Annales de la Société entomologique de France (N S )

Ni\'eb\'e is a food leguminous plant cultivated in tropical Africa for its seeds rich in proteins. The main problem setted by its production is the conservation of harvests. In the fields as in the stocks, the seeds are destroyed by pests (bruchids). These bruchids are always associated with several entomophagous species of hymenoptera. Four entomophagous species were listed : an egg parasitoid (U lariophaga Stephan), and three solitary larval and pupal ectoparasitoids (D. Basalis Rondoni, Pteromalidae; E. vuilleti Crawford and E. orientalis Crawford, Eupelmidae). The survey of the populations shows that at the beginning of storage, E orientalis is the most abundant specie (72 %) whereas E. vuilleti and D. Basalis respectively represent 12 % and 16 % of the hymenoptera. During storage, the E orientalis population decreases gradually and it disappears completely in less than two months after the beginning of storage. E. Vuilleti population becomes gradually more important than D. basalis population which regress until less than 10 % of the emerging parasitoids. E vuilleti adopts ovicide and larvicide behaviour against D. Basalis. This behaviour explains its population regression inside granaries. If the aggressive behaviour of this Eupelmidae is a constant, that could also explain the disappearance of E orientalis. However if this species is maintained in stocks, it would be an effective control agent of bruchids according to their parasitic capacities. This study shows that ovicide and larvicide behaviour of E vuilleti is not expressed against E orientalis. When the females have exclusively the hosts already parasitized by E orientalis, they do not lay eggs. The disappearance of E orientalis could not thus be explained by the presence of E. vuilleti.

The phylogeny of the Carabinae (genera Cychrus, Pamborus, Ceroglossus, Calosoma, Carabus) is still not well resolved in its deepest nodes, despite several attempts in recent years. This group appeared during the Palaeogene, but phylogenetic analyses are difficult, which is correlated to the topology of the conflicting trees obtained, with long terminal and short internal branches. To circumvent this classical problem, we studied a non-coding and rather conservative nuclear marker (18SrRNA), then we focussed on its most variable regions, looking for some ‘molecular signatures’ originating from deep inter-nodes. For this, we compared the secondary structure of the helices H23-3 and H43. We found that the genus Carabus is monophyletic, the clade Calosoma being its sister group. Within Carabus, the Arcifera is the sister group of a diversified clade, named Eucarabi, grouping the Spinulati, the Crenolimbi and the Heterocarabi. Unexpectedly, the Heterocarabi is a very homogenous clade considering 18SrRNA, despite a high morphological diversity. The close phylogenetic relationship between Spinulati and Crenolimbi is emphasised. A clade grouping the genera Pamborus and Ceroglossus is a probable hypothesis but is not yet robustly demonstrated.

The revision of the genus Nemocephalus Gurin-Mneville 1827 is carried out. The genus is studied on the base of morphological characters. After being redefined, it is considered not to belong to the tribe Acratini and is therefore transferred, maybe provisionally, to Trachelizini since the analysis of adult characters shows similarity with the neotropical genus Paratrachelizus Kleine 1921. The synonymy with Exopleura Kleine 1922 is confirmed. All the species are redescribed and their area of distribution is revised as many misidentifications occurred in previous studies. Two species are described as new: Nemocephalus ayitiensis n. sp. from the island of Hispaniola, and N. nyabinghi n. sp. from Jamaica. Two species previously included in the genus Paratrachelizus are transferred to Nemocephalus, leading to the following new combinations: Nemocephalus linearis (Suffrian 1870), n. comb., and N. uncimanus (Boheman 1840), n. comb. The following new synonymies are proposed: Nemocephalus avarus (Kleine 1927), n. syn. for Nemocephalus monilis (Fabricius 1787); Paratrachelizus tenuis (Suffrian 1870), n. syn. for Nemocephalus uncimanus (Boheman 1840); Nemocephalus moderatus (Kleine 1922), n. syn. for Nemocephalus uncimanus (Boheman 1840). Finally, Nemocephalus gounellei Kleine 1944 is removed from this genus and transferred to Nemobrenthus Sharp 1895 in Acratini, leading to the following new combination: Nemobrenthus gounellei (Kleine 1944), n. comb. The areas of distribution of the different species are precised or corrected; the genus Nemocephalus is not present in Central or South America, and includes the following species: N. ayitiensis n. sp. in Hispaniola, N. enodis in Bahamas, Cuba and Florida, N. linearis in Cuba, N. monilis In Porto Rico, Virgin Islands, Saint-Martin and Saint-Barthlemy, N. nyabinghi n. sp. in Jamaica, and N. uncimanus in Cuba and Hispaniola. A phylogenetic analysis based on morphological characters and using cladistics methods is performed. The genus Nemocephalus seems to have its origin in the oldest islands of the Greater Antilles (Cuba and Hispaniola) after separation from the rest of the American continent; later (not before 12-20 Mya), colonization of Jamaica and Puerto Rico/Virgin Islands led to speciation events on these territories; finally, the colonization of Florida and Bahamas from Cuban migrants is probably very recent (maybe during last Ice Age, 12000 years ago).

