (Lonchaeidae) with 40 host fruit species. We discovered that Pouteria glomerata (Miquel) Radlkofer (Sapotaceae) is the host fruit of Anastrepha undosa Stone. A. zernyi Lima was associated with fruit of Anacardium othonianum Rizzini (Anacardiaceae). This is the first record of A. zernyi from the State of Mato Grosso do Sul, and of A. hastata Stone from Central Brazil, A. sorocula Zucchi and A. zenildae Zucchi were the tephritids that infested the highest number of host fruits, A. alveatoides Blanchard, A. distincta Greene, A. macrura Hendel, A. rheediae Stone and A. undosa Stone were recovered from only one species of host, and all of these associations are new records. Also established for the first time are the associations among eight species of Neosilba with 38 host species. N. zadolicha McAlpine and Steyskal, N. pendula (Bezzi), N. glaberrima (Wiedemann) and N. inesperata Strikis and Prado were the most polyphagous Lonchaeidae.

New species of Anastrepha Schiner (Diptera, Tephritidae) from remnant area of the Atlantic Rain Forest and surroundings in the state of Espírito Santo, Brazil

Four new species of Anastrepha Schiner were collected in McPhail-type traps hung in trees in a natural reserve and in commercial papaya orchards in Linhares, Espírito Santo state, Brazil. They are described and named herein as follows: Anastrepha atlantica n. sp., Anastrepha glochin n. sp., Anastrepha linharensis n. sp. and Anastrepha martinsi n. sp. Only the latter was collected in traps hung in papaya orchards. The classification of these species in species groups of Anastrepha is also discussed.

Performance of Anastrepha obliqua (Diptera, Tephritidae) larvae fed on artificial diets

Moscas das frutas do gênero Anastrepha Schiner, 1868 são conhecidas por sua importância econômica devido aos danos que elas causam nos frutos comerciais. As exigências nutricionais dos estágios imaturo e adulto são diferentes e as larvas não se desenvolvem bem utilizando a mesma dieta do adulto. Embora as necessidades nutricionais básicas dos insetos sejam bem conhecidas, existe ainda o problema de elaborar dietas de criação adequadas para espécies com necessidades específicas. O objetivo deste trabalho foi verificar o efeito de diferentes tipos e quantidades de carboidratos na dieta sobre a performance larval de Anastrepha obliqua (Macquart, 1835). Larvas foram criadas individualmente em tubos de ensaio contendo uma das dietas artificiais a serem testadas onde elas foram mantidas até a pupação. A composição básica das dietas testadas incluia 2,5 g de agar, 3,25 g de levedo de cerveja e quantidades variadas de sacarose e farinha de trigo. A adequação do meio artificial para A. obliqua foi testada pela avaliação da sobrevivência larval e pupal (%) e o tempo de desenvolvimento larval, pupal e de larva-adulto. A dieta contendo farinha de trigo (2 g) e sacarose (2 g) e a dieta somente com sacarose (5,5 g) foram as que apresentaram melhor performance larval. Todas as dietas testadas apresentaram resultados similares ou superiores às dietas utilizadas em outros trabalhos. A importância da presença da farinha de trigo e seu valor nutricional para as larvas são discutidos.

Parasitóides (Hymenoptera: Braconidae) de Anastrepha Schiner (Diptera: Tephritidae) no estado do Acre

Este trabalho relata a primeira ocorrência de parasitóides em moscas-das-frutas do gênero Anastrepha Schiner no estado do Acre. No município de Bujari foram encontrados os braconídeos Opius bellus Gahan (72,5%), Doryctobracon areolatus (Szépligeti) (26,8%) e Utetes anastrephae (Viereck) (0,7%) associados a A. obliqua (Macquart) em frutos de taperebá (Spondias mombin L.), com parasitismo de 29,5%. No município de Rio Branco, em frutos de goiaba (Psidium guajava L.), ocorreu somente D. areolatus em A. obliqua com parasitismo de 2,7%.

