Journal of the International Heteropterists' Society

Dimifaia secunda, a New Species of Mezirinae from Papua New Guinea (Hemiptera: Aradidae)

ERNST HEISS — 2025-07-31

The fauna of Aradidae or flat bugs of New Guinea Island is still insufficiently explored and studied. Of the largest subfamily of tropical Aradidae, 26 genera are recorded to date from New Guinea Island. Recent examination of macropterous Mezirinae from Papua proved that there is another species belonging to the monotypic genus Dimifaia Kormilev, 1971. This species is described and figured herein as Dimifaia secunda new species.

**Extant or Extinct? A New Allelocoris Species Based on a Specimen Collected in 1899 (Heteroptera: Aradidae)**

TAMÁS VÁSÁRHELYI — 2025-07-31

An apterous Mezirinae, Allelocoris ursulae new species is described from Petrópolis, Brazil. The area where this new species was collected, previously considered a stable biotope favorable for apterous aradid species, has suffered extensive deforestation and repeated mudslides. The species or its local population with unknown, but presumably limited distributional range, may even have become extinct. This concern is supported by the fact that no additional specimens have been collected in more than 125 years.

Taxonomic Review of the Plant Bug Tribe Bryocorini in Japan, with Additional New Species of Monalocoris from Taiwan and Michailocoris from Ryukyu Islands (Hemiptera: Heteroptera: Miridae: Bryocorinae)

TOMOHIDE YASUNAGA — 2025-07-31

Japanese fauna of the plant bug tribe Bryocorini is updated, with descriptions of three new species, Bryocoris ezomonticola new species, Cobalorrhynchus nihonicus new species, and Monalocoris siranui new species. In addition, the male of Monalocoris amamianus Yasunaga is described for the first time, and Monalocoris tsaiorum new species (from Nantou, Taiwan) and Michailocoris haregi new species (Bryocorinae: Eccritotarsini) are also described. A key is provided to facilitate identification of Japanese bryocorine taxa.

**Taxonomic Revision of the Genus Phymacysta Monte, with the Description of Three New Species from Ecuador, Panama, and Peru (Heteroptera: Tingidae)**

ALEXANDER H. KNUDSON — 2025-07-31

The genus Phymacysta Monte is revised and three new species are described: P. ecuadorensis new species from Ecuador, P. paragatun new species from Panama, and P. peruana new species from Peru. Herein, all extant species are diagnosed, a new key for species identification is provided, and lectotypes are designated for Leptostyla tumida Champion and Leptostyla vesiculosa Champion. Phymacysta tumida (Champion) is reported from Costa Rica, and Forestiera phillyreoides (Benth.) Torr., and P. vesiculosa (Champion) is reported from Colombia, Costa Rica, and Verbenaceae for the first time.

In Memory of Merrill Henry Sweet, II (1935–2024): Biography, List of Publications, Described Taxa, and Patronyms

THOMAS J. HENRY — 2025-07-31

Merrill Henry Sweet, II, was born in Chicago Heights, Illinois, on 5 September 1935 and passed away on 19 August 2024 in El Paso, Texas, just before his 89^th birthday...

Pohnpeia, a Replacement Name Proposed for the Preoccupied Generic Name, Ponapea Ruckes, 1963 (Hemiptera: Heteroptera: Pentatomidae: Asopinae)

DAVID A. RIDER — 2025-07-31

Ruckes (1963), in his monograph of the Pentatomoidea (Insecta: Hemiptera) of Micronesia, described Ponapea arachnoides as a new genus and species of Asopinae (Pentatomidae) from the Island of Ponape in the Caroline Islands...