The genus Ambrysus Stål is the most species rich of Naucoridae. Multiple groups in have been proposed, including North American signoreti complex. Four new belonging to A. complex are described and illustrated: three from Mexico (Ambrysus brailovskyi Reynoso & Sites n. sp., henryi schuhi sp.) one Guatemala (A. sitesi sp.), bringing total number 97.

The Neotropical saucer bug species Ambrysus maldonadus La Rivers and montandoni originally were placed in Stål despite aberrant physiognomies features inconsistent with the genus. These two are herein transferred from to Carvalhoiella De Carlo new combinations. Further, (Picrops) usingeri represents a monotypic subgenus, which is elevated full generic status. As such, Picrops status for this second of Guiana Shield described. In addition, male brunneus Sites described comparison character...

The Ambrysus pulchellus Montandon species complex is revised and includes A. buenoi Usinger, californicus Montandon, vanduzeei Usinger. unifying features among in this are related to the morphology of male phallosoma medial lobes abdominal tergum VIII. diagnosed a key for identification presented. subspecies nitidulus pallidulus proposed as junior synonyms Montandon. newly recorded from Honduras, Nicaragua, Panama Central America. This has widest distribution subgenus Stål parts Nearctic...

The New World genus Limnocoris Stål includes 73 described species, of which 13 are distributed in North America. A new rodriguesi Reynoso n. sp., from Mexico is and illustrated, bringing the total number species country to eight. An updated checklist Mexican fauna presented state records for six species: hintoni La Rivers, L. inornatus Montandon, insularis Champion, lutzi pygmaeus signoreti Montandon. Additionally, distribution maps each presented.

Two new species of Macrodactylus Dejean (Coleoptera: Scarabaeidae: Melolonthinae: Macrodactylini) from Mexico and Guatemala are described illustrated: miguelangeli Guatemala, M. oaxacaensis Mexico. With the descriptions these two species, total number genus reaches 124. The characteristics closely related briefly discussed.

The aquatic bug family Naucoridae currently is organized by a morphology‐based taxonomy and has never been analysed from phylogenetic perspective. Thus, we sequenced two nuclear mitochondrial genes in order to reconstruct relationships among the genera subfamily Cryphocricinae, using maximum likelihood Bayesian inference approaches. In total, 101 species were included analyses (ingroup: 85 of Cryphocricinae). results support polyphyletic Cryphocricinae as conceived. offer revised concept...

The Neotropical Ambrysus stali La Rivers species complex is reviewed and includes A. bifidus & Nieser, scolius Rivers, tricuspis Rivers. oblongulus Montandon removed as a member of this complex. Features uniting these are related to male genitalia associated structures. maya n. sp. the fifth in described from Belize, Guatemala, Mexico based on specimens recent collecting museum collections.

Adult specimens of the Mexican Mantispidae were recorded from Colección Nacional de Insectos, Universidad Autónoma México, and Entomológica del Centro Estudios en Zoología, Guadalajara, as well literature. Specimens examined (n = 270) represented three subfamilies, 11 species nine genera, five morphospecies. Our studies reveal 23 Mexico. Distribution records are presented by country province, locality. Six new state records. An illustrated key to genera is provided, a list pertinent...

The genus Cataractocoris includes large waterfall-inhabiting insects that occur from Mexico to El Salvador and has received very little attention in the literature. Based on extensive field work during past three years, we have collected saucer bugs (Heteroptera: Naucoridae) many localities central southern Mexico. We here present detailed distributions diagnostic information of two described species description a third occurs Nayarit state south Guatemala. An illustrated taxonomic key...

The Ambrysus hybridus Montandon species complex is revised and includes A. convexus Usinger, fuscus Usinger stat. rev., Montandon, lattini La Rivers, plautus Polhemus & Polhemus, spiculus thermarum ultimus Rivers. lariversi n. sp. the ninth in this described from Mexico. tridentatus Rivers woodburyi are proposed as junior synonyms of for which a lectotype designated. Most occur only Mexico, although known United States occurs southwestern to southern Mexico has widest distribution any...

The Ambrysus pudicus Stål species complex is revised, its diagnosed, and an illustrated key presented. includes A. abortus La Rivers, amargosus funebris hungerfordi Usinger, parviceps Montandon, Stål, relictus Polhemus & Polhemus. A new species, chinanteco, belonging to this described from southern Mexico. subspecies angularis h. spicatus triunfo Rivers are herein elevated full level considered members of complex. barberi Usinger synonymized with the nominate subspecies. Based on...

