Nothotytthonyx serratus Li, Biffi, Kundrata & Cai,, 2022

Li, Yan-Da, Biffi, Gabriel, Kundrata, Robin, Huang, Di-Ying & Cai, Chen-Yang, 2022, Nothotytthonyx, a new genus of Malthininae (Coleoptera, Cantharidae) from mid-Cretaceous amber of northern Myanmar, ZooKeys 1092, pp. 19-30 : 19

publication ID	https://dx.doi.org/10.3897/zookeys.1092.81701
publication LSID	lsid:zoobank.org:pub:68816AB2-2FA3-4B8B-A7F8-4987BA6DF5A8
persistent identifier	https://treatment.plazi.org/id/44E1AFDB-31BC-4B43-B8FA-D3F566934E3F
taxon LSID	lsid:zoobank.org:act:44E1AFDB-31BC-4B43-B8FA-D3F566934E3F
treatment provided by	ZooKeys by Pensoft
scientific name	Nothotytthonyx serratus Li, Biffi, Kundrata & Cai,
status	sp. nov.

Treatment

Nothotytthonyx serratus Li, Biffi, Kundrata & Cai, sp. nov.

Figs 1 View Figure 1 , 2 View Figure 2 , 3 View Figure 3 , 4 View Figure 4 , 5 View Figure 5

Material.

Holotype, NIGP179427, female.

Etymology.

The specific name refers to its distinctly serrate antennae.

Locality and horizon.

Amber mine located near Noije Bum Village (26°20'N, 96°36'E), Tanai Township, Myitkyina District, Kachin State, Myanmar; unnamed horizon, mid-Cretaceous, Upper Albian to Lower Cenomanian.

Diagnosis.

As for the genus.

Description.

Adult female. Body weakly sclerotized, elongate, about 5.3 mm long, 1.4 mm wide (widest across abdomen).

Head (Fig. 3A,F View Figure 3 ) fully exposed, prognathous, subquadrate, weakly narrowed posteriorly, including eyes almost as wide as pronotum; dorsal surface flat, without protuberance or depression. Compound eyes moderately large and weakly protruding, finely facetted, without interfacetal setae. Antennal insertions located anteriorly, dorsally exposed, separated by approximately the length of antennomere 1. Subantennal grooves absent. Antennae (Fig. 4B,C View Figure 4 ) with 11 antennomeres; antennomere 1 moderately broad; antennomeres 2 short; antennomere 3-10 distinctly serrate. Mandibles with one prominent tooth on incisor edge (Fig. 5D View Figure 5 ). Apical maxillary and labial palpomeres elongate, symmetrical, fusiform, not unequally expanded, apex acute (Fig. 4A View Figure 4 ). Gular sutures confluent (Figs 3A View Figure 3 , 5B View Figure 5 ).

Pronotal disc (Fig. 3G View Figure 3 ) transverse; anterior and posterior angles broadly rounded; lateral and posterior margins clearly bordered. Elytra (Fig. 3H View Figure 3 ) relatively short, covering only about half of posterior body; surface somewhat punctate. Procoxae (Fig. 5B View Figure 5 ) conical, well projecting, contiguous. Mesocoxae (Fig. 5B View Figure 5 ) conical, well projecting, narrowly separated. Metaventrite (Fig. 3C View Figure 3 ) large, with distinct discrimen and metakatepisternal suture. Metacoxae (Fig. 3C View Figure 3 ) transverse, almost contiguous.

Legs slender. Trochanters obliquely articulated to femoral bases. Tibiae with weak spurs (at least as seen on left mesotibia; Fig. 4D View Figure 4 ). Tarsal formula 5-5-5; tarsomere 4 ventrally bilobed (Figs 4D View Figure 4 , 5E View Figure 5 ). Claws simple.

Abdomen with seven free ventrites. Gonostyli well developed (Fig. 4F View Figure 4 ).