Two new species of Neotrichia (Hydroptilidae) from Mexico are described, Neotrichia barbai new species and Neotrichia marinoi new species. The male genitalia of both species are illustrated. Neotrichia barbai new species can be recognized by the inferior appendages with apices curved outward, posterior margin of segment IX with a narrow lateral process, and phallus with long, straight paramere and stout, hook-like sclerite. Neotrichia marinoi new species can be recognized by the deltoid shape of the bracteole in ventral view, phallus with long, straight paramere and the long, narrow, ventroanteriorly produced subgenital plate. The two new species were phylogenetically placed within the N. vibrans species group, based on the subgenital plate narrow, rod-like and with a shallow incision. A list of species in the genus Neotrichia is provided in alphabetical order, which shows their distribution in Mexico and includes seven new state records and the two new species.

This study examined the use of individual host trees by the membracid, Umbonia crassicornis (Amyot and Serville). To do this we monitored the number of U. crassicornis in six classes: solitary female, solitary male, female on an egg mass, female with small nymphs (first to third instar), female with large nymphs (fourth to fifth instar) and female with teneral adults on 45 Lysiloma latisiliquum Benth. trees in a total population of several hundred L. latisiquum trees on Key Largo, Florida, USA. The site had been colonized by U. crassicornis for at least five years prior to this study. The U. crassicornis moved extensively among the monitored trees with over 90% of trees experiencing a change of status from colonized to abandoned or the reverse. The average length of a colonized period and an abandonment period were the same at about three months or approximately one U. crassicornis life cycle. On average the treehopper population colonized a tree for a generation and then abandoned it for a generation before colonizing it again. The number of male treehoppers on a tree was significantly correlated with both the number of aggregations of teneral adults (= unmated females), and the number of solitary females on the tree. The treehopper population functioned like a metapopulation moving among individual trees. This movement allows the insect to maintain a population at a site with acceptable host plants without negatively affecting future generations, while also providing dispersing individuals to seek and colonize new host resources and provide new genetic material to other colonized populations of host plants.

A new treehopper from Guatemala, Cladonota (Lecythifera) pelaezi new species, is described, illustrated and compared with Cladonota (Lecythifera) affinis (Fowler) and Cladonota (Lecythifera) championi (Peláez). Corrections are included to two previous publications on the genus Cladonota.

Una nueva chicharrita de Guatemala, Cladonota (Lecythifera) pelaezi nueva especie, se describe, ilustra y compara con Cladonota (Lecythifera) affinis (Fowler) y Cladonota (Lecythifera) championi (Peláez). Se incluyen correcciones a dos publicaciones anteriores sobre el género Cladonota.

Novel rearing records are combined with published and online records to provide an account of the North American Lepidoptera known to include Aralia spp. (Araliaceae) among their larval hosts. Apart from the monophagous shoot borer Papaipemaaraliae Bird and Jones (Noctuidae) and two Epermenia spp. (Epermeniidae) that are Apiales specialists, the remaining Aralia feeders are polyphagous species of Apatelodidae, Crambidae, Depressariidae, Erebidae, Gelechiidae, Geometridae, Lycaenidae, Noctuidae, Tineidae, and Tortricidae. New rearing records from wild sarsaparilla (A. nudicaulis L.) are documented for Herpetogramma thestealis (Walker) (Crambidae), Machimia tentoriferella Clemens (Depressariidae), Iridopsis ephyraria (Walker) (Geometridae), Orthosia rubescens (Walker) (Noctuidae), Amorbia humerosana Clemens, and Coelostathma discopunctana Clemens (Tortricidae); of these, only H. thestealis has been reported from Araliaceae previously. Three species of flies (Diptera: Chloropidae: Tricimba trisulcata (Adams); Drosophilidae: Scaptomyza pallida (Zetterstedt); Phoridae: Megaselia sp.) emerged from leaf rolls of H. thestealis, along with parasitoid wasps (Hymenoptera: Eulophidae: Eulophini). Apatelodes torrefacta (Smith) (Apatelodidae), Spilosoma virginica (Fabricius) (Erebidae), and Ectropis crepuscularia (Denis and Schiffermüller) (Geometridae) are newly reported from Aralia spp. based on online photographs of feeding caterpillars.

Teratology in arthropods is widely reported, but the mechanisms leading to abnormal development are under-studied. This study focuses on a teratological case discovered during dissection, in which a male of the tawny crazy ant (Nylanderia fulva) exhibited genital duplication. Using nano-computed tomography, I generated three-dimensional models of the genital capsule to describe which structures were duplicated. The left side of the genital capsule appeared as normal, but the right side exhibited anomalies such as two additional gonostyles (parameres), an extra gonossiculus (digitus) on the volsella, and an additional volsella-like growth bearing peg-like denticles. This growth emerged between the mediad extra gonostyle and the penisvalva.