taxonID	type	description	language	source
039F87CBF43AFFFDFF4AFEFAFD212C7D.taxon	etymology	Etymology. The specific epithet is formed from the Latin adamas (diamond), referring to the diamond (lozenge) - like scutellum.	en	Chen, Xin-Yu, Zhang, Hua-Chuan (2020): A new fossil record of Lymexylidae (Insecta: Coleoptera) from mid-Cretaceous amber of northern Myanmar. Zootaxa 4878 (1): 195-200, DOI: 10.11646/zootaxa.4878.1.11
039F87CBF43AFFFDFF4AFEFAFD212C7D.taxon	type_taxon	Type Species. † Adamas hukawngensis sp. nov.	en	Chen, Xin-Yu, Zhang, Hua-Chuan (2020): A new fossil record of Lymexylidae (Insecta: Coleoptera) from mid-Cretaceous amber of northern Myanmar. Zootaxa 4878 (1): 195-200, DOI: 10.11646/zootaxa.4878.1.11
039F87CBF43AFFFDFF4AFEFAFD212C7D.taxon	diagnosis	Diagnosis. Adamas gen. nov. is distinguished from all recent and extinct genera of Lymexylidae by the lozengeshaped scutellum with a longitudinal median groove.	en	Chen, Xin-Yu, Zhang, Hua-Chuan (2020): A new fossil record of Lymexylidae (Insecta: Coleoptera) from mid-Cretaceous amber of northern Myanmar. Zootaxa 4878 (1): 195-200, DOI: 10.11646/zootaxa.4878.1.11
039F87CBF43AFFFDFF4AFD26FE6A29C2.taxon	description	(Figs 1 – 3)	en	Chen, Xin-Yu, Zhang, Hua-Chuan (2020): A new fossil record of Lymexylidae (Insecta: Coleoptera) from mid-Cretaceous amber of northern Myanmar. Zootaxa 4878 (1): 195-200, DOI: 10.11646/zootaxa.4878.1.11
039F87CBF43AFFFDFF4AFD26FE6A29C2.taxon	etymology	Etymology. The specific epithet is derived from the Hukawng Valley in northern Myanmar and is a reference to the location discovered of the specimen.	en	Chen, Xin-Yu, Zhang, Hua-Chuan (2020): A new fossil record of Lymexylidae (Insecta: Coleoptera) from mid-Cretaceous amber of northern Myanmar. Zootaxa 4878 (1): 195-200, DOI: 10.11646/zootaxa.4878.1.11
039F87CBF43AFFFDFF4AFD26FE6A29C2.taxon	materials_examined	Type material. Holotype: male, in Burmese amber, CSCLRCAB 100180.	en	Chen, Xin-Yu, Zhang, Hua-Chuan (2020): A new fossil record of Lymexylidae (Insecta: Coleoptera) from mid-Cretaceous amber of northern Myanmar. Zootaxa 4878 (1): 195-200, DOI: 10.11646/zootaxa.4878.1.11
039F87CBF43AFFFDFF4AFD26FE6A29C2.taxon	diagnosis	Diagnosis. As for the genus.	en	Chen, Xin-Yu, Zhang, Hua-Chuan (2020): A new fossil record of Lymexylidae (Insecta: Coleoptera) from mid-Cretaceous amber of northern Myanmar. Zootaxa 4878 (1): 195-200, DOI: 10.11646/zootaxa.4878.1.11
039F87CBF43AFFFDFF4AFD26FE6A29C2.taxon	description	Description. Male. Body length from anterior margin of frons to abdominal terminal 6.0 mm; elongate, nearly parallel-sided, moderately dorsoventrally flattened (Fig. 1); lightly sclerotized; clothed in fine setae; legs long, thin. Head (Fig. 2 A−B): ovate, length about 1.5 X width, narrowed behind eyes, forming " neck "; eyes (Fig. 2 A−B; e), entire and large, separated by less than single eye width, with stout intrafacetal setae; epicranial pit absent; antennae 11 - segmented, with flagellum pectinate (Fig. 2 C−D), rami of segments 3 - 11 approximatly 0.69 mm; scapus (Fig. 2 D; I) short, 3 / 4 as long as pedicellus (Fig. 2 D; II); antennal segments III−XI (Fig. 2 D; III−XI) relatively long, almost equal in length; maxillary palp organ (Fig. 2 F; mp) present, multi-branched, with two primary branches and parallel secondary branches forming a basketlike structure; maxillary palpus 4 - segmented, segment IV (Fig. 2 F; p IV) elongate, with numerous apical sensilla. Thorax: pronotum length 0.95 mm, width 0.56 mm; pronotum slightly narrower than head, with mesal longitudinal depression, posterior and anterior widths equivalent (i. e., not constricted); scutellum (Fig. 2 H; s) lozenge-shaped, with longitudinal median groove. Legs: long, thin, with dense shallow punctures and short, fine setae; portion of prothoracic leg lost, tarsal formula? - 5 - 5, tibial spur formula? - 0 - 0. Each elytron (Fig. 2 G−H) but slightly shortened, not covering abdomen; lightly sclerotized, with dense, shallow punctures and long, fine setae. Each metathoracic wing (Fig. 3 B−C): large, membranous, not covered by elytron at rest, folded longitudinally only; venation only partially observed; C + Sc + R as well as r-m crossvein fragmentary, radius (R) fused with C + Sc at about middle; radial cell and radial crossvein absent. Metendosternite (Fig. 3 A): furcal stalk long, parallel sided. Abdomen: flat in form, with seventh sternite visible; tergites and sternites wider than long; segments IV-VII similar in form, VII smaller than VI; VII forms circumgenitalic capsule; length 2.5 mm excluding genitalia, width at most 0.83 mm on IV segment. Male genitalia: lateral lobes (Fig. 3 E & 3 G; ll) symmetrical; abdominal segment IX of male symmetrical; abdominal sternite VIII of male without large setose pads; median lobe (Fig. 3 G; ml) large relative to lateral lobes.	en	Chen, Xin-Yu, Zhang, Hua-Chuan (2020): A new fossil record of Lymexylidae (Insecta: Coleoptera) from mid-Cretaceous amber of northern Myanmar. Zootaxa 4878 (1): 195-200, DOI: 10.11646/zootaxa.4878.1.11
039F87CBF43AFFFDFF4AFD26FE6A29C2.taxon	discussion	Remarks. The new species is distinguished from all recent and extinct genera of Lymexylidae by the lozengeshaped scutellum with a longitudinal median groove (that of Cratoatractocerus (Wolf-Schwenninger, 2011) bears two longitudinal ridges plus a slightly grooved meson). The following characters are of diagnostic value: lengthened longitudinal oval-shaped head; pectinate antennae the same as “ flabellate ” morphs in Hylecoetus flabellicornis (Schneider, 1791) but unlike all other lymexylids; huge eyes that occupy vast parts of the head surface and are strongly approximate dorsally (eyes large, ovate, conspicuous, occupying much of both the dorsal and ventral surfaces of the head in Atractocerus); each elytron slightly shortened, not covering all the parts of the abdomen (elytra very short, exposing most abdominal terga in Atractocerus); large median lobe relative to lateral lobes. Female. Unknown.	en	Chen, Xin-Yu, Zhang, Hua-Chuan (2020): A new fossil record of Lymexylidae (Insecta: Coleoptera) from mid-Cretaceous amber of northern Myanmar. Zootaxa 4878 (1): 195-200, DOI: 10.11646/zootaxa.4878.1.11
