Anthocoris kalopanacis Kerzhner, 1977

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 : 399-401

Anthocoris kalopanacis Kerzhner, 1977

( Figs 7G–H , 9D , 21 )

Anthocoris kalopanacis Kerzhner, 1977: 8 . Holotype:J, Kuril Is, Kunashir, Tretyakovo (ZMAS). Note: The published year of this species has long been treated as 1976 in previous papers; however, it was corrected by AඎKൾආൺ et al. (2013a), who confirmed Kerzhner’s paper formally published in 1977 (KൾඋඓHඇൾඋ 1977).

Anthocoris kalopanacis : KൾඋඓHඇൾඋ (1988): 773 (in key,figure);Pඣඋංർൺඋඍ (1996):112 (catalogue, distribution);YൺඌඎඇൺGൺ (2001b):281 (record, diagnosis, habitat); KൺඇඒඎKඈඏൺ & MൺඋඎඌංK (2006): 168 (record); Gൺඉඈඇ & Kඈඇඌඍൺඇඍංඇඈඏ (2008): 26 (listed);VංඇඈKඎඋඈඏ et al.(2010): 57 (catalogue, distribution); AඎKൾආൺ et al. (2013a): 85 (catalogue); Yൺආൺൽൺ et al. (2016): 422 (catalogue, distribution).

Type material examined. Hඈඅඈඍඒඉൾ: J, Tretyakovo, Kunashir, 17.VI.1973, I. M. Kerzhner (ZMAS, image examined). Pൺඋൺඍඒඉൾ: ♀, Alekhino, Kunashir 15.VI.1973, I. M. Kerzhner (ZMAS, image examined).

Additional material examined. JAPAN: HඈKKൺංൽඈ: 1 ♀, Otaru-shi, Tenjin-josuijo, 22.vii.1999, A.Yamamoto; 1♀, Otaru-shi, Okusawa-suigenchi, 27.vii.2004,A.Yamamoto (all in TKPM). HඈඇඌHඎ: Tochigi Pref.: 1 ♀ ( Figs 7G–H , 9D ), Nikko-shi, Shôbugahama, 11.vi.2005, S. Maehara; 1 ♀, same locality, 11.vi.2010, S. Maehara; 1♀, same locality, 25.v.2011, S. Maehara (all in TKPM).

Differential diagnosis. Recognized by the following combination of characters: Body ( Figs 7G–H ) uniformly black; labium ( Fig. 7H ) reaching to middle of prosternum (not reaching procoxae); membrane ( Fig. 7G ) smoky dark brown, with two small indistinct grayish pale markings on innermost portion and behind apex of cuneus; ostiolar peritreme ( Fig. 9D ) straight, almost same width throughout, obtuse at apex and slightly curved forward; legs ( Figs 7G–H ) black, but apices of femora and tibiae tinged with yellowish brown. Most similar in general appearance to A. takahashii , but separable from that species by the uniformly black hemelytra, labium reaching the middle of prosternum, and membrane with two small indistinct grayish pale markings on the innermost portion and behind apex of cuneus.

Redescription. Measurements [mm; ♀♀ (n = 5)]. Body length 4.85–5.40; head length (excl. neck) 0.56–0.63; head width across eyes 0.60–0.65; vertex width 0.35–0.38; length of antennal segments I – 0.20–0.23, II – 0.54–0.60, III – 0.31–0.35, and IV – 0.39–0.44; length of labial segments II – 0.14–0.19, III – 0.49–0.53, and IV – 0.28–0.31; anterior pronotal width 0.50–0.59; mesal pronotal length 0.74–0.80; basal pronotal width 1.54–1.69; length of embolial margin 1.58–1.78; length of cuneal margin 0.84–0.94; maximum width across hemelytra 1.60–1.75.

Bionomics. Anthocoris kalopanacis is found on Kalopanax septemlobus (Thunb.) Koidz. (Araliaceae) (KൾඋඓඇHൾඋ 1977, YൺඌඎඇൺGൺ 2001b).

Distribution. Japan: Hokkaido *; Honshu*: Tochigi. Chishima (Kuril) Islands: Kunashir Is. (KൾඋඓHඇൾඋ 1977, KൺඇඒඎKඈඏൺ & MൺඋඎඌංK 2006, VංඇඈKඎඋඈඏ et al. 2010). The species has been restricted to Kunashir Island to date; however, we confirm that it occurs on mainland Japan ( Fig. 21 ).

Figures

Fig. 7. Habitus of Anthocoris spp., dorsal (A, C, E, G, I, K) and lateral (B, D, F, H, J, L) views. A–B – A. chibi Hiura, 1959, male; C–D – A. confusus Reuter, 1884, male; E–F – A. japonicus Poppius, 1909, male; G–H – A. kalopanacis Kerzhner, 1977, female; I–J – A. nemoralis (Fabricius, 1794), male; K–L – A. takahashii Hiura, 1959, male. Scale bars: 1.0 mm.

Fig. 9. Scanning electron micrographs of ostiolar peritreme and evaporatorium of Anthocoris spp, left lateroventral view. A – A. chibi Hiura, 1959, female; B – A. confusus Reuter, 1884, male (from India); C – A. japonicus Poppius, 1909, female; D – A. kalopanacis Kerzhner, 1977, female; E – A. takahashii Hiura, 1959, female; F – A. miyamotoi Hiura, 1959, female; G – A. venustus sp. nov., paratype, male. Abbreviations: eva ‒ evaporatorium; mf ‒ median furrow; op ‒ ostiolar peritreme; sca ‒ supracoxal area.

Fig. 21. Distribution of Anthocoris takahashii Hiura, 1959 (circles), A. japonicus Poppius, 1909 (triangles), and A. kalopanacis Kerzhner, 1977 (squares) in Japan. Filled symbols represent records based on specimens examined by us, open symbols represent literature records.