Journal of Asia-Pacific Biodiversity 9 (2016) 253e255
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Short communication
A new record of the tribe Coridromiini (Hemiptera: Heteroptera: Miridae: 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
a r t i c l e i n f o
a b s t r a c t
Article history: Received 5 February 2016 Accepted 19 February 2016 Available online 2 March 2016
The tribe Coridromiini Tatarnic and Cassis (Hemiptera: Heteroptera: Miridae: Orthotylinae) is recorded from the Korean Peninsula for the first time based on a species of Coridromius chinensis Liu and Zhao, 1999. The morphological information such as diagnosis and description of male genitalia, and biological information are presented with photographs and illustrations. 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/).
Keywords: Coridromiini Korean Peninsula Miridae new record Orthotylinae
Introduction
Materials and methods
The tribe Coridromiini Tatarnic and Cassis (Hemiptera: Heteroptera: Miridae: Orthotylinae) is the only mirid group known for its unique mating strategy, “traumatic insemination” (TI) (Tatarnic et al 2006; Tatarnic and Cassis 2008). For mating such as TI, the male of this group has a sharp and long scythe-like left paramere coupled with its aedeagus, hypodermic copulatory organ, and pierces the body of the female with its hypodermic organ, which is distinguished from the TI observed in other groups in the infraorder Cimicomorpha (e.g. Prostemmatinae, Lyctocoridae; Tatarnic et al 2006). Therefore, the hypodermic genitalia formed with left paramere and aedeagus is a major diagnostic character of this tribe in Miridae (Tatarnic and Cassis 2012). In this study, the tribe Coridromiini 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 male genitalia is provided with photographs and illustrations.
The photographs of examined specimens were taken with a Leica M165C microscope. Measurements were taken using the software of the same microscope. All measurements are given in millimeters. To observe the male genitalia, a genital segment was detached, and then soaked and boiled in 10% KOH solution at 70 C at 5e10 minutes until it became transparent. After it was placed in distilled water, it was dissected to examine the genitalia. Terminology mainly follows Miyamoto and Yasunaga (1999) and Tatarnic and Cassis (2008). Depository of the specimens is the Laboratory of Systematic Entomology, Chungnam National University (CNU), Daejeon, Korea. Distribution with an asterisk means its new record in this area.
* Corresponding author. Tel.: þ82 42 8215767; fax: þ82 42 8238679. E-mail address:
[email protected] (S. Jung). Peer review under responsibility of National Science Museum of Korea (NSMK) and Korea National Arboretum (KNA).
Taxonomic accounts 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, 1861. Neocypus Distant, 1914: 378. New name for Ocypus Montrouzier, 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/).
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Diagnosis. Distinguished from other tribes of Miridae by body squat; hindfemur thick and swollen; cuneus deflected (Figures 1A and 1B); male genitalia hypodermic formed with left paramere (Figure 1F; see Tatarnic and Cassis 2012 for details). Coridromius chinensis Liu and Zhao, 1999 Coridromius chinensis Liu and Zhao, 1999: 57; Tatarnic et al, 2006: 60; Tatarnic and Cassis, 2008: 45. Coridromius bufo Miyamoto and Yasunaga, 1999: 33 (syn. Cherot et al, 2004: 63). Diagnosis. Recognized by body generally mottled brown; apical part of second antennal segment entirely dark brown; lateral margins of pronotum and hemelytra without brown markings; apex of scutellum rounded and distinctly swollen (Figure 1B; arrow); femur with four trichobothria (Figure 1C; arrow); pygophore with mesal suture and with long and thin ventral apical process (Figure 1E); left paramere scytheeshaped and opened entirely (Figure 1F), right paramere with long and sharp process at apex (Figures 1GeH). Redescription. MALE: Coloration: generally mottled brown. Head: generally brown; compound eyes reddish brown; antennae generally brown; middle of first antennal segment dark brown; apical part of second antennal segment dark brown; third and fourth antennal segment dark brown except for base; frons brown tinged with purple color; tylus pale brown, both margins of tylus dark brown; rostrum generally brown, first and fourth rostral segment dark brown. Thorax: pronotum mottled dark brown with scattered pale spots; collar paler brown; callus paler brown; scutellum dark brown with longitudinal pale line, apex of scutellum pale brown; hemelytra generally dark brown; clavus dark brown, posterior part of clavus paler than anterior part; posterior part of corium pale brow; paracuneus dark brown, margin of paracuneus pale brown; cuneus almost dark brown, apex of cuneus pale brown; membrane grayish dark brown; legs generally brown; hindfemur
