Acrorrhinium Noualhier, 1895

Duwal, Ram Keshari, Yasunaga, Tomohide, Tomokuni, Masaaki, Nakatani, Yukinobu & Hirowatari, Toshiya, 2017, Further records on the plant bug tribe Hallodapini (Hemiptera: Heteroptera: Miridae: Phylinae) in Asia, with proposition of two new species and a new synonymy, Zootaxa 4258 (5), pp. 401-424 : 402

Acrorrhinium Noualhier, 1895

Acrorrhinium Noualhier, 1895: 175 (n. gen.); Schuh, 1984 (diag.); 1995: 213 (cat.); Kerzhner & Josifov, 1999: 286 (cat.); Yasunaga, 2001: 152 (diag.); Yasunaga et al., 2013b: 430 (diag.); Schuh & Menard, 2013: 6 (tribal placement). Type species by monotypy: Acrorrhinium conspersus Noualhier, 1895 .

Distinguished from other hallodapine genera by the following characters: elongated body about 3–7 mm in length; remarkably long appendages; nearly parallel hemelytron laterally; pale to deep brown coloration, with either mottled or contrasting maculae on hemelytron; protuberant eyes far from anterior margin of pronotum; strongly convex frons, with spiniform protuberance anteriorly; and form of endosoma. For detailed description see Schuh (1984: 103).

Among thirty-one described species of genus Acrorrhinium from the Old World tropics and sub-tropics, seventeen species are known to occur in Asiatic tropics and sub-tropics ( Duwal et al., 2014; Schuh, 1984; 2002 – 2013; Yasunaga et al., 2013b; Yasunaga & Duwal et al., 2015). A single temperate zone inhabitant, Acrorrhinium inexpectatum is known from East Asia , including Japan. As mentioned by Yasunaga et al. (2013b), members of this unique genus inhabit tree trunks or branches ( Fig. 1 A), so they often have a cryptic, mottled color pattern similar to their habitat ( Fig. 1 B–F).

Figures

FIGURE 1. Habitat (A) and habitus images of live Asian hallodapines. A. Japanese Sakura-cherry, Prunus yedoensis, habitat of Acrorrhinium inexpectatum. B. A. inexpectatum, male adult. C. Ditto, female adult. D. Ditto, darkened variant. E. Ditto, final-instar nymph, male. F. Ditto, female. G. Hallodapus albofasciatus, macropterous male. H. Ditto, brachypterous female. I. H. kyushuensis, macropterous male. J. Ditto, brachypterous female.