The genus Eumenes Latreille, 1802, from the New World, is revised based on external morphology and male genitalia. synonymy proposed as follows: E. aureus Isely, 1917 = americanus de Saussure, 1852; bollii oregonensis Bequaert, 1838, b. ehrenbergi Zavattari, 1912 Cresson, 1872; consobrinus pedalis Fox, 1894 1855; crucifera bolliformis Viereck, 1908, c. nearcticus 1855 stricklandi 1944 Provancher, 1888; smithii belfragei 1872 verticalis coloradensis 1875, v. neoboreus 1944, tricinctus Say,...

Three new species from the Neotropical region are described: Ancistroceroides soikai Grandinete & Carpenter, sp. nov. (Costa Rica, Paraguay); Cephalastor huautla (Mexico), and Symmorphus centralis Carpenter Grandinete, Rica).

The Neotropical thynnine genus Scotaena is revised and a cladistic analysis presented. analysis, conducted from 75 morphological characters of 31 terminal taxa, returned single tree under equal weighting. monophyly was not recovered. Three new genera five species are described: Kaysara gen. nov., Pseudoscotaena nov. Pampathynnus reversa sp. laterolata apiciconcava marginoplicata levicrenata transferred to other as follows: Eucyrtothynnus rosenbergi (Turner, 1910) comb. Glottynoides genisei...

Zethus wileyi Stange sp. nov. (Panama) is described and a cladistic analysis carried in order to determine the relationship between new species other hilarianus species-group. The assigned its own species-group due evident differences morphology.

The Zethus mexicanus group sensu Bohart & Stange (1965) consists of four species in the subgenus Zethusculus: brasiliensis de Saussure, 1852, Z. (Linnaeus, 1758) (both subdivided into three subspecies each), magnus 1852 and waldoi Zavattari, 1912. Color patterns distribution have been used to differentiate until now. However, these may vary among individuals, specimens examined this study showed overlap between subspecies. analysis external morphology did not show significant...

Abstract Neotropical swarm‐founding wasps are divided into 19 genera in the tribe Epiponini (Vespidae, Polistinae). They display extensive variation several colony‐level traits that make them an attractive model system for reconstructing evolution of social phenotypes, including caste dimorphism and nest architecture. has been upheld as a solid monophyletic group most phylogenetic analyses carried out so far, supported by molecular, morphological behavioural data. Recent molecular studies,...

Reproductive castes are compared in species of swarming wasps representing all currently recognized genera Epiponini (Polistinae). New morphometric data for nine measures body parts and ovarian presented 13 species. These integrated with similarly conducted available studies, giving a total 30 Analysis reveals several syndromes relating reproductive nonreproductive individuals: no meaningful distinction, physiological differences only, reproductives larger than nonreproductives intermediate...

Morphometric data for 30 species of swarming wasps (Vespidae: Polistinae: Epiponini) are presented, representing all currently recognized genera. Data coded according to whether females that were shown by dissection be egglayers larger, similar, or smaller each dimension than non-egglayers. These analysed in a phylogenetic framework with primitively social Polistes and Mischocyttarus as outgroups. Representative measurements illustrated show most genera Epiponini appear have ancestry lineage...

The phylogenetic relationships among the four tribes of corbiculate bees (Euglossini, Bombini, Meliponini, and Apini) are controversial. There is substantial incongruence between morphological molecular data, single origin eusociality questionable. use behavioral characters by previous workers has been restricted to some typological definitions, such as solitary eusocial. Here, I expand term “social” 42 present a tree based only on characters. reconstructed were similar those observed in...

The phylogenetic relationships among the four tribes of corbiculate bees (Euglossini, Bombini, Meliponini, and Apini) are controversial. There is substantial incongruence between morphological molecular data, single origin eusociality questionable. use behavioral characters by previous workers has been restricted to some typological definitions, such as solitary eusocial. Here, I expand term "social" 42 present a tree based only on characters. reconstructed were similar those observed in...

Abstract Morphological analyses of female wasps collected at different points in the development colonial life cycle showed that Polybia occidentalis, P. paulista and scutellaris, caste differences progressively increase because larger queens appeared more abundance later stages colony cycle. Possibly, mechanism can be selective importance onset cyclical oligogyny, which is presently well documented many swarm-founding polistine wasps. Males uninseminated females with developed ovaries...

In this work, an alternative method for the capture of neotropical social wasps is described, which may supplement or replace procedures commonly used in wasp surveys. The was tested a seasonal semideciduous forest northwest São Paulo State, collecting larger number species and greater abundance other Hymenoptera than methods also same area, namely Malaise traps, bottle traps meat baits. proposed adapted from Wille (1962) who attractive solution based on water honey bee attraction. here,...

We surveyed social wasps (Polistinae) present in forest fragments of northwest São Paulo state with different surroundings composed a matrix citrus crops and sugarcane the expectation that former would be more diverse than latter. collected specimens actively using attractive liquids. obtained 20 species Magda, 13 Bebedouro, Matão, 19 Barretos. The most common genus was Agelaia all areas. greatest Shannon-Wiener index diversity Magda (<mml:math...

Scoliidae is a commonly found cosmopolitan family and currently one of the most neglected taxa within Hymenoptera. As expected, information on members this group scarce extremely outdated, especially when it comes to their phylogenetic relationships. The genus Scolia Fabricius, 1755 includes species that do not present diagnostic characters used identify other genera Scoliini, so can be considered "dumping ground group". Seeking better understand evolutionary history and, consequently,...

Abstract Scoliidae is a family commonly found throughout the globe and, currently, one of most neglected taxa within Hymenoptera. As expected, information about this group extremely scarce, confusing, and outdated, especially when it comes to its taxonomy systematics. Therefore, here genus Aelocampsomeris Bradley, 1957 revised. This comprises three species: brethesi 1927, campestris Burmeister, 1854, variegata Fabricius, 1793. While variegata, very common well-known species, brethesi,...

Human exploitation of the forest in northwest São Paulo State has generated enormous fragmentation that forest. Such disturbance reduced populations insects general. This work was a survey social wasps (Hymenoptera, Vespidae; Polistinae) three areas different stages regeneration: de Faria - SP (435 ha), Pindorama (128 ha) and Neves Paulista (1 ha). These were chosen for comparative purposes. To capture wasps, it used: active collecting with attractant liquid (solution water, salt sugar) aid...

Abstract Most of the studies on bee fauna cerrado have shown incomplete approaches, focusing species diversity or a fraction assemblage. This work presents similarities among based visited plants and also shows taxonomic bees for plant resource sets offered by in area (Pé-de-Gigante), one few conservation areas São Paulo State, Brazil. A total 737 specimens, belonging to 71 species, were collected visiting 52 species. Species clusters show that Epicharis, example, are more similar themselves...

Foraging behavior in social wasps is important the development of colony and reflects an ecological interaction between environment. Although traits play a role foraging activities, conditions that establish space time limits are mainly physical. Here, we evaluate colonies Polybia paulista throughout one year order to verify activities items collected, as well importance temperature, relative humidity, solar radiation on motivating foraging. Collection liquids was always higher than solids;...