almost yellowish brown with dark markings in anterior part in dorsal view, dark brown markings in ventral view; fore and mid tibia brown with irregular dark spots, 1/2 apical part pale brown except for dark apex; hindtibia with irregular dark spots; tarsus brown except for dark third tarsal segment. Abdomen: brown tinged with orange color. Surface and vestiture: covered with somewhat long golden pubescence; pronotum and scutellum with deep and irregular punctures; hindfemur with punctures posteroventrally; tibia with suberect setae. Structure: Head: ocelli absent; vertex width about three times as long as the first antennal segment, vertex width shorter than the second antennal segment; proportion of first to fourth antennal segments 0.1:0.8:0.3:0.2; rostrum reaching to hindcoxae; proportion of first to fourth rostral segments 0.2:0.2:0.2:0.3. Thorax: pronotum trapezoid, mesal pronotal length as long as width of anterior margin, with callus somewhat swollen; scutellum equilateral, apex of scutellum rounded and distinctly swollen (Figure 1B; arrow); lateral margin of hemelytra slightly curved, cuneal fracture well developed; legs generally slender; hindfemur thick and swollen. Abdomen: rounded, almost reaching to apex of membrane. Genitalia: genital segment rounded with asymmetric parameres (Figures 1DeH); pygophore with mesal suture (ms) and with long and thin ventral apical process (vap) (Figure 1E); phallobase (pb) located in right part of abdomen in dorsal view (Figure 1D); left paramere scythee shaped and opened entirely (Figure 1F), right paramere with long and sharp process at apex (Figures 1GeH). FEMALE: Coloration: as in male. Surface and vestiture: as in male. Structure: as in male except for abdomen with ovipositor reaching to posterior margin of abdominal sternite III. Paragenitalia: externally invisible. Measurements (in mm). Male (n ¼ 2)/female (n ¼ 3). Body length, tyluseapex of membrane: 2.55e2.62/2.83e2.89; head length, excluding collar: 0.13e0.15/0.15e0.16; head width, including compound eyes: 0.90e0.93/0.93e0.97; vertex width: 0.53e0.56/0.58e 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
antennal segment length: 0.83e0.85/0.94e0.96; third antennal segment length: 0.28e0.31/0.33e0.36; fourth antennal segment length: 0.18e0.21/0.21e0.23; total antennal length: 1.42e1.55/1.66e 1.75; rostral length: 0.92e0.96/1.04e1.05; mesal pronotal length: 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; mesal scutellumal length: 0.86e0.89/0.91e0.94; outer embolial margin length (straight): 1.35e1.39/1.42e1.47; outer cuneal margin length (straight): 0.46e0.50/0.54e0.56; maximal width across hemelytron: 0.83e0.86/0.84e0.86; foreleg (femur:tibia:tarsus): 0.60e0.61:0.61e0.63:0.32e0.34/0.60e0.62:0.67e0.69:0.31e0.32; midleg (femur:tibia:tarsus): 0.72e0.73:0.74e0.78:0.30e0.32/0.73e 0.74:0.75e0.77:0.34e0.36; hindleg (femur:tibia:tarsus): 1.12e1.13: 1.16e1.19:0.43e0.46/1.17e1.19:1.12e1.14:0.47e0.52. Specimen examined. [CNU] 4__, 3\\, Tottori Pref., Honshu, Japan, 26.vi.2015, on Mallotus japonicus, JG Kim; 1\, Sanghyoedong, Seoguipoesi, Jejuedo (Is.), Korea, 3.ix.2015, on M. japonicus, JG Kim; [CNU] 2__, 3\\, Jocheoneeub, Jejuesi, Jejuedo (Is.), Korea, 5.ix.2015, on Mallotus japonicus, JG Kim. Distribution. Korea, Japan. Host. Mallotus japonicus (Thunb.) (Euphorbiaceae). Acknowledgments This research was supported by a grant from the National Institute of Biological Resources (NIBR), funded by the Ministry of Environment (MOE) of the Republic of Korea (NIBR201501203),
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and was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT & Future Planning (NRFe 2014R1A1A1005338).
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