Fopius arisanus oviposition in four Anastrepha fruit fly species of economic importance in Mexico

We studied the oviposition performance of Fopius arisanus (Sonan) (Hymenoptera: Braconidae) attacking eggs of four fruit flies of the genus Anastrepha Schiner (Diptera: Tephritidae) under laboratory conditions. The complete process of oviposition on an individual egg of Anastrepha ludens (Loew) lasts in average 85.4 ± 2.9 s, including a tremor (25.8 ± 1.03 s) observed in the middle of this process related to the egg’s descent. The average parasitism of A. ludens egg was 60.9 ± 7.5%, with only 1.2% of superparasitized eggs. During individual acts of oviposition, we noted that F. arisanus possesses a highly flexible ovipositor that curves easily as it searches for additional suitable eggs, which may be of particular benefit when a female finds large clutches of eggs. The individual oviposition of F. arisanus in host fruits attacked by Anastrepha spp. varies with the egg clutch size of each fruit fly species: A. serpentina laid the biggest egg clutches (21.3 ± 1.4), followed by A. ludens (14.2 ± 0.9), and A. striata (1.0 ± 0.0) (=A. obliqua). The time spent by F. arisanus in individual ovipositions was parallel to these findings, reinforcing the idea that F. arisanus attacks several eggs in each individual insertion of its ovipositor. Neither formal oviposition acts, nor adult emergences of F. arisanus were registered in A. obliqua. We discuss the potential of F. arisanus as natural enemy of fruit flies of the genus Anastrepha, and explore the eventual developing of its mass rearing.

Análise faunística de moscas-das-frutas (Diptera: Tephritidae) nas regiões norte e noroeste do Estado do Rio de Janeiro

This study aimed to characterize the fruit fly populations in three municipalities of the Northern region and two municipalities of the Northwestern region of Rio de Janeiro State, Brazil, and to evaluate the similarity among their populations. A faunistic analysis was performed from the fruit fly specimens captured in plastic McPhail traps with an aqueous solution of hydrolyzed protein to 5% placed in orchards of guava (Psidium guajava L.) and/or other fruits during 26 months. The total of 3,952 females of 15 species of Anastrepha Schiner and 277 females of Ceratitis capitata (Wied.) was captured. The species richness differed among the municipalities, with the highest value in São Francisco do Itabapoana (S = 14), resulting on the highest Shannon-Wiener index (H = 1.27). The equitability was low in the five municipalities due to the dominance of one unique fruit fly species. The predominant species (more frequent, constant and dominant) were Anastrepha obliqua (Macquart) in Campos dos Goytacazes and São Francisco do Itabapoana, Anastrepha fraterculus (Wied.) in Cambuci and Itaocara, and Anastrepha sororcula Zucchi in São João da Barra. Fruit fly populations had low diversity index of Margalef (alpha = 0.58 to 1.82). Regarding to fruit fly species composition, the populations in São João da Barra and Cambuci were more similar between each other, composing a distinct group from the populations in Campos dos Goytacazes and Itaocara. These two groups differed quite a lot from the population in São Francisco do Itabapoana.

Biodiversidade de moscas-das-frutas (Diptera, Tephritoidea) em matas nativas e pomares domésticos de dois municípios do Estado do Tocantins, Brasil

Este trabalho apresenta analise faunistica comparativa das especies de moscas-das-frutas capturadas em armadilhas McPhail (junho a dezembro de 2002) com proteina hidrolisada de milho a 5%. Foram comparadas a riqueza de especies e a estrutura populacional entre ambientes de mata e pomar dos municipios de Palmas e Porto Nacional, TO. Foram capturados 1.748 individuos de especies de tres generos de Tephritidae: Tomoplagia Coquillett, 1910, Anastrepha Schiner, 1868 e Ceratitis MacLeay, 1829. De Lonchaeidae foram capturadas especies de tres generos: Lonchaea Fallen, 1820, Neosilba McAlpine, 1962 e Dasiops Rondani, 1856. Ceratitis capitata (Wiedemann, 1824). Dezenove especies de Anastrepha foram coletadas, sendo a maioria dos individuos (69,1%) de A. obliqua (Macquart, 1835). Nao houve diferenca significativa (P < 0,05) do numero medio de especies coletadas entre municipios e entre ambientes, mas o numero medio de individuos de Tephritidae do municipio de Palmas e do ambiente mata foram significativamente menores do que de Porto Nacional e pomar, respectivamente. Pelo indice de diversidade de Shannon (H'), utilizado para comparar a diversidade de moscas-das-frutas entre os ambientes dos dois municipios, verificou-se que apenas a diversidade do pomar de Palmas (H' = 1,96) foi maior do que a do pomar de Porto Nacional (H' = 0,81). Na determinacao dos indices faunisticos, A. obliqua e A. distincta Greene, 1934 apresentaram-se geralmente como constantes, dominantes e muito abundantes.