Ranaivodes, new subgenus of Ceraclea, is described from Madagascar. It is closely related to the South Saharan endemic subgenus Pseudoleptocerus Ulmer. Ranaivodes is characterized by the presence of the harpago and the absence of the phallic parameres. Pseudoleptocerus is characterized by the presence of scales on the wings and two pairs of parameres at the phallic apparatus. Four new species are described: Ceraclea (Ranaivodes) sartorii n. sp., Ceraclea (Ranaivodes) higleri n. sp., Ceraclea (Ranaivodes) ifarantsae n. sp. and Ceraclea (Ranaivodes) jonathani n. sp. Homilia grandis Mosely, described from Madagascar, is transferred from the genus Homilia to the genus Ceraclea and to the subgenus Ranaivodes comb. nov. This new subgenus is endemic of the Island and includes all the known Malagasy species of Ceraclea. The geographic distributions of the species are studied and analyzed according to ecological parameters.

The studies on fruit flies have been neglected in the Amazon region. Only 16 species (Zucchi, 1988) have been reported for the Brazilian Amazon, and only one record is known for the Peruvian Amazon (Saravia & Freidberg, 1988). However, about 150 species have been registered for the Neotropical region (Maddison & Bartlett, 1989). This paper deals with Anastrepha species collected in five localities of the Brazilian and Peruvian Amazon regions. The species cited herein were obtained from larvae in fruits of nine species of host plants (five families).

À la suite de captures de larves effectuées dans les Monts Bamboutos (Ouest du Cameroun) et de leurs mises en élevage, les auteurs décrivent le mâle, la nymphe et la larve d’Anopheles deemingi Service, 1970 dont seule une femelle était connue. Ils décrivent aussi la nymphe et la femelle d’une nouvelle espèce: Anopheles eouzani n. sp. qui a été capturée dans ces mêmes Monts Bamboutos mais à une altitude supérieure à 2 000 m. Abstract Afrotropical anophelines. V – Description of the male and the immature stages of Anopheles deemingi Service and description of An. eouzani n. sp. (Diptera: Culicidae) Following the collection, made in the Bamboutos Mountains (West Cameroun), of larvae reared in the laboratory, the authors describe the male, nymph and larva of Anopheles deemingi Service, 1970 of which only one female was hitherto known. They also describe the nymph and female of a new species, Anopheles eouzani n. sp., collected in the same mountains but at an altitude higher than 2000 m.

La synonymie entre Perrindema Lacroix 1997, et Zanitanus Lacroix 2001, est proposée. Le genre Perrindema est révisé. Une nouvelle combinaison est établie pour Cephaloncheres lindiensis Moser 1919. Deux nouvelles espèces sont décrites du Mozambique : Perrindema quiterajoensis n. sp. et P. pembaensis n. sp. Un historique du genre est donné ainsi qu’une clé de détermination. La position systématique de ce genre au sein des Pachydemini Burmeister 1855, est discutée. La conservation de l’utilisation du nom Pachydeminae au détriment de Tanyproctinae Erichson 1847, est argumentée.

This study concerns the species list of Hymenoptera Apoidea Andrenidae belonging to Andrena genus collected during years 2002, 2005, 2006, 2007, 2008 and 2009 in the north-eastern Algeria. A total of 58 species from 27 subgenera are reported including a species described in 2011, Andrena (Parandrenella) tebessana Scheuchl, Benarfa & Louadi. Two species are new for the Algerian fauna: A. (Orandrena) monilia Warncke 1967 and A. (Suandrena) cyanomicans Pérez 1895. A. (Margandrena) quinquepalpa Warncke 1980 has been only very recently cited from Algeria from the material described here. The present study also includes the Algerian distribution of each species, flight periods and flower choices.

