Tomohide Yasunaga

Three new species of the ant-mimetic plant bug genus Pilophorus Hahn are diagnosed and described: P. ishizuchi new species and P. takaii new species from Shikoku, Japan, and P. tenni new species from Nantou, Taiwan, based on the specimens collected by fieldworks in the past few years. An updated checklist of known Pilophorus species from Japan and Taiwan is provided.

The identities of the Japanese fleahopper species of the genus Halticus Hahn, 1833 (Orthotylinae: Halticini) are reviewed. The population of Halticus in Japan has traditionally been regarded as a single taxon, H. insularis Usinger, 1946. However, two species, Halticus minutus Reuter, 1885 [= H. tibialis Reuter, 1891] and H. esakii new species (herein diagnosed and described), are now verified to occur in Japan. An annotated checklist and a key are provided to aid in identification of three Halticus species confirmed to inhabit the warmer (subtropical and tropical) regions of Japan, Micronesian islands and atolls, and the Oriental Region. New distributional records of H. insularis and H. minutus in Southeast Asia are also presented.

Two unique deraeocorine plant bug species representing new genera are reported from Nepal and Thailand: Botocudocapsus parvissimus new genus and new species (from Nepal and Thailand) and Samakhusiella lucidopilosa new genus and new species (from Nepal). The tribal placement of the genus Apilophorus Hsiao and Ren in Surinamellini is re-evaluated and here proposed to be transferred to Saturniomirini; the single representative of the genus, A. fasciatus Hsiao and Ren, 1983, is reported from Thailand for the first time.

The Japanese fauna of conifer-inhabiting plant bug genus Pinalitus Kelton is reviewed, with description of Pinalitus reoi new species. This new species, presumed to be most closely related to P. rubeolus (Kulik), was recently found on Pinus parviflora in the mountain zone of Oita Prefecture, Kyushu. A species previously recorded as P. rubeolus from Japan is now considered to be a misidentification of P. rubricatus (Fallén). A revised key to Japanese species is provided.

A unique isometopine plant bug species representing a new genus, Reometopus kijimura new genus and new species (provisionally belonging to the tribe Myiommini), is described from Okinawa Island, Japan. Paloniella parallela Yasunaga and Hayashi, 2002, is proposed to be synonymized with Isometopus hasegawai Miyamoto, 1965. The Japanese fauna of the subfamily Isometopinae is accordingly updated, and an annotated checklist and a key to genera and species are provided.

A new species representing a new genus of mirine plant bug, Itoigawacoris venustulus, is diagnosed and described, based on specimens recently discovered from a geographically unique region of world’s heaviest snowfall along the Fossa Magna in Niigata Prefecture, Japan. This vernal, endemic mirid was confirmed to be only associated with a Japanese boxwood, Buxus microphylla, on which the immature forms and adults were observed to co-occur before the spring thaw. Judging from the male and female genitalic structures, the present new genus is included in ‘Lygus-complex’ and assumed to be most closely related to Lygocoris Reuter, 1875. Some unknown microstructures found in the late immature forms of I. venustulus are also reported and discussed.

One hundred and eighty-one genera of dorsally punctate Mirini (Hemiptera: Heteropteran: Miridae: Mirinae) and related taxa of the World are keyed and diagnosed, a list of included species and references to species key(s) when available are provided, as well as data about species distribution, biology and host association(s). Habitus in dorsal and lateral views and morphological details of numerous species are illustrated. Two new genera are described: Neodagbertus gen. nov. and Pseudodagbertus gen. nov. to accommodate six species originally classified within Dagbertus Distant, 1904 and Eubatas Distant, 1884. Montanorthops Ghauri, 1978 status reinstated is upgraded to genus level. Nasutimiris Odhiambo, 1960 status revised is considered as subgenus of Buettneriella Poppius, 1912a. Three new synonymies are established: Buettneriella Poppius, 1912a = Kiambura China, 1936 new junior subjective synonym, Thania Poppius, 1915a = Fangumellus Yasunaga, Oh & Lee, 2016 new junior subjective synonym and Henicocnemis amazonica Carvalho & Costa, 1993c = H. egeri Carvalho & Costa, 1994b new junior subjective synonym. The following new combinations are published: Buettneriella aias (Linnavuori, 1974a) comb. nov., B. bifurcata (Linnavuori, 1974a) comb. nov., B. coffeae (China, 1936) comb. nov., B. kleis (Linnavuori, 1974a) comb. nov., B. (Nasutimiris) politus (Odhiambo, 1960d) comb. nov. [all transferred from Kiambura], Neodagbertus bahianus (Carvalho, 1975a) comb. nov., N. diamantinus (Carvalho, 1984) comb. nov., N. froeschneri (Carvalho, 1985f) comb. nov., N. insignis (Carvalho, 1977a) comb. nov. [all transferred from Dagbertus], Pseudodagbertus amapaensis (Carvalho, 1988a) comb. nov. [transferred from Dagbertus], P. lombardensis (Carvalho & Costa, 1991) comb. nov. [transferred from Eubatas], Sabactus nakainaensis (Carvalho, 1987a) comb. nov. [transferred from Prolygus Carvalho, 1987a], Thania flavobadia (Yasunaga, Oh & Lee, 2016) comb. nov. [transferred from Fangumellus], and Tropidosteptes chiriquina (Carvalho, 1986b) comb. nov. [transferred from Chrysodasia Reuter, 1892]. Tinginotopsis javanensis Hsiao, 1944 comb. reinstated is again classified in the genus in which it was originally described. Chilocrates patulus (Walker, 1873) and Pseudodagbertus lombardensis are cited for the first time respectively from Vietnam and French Guiana, Zalmunna dux Distant, 1909 being cited for the first time from Cambodia and from Papua New Guinea. Finally, the subtribal classification and the validity of Lygus complex are discussed. Four synonymies are established at subtribal level: Capsaria Burmeister, 1835 = Horistaria Van Duzee, 1916a = Dionconotaria Reuter, 1910 = Miraria Hahn, 1833 new subjective synonyms.

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.

Three new species of the plant bug tribe Pilophorini, belonging to Hypseloecus Reuter, 1891 and Pilophorus Hahn, 1825 are described from Japan as new to science, based on recently accumulated specimens as well as field-based investigations. Hypseloecus fukutomii sp. nov. and H. tamaderai sp. nov. were confirmed to be associated with Loranthaceae mistletoes, Taxillus yadoriki and T. nigrans. Pilophorus reoi sp. nov., assumed to be a predator, was found from the shrub of a raspberry, Rubus sieboldii, on Amami-Oshima and Okino-Erabu Islands of the Ryukyus. Updated keys to the Japanese species of Hypseloecus and allied members of Pilophorus reoi sp. nov. are also provided.

Andrzej Wolski (1979–2024) was a well-known entomologist and a world specialist on true bugs of the plant bug subfamily Cylapinae (Heteroptera: Miridae). He was an inspiring teacher, who passionately shared his biological knowledge with young people. This paper provides a biography as well as memories from several of his colleagues, a bibliography of his publications, a list of the taxa he described, and a list of patronyms named in his honor. Andrzej published 58 papers, including 45 focusing on Cylapinae. He described seven genera and 114 species.