Acompocoris Reuter, 1875

Yamada, Kazutaka & Yasunaga, Tomohide, 2021, The tribe Anthocorini in Japan (Hemiptera: Anthocoridae): descriptions of new species, review of distribution and bionomics, Acta Entomologica Musei Nationalis Pragae 61 (2), pp. 375-426 : 384

Genus Acompocoris Reuter, 1875

Acompocoris Reuter, 1875: 63 . Type species by subsequent designation (KංඋKൺඅൽඒ 1906: 120): Lygaeus pygmaeus Fallén, 1807 .

Acompocoris (selected references): Rൾඎඍൾඋ (1884): 56, 87 (in key, redescription); Pඈඉඉංඎඌ (1909): 28 (in key); Hൺඋඋංඌ & SHඎඅඅ (1944): 207 (listed); SඍංർHൾඅ (1958): 13 (in key); SඍංർHൾඅ (1960): 358 (catalogue, fauna of Palaearctic); KൾඋඓHඇൾඋ (1964): 696, 698 (in key, diagnosis); Cൺඋൺඒඈඇ (1972): 345 (listed); Pඣඋංർൺඋඍ (1972): 78, 146 (in key, redescription, fauna of W. Palaearctic); HൾඋඋංඇG (1976): 145–146 (figure, in key); Kൾඅඍඈඇ (1978): 18, 32 (in key, redescription, fauna of Canada and Alaska); Fඈඋൽ (1979): 55 (check list of the world); Öඇൽൾඋ (1982):28, 75 (in key, redescription,fauna of Turkey); Hൾඇඋඒ (1988): 13 (catalogue, N. America); KൾඋඓHඇൾඋ (1988): 770, 774 (in key, note); Lൺඍඍංඇ & Sඍൺඇඍඈඇ (1992): 427 (diagnosis, habitat, prey); Pඣඋංർൺඋඍ (1996): 108 (catalogue, Palaearctic); Lൺඍඍංඇ (2000): 612 (bionomics); Bඎ & ZHൾඇG (2001): 45, 109 (distribution, in key, redescription, fauna of China); YൺඌඎඇൺGൺ (2001b): 280 (diagnosis, fauna of Japan); WൺർHආൺඇඇ et al. (2006):182 (distribution, habitat); Hඈඋඍඈඇ (2008): 2403 (listed).

Diagnosis. Distinguished from the other genera of Anthocorini by the combination of the following characters: body shiny, generally pubescent; labium almost reaching or exceeding metacoxae, but reaching near middle of mesosternum in A. brevirostris Kerzhner, 1979 ; hemelytra densely covered with setigerous punctures; ostiolar peritreme ( Fig. 5A ) broad, slightly curved forward, slightly protruding at apex but not prolonged tongue-like, apex not reaching outer margin of metapleuron and continued by a fine carina; metasternum apically triangular; metacoxae contiguous with each other.

Remarks. Acompocoris comprises six species in the Holarctic Region (Pඣඋංർൺඋඍ 1972, 1996; Hൾඇඋඒ 1988). Four of these species are native to the Palaearctic, one in the Nearctic, and one species, A. pygmaeus (Fallén, 1807) , is widespread in Eurasia and has been introduced in eastern Canada.

Species of this genus are found on conifers (e.g., Pinus , Abies , Picea , and Larix species ), where they feed on aphids (RඈඓHKඈඏ 1966, Pඣඋංർൺඋඍ 1972, Lൺඍඍංඇ & Sඍൺඇඍඈඇ 1992).

Figures

Fig. 5. Scanning electron micrographs of diagnostic characters of Japanese anthocorids. A–C – Acompocoris brevirostris Kerzhner, 1979, female (A) and male (B–C); D–F – Tetraphleps aterrima (J. Sahlberg, 1878), male.A, D – ostiolar peritreme and evaporatorium, left lateroventral view; B, E – pygophore with paramere, dorsal view; C, F – paramere, dorsal views. Abbreviations: eva ‒ evaporatorium; mf ‒ median furrow; op ‒ ostiolar peritreme; prm ‒ paramere; pyg ‒ pygophore.