An annotated checklist of bees (Hymenoptera: Apoidea: Anthophila) is compiled for Guadeloupe, an island located in the Lesser Antilles of the eastern Caribbean. The list has seventeen species, including three exotic species to the Caribbean, two apparently endemic of Guadeloupe, six species only known from the Caribbean and five species that occur both on the mainland and the Caribbean. The list is created using data from literature and from our own field researches, carried out between 2011 and 2013. A list of visited flowers, along with ecological notes for each species is also given.

Species of the genus Leptopilina are larval parasitoids of Drosophilidae, mainly species of the genus Drosophila. We provide four lines of evidence (i.e. morphological descriptions, crossing experiments, ITS2 sequences and RFLP's) to show that at least six species of Leptopilina occur in Africa, of which three previously unidentified species are described here. The phylogenetic position of these three new African species (L. orientalis n. sp., L. freyae n. sp. and L. guineaensis n. sp.) is established in relation to the species already known (L. heterotoma Thomson, 1862, L. victoriae Nordlander, 1980 and L. boulardi Barbotin et al., 1979) from Africa. This relationship is based on a comparison of sequences of the ITS2 of the ribosomal DNA. The geographical distributions over the Afrotropical region of these Leptopilina species are illustrated.

Deux nouvelles espèces de #Conotrachelus$ du Pérou sont décrites. Les habitus et les genitalia des mâles des deux espèces sont figurés. Des notes sur leur biologie et des informations sur la bionomie de leurs plantes-hôtes cultivées (araza, #Eugenia stipitata$ et camu-camu, #Myrciaria dubia$) sont données. #Conotrachelus deletangi$ Hustache est considéré comme synonyme plus récent de #Conotrachelus umbrinus$ Fiedler (syn. nov.). (Résumé d'auteur)

Les deux espèces de #Lincus$ ont été étudiées sur différentes espèces de palmiers natifs en Amazonie péruvienne. Le nombre d'individus est beaucoup plus élevé sur les palmiers fertiles que sur les palmiers stériles. Les adultes sont plus nombreux que les larves sur #Astrocaryum$ spp. Sur #Elaeis oleifera$ les larves sont, au contraire, plus abondantes. Sur #Astrocaryum$, les adultes sont regroupés dans les gaines des feuilles, tandis que les larves se trouvent le plus souvent dans les structures reproductives. Sur #E. oleifera$ adultes et larves se trouvent ensemble dans ces dernières structures. Dans tous les cas les oeufs n'ont été trouvés que sur les palmiers fertiles. La sex ratio est très différente d'une espèce à l'autre. Les différences dans la distribution spatiale des #Lincus$ peuvent être attribuées à l'anatomie des palmiers. (Résumé d'auteur)

We describe the new genus Elektrothopomyia n. gen., with two new species E. saltensis n. sp. and E. tzotzili n. sp. as second and third fossil Pachygastrinae from the Mexican amber. These fossils from the Totolapa amber deposit confirm the presence of this group in Central America during the late Oligocene to middle Miocene period. Their exact affinities remain uncertain because of the current problems in the phylogenetic classification of these flies. These fossils are new elements of comparison between the entomofaunas of the Dominican and Mexican amber.

Cette étude compare la composition de l'entomocénose de la cochenille du manioc (#Phenacoccus manihoti$) au Congo en 1987, à celle de 1980 cinq ans après l'introduction du parasitoïde sud-américain, #Epidinnocarsis lopezi$ (#Hym. Encyrtidae$). Par rapport à 1980, le nombre de prédateurs est passé de 8 à 21 espèces dont 11 signalées pour la première fois. Le complexe parasitaire est constitué de deux parasites primaires (#E. lopezi$ et #Anagyrus$ sp.) et de 7 parasites secondaires dont 5 mentionnés après l'introduction de #E. lopezi$. Ce dernier semble avoir provoqué le déplacement et la raréfaction du seul parasitoïde primaire local, #Anagyrus$ sp. Nos observations sont comparées à celles faites au Gabon, de 1981 à 1984, où une étude analogue a été menée en l'absence de toute introduction de l'auxiliaire exotique #E. lopezi$. (Résumé d'auteur)

Le coléoptère #Attelabidae Euscelus spriniger$ Voss est cité pour la première fois comme nuisible au goyavier (#Psidium guajava$). Les observations ont été réalisées dans la région d'Iquitos, en Amazoniepéruvienne. (Résumé d'auteur)