Medidas do acúleo na caracterização de cinco espécies de Anastrepha do grupo fraterculus (Diptera: Tephritidae)

Species identification of the genus Anastrepha Schiner is based mostly on the shape of the aculeus apex. In some species groups, such as fraterculus, species are separated by subtle differences in the aculeus apex, namely Anastrepha fraterculus (Wied.), A. obliqua (Macquart), A. sororcula Zucchi, A. zenildae Zucchi and A. turpiniae Stone. In order to help the identification, the aculei of these five species from 25 localities of 17 Brazilian states were measured. The aculeus and apex lengths of these species vary along geographical distribution and even from specimens reared from same host. For this reason and due to superimposition, these Anastrepha species cannot be separated based on the two measures exclusively.

Sequence Analysis of Nuclear rDNA of &lt;I&gt;Anastrepha suspensa&lt;/I&gt;

Ribosomal DNA sequence data has been important in elucidating molecular evolution, discerning phylogenetic relationships, and in developing species diagnostics. Species in the genus Anastrepha Schiner, particularly members of the Fraterculus Species Group, are considered the most important native pests of fruit in the New World. This study presents the Þrst complete rDNA sequence data spanning the 5.8S to the internal transcribed spacer ITS2 of a species in this genus, Anastrepha suspensa (Loew). The GC content of the rDNA genes in A. suspensa was 50.8 to 40% for the 5.8S and 2S genes, respectively, but spacers were 84% AT rich. Spacer and gene lengths were of similar size to those found in other tephritids. Except for A. fraterculus s.l. (Wiedemann), spacers of other tephritid taxa were AT rich and contained numerous simple repeats. Sequence alignment with A. fraterculus s.l. indicated minor differences in the 5.8S rRNA gene, but the ITS2a was identical and the 2S gene differed by a single transition. The ITS2 of A. fraterculus s. l. was unusual in having a 41.7% GC content with three regions of C repeats. The ITS2 ofA.suspensa had higher percent identity values with Þve species in other genera than it did with A. fraterculus s.l., suggesting an unusually high divergence rate in the latter.

Flutuação populacional de espécies de Anastrepha Schiner (Diptera: Tephritidae) na região de Manaus, AM

Este trabalho apresenta a flutuação populacional de espécies de Anastrepha Schiner (Diptera: Tephritidae) capturadas em frascos caça mosca tipo McPhail com melado de cana a 10%. Os espécimes de Anastrepha foram coletados semanalmente durante 80 semanas, de maio de 1996 a dezembro de 1997. As armadilhas foram distribuídas em dois locais, Escola Agrícola Rainha dos Apóstolos EARA - localizada na BR 174, km 23 e Estação Experimental de Fruticultura Tropical do INPA EEFT localizada na BR 174, km 40, no município de Manaus, AM. Foram capturadas 13 espécies: A. striata Schiner, A. obliqua (Macquart), A. leptozona Hendel, A. serpentina (Wied), A. distincta Greene, A. bahiensis Lima, A. antunesi Lima, A. coronilli Carejo e Gonzalez, A. furcata Lima, A. atrigona Hendel, A. flavipennis Greene, A. zernyi Lima e Anastrepha sp. 2 (não identificada). Foi demonstrado que o fator mais importante na determinação da ocorrência e da flutuação populacional de moscas-das-frutas é a disponibilidade de frutos hospedeiros e não fatores abióticos. Registrou-se uma baixa correlação (r = 0,0748, P > 0,05) entre o número de moscas/armadilha.dia (MAD) e a precipitação. A época de maior precipitação coincide com o período de maior frutificação. Provavelmente, fatores não avaliados como a disponibilidade de hospedeiros alternativos, de inimigos naturais e sucessão hospedeira exerceram influência na população de moscas nesses locais. Este é, provavelmente, o primeiro registro de A. zernyi para a Região Norte do Brasil.

