Journal of Asia-Pacific Biodiversity 9 (2016) 253e255

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Journal of Asia-Pacific Biodiversity

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Short communication A new record of the tribe Coridromiini (: : : Orthotylinae) from the Korean Peninsula

Junggon Kim, Sunghoon Jung*

Laboratory of Systematic Entomology, Department of Applied Biology, College of Agriculture and Life Sciences, Chungnam National University, Daejeon, South Korea article info abstract

Article history: The tribe Coridromiini Tatarnic and Cassis (Hemiptera: Heteroptera: Miridae: Orthotylinae) is recorded Received 5 February 2016 from the Korean Peninsula for the first time based on a species of Coridromius chinensis Liu and Zhao, Accepted 19 February 2016 1999. The morphological information such as diagnosis and description of male genitalia, and biological Available online 2 March 2016 information are presented with photographs and illustrations. Copyright Ó 2016, National Science Museum of Korea (NSMK) and Korea National Arboretum (KNA). Keywords: Production and hosting by Elsevier. This is an open access article under the CC BY-NC-ND license (http:// Coridromiini creativecommons.org/licenses/by-nc-nd/4.0/). Korean Peninsula Miridae new record Orthotylinae

Introduction Materials and methods

The tribe Coridromiini Tatarnic and Cassis (Hemiptera: Hetero- The photographs of examined specimens were taken with a ptera: Miridae: Orthotylinae) is the only mirid group known for its Leica M165C microscope. Measurements were taken using the unique mating strategy, “traumatic insemination” (TI) (Tatarnic software of the same microscope. All measurements are given in et al 2006; Tatarnic and Cassis 2008). For mating such as TI, the millimeters. To observe the male genitalia, a genital segment was male of this group has a sharp and long scythe-like left paramere detached, and then soaked and boiled in 10% KOH solution at 70C coupled with its aedeagus, hypodermic copulatory organ, and at 5e10 minutes until it became transparent. After it was placed in pierces the body of the female with its hypodermic organ, which is distilled water, it was dissected to examine the genitalia. Termi- distinguished from the TI observed in other groups in the infraorder nology mainly follows Miyamoto and Yasunaga (1999) and Tatarnic (e.g. Prostemmatinae, Lyctocoridae; Tatarnic et al and Cassis (2008). Depository of the specimens is the Laboratory of 2006). Therefore, the hypodermic genitalia formed with left para- Systematic Entomology, Chungnam National University (CNU), mere and aedeagus is a major diagnostic character of this tribe in Daejeon, Korea. Distribution with an asterisk means its new record Miridae (Tatarnic and Cassis 2012). In this study, the tribe Cori- in this area. dromiini is reported for the first time with a species of Coridromius chinensis Liu and Zhao, 1999 from the Korean Peninsula. The morphological information such as diagnosis and description of the Taxonomic accounts male genitalia is provided with photographs and illustrations. Tribe Coridromiini Tatarnic and Cassis, 2012 Coridromiini Tatarnic and Cassis, 2012: 565. Genus Coridromius Signoret, 1862 Ocypus Montrouzier, 1861: 67 (junior homonym of Ocypus Kirby, 1819, Coleoptera). Type species by monotype: Ocypus variegates Montrouzier, 1861, Australian region. Coridromius Signoret, 1862: 5. New name for Ocypus Montrouzier, * Corresponding author. Tel.: þ82 42 8215767; fax: þ82 42 8238679. E-mail address: [email protected] (S. Jung). 1861. Peer review under responsibility of National Science Museum of Korea (NSMK) and Neocypus Distant, 1914: 378. New name for Ocypus Montrouzier, Korea National Arboretum (KNA). 1861. http://dx.doi.org/10.1016/j.japb.2016.02.002 pISSN2287-884X eISSN2287-9544/Copyright Ó 2016, National Science Museum of Korea (NSMK) and Korea National Arboretum (KNA). Production and hosting by Elsevier. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). 254 J Kim, S Jung / Journal of Asia-Pacific Biodiversity 9 (2016) 253e255