The conservation of beetles that depend on dying or dead wood (i.e. saproxylic), has received a great deal of attention in many parts of the world in recent years. Human activities such as urbanization and logging, and their results, e.g. global warming, destroy natural ecosystems and threaten unusual species such as Lucanus cervus (L. 1758), Rosalia alpina (L. 1758), Limoniscus violaceus (Müller 1821) and Osmoderma eremita (Scopoli 1763). Attempts have been made to conserve the habitats upon which these species depend. Although represented by a large number of species, saproxylic beetles in Turkey have not received much attention. Although some Turkish studies have acknowledged their value, comprehensive investigations of these species are very limited. The aim of this study is to make a list, from the literature, of the species that are endangered in Europe and found in Turkey, to highlight the importance of these species. The research includes 151 saproxylic beetle species belonging to the families Bostrichidae, Cerambycidae, Elateridae, Eucnemidae, Scarabaeidae, Euchiridae, Lucanidae and Mycetophagidae. The list of Turkish saproxylic beetles was prepared using the European Red List of Saproxylic Beetles. Information is provided about the IUCN Red List category in Europe, the locations of the species in Turkey, and their global geographic range. We gathered all data about these species from the international literature. Furthermore, we also include in the list certain species whose locations are not specified, but which inhabit Turkey. We obtained their records from some catalogs in Turkey. In addition to the list, we prepared three distribution maps for Turkey. The maps show distribution in Turkey of some species in the Endangered, Vulnerable and Near Threatened categories in the European Red List. It is expected that this study will lead to comprehensive studies on saproxylic beetles from Turkey.

#Tuthillia cognata$ est découvert comme ravageur de #Myrciaria dubia$ (#Myrtaceae$) au Pérou et Brésil. Tenant compte de la morphologie de la larve, le genre est transféré des #Ciriacreminae$ dans les #Anomoneurinae$. (Résumé d'auteur)

Au cours de huit années de surveillance des milieux aquatiques, dans le cadre du Programme de lutte contre l'Onchocercose en Afrique de l'Ouest, quatorze espèces appartenant au genre #Leptocerus$ ont été capturées. Les piégeages ont eu lieu en Côte-d'Ivoire, au Togo, au Mali, en Guinée, au Burkina Faso et au Cameroun dans des milieux et des cours d'eau variés. La morphologie des genitalia de dix espèces est étudiée en détail de façon à en permettre l'identification. Six espèces sont nouvelles et décrites pour la première fois (#Leptocerus coulibalyi$, n. sp., #sechani$, n. sp., #telimelensis$, n. sp., #lauzannei$, n. sp., #stephanei$, n. sp., et #taianae$, n. sp.). Les données sur la répartition géographique et les conditions écologiques dans lesquelles les diverses espèces se rencontrent sont exposées et brièvement analysées. (Résumé d'auteur)

