Macrosiagon grombczewskii ( Semenov, 1891 )

Batelka, Jan, 2011, Contribution to the synonymies, distributions, and bionomics of the Old World species of Macrosiagon (Coleoptera: Ripiphoridae), Acta Entomologica Musei Nationalis Pragae 51 (2), pp. 587-626 : 600-608

publication ID	https://doi.org/10.5281/zenodo.5329411
DOI	https://doi.org/10.5281/zenodo.5397319
persistent identifier	https://treatment.plazi.org/id/03D287D8-FFCD-FF95-FE95-1067FC3BFD27
treatment provided by	Felipe (2021-08-28 15:07:08, last updated by Plazi 2023-11-05 07:38:57)
scientific name	Macrosiagon grombczewskii ( Semenov, 1891 )
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Macrosiagon grombczewskii ( Semenov, 1891)

( Figs. 28–30 View Figs 25–33. 25–27 )

Emenadia grombczewskii Semenov, 1891: 377 . Type locality: Turkestan mer. [ Tajikistan], Wachia.

Macrosiagon grombczewskii: BEDEL (1895) : 185 (new combination).

Type material. HOLOTYPE: 1 ♀ (depostition see below), ‘Vachija. 3075 m / 27. VII. 89 / Grombczewskij [hw] // Type [p] // Emenadia / grombczewskii m. / ♀ un. typ. ex 5.X.89 [hw]’.

Type deposition. The species is known only from its original desription based on the female holotype. YABLOKOV- KHNZORYAN (1976) mentioned in his key to the Palaearctic Macrosiagon that he failed to find this specimen. It is deposited in Zoological Institute of Russian Academy of Science, St.- Petersburg from where it was borrowed by Zachary Falin (Kansas) in 1999.

Remarks. Because of unavailability of the type, M. grombczewskii was listed in ‘ Macrosiagon - nomina dubia’ in BATELKA (2008a). Thanks to detailed images of the type taken by Michael Engel (Kansas) I am now able to offer several remarks regarding the systematic placement and validity of this peculiar taxon.

Macrosiagon grombczewskii belongs to the M. bifasciata species group as it is defined in this paper. MT 2 is shortened and robust, flattened dorsally as in M. bipunctata , but the medial lobe of the pronotal disc is smooth and without an elevation. An identical combination of both characters also occurs in the African M. caffra , which belongs to the same species group. Males and more females of M. grombczewskii are needed to prove the stability of these and other putative specific characters (e.g. carina and black spots on the pronotal disc) mentioned both by SEMENOV (1891) and YABLOKOV- KHNZORYAN (1976). Until then I prefer to consider M. grombczewskii as a valid species.

Distribution. This species remains known only from its type locality in Tajikistan.

References

ALLUAUD C. 1902: Note sur les Rhipiphorides de Madagascar, avec la diagnose d'une espece nouvelle de Guinee [Col.]. Bulletin de la Societe Entomologique de France 1902: 322 - 324.

BATELKA J. 2008 a: Family Ripiphoridae Gemminger & Harold, 1870. Pp. 29, 73 - 78. In: LOBL I. & SMETANA A. (eds.): Catalogue of Palaearctic Coleoptera, Volume 5. Tenebrionoidea. Apollo Books, Stenstrup, 670 pp.

BEDEL E. M. L. 1895: II. - Synopsis des Macrosiagon mediterraneens. Pp. 184 - 192. In: CHOBAUT A. & BEDEL E. M. L.: Etude sur les Macrosiagon Hentz (Emenadia Lap. - Cast.) de la region mediterraneenne. L'Abeille, Journal d'Entomologie 28: 181 - 192.

BLANCHARD E. 1846: Insectes coleopteres plate 12. In: HOMBRON J. B. & JACQUINOT H. (eds.): Atlas d'Histoire naturelle zoologie par MM. Hombron et Jacquinot, chirurgiens de l'expedition, in Voyage au pole sud et dans l'Oceanie sur les corvettes l'Astrolabe et la Zelee execute par ordre du roi pendant les annees 1837 - 1838 - 1839 - 1840 sous le commandement de M. Dumont-d'Urville, capitaine de Vaisseau; commandant de La Zelee. Vingt-unieme Livraison. Oiseaux pl. 25 bis; Insectes coleopteres pls. 8, 10, 12, 15. Gide et Cie, Paris.

FABRICIUS J. C. 1787: Mantissa insectorum sistens eorum species nuper detectas adiectis characteribus genericis, differentiis specifics, emendationibus, observationibus. Tom. I. C. G. Proft, Hafnia, xx + 348 pp.

FAHRAEUS O. I. VON. 1870: Coleoptera Caffrariae, annis 1838 - 1854 a J. A. Wahlberg collecta. Heteromera. Ofversigt af Kongliga Svenska Vetenskaps-Akademiens Forhandlingar 27: 234 - 358.

GERSTAECKER A. 1855: Rhipiphoridum Coleopterorum familiae dispositio systematica. F. Nicolai, Berolini, 36 pp, 1 pl.

PIC M. 1913: Coleopteres malacodermes et heteromeres du Congo Belge. Revue de Zoologie Africaine 3: 157 - 165.

PIC M. 1929: Nouveaux Coleopteres, principalement du Congo Belge. Revue de Zoologie et de Botanique Africaines 18: 263 - 270.

SCHAUFUSS L. W. 1872: Beschreibung einiger Kafer. Nunquam Otiosus. Zoologische Mittheilungen 2: 275 - 278.

SCHILDER F. A. 1923: Rhipiphoriden-Studien. Deutsche Entomologische Zeitschift 1923: 331 - 334.

SEMENOV A. 1891: Diagnoses Coleopterorum novorum ex Asia Centrali et Orientali. Horae Societatis Entomologicae Rossicae 25: 262 - 382.

WATERHOUSE C. O. 1883: Descriptions of new species of Coleoptera belonging to the Rhipiphoridae. Annals and Magazine of Natural History, Series 5 11: 279 - 281.

Figures

Figs 25–33. 25–27 – Macrosiagon callewaerti Pic, 1950; holotype. (25 – habitus dorsally; 26 – head frontally; 27 – metatarsomeres dorsally). 28–30 – Macrosiagon grombczewskii (Semenov, 1891), holotype (photos M. Engel 2010). 31–33 – Macrosiagon humeralis Pic, 1929. (31 – syntype; 32–33 – male from Tanzania, head frontally and metatarsomeres dorsally).