Myanmymar
| Myanmymar Temporal range:Cenomanian,
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|---|---|
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| FemaleMyanmymar aresconoidesinamber | |
Scientific classification
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Hymenoptera |
| Family: | Mymaridae |
| Genus: | †Myanmymar Huber,2011 |
| Species: | †M. aresconoides
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| Binomial name | |
| †Myanmymar aresconoides Huber, 2011
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Myanmymaris anextinctgenusoffairyflypreserved inBurmese amberfromMyanmar.It has only onespecies,Myanmymar aresconoides.It is dated to the earliest part of theCenomanianstage of theLate Cretaceous,around 99 million years old. As of 2011, it is the oldest known fossilmymarid.
Discovery and geologic time range[edit]
Myanmymar aresconoideswas described byJohn T. HuberandGeorge Poinar Jr.from a specimen of a female embedded inBurmeseamber. The amber was recovered in 2001 from theNoije Bum 2001 Summit Site,a fossil amber mine inHukawng Valley,Kachin Stateof Myanmar. The site is dated to theAlbian-Cenomanian(97 to 110 million years ago) of theEarly Cretaceousepoch. As of 2011, this makesMyanmymar aresconoidesthe oldest known fossil mymarid recovered.[1]
Taxonomy[edit]
Myanmymar aresconoidesis theonly speciesbelonging to the genusMyanmymar.It belongs to thefamilyof fairyfliesMymaridaeof thechalcid waspsuperfamilyChalcidoidea.[1]
Thegeneric nameMyanmymaris derived from aeuphoniouscombination of "Myanmar" andGreekμῶμος (mōmos,"spot" or "blot" ). Thespecific namemeans "resemblingArescon",fromArescon(anextantgenus of fairyfly) and Greek-εἶδος(eidos,"like", "resembling" ).[1]
Description[edit]
Like other fairyflies,M. aresconoidesis a tinywasp.The entire body length of the specimen is about half amillimeter,535 μm (0.0211 in). The head measures about 120 μm (0.0047 in) and have moderately sized eyes. Theantennaehave eight segments in thefunicleand two on club-like tip (clava). Themaxillary palpshave three segments.[1]
Themesosoma(middle part of the body) is 200 μm (0.0079 in) long. It has narrowforewings,with wing venation extending up to two-thirds of the length and a rounded lobe at the base. On the margins are numerous long bristle-like projections (marginal setae), the longest of which is about twice the greatest width of the wing. Thehindwingsare also narrow with parallel sides. Their marginal setae are about seven times the width of the wing. Both wings do not possessmicrotrichia(small irregularly scattered hairs), except for two sparse rows beyond the venation of the forewings.[1]
The legs have longtarsiwith five segments. Thetibiais not clearly visible but is assumed to be about the same length as the tarsi.[1]
Themetasomais longer than the mesosoma, at 225 μm (0.0089 in). Theovipositoris 218 μm (0.0086 in) long, with the sheath slightly extending over the tip of the metasoma.[1]
As the specific name suggests,M. aresconoidesis very similar to the extant genusAresconin wing shape and venation. Only three other modern mymarid genera (Boudiennyia,Eustochomorpha,andBorneomymar) share all theM. aresconoidescharacteristics of having forewing venation longer than half the wing length, five segments on the tarsi, and eight segments on the funicles.M. aresconoidesis also unique among fairyflies in having three distinct segments on the palpi. In contrast, all modern mymarids have unsegmented palpi.[1]
Another specimen of a possible male of the species was also discovered. It is 445 μm (0.0175 in) long, with a head 148 μm (0.0058 in) wide. However, it is impossible to ascertain if they belong to the same species due to the poor condition of the second specimen.[1]
See also[edit]
References[edit]
- ^abcdefghiGeorge Poinar Jr. & John T. Huber (2011). "A new genus of fossil Mymaridae (Hymenoptera) from Cretaceous amber and key to Cretaceous mymarid genera". In D.E. Shcherbakov; M.S. Engel & M.J. Sharkey (eds.).Advances in the Systematics of Fossil and Modern Insects: Honouring Alexandr Rasnitsyn.Pensoft. pp. 461–472.doi:10.3897/zookeys.130.1241.PMC3260775.PMID22259293.
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External links[edit]
- Myanmymar aresconoideson Species-ID