Journal of the International Heteropterists' Society

**Redescription of Deraeocoris insulicola Poppius, 1915 (Hemiptera, Heteroptera, Miridae)**

GRZEGORZ GIERLASIŃSKI — 2026-04-30

Deraeocoris insulicola Poppius, 1915 (Miridae, Deraeocorinae, Deraeocorini) is redescribed based on newly examined material. The male of this species is described for the first time. Photographic images of male and female habitus and genital structures, as well as scanning electron micrographs of the selected structures are provided.

**Lost in Transition: Is Ptilocnemus larrakia sp. nov. (Hemiptera: Reduviidae: Holoptilinae) a Missing Link Between Indomalayan and Australasian Feather-Legged Assassin Bugs?**

DANIEL J. BARDEY — 2026-04-30

Most adult Holoptilinae in the tribe Holoptilini, including the Australian genus Ptilocnemus Westwood, 1840, have an elaborate glandular structure known as a trichome. This trichome interfaces with its ant prey during predation events. Unlike other genera of Holoptilini though, the nymphs of Ptilocnemus lack any resemblance of a trichome. Here we describe a new species, Ptilocnemus larrakia sp. nov., from the Northern Territory that is contrary to expectations. Although leg colouration, and denser clustering of setae on hind tibia have diagnostic significance, the most striking difference is the unique trichome which includes a new element ‘ptb3’. It is also the first Ptilocnemus species where the nymph is known to possess a trichome during the late instar. This latter observation may have significance for the understanding of the evolutionary history of Ptilocnemus. While the phylogeny of Ptilocnemus and related taxa is yet to be resolved, we speculate that the trichome in the nymphs of Ptilocnemus larrakia sp. nov. may be plesiomorphic, suggesting that this species could be an early diverging species of Ptilocnemus. This finding also suggests that the absence of the gland in the nymphs of other Ptilocnemus species is due to Australian Holoptilini experiencing selective pressures not present in other biogeographical regions.

**A New Species of Bagriella McAtee and Malloch from South America (Hemiptera, Reduviidae, Emesinae)**

Helcio Reinaldo Gil-Santana — 2026-04-30

Bagriella meneguettii Gil-Santana and Oliveira, new species, is described based on a female specimen from Brazil. A revised diagnosis of Bagriella McAtee and Malloch, 1923 is provided, based on characters of both species of the genus, and it is recorded for the first time from South America. High-resolution photographs of the female holotype of Bagriella ornata McAtee and Malloch, 1923, the only previously known specimen of the genus, are presented.

**Redescription of the Bronze Bug Wechina chinai Drake and Slater (Hemiptera: Heteroptera: Thaumastocoridae) from South India**

H. M. YESHWANTH — 2026-04-30

Wechina chinai, previously known from only one male and one female from South India, is redescribed. Habitus images of the adult and nymph and male genitalia are illustrated for the first time and the first host-plant record is given.

Catalog of the Thaumastocoridae (Hemiptera: Heteroptera: Cimicomorpha: Miroidea) of the World

THOMAS J. HENRY — 2026-04-30

In this catalog, we provide a brief historical overview of the family and recognize two subfamilies, 13 genera, including three fossil genera, and 42 species, including three fossil species. We attempt to cover all the major taxonomic works treating the family through 2025, along with a substantial amount of biological, ecological, distributional, and economic literature. For each family, subfamily, genus, and species entry, we provide the author(s), date of publication, and page number, and key words about the contents of the paper in parentheses. Full citations are given in the Literature Cited.

Remarkable Parasitism of Spartocera granulata Stål, 1870 (Hemiptera: Coreidae) by Hexacladia hilaris Burks, 1972 (Hymenoptera: Encyrtidae): a New Host Record from Costa Rica and an Updated Checklist of Encyrtid Parasitoids of Coreidae Worldwide

ANDREY J. PERAZA-SÁNCHEZ — 2026-04-30

Spartocera granulata Stål, 1870 (Coreidae) is documented here as a new host for the encyrtid wasp Hexacladia hilaris Burks, 1972. This finding is significant because H. hilaris is a gregarious endoparasitoid of true bugs (Heteroptera), and all previous host records for this species were exclusively from the family Pentatomidae. The emergence process of the parasitoid wasps is detailed and illustrated with figures and two videos, and information on the biological interactions of Hexacladia species in the Neotropical Region is discussed. In addition, an updated global checklist of leaf-footed bugs (Coreidae) as hosts of Encyrtidae is provided.

**A Check List of Arhaphe Herrich-Schäffer (Hemiptera: Heteroptera: Largidae) with Descriptions of Two New Species from Mexico**

HARRY BRAILOVSKY — 2026-04-30

Two new species of the genus Arhaphe Herrich-Schäeffer collected in Mexico are described: A. favissa new species and A. nicoleta new species. Dorsal and lateral photographs are provided, and a check list of Arhaphe species with distribution records is given.

**Closing a Half-Century Gap: The Discovery of the Male and Notes on Nymphal Morphology of Tetragonotum megacephalum Ruckes (Hemiptera: Pentatomidae: Discocephalinae: Discocephalini)**

KIM RIBEIRO BARÃO — 2026-04-30

Tetragonotum megacephalum Ruckes, 1965 (Pentatomidae: Discocephalinae) was described from a female collected in Bahia, Brazil. Since then, the genus and species have been cited a few times in the literature, including once in a dichotomous key to the broadheaded discocephalines genera, and another two times in checklists of pentatomoids of the Brazilian Caatinga. Based on an additional female and two male specimens, collected in the Caatinga, a seasonally dry forest restricted to northeastern Brazil, we describe the female and male genitalia of T. megacephalum, include notes on nymphal morphology, and provide a map with updated occurrence records. The male pygophore in Tetragonotum Ruckes is similar to other broadheaded discocephalines, such as Discocephala Laporte, Colpocarena Stål, Ischnopelta Stål, and Nigrisagitta Rosso and Campos, with a plate-like segment X beneath which the parameres are accommodated. Also, the pygophore posterolateral angles in T. megacephalum are projected and horizontal, and the phallus is laterally compressed. In the female genitalia, valvifers VIII are as wide as long, covering most of valvifers and laterotergites IX, and laterotergites VIII, laterotergites IX, and valvifers IX are fused to each other.