Revision of the Ambrysus signoreti Stål species complex (Heteroptera: Naucoridae: Ambrysinae). Section 2.

The Ambrysus signoreti Stål species complex was recently diagnosed and subdivided into three sections based on morphology of the female subgenital plate. In the present study, the species in the second section, characterized by the posterior margin of the subgenital plate with central lobe extending posteriorly further than the posterolateral corners, are revised. Supplemental descriptions for four species described by La Rivers and Usinger are provided.

A new species of Ambrysus Stål from west-central Mexico and new records for Ambrysus dyticus La Rivers in Central America (Heteroptera: Nepomorpha: Naucoridae).

The new species Ambrysus inecol Reynoso n. sp. from Mexico, which belongs to Section 3 of the Ambrysus signoreti Stål complex, is herein described and illustrated.

Revision of the Ambrysus signoreti Stål species complex (Heteroptera: Naucoridae: Ambrysinae). Section 1.

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

A new species of Ambrysus Stl from the Central Mexican Plateau and new state records for species of the genus in the country (Heteroptera: Nepomorpha: Naucoridae).

The genus Ambrysus Stl is a species-rich genus in which multiple species groups have been proposed, including the North American Ambrysus signoreti Stl complex. The new Mexican species Ambrysus altiplanus Reynoso n. sp.

Two new species of Macrodactylus (Coleoptera: Scarabaeidae: Melolonthinae: Macrodactylini) from Mexico and Guatemala.

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

A new species of Limnocoris Stål (Heteroptera: Naucoridae: Limnocorinae) and new state records for species of the genus in Mexico.

The New World genus Limnocoris Stål includes 73 described species, of which 13 are distributed in North America. A new species, Limnocoris rodriguesi Reynoso n. sp.

Descriptions of four new species of the Ambrysus signoreti Stål species complex (Heteroptera: Nepomorpha: Naucoridae.

The genus Ambrysus Stål is the most species rich genus of Naucoridae. Multiple species groups in the genus have been proposed, including the North American Ambrysus signoreti Stål complex. Four new species belonging to the A.

Taxonomic review of the mantidfly genus Navás (Neuroptera, Mantispidae, Calomantispinae).

The mantidfly genus Navás, 1914 (Neuroptera, Mantispidae, Calomantispinae) is herein revised. is endemic to the New World, ranging from the southwestern United States south to Costa Rica. Navás, Rehn, and Navás are redescribed, while the new species Reynoso & Contreras, is described from Costa Rica.

Revision of the Ambrysus pulchellus Montandon species complex (Heteroptera: Nepomorpha: Naucoridae).

The Ambrysus pulchellus Montandon species complex is revised and includes A. buenoi Usinger, A. californicus Montandon, A.

Revision of the Ambrysus pudicus Stål species complex (Heteroptera: Nepomorpha: Naucoridae) with the description of a new species from southern Mexico.

The Ambrysus pudicus Stål species complex is revised, its species diagnosed, and an illustrated key is presented. The complex includes A. abortus La Rivers, A.

Revision of the Ambrysus hybridus Montandon species complex (Heteroptera: Naucoridae: Cryphocricinae) with the description of a new species from Mexico.

The Ambrysus hybridus Montandon species complex is revised and includes A. convexus Usinger, A. fuscus Usinger stat.

Revision of the Ambrysus guttatipennis Stål species complex (Heteroptera: Naucoridae: Cryphocricinae) with the descriptions of six new species from Mexico.

The Ambrysus guttatipennis Stål species complex is revised and includes A. arizonus La Rivers, A. bispinus La Rivers, A.

The Ambrysus Stål (Heteroptera: Naucoridae: Cryphocricinae) of Mexico: Revision of the subgenus Syncollus La Rivers.

The subgenus Ambrysus (Syncollus) La Rivers is mostly Neotropical and includes nine described species. Features uniting species in this subgenus are related to the position of the propleura with respect to the prosternum in males and females, as well as characteristics of tergum V and the genitalia of males. Three species of Syncollus are known from Mexico including Ambrysus baeus Polhemus & Polhemus, A.

Review of the Ambrysus stali La Rivers species complex (Heteroptera: Nepomorpha: Naucoridae) with the description of a new species from Mesoamerica.

The Neotropical Ambrysus stali La Rivers species complex is reviewed and includes A. bifidus La Rivers & Nieser, A. scolius La Rivers, A.

Revision of the Mesoamerican genus Cataractocoris Usinger (Hemiptera: Heteroptera: Nepomorpha: Naucoridae).

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 the past three years, we have collected saucer bugs (Heteroptera: Naucoridae) from many localities in central and southern Mexico. We here present detailed distributions and diagnostic information of the two described species of Cataractocoris and the description of a third species that occurs from Nayarit state in Mexico south to Guatemala.