Diagnosis. Distinguished from other tribes of Miridae by body almost yellowish brown with dark markings in anterior part in squat; hindfemur thick and swollen; cuneus deflected (Figures 1A dorsal view, dark brown markings in ventral view; fore and mid and 1B); male genitalia hypodermic formed with left paramere tibia brown with irregular dark spots, 1/2 apical part pale brown (Figure 1F; see Tatarnic and Cassis 2012 for details). except for dark apex; hindtibia with irregular dark spots; tarsus brown except for dark third tarsal segment. Abdomen: brown Coridromius chinensis Liu and Zhao, 1999 tinged with orange color. Surface and vestiture: covered with Coridromius chinensis Liu and Zhao, 1999:57;Tatarnic et al, 2006: somewhat long golden pubescence; pronotum and scutellum with 60; Tatarnic and Cassis, 2008: 45. deep and irregular punctures; hindfemur with punctures poster- Coridromius bufo Miyamoto and Yasunaga, 1999: 33 (syn. Cherot oventrally; tibia with suberect setae. Structure: Head: ocelli absent; et al, 2004: 63). vertex width about three times as long as the first antennal segment, vertex width shorter than the second antennal segment; Diagnosis. Recognized by body generally mottled brown; apical proportion of first to fourth antennal segments 0.1:0.8:0.3:0.2; part of second antennal segment entirely dark brown; lateral rostrum reaching to hindcoxae; proportion of first to fourth rostral margins of pronotum and hemelytra without brown markings; segments 0.2:0.2:0.2:0.3. Thorax: pronotum trapezoid, mesal pro- apex of scutellum rounded and distinctly swollen (Figure 1B; ar- notal length as long as width of anterior margin, with callus row); femur with four trichobothria (Figure 1C; arrow); pygophore somewhat swollen; scutellum equilateral, apex of scutellum with mesal suture and with long and thin ventral apical process rounded and distinctly swollen (Figure 1B; arrow); lateral margin (Figure 1E); left paramere scytheeshaped and opened entirely of hemelytra slightly curved, cuneal fracture well developed; legs (Figure 1F), right paramere with long and sharp process at apex generally slender; hindfemur thick and swollen. Abdomen: (Figures 1GeH). rounded, almost reaching to apex of membrane. Genitalia: genital Redescription. MALE: Coloration: generally mottled brown. segment rounded with asymmetric parameres (Figures 1DeH); Head: generally brown; compound eyes reddish brown; antennae pygophore with mesal suture (ms) and with long and thin ventral generally brown; middle of first antennal segment dark brown; apical process (vap)(Figure 1E); phallobase (pb) located in right apical part of second antennal segment dark brown; third and part of abdomen in dorsal view (Figure 1D); left paramere scythee fourth antennal segment dark brown except for base; frons brown shaped and opened entirely (Figure 1F), right paramere with long tinged with purple color; tylus pale brown, both margins of tylus and sharp process at apex (Figures 1GeH). dark brown; rostrum generally brown, first and fourth rostral FEMALE: Coloration: as in male. Surface and vestiture: as in male. segment dark brown. Thorax: pronotum mottled dark brown with Structure: as in male except for abdomen with ovipositor scattered pale spots; collar paler brown; callus paler brown; reaching to posterior margin of abdominal sternite III. scutellum dark brown with longitudinal pale line, apex of scutellum Paragenitalia: externally invisible. pale brown; hemelytra generally dark brown; clavus dark brown, Measurements (in mm). Male (n ¼ 2)/female (n ¼ 3). Body length, posterior part of clavus paler than anterior part; posterior part of tyluseapex of membrane: 2.55e2.62/2.83e2.89; head length, corium pale brow; paracuneus dark brown, margin of paracuneus excluding collar: 0.13e0.15/0.15e0.16; head width, including com- pale brown; cuneus almost dark brown, apex of cuneus pale brown; pound eyes: 0.90e0.93/0.93e0.97; vertex width: 0.53e0.56/0.58e membrane grayish dark brown; legs generally brown; hindfemur 0.61; first antennal segment length: 0.13e0.18/0.18e0.20; second

