Morphological evolution and diversification of enigmatic genital structures in Dipsocoromorpha

• Project/Area Number: 16K07502
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Biodiversity/Systematics
• Research Institution: Tokushima Prefectural Museum
• Principal Investigator: Yamada Kazutaka 徳島県立博物館, 自然課, 主任 (20463474)
• Research Collaborator: Weirauch Christiane ; Tsai Jing-Fu
• Project Period (FY): 2016-04-01 – 2019-03-31
• Project Status: Completed (Fiscal Year 2018)
• Budget Amount: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000); Fiscal Year 2018: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000); Fiscal Year 2017: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000); Fiscal Year 2016: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
• Keywords: 交尾器形態 / 交尾行動 / ムクゲカメムシ / 交尾器 / 機能形態

Outline of Final Research Achievements

Mating behavior of the three dipsocoromorphan families (Dipsocoridae, Ceratocombidae, Schizopteridae) were succeeded to confirm based on the field observations and laboratory culture. The mating of Schizopteridae and Dipsocoridae is observed for the first time. Their mating behavior were almost the same that of other heteropterans (e.g., some Cimicomorphans). In Dipsocoridae, the male jumped onto the female’s dorsum and inserted his abdomen to sandwich her dorso-ventral surfaces of posterior part of abdomen from the right side by his pregenital abdominal appendages. The local thickenings in females are found on their laterotergite VII. The function of laterotergite VIII is different in the three dipsocoromorphan families. The length of male intromittent organ (phallus or vesica) may correlated with the length of female spermathecal duct.

Academic Significance and Societal Importance of the Research Achievements

これまでほとんど知られていなかったムクゲカメムシ下目の交尾行動を初めて観察し、観察困難であった本下目の雌雄交尾器を機能的側面から探ることができた。本研究により、本下目の複雑で多様な交尾器が機械的生殖隔離機構の実態を検証する好適な材料となる可能性が示唆された。

Research Products

• [Journal Article] Redefinition of two little known mirine plant bug genera Babacoris and Paramiridius (Hemiptera: Heteroptera: Miridae: Mirinae) (2018)
  • Author(s): Yasunaga, T., Tsai, J. F. & Yamada, K.
  • Journal Title: Zootaxa Volume: 4425 Issue: 2 Pages: 327-341
  • DOI: 10.11646/zootaxa.4425.2.8
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Annotated catalogue of the flower bugs from India (Heteroptera: Anthocoridae, Lasiochilidae) (2018)
  • Author(s): Ballal, C. R., Akbar, S. A., Yamada, K., Wachkoo, A. A. & Varshney, R.
  • Journal Title: Acta Entomologica Musei Nationalis Pragae Volume: 58 Issue: 1 Pages: 207-226
  • DOI: 10.2478/aemnp-2018-0018
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Aphrastomedes anthocoroides, a remarkable new cimicomorphan genus and species (Hemiptera: Heteroptera) from Upper Cretaceous Burmese amber (2018)
  • Author(s): Yamada, K., Yamamoto, S. & Takahashi, Y.
  • Journal Title: Cretaceous Research Volume: 84 Pages: 442-450
  • DOI: 10.1016/j.cretres.2017.12.007
  • Peer Reviewed
• [Journal Article] Taxonomic review of the plant bug subfamily Isometopinae for Taiwan and Japanese Southwest Islands, with descriptions of new taxa (Hemiptera: Heteroptera: Miridae: Isometopinae) (2017)
  • Author(s): Yasunaga, T., Yamada, K. & Tsai, J. F.
  • Journal Title: Zootaxa Volume: 4365 Issue: 4 Pages: 421-439
  • DOI: 10.11646/zootaxa.4365.4.3
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Two new species of the mirine plant bug genus Adelphocorisella (Insecta: Heteroptera: Miridae: Mirinae: Mirini) from central Thailand (2016)
  • Author(s): Yasunaga, T., Shishido, T. & Yamada, K.
  • Journal Title: Raffles Bulletin of Zoology Volume: 64 Pages: 250-256
  • Peer Reviewed / Open Access
• [Journal Article] Review of the plant bug genus Fingulus Distant in the Indochina (Hemiptera: Heteroptera: Miridae: Deraeocorini), with descriptions of two new species (2016)
  • Author(s): Yasunaga, T., Yamada, K., Duanthisan, J., & Artchawakom, T.
  • Journal Title: Zootaxa Volume: 4154 Issue: 5 Pages: 581-588
  • DOI: 10.11646/zootaxa.4154.5.7
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] First records of two flower bug genera from Myanmar (Hemiptera: Heteroptera: Anthocoridae: Anthocorinae: Oriini), with description of a new species of Bilia Distant (2016)
  • Author(s): Yasunaga, T., Yamada, K., Soe, Z. & Naing, S. S.
  • Journal Title: Zootaxa Volume: 4158 Issue: 4 Pages: 544-556
  • DOI: 10.11646/zootaxa.4158.4.6
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Pleistocene sea level fluctuation and host plant habitat requirement influenced the historical phylogeography of the invasive species Amphiareus obscuriceps (Hemiptera: Anthocoridae) in its native range (2016)
  • Author(s): Zhang, D., Zhen, Y., Yamada, K., Zhen, Y., Zheng, C. & Bu, W.
  • Journal Title: BMC Evolutionary Biology Volume: 16 Issue: 1 Pages: 174-174
  • DOI: 10.1186/s12862-016-0748-3
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Further records of the plant bug subfamily Isometopinae from Thailand (Heteroptera: Miridae), with descriptions of three new species (2016)
  • Author(s): Yasunaga, T., Duanthisan, J., Yamada, K. & Artchawakom, T.
  • Journal Title: Tijdschrift voor Entomologie Volume: 159 Issue: 2 Pages: 89-96
  • DOI: 10.1163/22119434-15902003
  • Peer Reviewed / Int'l Joint Research