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

Figs 1, 2, 3, 4, 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) 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) 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). Apical maxillary and labial palpomeres elongate, symmetrical, fusiform, not unequally expanded, apex acute (Fig. 4A). Gular sutures confluent (Figs 3A, 5B).

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

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

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