Eur. J. Entomol. 105: 909–916, 2008
ISSN 1210-5759 (print), 1802-8829 (online)
Taxonomy of the genus Amphiareus (Heteroptera: Anthocoridae)
in Southeast Asia
Tokushima Prefectural Museum, Bunka-no-mori Park, Hachiman-chô, 770-8070 Tokushima, Japan;
Key words. Heteroptera, Anthocoridae, Amphiareus, new species, Southeast Asia, taxonomy
Abstract. Four species of the genus Amphiareus are recognized in southeastern Asia, including two new species, A. edentulus and A.
rompinus, both from Johor, Malaysia. The two known species, A. constrictus (Stål) and A. ruficollaris Yamada & Hirowatari are also
diagnosed and figured; the latter is recorded from this region for the first time. The genus is diagnosed and briefly discussed.
INTRODUCTION Depositories of the types and the other specimens are abbrevi-
ated as follows: HNHM – Hungarian Natural History Museum,
The flower bug genus Amphiareus Distant of the tribe Budapest, Hungary; NSMT – National Science Museum,
Dufouriellini is represented by one cosmopolitan and four Tokyo, Japan; TKPM – Tokushima Prefectural Museum,
Palearctic species (Yamada & Hirowatari, 2003). Among Tokushima, Japan. The new distributional records for the known
the latter, A. obscuriceps (Poppius, 1909) was recently species are indicated by an asterisk (*) after the name of a
recorded from North America (Henry et al., 2008). The region. Abbreviations are also used for several collectors as fol-
cosmopolitan species, A. constrictus (Stål, 1860), is dis- lows: KY (Kazutaka Yamada); MT (Masaaki Tomokuni); TI
tributed mainly in the Old and New World tropics and (Tadashi Ishikawa)
subtropics. In turn, Palearctic species are inhabitants of Amphiareus Distant
temperate to cold temperate areas, except for a single sub- Poronotus Reuter, 1871: 561 (junior homonym of Poronotus
tropical species, A. ochraceus Yamada & Hirowatari, Gill, 1861, Pisces). Type species: Xylocoris constrictus Stål,
2003, that is restricted to the Ryukyus, Japan. Though 1860, subsequent designation by Kirkaldy (1906: 120).
Amphiareus is widely distributed in the world, its fauna in Amphiareus Distant, 1904 (September): 220. Type species:
the tropical region, such as southeastern Asia, has been Xylocoris fulvescens Walker, 1872 (= Xylocoris constrictus
lightly studied. Only A. constrictus was known to occur Stål, 1860); original designation.
in this region to date (Distant, 1910; Péricart, 1996). Poronotellus Kirkaldy, 1904 (November): 280. New replace-
ment name for Poronotus Reuter, 1871 (synonymized by Her-
Three species of this genus have been recognized through
ring, 1965: 203).
the recent continuing investigations of the author and col-
leagues. Diagnosis. Easily distinguished from other genera of
In this paper, Amphiareus of southeastern Asia is the tribe Dufouriellini by the following characters: oblong
revised. Two new species, A. edentulus and A. rompinus, ovate body principally yellowish to brownish colored;
are described below, and the two previously known spe- head produced anteriorly, about as long as width across
cies are diagnosed based on the specimens from south- eyes; rostrum nearly reaching middle of mesosternum;
eastern Asia. The genus is diagnosed, supplementary pronotum narrowed anteriorly, with distinct collar and
illustrations included and briefly discussed for distin- swollen callus; apical portion of corium about as wide as
guishing characters. embolium; membrane usually with three veins; ostiolar
peritreme almost straight, connected to angulate carina
MATERIAL AND METHODS and extending to anterior margin of metapleura;
Most specimens were preserved in 80% ethyl alcohol, then metasternum with bifurcate projection at middle of poste-
dried and mounted for study. Other specimens examined are rior margin; scissures on abdominal tergite reaching pos-
housed in several other institutions. Examination and illustration terior margin of segment II.