The Ambrysus guttatipennis Stål species complex is revised and includes A. arizonus La Rivers, bispinus drakei Stål, mexicanus Montandon, mormon Montandon. Six new that belong to this are described from Mexico: ayoyolin n. sp., bowlesi contrerasi itsipatsari noveloi veracruzanus sp. subspecies australis m. heidemanni minor Rivers proposed as junior synonyms of A supplemental redescription based on the holotype provided a lectotype Montandon designated. newly recorded Mexico Guatemala. Most...

The subgenus Ambrysus (Syncollus) La Rivers is mostly Neotropical and includes nine described species. Features uniting species in this are related to the position of propleura with respect prosternum males females, as well characteristics tergum V genitalia males. Three Syncollus known from Mexico including baeus Polhemus & Polhemus, A. circumcinctus Montandon, pygmaeus Rivers. remaining six distributed Central South America. Herein we review revise Mexican fauna. More specifically,...

The new species Ambrysus inecol Reynoso n. sp. from Mexico, which belongs to Section 3 of the signoreti Stål complex, is herein described and illustrated. This brings total number in genus 69, 61 belong nominal subgenus 25 A. complex. Also, country department/state records are reported for Central American dyticus La Rivers.

Adult specimens of Mantispidae were recorded from the insect collections at UNAM's (Universidad Nacional Autónoma de México) Chamela and Los Tuxtlas biological stations, in Jalisco Veracruz states, respectively. The collection had representatives Plega dactylota Rehn, Nolima victor Navás, Climaciella brunnea (Say), Dicromantispa interrupta sayi (Banks), Zeugomantispa minuta (F.), morphospecies sp. 1 unassignable In Tuxtlas, there Leptomantispa pulchella compellens (Walker), virescens...

The species-rich Ambrysus signoreti Stål species complex is diagnosed and subdivided into three sections based on morphology of the female subgenital plate. in first section, characterized by posterior margin plate with posterolateral corners extending posteriorly further than central lobe, are revised. group includes four species: two previously described from Mexico (Ambrysus cosmius La Rivers, A. schuhi Reynoso & Sites), one Costa Rica (A. variegatus Usinger), a new species, morelosensis...

The IEXA Entomological Collection at Instituto de Ecología, A. C. (Xalapa, Veracruz, Mexico) is one of the most important scientific collections in Mexico based on its taxonomic and geographic coverage number specimens (approx. 400,000), including name-bearing types. insect orders best represented collection are Coleoptera, Diptera, Hemiptera, Hymenoptera, Odonata. present catalogue result a recent update database, which included capturing number, sex, label data types collection. This...

The mantidfly genus Nolima Navás, 1914 (Neuroptera, Mantispidae, Calomantispinae) is herein revised. endemic to the New World, ranging from southwestern United States south Costa Rica. Nolimainfensa N.pinal Rehn, and N.victor Navás are redescribed, while new species Nolimacostaricensis Reynoso & Contreras, sp. nov. described N.dine Rehn N.kantsi synonymized with N.pinal. Additionally, N.praeliator N.pugnax N.victor, for which a lectotype designated. distribution records provided Guatemala...

Of the 97 described species in New World genus Ambrysus Stål, nymphal instars of only one North American have been described. This work represents first contribution where immature a Mexican endemic are characterized and illustrated, inflatus La Rivers. The descriptions based on specimens collected Lago de Chapala, Michoacán, central Mexico. main characters to distinguish among related overall size relative length mesonotal wing pad compared with exposed part metanotal lateral margin. Some...

Adult specimens of the Mexican Mantispidae were recorded from Colección Nacional de Insectos, Universidad Autónoma México, and Entomológica del Centro Estudios en Zoología, Guadalajara, as well literature. Specimens examined (n = 270) represented three subfamilies, 11 species nine genera, five morphospecies. Our studies reveal 23 Mexico. Distribution records are presented by country province, locality. Six new state records. An illustrated key to genera is provided, a list pertinent...

The genus Ambrysus Stl is a species-rich in which multiple species groups have been proposed, including the North American signoreti complex. new Mexican altiplanus Reynoso n. sp., belongs to A. complex, described and illustrated, bringing total number of 67. Also, state records are reported for three same two endemic Mexico.