Análise faunística de moscas-das-futas (Diptera: Tephritidae) da região noroeste do estado do Rio de Janeiro

This paper aimed to characterize the fruit fly populations in four municipalities of the Northwest region of Rio de Janeiro State (Bom Jesus do Itabapoana, Italva, Itaperuna and Natividade), performing a faunistic analysis of the specimens of fruit fly collected with plastic McPhail traps in commercial orchards of guava (Psidium guajava L.) and orange (Citrus sinensis Osbeck), and backyard gardens during a two year period. The total of 29,909 females of Ceratitis capitata (Wied.) and 27,621 females belong to 16 species of Anastrepha Schiner was collected. The highest value of the Shannon index was reported in Bom Jesus do Itabapoana (H = 0.96), as well as highest species richness (S = 14). Fruit fly populations had low diversity indexes (a = 1.1 - 1.5). The predominant species (more frequent, more abundant, constant and dominant) were C. capitata in Natividade and Bom Jesus do Itabapoana, and A. fraterculus (Wied.) in Italva and Itaperuna. Regarding fruit fly species composition, the population in Natividade and Bom Jesus do Itabapoana were more similar between each other, composing a distinct group of the fruit fly populations from Italva and Itaperuna, which composed another group.

Biodiversidade de moscas-das-frutas do gênero Anastrepha (Diptera, Tephritidae) no campus da ESALQ-USP, Piracicaba, São Paulo

Este trabalho foi conduzido na area abrangida pelo campus da Escola Superior de Agricultura Luiz de Queiroz da Universidade de Sao Paulo, no municipio de Piracicaba, Estado de Sao Paulo. Teve como objetivos, determinar a composicao do genero Anastrepha Schiner e verificar a associacao das especies de plantas hospedeiras, estabelecidas na area, com as especies de Anastrepha. Foram examinadas 23.277 femeas de Anastrepha coletadas por meio de armadilhas McPhail e 18 especies pertencentes a nove grupos de especies foram registradas. Um total de 563 amostras de frutos pertencentes a nove familias e, pelo menos, 23 especies de plantas foi coletado em 47 estacoes de capturas. Foram identificadas 10.243 femeas e das 18 especies de Anastrepha capturadas em armadilhas somente seis emergiram das amostras de frutos: A. bistrigata Bezzi, A. fraterculus (Wied.), A. obliqua (Macquart), A. pseudoparallela (Loew), A. serpentina (Wied.) e A. sororcula Zucchi. A. fraterculus infestou maior diversidade de frutos. Os hospedeiros preferidos de A. obliqua foram as especies da familia Anacardiaceae. A. pseudoparallela e A. serpentina infestaram exclusivamente Passifloraceae e Sapotaceae, respectivamente. A. fraterculus e registrada pela primeira vez em sapoti (Manilkara zapota L.) no Brasil.

Species Diversity of Frugivorous Flies (Diptera: Tephritoidea) from Hosts in the Cerrado of the State of Mato Grosso do Sul, Brazil

Thirty-five fruit species were sampled in seven municipalities located in the cerrado of the state of Mato Grosso do Sul (January 1993 to March 1997) in a study to evaluate the infestation by frugivorous flies. Species of six genera of Tephritoidea were reared from 29 host fruits: Anastrepha Schiner, Ceratitis MacLeay (Tephritidae); Dasiops Rondani, Lonchaea Fallen, Neosilba McAlpine, (Lonchaeidae) and Notogramma Loew (Otitidae). Fruit flies (Tephritidae) were found in 19 host fruits and were represented by 11 species: Anastrepha fraterculus (Wied.), A. grandis (Macquart), A. montei Lima, A. obliqua (Macquart), A. pickeli Lima, A. sororcula Zucchi, A. striata Schiner, A. turpiniae Stone, A. zenildae Zucchi, Anastrepha n. sp. and Ceratitis capitata (Wied.). From Lonchaeidae were reared: Dasiops inedulis Steyskal, Dasiops spp., Lonchaea spp., Neosilba zadolicha McAlpine and Neosilba spp. The species of Neosilba were the most abundant, occourring in 22 host fruits. Notogramma was the only genus of Otitidae obtained. The association between frugivorous flies and the fruit species is discussed.