Figure 1. Dorsal habitus and diagnostic characters of Coridromius chinensis. A, Dorsal habitus; B, Scutellum in lateral view (arrow: swollen apex); C, Hindfemur in ventral view (arrow: four trichobothria); D, Genital segment in dorsal view; E, Ditto, in posteroventral view; F, Left paramere; G, Right paramere in dorsal view; H, Ditto, in ventral view. J Kim, S Jung / Journal of Asia-Pacific Biodiversity 9 (2016) 253e255 255 antennal segment length: 0.83e0.85/0.94e0.96; third antennal and was supported by Basic Science Research Program through segment length: 0.28e0.31/0.33e0.36; fourth antennal segment the National Research Foundation of Korea (NRF) funded by length: 0.18e0.21/0.21e0.23; total antennal length: 1.42e1.55/1.66e the Ministry of Science, ICT & Future Planning (NRFe 1.75; rostral length: 0.92e0.96/1.04e1.05; mesal pronotal length: 2014R1A1A1005338). 0.66e0.69/0.67e0.69; basal pronotal maximal width (straight): 1.55e1.57/1.59e1.62; anterior scutellumal width: 0.61e0.64/0.63e 0.70; mesalscutellumal length: 0.86e0.89/0.91e0.94; outer embolial References margin length (straight): 1.35e1.39/1.42e1.47; outer cuneal marg- in length (straight): 0.46e0.50/0.54e0.56; maximal width across Cherot F, Konstantinov F, Yasunaga T. 2004. Two new plant bug species of the genus e e Coridromius Signoret, 1962 from the Oriental Region with a new synonymy hemelytron: 0.83 0.86/0.84 0.86; foreleg (femur:tibia:tarsus): (Heteroptera, Miridae, , ). Belgian Journal of Entomology 6: 0.60e0.61:0.61e0.63:0.32e0.34/0.60e0.62:0.67e0.69:0.31e0.32; 57e67. midleg (femur:tibia:tarsus): 0.72e0.73:0.74e0.78:0.30e0.32/0.73e Distant WL. 1914. Rhynchota from New Caledonia and the surrounding islands. In: , e e e e Roux Sarasin, editor. Nova Caledonia. Forschungen in Neu Caledonien und auf 0.74:0.75 0.77:0.34 0.36; hindleg (femur:tibia:tarsus): 1.12 1.13: den LoyaltyeInseln, Vol. 2(4). Wiesbaden: Kreidels. pp. 369e390. A. Zoolgy. 1.16e1.19:0.43e0.46/1.17e1.19:1.12e1.14:0.47e0.52. Liu GQ, Zhao RJ. 1999. New species of genus Coridromius Signoret from China Specimen examined. [CNU] 4__,3\\, Tottori Pref., Honshu, Japan, (Heterotera: Miridae). Acta Zootaxonomica Sinica 24:55e58 [in English with \ e Chinese summary]. 26.vi.2015, on Mallotus japonicus, JG Kim; 1 , Sanghyo dong, Seo- Miyamoto S, Yasunaga T. 1999. Discovery of the genus Coridromius Signoret (Het- guipoesi, Jejuedo (Is.), Korea, 3.ix.2015, on M. japonicus, JG Kim; eroptera: Miridae) from Japan, with descriptions of two new species. Biogeog- [CNU] 2__,3\\, Jocheoneeub, Jejuesi, Jejuedo (Is.), Korea, raphy 1:33e37. e 5.ix.2015, on Mallotus japonicus, JG Kim. Montrouzier PA. 1861. Essai sur la faune entomologique de la Nouvelle Calédonie. Annales de la Societe Entomologique de France 1:59e74. Distribution. Korea, Japan. Signoret V. 1862. Coridromius n. n. f. Ocypus Montrouzier. Bulletin de la Societe Host. Mallotus japonicus (Thunb.) (Euphorbiaceae). Entomologique de France 2:5. Tatarnic NJ, Cassis G, Hochuli DF. 2006. Traumatic insemination in the plant bug genus Coridromius Signoret (Heteroptera: Miridae). Biology Letters 2:58e61. Acknowledgments Tatarnic NJ, Cassis G. 2008. Revision of the plant bug genus Coridromius Signoret (Insecta: Heteroptera: Miridae). Bulletin of the American Museum of Natural This research was supported by a grant from the National History 315:1e95. Tatarnic NJ, Cassis G. 2012. The Halticini of the world (Insecta: Heteroptera: Mir- Institute of Biological Resources (NIBR), funded by the Ministry of idae: Orthotylinae): generic reclassification, phylogeny, and host plant associ- Environment (MOE) of the Republic of Korea (NIBR201501203), ations. Zoological Journal of the Linnaean Society 164:558e658.