A new fossil species of Trentepohlia (Diptera, Limoniidae) from the Dominican Miocene Author Mederos, Jorge Museu de Ciències Naturals de Barcelona, Passeig Picasso s / n, 08003, Barcelona (SPAIN) mederos @ gmail. com (corresponding author) mederos@gmail.com Author Wang, Yinan Yinan, Box 2882, 1301 S Fern St, Arlington VA 22202 (USA) Author Duque-Valero, Susana Museu de Ciències Naturals de Barcelona, Passeig Picasso s / n, 08003, Barcelona (SPAIN) Author Campeny, Marc Museu de Ciències Naturals de Barcelona, Passeig Picasso s / n, 08003, Barcelona (SPAIN) text Zoosystema 2020 2020-11-24 42 29 583 592 journal article 9472 10.5252/zoosystema2020v42a29 006bc912-940f-438c-942a-23cd5ad80a26 1638-9387 4298722 urn:lsid:zoobank.org:pub:15ECF9C4-32B5-46C7-96E4-790649C5B1B8

TABLE 2. — Physical properties of common amber with the calculated physical properties of the samples studied.Notes: 1, standard physical properties of common amber (Schumann 2001); 2, calculated in hydrostatic balance applying the principle of Archimedes and extrapolating result with an average of 5 measurement.

		Specific			Refractive Optical				Fluorescence
Sample	Hardness Gravity 2 Fracture			Colour	Index	CharacterAnisotropy Transparency (long wave)
Amber1	2-2.5	1.050-	conchoidal yellow,		1.539 to	isotropic	anomaly	transparent	common moderate
		1.100		orange,	1.545			to opaque	to strong bluish-white
				brown, blue					to yellow-green
MZB 2019-0707 2 to 3		1.040	conchoidal pale yellow		1.540	isotropic	anomaly	transparent	very shallow, from weak
(holotype)									to moderate intensity
									in white-bluish colour.
MZB 2019-0716 2 to 3		1.044	conchoidal pale yellow		1.542	isotropic	anomaly	transparent	very shallow, from weak
									to moderate intensity
									in white-bluish colour.
MZB 2019-0719 2 to 3		1.047	conchoidal yellow		1.539	isotropic	anomaly	transparent	very shallow, from weak
									to moderate intensity
									in white-bluish colour.
MZB 2019-0720 2 to 3		1.050	conchoidal orange		1.540	isotropic	anomaly	transparent	very shallow, from weak
									to moderate intensity
									in white-bluish colour.
MZB 2019-0723 2 to 3		1.052	conchoidal yellow		1.540	isotropic	anomaly	transparent	not present.
MZB 2019-0726 2 to 3		1.051	conchoidal yellow		1.542	isotropic	anomaly	transparent	very shallow, from weak
									to moderate intensity
									in white-bluish colour.