New Records of Anastrepha sagittata and A. montei (Diptera: Tephritidae) from Western Mexico

In the Americas south of the United States, there are close to 700 described tephritid species (Foote 1967). Tephritid fruit flies of the genus Anastrepha Schiner are distributed between the parallels 27? North and 350 South (Stone 1942). Most of the 184 known species occur in the tropical areas of Central and South America. Several species have a wide host range and are regarded as the most important native fruit pests (Hernandez-Ortiz & Aluja 1993). In Mexico there are 31 recorded Anastrepha species, but a large proportion of them are reported only in the southeast of the country, mainly in the states of Chiapas and Oaxaca (HernAndez-Ortiz 1992, HernandezOrtiz & Aluja 1993). The Apatzingan Valley is located in the state of Michoacan, M6xico, between 18?41'-19?14' latitude and 101?55'-102?54' longitude. The altitude ranges from 300 to 900 m above mean sea level. The climate is hot and dry or semi-dry, and the annual mean temperature is 28?C. The rainy season occurs from June to October and averages 700 mm annually. In this valley populations of fruit flies have been monitored with McPhail traps and food bait continuously since 1987. Prior to this report, the following species had been recorded: Anastrepha bicolor (Stone), A. chiclayae Greene, A. ludens (Loew), A. obliqua (Macquart), A. pallens Coquillett, A. serpentina (Wiedemann) andA. striata Schiner (Miranda 1989). In August 1994, one female and one male of Anastrepha sagittata (Stone) were trapped at the locality of Acahuato (900 m altitude). The specimens were identified by Vicente Hernandez-Ortiz and they are deposited as vouchers in the insect collection of the Instituto de Ecologia A. C. at Jalapa, Veracruz. Previous detections of A. sagittata in Mexico were reported from the state of Morelos only (Fig. 1) (Hernandez-Ortiz 1992). Our report expands the range ofA. sagittata nearly 350 km to the west, over one of the major mountain ranges of the country and very close to the Pacific coast (Fig. 1). Another new record for the state of Michoacan is Anastrepha montei Costa Lima, trapped in the Apatzingan Valley (Fig. 1). Its identity was established by Carlos Estrada and vouchers were deposited in the Medfly Program collection at Metapa, Chiapas. In August and September 1994, we recovered 13 females and 14 males at Paracuaro (650 m altitude), and 6 females and 10 males at Acahuato. This species has been recorded previously in the states of Chiapas, Oaxaca and Guerrero, on the Pacific coast of Mexico (Hernandez-Ortiz 1992), and in Tamaulipas on the Gulf of M6xico coast (Reyes & Leyva 1989) (Fig. 1). The known range of A. montei is thus extended approximately 300 km westward to a different region which is geographically isolated from the other areas where this species has been recorded in M6xico.

New Record for Anastrepha montei (Diptera: Tephritidae) from Northeastern Mexico

The genus Anastrepha Schiner has a widespread distribution including southern Texas and Florida in the United States, Mexico, Central and South America, and the Caribbean Islands (Stone 1942). To date, more than 190 species of Anastrepha are recognized (Steyskal 1977, Foote 1980, Norrbom 1985, Steck & Wharton 1988), of which 13 species were reported to occur in Mexico (Stone 1942). Recently, 19 additional species have been recorded for Mexico, including A. montei Costa Lima (Aluja et al. 1987, Hernandez 1989). The population phenology of A. ludens (Loew) is currently being monitored with McPhail traps placed on its native host, yellow chapote, Sargentia greggii Watson (Plummer et al. 1941), and several cultivated hosts. The study is being conducted in central Tamaulipas, Mexico (23-24? North latitude, and 99-99? 30' West longitude). One adult A. montei was captured in this area near Ciudad Victoria, Tamaulipas, in late August 1987. The specimen was identified by Dr. Allen L. Norrbom (USDA-ARS Systematic Entomology Laboratory) who also confirmed the absence of prior records of A. montei in northeastern Mexico. Before the report of Aluja et al. (1987) the northernmost known distribution of A. montei was San Mateo, Costa Rica (Stone 1942) at about 100 North latitude. With the present report, the known distribution of A. montei is expanded more than 1000 km northwest from Chiapas. Cassava [Manihot dulcis (Gmelin) Pax and M. esculenta Crantz] is the only recorded host of A. montei. The larvae of A. montei feed inside the seed capsules of their hosts (Stone 1942). Manihot esculenta is a very important food crop, particularly in Africa (Nartey 1978). The specimens trapped by Aluja et al. (1987) were caught in the vicinity of cassava plants. In our case, a single female was trapped in a yellow chapote stand. Although there may be some cassava located in private gardens, it is not cultivated in this region of Tamaulipas, which suggests the possibility of additional host plants for A. montei. We thank M. Rose, R. A. Wharton, L. A. Rodriguez, and B. Overholt, Texas A & M University for their review of this manuscript. It is approved as TA No. 24332 by the Texas Agricultural Experiment Station, College Station, Texas.