taxonID	type	description	language	source
03EB87B7FFF2DF4051D7AEB9FE89FAFD.taxon	type_taxon	Type species. Eltxo cretaceus Arillo & Nel, 2000 Emended diagnosis. Male and female. Cecidomyiid fly with tarsomere 1 longer than 2. Antennae with 13 flagellomeres. Ocelli absent. Wing venation reduced, without vein M or with short and evanescent vein M. Vein CuA unforked. C extending beyond Rs, far apex of wing. R 1 joining C at half length of wing. Rs joining C beyond wing apex.	en	PEÑALVER, ENRIQUE, ARILLO, ANTONIO, NEL, ANDRÉ (2022): A review of the Cretaceous genus Eltxo (Diptera: Cecidomyiidae) with description of the new species Eltxo grimaldii from El Soplao amber. Palaeoentomology 5 (5): 461-467, DOI: 10.11646/palaeoentomology.5.5.7, URL: http://dx.doi.org/10.11646/palaeoentomology.5.5.7
03EB87B7FFF2DF4051D7A898FB1BF9F9.taxon	description	(Figs 1, 2) LSID: urn: lsid: zoobank. org: act: 8 A 273 D 67 - 2 B 1 B- 4798 - A 67 B- 5 D 2 E 8 AFE 245 B	en	PEÑALVER, ENRIQUE, ARILLO, ANTONIO, NEL, ANDRÉ (2022): A review of the Cretaceous genus Eltxo (Diptera: Cecidomyiidae) with description of the new species Eltxo grimaldii from El Soplao amber. Palaeoentomology 5 (5): 461-467, DOI: 10.11646/palaeoentomology.5.5.7, URL: http://dx.doi.org/10.11646/palaeoentomology.5.5.7
03EB87B7FFF2DF4051D7A898FB1BF9F9.taxon	materials_examined	Holotype. Specimen ES- 07 - 40, female, housed at the Institutional Collection from the El Soplao Cave (Government of Cantabria), Celis, Cantabria, Northern Spain. It is virtually complete but lacking the apices of the two antennae and distal parts of all the legs except one of the metathoracic legs, due to the limits of the amber fragment that contains it. The specimen is in a small fragment of amber, 4 × 3 × 1 mm in size, and embedded in a regular prism of epoxy resin, 23 × 9 × 1 mm in size, for optimal viewing and curation. No syninclusions were detected.	en	PEÑALVER, ENRIQUE, ARILLO, ANTONIO, NEL, ANDRÉ (2022): A review of the Cretaceous genus Eltxo (Diptera: Cecidomyiidae) with description of the new species Eltxo grimaldii from El Soplao amber. Palaeoentomology 5 (5): 461-467, DOI: 10.11646/palaeoentomology.5.5.7, URL: http://dx.doi.org/10.11646/palaeoentomology.5.5.7
03EB87B7FFF2DF4051D7A898FB1BF9F9.taxon	etymology	Etymology. Honoring Dr David Grimaldi (AMNH), for his relevant contributions on fossil insects and amber.	en	PEÑALVER, ENRIQUE, ARILLO, ANTONIO, NEL, ANDRÉ (2022): A review of the Cretaceous genus Eltxo (Diptera: Cecidomyiidae) with description of the new species Eltxo grimaldii from El Soplao amber. Palaeoentomology 5 (5): 461-467, DOI: 10.11646/palaeoentomology.5.5.7, URL: http://dx.doi.org/10.11646/palaeoentomology.5.5.7
03EB87B7FFF2DF4051D7A898FB1BF9F9.taxon	diagnosis	Diagnosis. Female. The new species differs from the only species described, Eltxo cretaceus (which was based on a unique male), by the following features: distal section of R 1 vein elongate, vein M present in a short basal part and evanescent, arculus vein contacting M very basal and CuA vein contacting wing margin distad level of basal section of Rs. Locality and horizon. Middle Albian amber outcrop of Rábago-El Soplao (near Rábago village, Cantabria, northern Spain), Peñosas Fm. (Najarro et al., 2009, 2010).	en	PEÑALVER, ENRIQUE, ARILLO, ANTONIO, NEL, ANDRÉ (2022): A review of the Cretaceous genus Eltxo (Diptera: Cecidomyiidae) with description of the new species Eltxo grimaldii from El Soplao amber. Palaeoentomology 5 (5): 461-467, DOI: 10.11646/palaeoentomology.5.5.7, URL: http://dx.doi.org/10.11646/palaeoentomology.5.5.7
03EB87B7FFF2DF4051D7A898FB1BF9F9.taxon	description	Description. Female (Figs 1, 2). Body length ca. 1.1 mm. Antennae with only scape, pedicel and 4 – 5 flagellomeres preserved due to limits of amber fragment (Figs 1 D, 2 A): preservation of flagellomeres preventing identification of potential sensoria. Ocelli absent. Palpi three-segmented and elongate (Figs 1 E, 2 B), with palpomeres subequal, distal palpomere slightly longer than others, palpomeres 2.5 times longer than wide; other mouthpart structures obscure. Wing 1.11 mm long, 0.45 mm wide. Wing venation reduced (Figs 1 F, 2 C). C extending beyond Rs with a clear end. Apex of R 1 at half wing lenght. Apex of Rs meeting C just beyond wing apex. Sc preserved. Basal section of Rs slightly evanescent. Vein M present in a short basal part and evanescent. Vein CuA unforked and evanescent at its apex; apex of CuA well distad level of basal section of Rs. Arculus present, with distal half evanescent, contacting M very close to separation of M and CuA. Wings with dense microtrichia and sparse macrotrichia. Wing margin with setae in costal margin and macrotrichia in posterior margin (but only very few of them still visible) (Fig. 1 B, C). Distal portions of legs not preserved due to limits of the amber fragment, except to a complete metathoracic leg, which is long and setose, with five tarsomeres; tarsomere 1 longer than 2 (Figs 1 H, 2 D). All tibiae lacking tibial spurs. Pretarsal claws short and with a small basal prolongation with rounded apex; empodium insconspicuous (Fig. 1 G). Abdomen 0.56 mm long (up to the cerci apices). Genitalia obscure, but long ovipositor (0.20 mm); contour of the cerci well visible in lateral view.	en	PEÑALVER, ENRIQUE, ARILLO, ANTONIO, NEL, ANDRÉ (2022): A review of the Cretaceous genus Eltxo (Diptera: Cecidomyiidae) with description of the new species Eltxo grimaldii from El Soplao amber. Palaeoentomology 5 (5): 461-467, DOI: 10.11646/palaeoentomology.5.5.7, URL: http://dx.doi.org/10.11646/palaeoentomology.5.5.7