The type specimens of Sagrinae housed in the collections of the Muséum national d’Histoire naturelle (Paris) are cataloged. All specimens present in the collection are listed with verbatim label data and discussed. The collection consists of 27 holotypes, one allotype, one paratype and 32 syntypes of 49 species. Results are summarized as follows. (1) Holotypes: Prionesthis funerarius Lacordaire 1845, Rhagiosoma obscurithorax Pic 1914, Sagra angolensis Pic 1939, S. bontempsii Fairmaire 1897, S. brevior Pic 1953, S. cribrosa Pic 1938, S. descarpentriesi David 1953, S. favareli Pic 1938, S. favareli var. crampeli Pic 1938, S. impressipennis Pic 1953, S. jansoni var. favrei Pic 1953, S. longefemoralis Pic 1938, S. luctuosa Fairmaire 1887, S. minor Pic 1939, S. minuta Pic 1930, S. minuta var. insuturalis Pic 1953, S. pici David 1953, S. habasi David 1953, S. jeanneli David 1953 (also with allotype and one paratype), S. longeciliata Pic 1938, S. longithorax Pic 1938, S. murrayi var. benitensis Pic 1938, S. nitidissima Pic 1953, S. saphirina David 1954, S. signoreti Thomson 1858, S. subalutacea Pic 1953, S. villiersi David 1954. (2) Syntypes: Atalasis sagroides var. atricollis Pic 1934, A. sagroides var. bijuncta Pic 1934, A. sagroides var. postinnotata Pic 1948, A. sagroides var. postobliterata Pic 1948, A. sagroides var. ruficollis Pic 1934, Rhagiosoma fraternum Duvivier 1891 (3 ST), R. transactor Fairmaire 1903, Sagra deyrollei Thomson 1858, S. diversepunctata Pic 1938 (2 ST), S. donckieri Fairmaire 1903 (2 ST), S. longior Pic 1953 (2 ST), S. muelleriana Quedenfeldt 1888 (2 ST), S. nitida Pic 1938, S. nitida var. brevespinosa Pic 1938 (2 ST), S. nitidiventris Fairmaire 1891, S. oberthueri Duvivier 1891, S. perrieri Fairmaire 1898, S. petelii var. cyanescens Pic 1953 (2 ST), S. purpurea var. atricolor Pic 1953, S. purpurea var. jeanvoinei Pic 1953 (2 ST), S. suturalis Pic 1953 (2 ST), S. tibialis Fairmaire 1891. (3) Species labeled as types and proved to be manuscript names: Sagra cyanea Pic, S. cyaneoviolacea Pic, S. fulgida Weber var a Pic, and S. seguyi David. Two additional species were present under a name that was never published but actually belong to type series of described species: Sagra cyanea Pic is most likely the other syntype of S. petelii var. cyanescens Pic 1953; Sagra latipennis Pic is certainly a syntype of S. diversepunctata Pic 1938. (4) One specimen of Sagra cogoana Clavareau 1916 has been compared to the type. (5) Synonymy and new combinations. The genus Prionesthis Lacordaire 1845 is resurrected from synonymy with Megamerus MacLeay 1827 and the following new synonymy is proposed: Prionesthis Lacordaire 1845 = Rhagiosoma Chapuis 1878, syn. nov. Accordingly the following species are transferred to the genus Prionesthis: P. chapuisi (Sekerka 2007), comb. nov., P. fraternum (Duvivier 1891), comb. nov., P. grossus (Reineck 1913), comb. nov., P. madagascariensis (Chapuis 1878), comb. nov., P. obscurithorax (Pic 1914), comb. nov., P. transactor (Fairmaire 1903), comb. nov. The following new synonymies are proposed in the genus Sagra Fabricius 1792: S. bicolor Lacordaire 1845 = S. pici 1953, syn. nov.; S. congoana Clavareau 1916 = S. angolensis Pic 1939, syn. nov. = S. cribrosa Pic 1938, syn. nov.; S. ferox Baly 1877 = S. nitidiventris Fairmaire 1891, syn. nov. = S. longithorax Pic 1938, syn. nov.; S. fulgida Weber 1801 = S. minuta Pic 1930, syn. nov. = S. minuta var. insuturalis Pic 1953, syn. nov.; S. mouhoti Baly 1861 = S. suturalis Pic 1953, syn. nov.; S. odontopus Gistel 1831 = S. impressipennis Pic 1953, syn. nov. = S. petelii var. cyanescens Pic 1953, syn. nov.; S. senegalensis Klug 1835 = S. tibialis Fairmaire 1891, syn. nov.; S. tristis Fabricius 1798 = S. favareli Pic 1938, syn. nov. = S. favareli var. crampeli Pic 1938, syn. nov. = S. muelleriana Quedenfeldt 1888, syn. nov. = S. murrayi var. benitensis Pic 1938, syn. nov.; S. violacea (Olivier 1789) = S. descarpentriesi 1953, syn. nov. = S. deyrollei Thomson 1858, syn. nov. = S. habasi 1953, syn. nov. = S. jeanneli 1953, syn. nov. = S. longeciliata Pic 1938, syn. nov. = S. longefemoralis Pic 1938, syn. nov. = S. luctuosa Fairmaire 1887, syn. nov. = S. nitida Pic 1938, syn. nov. = S. nitida var. brevespinosa Pic 1938, syn. nov. = S. nitidissima Pic 1953, syn. nov. = S. saphirina David 1954, syn. nov. = S. villiersi David 1954, syn. nov.

