Research Article |
Corresponding author: Seunghwan Lee ( seung@snu.ac.kr ) Academic editor: Pavel Štys
© 2015 Minsuk Oh, Tomohide Yasunaga, Seunghwan Lee.
This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Citation:
Oh M, Yasunaga T, Lee S (2015) First record of the plant bug genus Paramiridius Miyamoto & Yasunaga (Heteroptera, Miridae, Mirinae) from Indochina, with descriptions of two new species from Laos. ZooKeys 546: 51-59. https://doi.org/10.3897/zookeys.546.6335
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The mirine plant bug genus Paramiridius, previously known only from a single Taiwanese species, is reported from Indochinese Laos for the first time and redefined. Two additional species, P. indochinensis and P. laomontanus, are described as new to science. The female genitalic structures of the genus are documented for the first time. Habitus illustrations, figures of male genitalia, and key are provided for all three known Paramiridius species.
Paramiridius , new species, taxonomy, key, Indochina, Laos, Heteroptera , Miridae , Mirinae , Mirini
The mirine plant bug genus Paramiridius was proposed by
During recent field investigations undertaken by Seoul National University, 21 specimens, we perceived as belonging to Paramiridius, were collected. Upon closer examination, we can confirm that these Lao specimens represent two undescribed species of Paramiridius, herein we describe them as new to science. The present discovery also represents a range extension of the genus in Indochina. Paramiridius is redefined and diagnosed, and a key to all known species is provided. The female genitalic structures are examined and figured for the first time.
All type specimens are deposited in the collection of Insect Biosystematics Laboratory, Research Institute for Agriculture and Life Science,
All measurements (mean and range) are in millimeters. Terminology of the male and female genitalia primarily follows
Paramiridius Miyamoto & Yasunaga, 1992: 93 (gen. n.), type species: Paramiridius tigrinus Miyamoto & Yasunaga, 1992: 94, original designation;
Paramiridius can be distinguished from other known mirine genera by the following combination of characters: moderate to rather large size; sparsely distributed vestiture; weakly shining, matte dorsum with noticeable dark pattern (yellow with dark stripes and maculae as in Fig.
Indochina (Laos), Taiwan.
Unknown; almost all available specimens were collected using UV light traps. Two females of P. laomontanus were found on Castanea sp. (Fagaceae).
The original authors (
The present work suggests Paramiridius is more probably related to Lygocoris Reuter, based on sharing the following characters: apically tuberculate phallotheca; presence of a single spicule and apically situated secondary gonopore on endosoma; and similar shape of female sclerotized rings and posterior wall. However, Paramiridius is readily distinguished from Lygocoris by the unique dark pattern on the dorsum which is nearly matte and glabrous, the different shape of the parameres, and the posterior wall of bursae lacking a lateral lobe (for principal diagnostic characters of Lygocoris, see
There are quite a few mirines superficially similar to Paramiridius. To demonstrate more reliable systematic position of the genus, further comprehensive revision is required, including the acquisition of DNA sequence data for representatives of all related genera, a long-run task far beyond the scope of this study.
1 | Basal two-third part of antennal segment II and almost entire scutellum yellowish brown; known only from Taiwan | tigrinus Miyamoto & Yasunaga |
– | Antennal segment II wholly infuscate, without pale portions; scutellum mesally with a dark stripe; known from Laos | 2 |
2 | Body elongate oval, subparallel-sided; dark, mesal stripe on scutellum broad and continuous from base to apex (Fig. |
indochinensis sp. n. |
– | Body nearly ovoid, short; dark, mesal stripe on scutellum narrow, obliterated at apical 1/2–1/3 (Fig. |
laomontanus sp. n. |
Recognized by the characters given in the key, and the tapered hypophysis of the right paramere (Fig.
Coloration: Body generally yellow; dorsum with black-striped patterns (Fig.
Structure and vestiture: As in generic description provided by
Male genitalia (Figs
Female genitalia (Figs
Measurements ♂/♀: Total body length 5.88/ 6.42–7.02; head width across eyes 1.09/ 1.13–1.17; vertex width 0.49/ 0.50–0.52; lengths of antennal segment I–IV 1.25, 3.43, 1.32, ?/ 1.24–1.26, 2.67–2.81, 1.71–1.76, 0.42–0.44; labial length 2.10/ 2.18–2.34; mesal pronotal length including collar 1.23/ 1.29–1.40; basal pronotal width 1.96/ 2.09–2.25; width across hemelytron 2.06/ 2.21–2.43; cuneal length 1.13/ 1.18–1.22; cuneal width 0.72/ 0.81–0.92; lengths of metafemur, tibia and tarsus 3.06, 4.21, 0.75/ 3.08–3.19, 4.38–4.56, 0.73–0.77.
Named for its occurrence in the Indochina.
Laos (Xiang Khoang Province).
Holotype ♂: LAOS: Xiang Khoang Prov., Kham Dist., Phosabous National Protected Area, Namchack Village, [N19°50'57" E103°47'51", 670m alt.], light trap, 2 May, 2015, Oh, 1♂ (
Recognized by the characters in the key, and the modified shape of the parameres (Fig.
Coloration: Body yellow, often tinged with green, with black maculae and stripes. Head yellow, with paired, symmetrical, dark maculae on vertex; frons with a black stripe medially; clypeus darkened basally. Antenna dark brown to black; extreme bases of segments II and III white. Labium dark brown, except for yellowish segment II. Pronotum greenish yellow, with three pairs of black stripes not reaching pale posterior margin of pronotum. Mesoscutum and scutellum yellow, with symmetrical, dark patterns. Hemelytron pale green or greenish yellow, with variable black patterns as in Fig.
Structure and vestiture: Body rather ovoid; dorsal surface with sparsely distributed, simple, pale, short setae. Eye small, contiguous to pronotal collar; vertex wide. Antenna generally slender. Labium comparatively broad, extending to apex of mesocoxa. Pronotum rather tumid, not carinate laterally. Hemelytron shallowly and roughly punctate, almost glabrous.
Male genitalia (Figs
Female genitalia (Figs
Measurements ♂/♀: Total body length 5.29–5.88/ 5.98–6.53; head width across eyes 1.16–1.26/ 1.22–1.30; vertex width 0.55–0.62/ 0.58–0.66; lengths of antennal segment I–IV 0.78–0.82, 2.10–2.15, 0.97–1.15, 0.66–0.72/ 0.81–0.82, 2.12–2.26, 1.18–1.28, 0.67; labial length 1.49–1.69/ 1.63–1.78; mesal pronotal length including collar 1.17–1.27/ 1.24–1.39; basal pronotal width 1.93–2.14/ 2.13–2.29; width across hemelytron 2.11–2.34/ 2.46–2.74; cuneal length 1.10–1.21/ 1.08–1.20; cuneal width 0.73–0.84/ 0.79–0.93; lengths of metafemur, tibia and tarsus 2.02–2.28, 2.83–3.15, 0.71–0.77/ 2.20–2.57, 3.08–3.37, 0.73–0.77.
Named for its occurrence in mountain of Laos.
Laos (Xiang Khoang Province).
Holotype ♂: LAOS: Xiang Khoang Prov., Kham Dist., Phosabous National Protected Area, Namchack village, [N19°50'57", E103°47'51", 670m alt.], light trap, 2 May, 2015, Oh, 1♂ (
Paramiridius tigrinus Miyamoto & Yasunaga, 1992: 94 (sp. n.);
Recognized by the characters mentioned in the key, and the broader yellow posterior margin of the pronotum, the slender, blunt-tipped hypophysis of the right paramere, and the straight endosomal spicule (See
Taiwan.
This work was supported by the