Homotropus sundevalli ( Holmgren, 1858 )

Morishita, Shunsuke & Watanabe, Kyohei, 2025, Review of the genera Homotropus Förster and Syrphoctonus Förster (Hymenoptera, Ichneumonidae, Diplazontinae) from Japan, Zootaxa 5588 (1), pp. 49-76 : 70-72

publication ID	https://doi.org/10.11646/zootaxa.5588.1.2
publication LSID	lsid:zoobank.org:pub:D6A24D15-616C-4BEB-B7F9-132180AE0C12
persistent identifier	https://treatment.plazi.org/id/03D487FD-FF8D-8B7A-1BBA-24DA1DD0F8F9
treatment provided by	Plazi (2025-02-19 22:05:08, last updated by Guilherme 2025-02-25 16:28:27)
scientific name	Homotropus sundevalli ( Holmgren, 1858 )
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Homotropus sundevalli ( Holmgren, 1858)

( Figs 13 A–E View FIGURE 13 )

Bassus sundevalli Holmgren, 1858: 364 .

Bassus scabrosus Desvignes, 1862: 217 .

Syrphoctonus enizemopsis Uchida, 1957: 255 View in CoL . Syn. nov.

Homotropus enizemopsis : Dasch, 1964: 181.

Homotropus sundevalli : Dasch, 1964: 181.

Homotropus enizemopsis : Townes et al., 1965: 403.

Homotropus sundevalli : Klopfstein, 2014: 74.

Specimens examined. JAPAN: [Honshu] 1M, Gunma Pref., Tsumagoi Vil., Kanbara, Takamine-kogen , 3. IX. 2015, K. Watanabe leg. ( KPMNH) ; 1M, Niigata Pref., Nagaoka City, Suyoshi, Mt. Nokogiriyama , 7. VI. 2014, S. Shimizu leg. ( KPMNH) ; 1M, Toyama Pref., Toyama City, Arimine, Inonedani , 15–22 IX 2009, M. Watanabe leg. ( MT) ( KPMNH) ; 1M, Nagano Pref., Otaki Vil., Mt. Ontakesan, Hakkaisan , 5 IX 2022, S. Morishita leg. ( TMNH) ; 1F (holotype), Gifu Pref., Mt. Norikura , 29. VII. 1954, Townes family leg. ( AEI) ; 1M, Gifu Pref., Hirayu , 12. X. 1982, K. Konishi leg. ( NARO) . AUSTRIA: 1F (det. E. Diller), Oberosterreich, Stallburgalm , 4. VIII. 1986, M. Schwarz leg. ( ZSM) . GERMANY: 1M (det. E. Diller), Goslar , 18. VIII. 1948, E. Bauer leg. ( ZSM) .

Diagnosis. See Klopfstein (2014b).

Distribution. Japan (Honshu). Outside Japan, this species is widely distributed in Palearctic region ( Yu et al. 2016).

Bionomics. Host unknown in Japan. Outside of Japan, Epistrophe grossulariae (Meigen 1822) ( Diptera , Syrphidae ) has been recorded as a host ( Rotheray 1986; Thirion 1994). In Japan, adults were collected in broadleaved forests.

Remarks. This is the first record of this species from Japan. Japanese specimens share similar character states with the diagnosis of European specimens proposed by Klopfstein (2014b), while female Japanese specimen (holotype of H. enizemopsis ) differs from European specimens in the following character states: fore coxa entirely black (black with yellow apex in European specimens); mid and hind trochanters, trochantelli, and femora entirely black (orange in European specimens); hind tibia entirely black (yellow or orange with darknened apex in European specimens). However, as no significant differences were found in other character states, we conclude that the observed variation is intraspecific variation within a single species.

References

Dasch, C. E. (1964) Ichneumon-flies of America north of Mexico: 5. Subfamily Diplazontinae. Memoirs of the American Entomological Institute, No. 3, 1-304.

Desvignes, T. (1862) Description of new species of the genus Bassus. Transactions of the Entomological Society of London, Series 3, 1, 215-222. https://doi.org/10.1111/j.1365-2311.1862.tb00598.x

Holmgren, A. E. (1858) Forsok till uppstallning och beskrifning af de isverige funna Tryphonider (Monographia Tryphonidum Sueciae). Kongliga Svenska Ventenskapsakademiens Handlingar Neue Folge, 1 (2), 305-394.

Klopfstein, S. (2014 b) Revision of the Western Palaearctic Diplazontinae (Hymenoptera, Ichneumonidae). Zootaxa, 3801 (1), 5-125. https://doi.org/10.11646/zootaxa.3801.1.1

Rotheray, G. F. (1986) The larva and puparium of Epistrophe grossulariae (Meigen) (Dipt., Syrphidae) with a note on overwintering behaviour. Entomologist's Monthly Magazine, 122, 215-218.

Thirion, C. (1994) Les Diplazontinae (Hymenoptera Ichneumonidae) en Belgique et dans les regions limitrophes. Deuxieme contribution. Notes Fauniques de Gembloux, 29, 3-100.

Townes, H., Momoi, S. & Townes, M. (1965) A catalogue and reclassification of the eastern Palearctic Ichneumonidae. Memoirs of the American Entomological Institute, 5, 1-661.

Uchida, T. (1957) Beitraege zur kenntnis der Diplazoninen fauna japans und seiner umgegenden (Hymenoptera, Ichneumonodae). Journal of Faculty Agricultural Hokkaido University, Sapporo, 50, 226-265.

Yu, D. S., van Achterberg, C. & Horstmann, K. (2016) Taxapad 2016. Ichneumonoidea 2015. Database on flash-drive. Available from: http://www.taxapad.com (accessed 26 August 2024)

Figures

FIGURE 13. Homotropus sundevalli (Holmgren, 1858), female (A, B) and male (C–E)―A, C: lateral habitus; B, D: head, frontal view; E: propodeum, dorsal view.

Abbreviations

VI	Mykotektet, National Veterinary Institute
MT	Mus. Tinro, Vladyvostok
TMNH	Tianjin Museum of Natural History
AEI	American Entomological Institute
ZSM	Bavarian State Collection of Zoology