Elephantomyia brevipalpa

Sunday, 23 August 2015

Elephantomyia (Elephantomyia) brevipalpa is AN extinct species of dipterous insect within the family Limoniidae. The species is entirely noted from the center Eocene Baltic amber deposits within the Baltic region of Europe. The species is one amongst six represented from Baltic amber.

Elephantomyia brevipalpa Temporal range: Middle Eocene PreЄ Є O S D C P T J K Pg N
E. (E.) brevipalpa female
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Insecta
Order:	Diptera
Family:	Limoniidae
Genus:	Elephantomyia
Species:	†E. brevipalpa
Binomial name
Elephantomyia brevipalpa (Loew, 1850)
Synonyms
Toxorhina brevipalpa Limnobiorhynchus brevipalpa

History and classification

Elephantomyia (Elephantomyia) brevipalpa is thought from the example specimen, assortment variety MB.J.337, together with 2 more adults that area unit preserved as inclusions in clear Baltic amber. As of 2015, 2 of the amber specimens were enclosed within the collections of the University of Göttingen, whereas the third was housed at the Polish Academy of Sciences. Baltic amber is recovered from fossil bearing rocks within the Baltic Sea region of Europe. Estimates of the age date between thirty seven million years recent, for the youngest sediments and forty eight million years recent. This age vary straddles the center epoch, starting from close to the start of the Lutetian to the start of the Pribonian. E. brevipalpa is one among six dipteran species within the genus Elephantomyia represented from the Baltic amber, the others being E. baltica, E. bozenae, E. irinae, E. longirostris, and E. pulchella. All six species area unit placed into the Elephantomyia taxon Elephantomyia supported the shortage of leg bone spurs and by many aspects of the wing morphology.

The fossil was initial studied by animal scientist Arminius Loew of the Deutschland, along with his kind description of the new species being revealed in 1851 as Toxorhina brevipalpa, although he revealed the nomen nudum name a year earlier. The species was emotional to the genus Limnobiorhynchus in 1860 by Carl Robert Osten-Sacken, and later emotional by Osten-Sacken once more, now to the genus Elephantomyia. The fossil was reexamined and therefore the species redescribed in 2015 by paleoentomologist Iwona Kania of the University of Rzeszów, United Nations agency examined the example and therefore the 2 further specimens.

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Description

The E. brevipalpa example and one in all the extra specimens ar preserved males, whereas the third specimen could be a feminine that's some five.1 mm (0.20 in) long, not together with stage. the pinnacle contains a rostrum that's a pair of.86 mm (0.113 in) long, as 0.5 the length of the fore-wing and also the abdomen. stage has notably short palpus at the tip.every palpus consists of 4 segments, totaling less then 0.5 the length of the glossal lobes on stage. The third section is associate degree elongate cylinders whereas the fourth is extremely short. The antennae ar little, composed of associate degree elongated scape and widened peduncle. because the flagellomeres progress from the bottom to the tip of the antennae they modify from squat and huddled along to elongated. The basal flagellomeres don't have any setae, whereas 3 setae ar found on flagellomeres six and seven. Flagellomeres eight through eleven have 2 elongated setae, and also the top flagellomere has four terribly elongate setae. The wings ar four.68 mm (0.184 in) long with a pale brown pterostigma that's oval in form and any towards the wing base then in alternative Baltic amber species. The Rs vein, as selected by the Comstock–Needham system, is as regarding one third the length of the connected R2+3+4 vein.