ABSTRACT The eight species of Bondarius Rosado-Neto, 2006 are distributed in South, Central and North America, and the Caribbean: B. tuberculatus (Boheman, 1836), B. subrufus (Fiedler, 1936), B. breyeri (Brèthes, 1910), B. fuscoaeneus (Boheman, 1843), B. sublaevicollis (Hustache, 1939), B. nitidus (Champion, 1902), B. spinipes (Champion, 1902) and B. pectoralis (Suffrian, 1872). This study presents a taxonomic review of the genus and redescription of the known species, provides illustrations of the external morphology, mouthparts and genitalia of males and females, and an identification key to species. RosadoNeto, RosadoNeto Rosado Neto, Neto Rosado-Neto 200 South America Caribbean B Boheman, Boheman (Boheman 1836, 1836 , 1836) Fiedler, Fiedler (Fiedler 1936, 1936 1936) Brèthes, Brèthes (Brèthes 1910, 1910 1910) 1843, 1843 1843) Hustache, Hustache (Hustache 1939, 1939 1939) Champion, Champion (Champion 1902, 1902 Suffrian, Suffrian (Suffrian 1872. 1872 . 1872) morphology females 20 183 193 191 184 190 187 2 18 19 1

Resumo: O efeito do ciclo hidrológico sobre a abundância de adultos e larvas dos curculionídeos Cyrtobagous salviniae e Cyrtobagous singularis do Pantanal foi testado e relacionado com a abundância das plantas hospedeiras, variáveis limnológicas e conectividade hidrológica de 10 baías do rio Cuiabá. Os adultos e larvas de C. salviniae foram mais abundantes do que C. singularis, e a abundância de larvas e adultos diferiu significativamente intra e interespecificamente. Adultos e larvas de ambas espécies foram mais abundantes em baías conectadas, mas apenas C. salviniae respondeu ao ciclo hidrológico, com a maior abundância de adultos durante o período de cheia, e maior abundância de larvas na enchente. A abundância de C. singularis foi relacionada negativamente com a predominância de C. salviniae, e a abundância de adultos e larvas de ambas espécies foi fraca e negativamente relacionada com as variáveis limnológicas e abundância das plantas hospedeiras. Os resultados demonstraram que a variação temporal na abundância de larvas e adultos e a dominância de C. salviniae foram influenciadas pela conectividade e ciclo hidrológico, mas não pelas variáveis limnológicas e abundância das macrófitas aquáticas.

Abstract: The effect of the hydrological cycle on the abundance of adults and larvae of the weevils Cyrtobagous salviniae and Cyrtobagous singularis in the Pantanal was tested and related to the host-plant abundance, limnological variables, and hydrological connectivity of 10 “bays” (lakes and ponds) along the Cuiabá River. Adults and larvae of C. salviniae were more abundant than C. singularis, and larvae and adult abundance differed significantly both within and between the two species. Adults and larvae of both species were more abundant in connected bays, but only C. salviniae responded to both connectivity and hydrological cycle, with the highest abundances during the high-water and rising-water periods for adults and larvae, respectively. Abundance of C. singularis was negatively related to the predominance of C. salviniae, and populations of adults and larvae of both species were slightly and negatively related to the limnological variables and host-plant abundance. The results showed that the temporal variation in larval and adult abundance and dominance of C. salviniae is influenced by hydrological cycle and connectivity, but not by limnological variables and host-plant abundance.

Aspectos morfológicos da genitália masculina e feminina e seus escleritos associados, tergito e esternito abdominal 8, de sete espécies de Heilus Kuschel 1955 da tribo e subtribo Hylobiini-Hylobiina, são descritos, ilustrados e discutidos. As sete espécies são H. faldermanni (Boheman, 1836); H. fasciculatus (Boheman, 1843); H. freyreissi (Boheman, 1836); H. myops (Boheman, 1836); H. pupillatus (Olivier, 1790); H. rufescens (Boheman, 1836) e H. tuberculosus (Perty, 1832).

Morphological aspects of the male and female genitalia and their associated sclerites, abdominal tergite and sternite 8, are described, illustrated and discussed for seven species of Heilus Kuschel 1955 of tribe and subtribe Hylobiini-Hylobiina. The seven species are H. faldermanni (Boheman, 1836); H. fasciculatus (Boheman, 1843); H. freyreissi (Boheman, 1836); H. myops (Boheman, 1836); H. pupillatus (Olivier, 1790); H. rufescens (Boheman, 1836) and H. tuberculosus (Perty, 1832).

O aparelho estridulatório do tipo élitro-tergal que ocorre em Bondarius Rosado-Neto, 2006 um gênero da tribo Sternechini (Curculionidae, Molytinae) é descrito e ilustrado. O aparelho estridulatório presente em machos e fêmeas é composto pelo file, uma carena multiestriada, estreita e elevada, localizada transversalmente no terço apical do élitro esquerdo, na margem interna, próximo a sutura elitral, e pelo plectrum, uma área estreita e estriada localizada transversalmente na margem dorso-apical do tergito abdominal 7.

The elytro-tergal stridulatory organ that occurs in Bondarius Rosado-Neto, 2006 a genus of the tribe Sternechini (Curculionidae, Molytinae) is described and illustrated. The stridulatory apparatus is present both in male and female and is composed by the file, a narrow elevated carina which is transversely multistriate located at the apical third of the internal side near the suture of left elytron, and by the plectrum, a narrow striate area located transversely at the dorso-apical margin of the abdominal tergite 7.