This paper provides the first faunal checklist for the family Cicadidae (Insecta: Hemiptera) in Laos, comprising 60 species belonging to 33 genera. Aetanna pallidula n. sp. and Aetanna curta n. sp. are described as new to science. Cabecita draluobi (Boulard 2003) n. comb. and Hea yunnanensis Chou & Yao 1995 are added to the cicada fauna of Laos. Megapomponia imperatoria (Westwood 1842), which was recorded erroneously, is removed from the fauna. Unipomponia n. gen., Paranosia n. gen., Aetanna n. gen., and Cabecita n. gen. are erected. Nipponosemia Kato 1925 is synonymized with Vagitanus Distant 1918. Transfers of many species from one genus to another are made. Trengganua Moulton 1923 is transferred to Gaeanini Distant 1905 from Tosenini Amyot & Audinet-Serville 1843. Talainga Distant 1890 and Paratalainga He 1984 are transferred to Gaeanini from Talaingini Myers 1929, synonymizing Talaingini n. syn. with Gaeanini. Chloropsalta Haupt 1920 is transferred to Cicadatrini Distant 1905 from Gaeanini. Bijaurana Distant 1912 is placed in Cicadatrini.

This article describes two new species, Corticaria antonioi n. sp. and Corticaria lucasi n. sp., from the Iberian Peninsula. A key to the species of the sylvicola group is provided.Résumé. Revisión du groupe sylvicola (Coleoptera : Latridiidae), avec la description de deux espéces de Corticaria de la Péninsule Ibérique. Cet article décrit deux nouvelles espèces, Corticaria antonioi n. sp. et Corticaria lucasi n. sp. de la Péninsule Ibérique. Une clé des espèces du groupe sylvicola est présentée.

Stromatanobium delgadoi n. gen. n. sp. est décrit. Cette espèce se développe dans les stromas produits par un Champignon Ascomycète sur Plukenetia volubilis L. (Euphorbiaceae), cultivé au Pérou pour ses graines oléagineuses. La morphologie des pro-, méso- et métasternum place le nouveau genre dans la sous-famille des Ptinidae Mesocoelopodinae. Le genre et l’espèce sont bien caractérisés par la structure des antennes des deux sexes, de l’édéage et par d’autres caractères dans la morphologie externe. Stromatanobium n. gen. semble être proche de Tricorynus Waterhouse 1849, mais il s’en distingue par les caractères mentionnés ci-dessus.

Les stades pré-imaginaux (oeuf, larve, nymphe) des deux foreurs inféodés à l'épi de maïs en Côte d'Ivoire, #Cryptophlebia leucotreta$ (Meyrick) (Tortricidae) et #Mussidia nigrivenella$ Ragonot (#Pyralidae$) sont décrits. La chétotaxie du dernier stade larvaire de ces espèces est détaillée ainsi que celle des foreurs de tige #Eldana saccharina$ Walker (#Pyralidae$), #Busseola fusca$ (Fuller) et #Sesbania calamistis$ (#Noctuidae$). Des critères de distinction des espèces sont donnés. (Résumé d'auteur)

The community structure, dynamics and succession patterns of the sarcosaprophagous Formicidae (Insecta, Hymenoptera) at the end of spring and summer, 2004, have been determined following a study carried out in Coimbra (Central Portugal) using piglet carcasses. A modified Schoenly trap was used to collect the fauna. Five decomposition stages were observed and 1061 ant workers, corresponding to six species, were collected and identified. The dominant species was Linepithema humile (Mayr 1868), for which its distribution throughout the decomposition process is shown. Comparisons are made with data from literature at two other localities in Spain. The information presented in this study represents the first report on the sarcosaprophagous Formicidae community that is present in Portugal. These data will contribute to enlarging our knowledge on the biology of this fauna, will provide interesting references for some species, and will be very useful for establishing a database that is critical in forensic practice.

Among host plants of Lixinae weevils, plant life-form ratio (sensu Raunkiaer) is similar to the plant spectrum of Mediterranean deserts. A possible explanation is that this group of insects formed in desert zones and settled in the steppe rather later. For the first time Raunkiaer’s life-form ratio is compared with a spectrum of food plants of herbivores. This approach may be useful for reconstruction of the genesis of taxa and communities.Résumé. Parmi les plantes-hôtes des charançons Lixinae, le “plant life-form ratio” (sensu Raunkiaer) est similaire au spectre de plantes des déserts méditerranéens. Une explication posible serait que ce groupe d’insectes se serait constitué dans les zones désertiques et serait établis dans les steppes par après. Pour la première fois, le “life-form ratio” de Raunkiaer est comparé avec une spectre de plantes alimentaires d’herbivores. Une telle approche pourrait être utile pour la reconstruction de l’origine des taxons et des communautés.