Artrópodes terrestres associados a copas de árvores no Pantanal de Mato Grosso, Brasil. Este estudo representa uma contribuição ao conhecimento da diversidade de artrópodes associados à copa de Vochysia divergens Pohl (Vochysiaceae). Três indivíduos foram amostrados durante dois períodos sazonais, um durante a cheia (árvore A: fevereiro) utilizando-se o método de pulverização com inseticida e dois durante a seca (árvore B: setembro, C: outubro), empregando-se a termonebulização. Um total de 15744 artrópodes (183,2±38,9 individuos/m²) foram obtidos em 86m² de área representando 20 ordens taxonômicas, 87,1% Insecta e 12,9% Arachnida. O grupo dominante foi Hymenoptera (48,5%; 88,9 individuos/m²), a maioria Formicidae (44,5%; 81,4 individuos/m²), seguido por Coleoptera (14,0%; 25,5 individuos/m²) e Araneae (10,2%; 19,5 individuos/m²), que representaram 62,5% do total coletado. Com relação a freqüência, 14 de todas as ordens (70%) ocorreram nas tres árvores. Dermaptera, Isoptera, Neuroptera, Odonata, Plecoptera e Trichoptera foram coletadas em uma única árvore. Foram obtidos 2197 Coleoptera adultos (25,5±11,3 indivíduos/m²), sendo 99% assinalados para 32 famílias e 256 morfoespécies. Nitidulidae (17,9%; 4,6 indivíduos/m²), Anobiidae (16,7%; 4,3 indivíduos/m²), Curculionidae (13,2%; 3,4 indivíduos/m²) e Meloidae (11,4%; 2,9 indivíduos/m²) foram dominantes. Os Coleoptera adultos associados à copa de V. divergens indicam dominancia de herbívoros (37,8% do total coletado, 127 spp.) e predadores (35,2%, 82 spp.), seguidos por saprófagos (16,2%, 32 spp.) e fungívoros (10,8%, 15 spp.). A influência do pulso de inundação sobre a comunidade de artrópodes arbóreos associados à V. divergens é indicada pela variação sazonal nos grupos avaliados, gerando mudanças em sua estrutura e composição ao longo dos períodos sazonais.

Terrestrial arthropods from tree canopies in the Pantanal of Mato Grosso, Brazil. This study represents a contribution to the knowledge of the diversity of arthropods associated to the canopy of Vochysia divergens Pohl (Vochysiaceae). Three trees individuals were sampled during two seasonal periods in this region: a) by spraying one tree canopy during high water (February); b) by fogging two tree canopies during low water (September/October). The 15,744 arthropods (183.2±38.9 individuals/m²) obtained from all three trees (86 m²) represented 20 taxonomic orders, 87.1% were Insecta, and 12.9% Arachnida. The dominant groups were Hymenoptera (48.5%; 88.9 individuals/m²), mostly Formicidae (44.5%; 81.4 individuals/m²), followed by Coleoptera (14.0%; 25.5 individuals/m²) and Araneae (10.2%; 19.5 individuals/m²), together representing 62.5% of the total catch. Fourteen (70%) of all orders occurred on three trees. Dermaptera, Isoptera, Neuroptera, Odonata, Plecoptera and Trichoptera were collected from only one tree. Of the total, 2,197 adult Coleoptera collected (25.5±11.3 individuals/m²), 99% were assigned to 32 families and 256 morphospecies. Nitidulidae (17.9% of the total catch; 4.6 individuals/m²), Anobiidae (16.7%; 4.3 individuals/m²), Curculionidae (13.2%; 3.4 individuals/m²) and Meloidae (11.4%; 2.9 individuals/m²) dominated. The communitiy of adult Coleoptera on V. divergens indicated a dominance of herbivores (37.8% of the total catch, 127 spp.) and predators (35.2%, 82 spp.), followed by saprophages (16.2%, 32 spp.) and fungivores (10.8%, 15 spp.). The influence of the flood pulse on the community of arboreal arthropods in V. divergens is indicated by the seasonal variation in evaluated groups, causing changes in their structure and composition.

Six individuals of the palm A. phalerata, in Poconé floodplains of Mato Grosso, were sprayed with a synthetic pyrethroid (0.25% concentration) in order to study the biomass, diversity, and richness of the canopy arthropods. A total of 17,188 (238.7±80.6 ind./m²) arthropods belonging to 22 Orders, was collected in a 72 m² funnel area. Two hours after spraying, 58.9% of the total number fell into the funnels, 37.6% was obtained by shaking the trees, and finally, 3.5% after cutting and washing all the palm leaves. The Coleoptera (27.4%), Hymenoptera-Formicidae (19.0%), Collembola (13.6%), Psocoptera (10.7%), Diptera (9.0%) and Araneae (6.4%) were the predominant. The total biomass was 15.1 g dry weight (0.4mg/m²; 0.13+0.04/tree). A total of 4,715 beetles representing 48 families and 326 morphospecies were obtained. Tenebrionidae (22.9%), Curculionidae (22.0%), Carabidae (10.9%) and Staphylinidae (7.9%) were the most abundant, while Curculionidae (44 spp.), Staphylinidae (40 spp.) and Chrysomelidae (34 spp.) presented the largest number of morphospecies. Herbivores (37.5%) were the dominant in the trophic guilds of adult Coleoptera, followed by predators (35.4%), fungivores (14.6%), and saprophages (12.5%). Although most arthropod Orders were represented in all the palms sampled, analysis of variance showed no significant differences in their composition, however there was a significant difference in their frequency of occurrence.