Nothotytthonyx 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

Genus Nothotytthonyx Li, Biffi, Kundrata & Cai, gen. nov.

Type species.

Nothotytthonyx serratus sp. nov.

Etymology.

The generic name is derived from the Greek " nothos ", false, and the generic name Tytthonyx LeConte. The name is masculine in gender.

Diagnosis.

Antennae strongly serrate (Figs 3F , 4C ). Mandibles with a prominent tooth on incisor edge (Fig. 5D ). Apical maxillary palpomere symmetrical, fusiform (Fig. 4A ). Gular sutures confluent (Figs 3A , 5B ). Elytra shortened; surface somewhat punctate. Tibial spurs present (Fig. 4D ). Gonostyli well developed (Fig. 4F ).

Figures

Figure 3. Details of Nothotytthonyx serratus Li, Biffi, Kundrata & Cai sp. nov., holotype, NIGP 179427, under confocal microscopy A head, ventral view, showing the confluent gular suture (arrowhead) B prothorax, ventral view C metathorax, ventral view D abdominal base, ventral view E abdominal apex, ventral view F head, dorsal view G prothorax, dorsal view H elytral base, dorsal view H abdominal apex, dorsal view. Abbreviations: an 1 - 11, antennomeres 1 - 11; el, elytron; ey, compound eye; md, mandible; msf, mesofemur; mtc, metacoxa; mttb, metatibia; mtts, metatarsus; mtv, metaventrite; mxp, maxillary palp; pc, procoxa; pn, pronotum; ps, prosternum; v 1 - 7, ventrites 1 - 7. Scale bars: 300 μm.

Figure 4. Details of Nothotytthonyx serratus Li, Biffi, Kundrata & Cai sp. nov., holotype, NIGP 179427, under confocal microscopy A mouthparts, ventral view B antennal base, dorsal view C antennal apex D mid leg, showing the two weak tibial spurs (arrowhead) E abdominal apex, dorsal view F ovipositor, ventral view. Abbreviations: an 1 - 11, antennomeres 1 - 11; gc, gonocoxite; gs, gonostylus; lbp, labial palp; mst 1 - 5, mesotarsomeres 1 - 5; mstb, mesotibia; mxp, maxillary palp. Scale bars: 200 μm.

Figure 5. X-ray microtomographic reconstruction of Nothotytthonyx serratus Li, Biffi, Kundrata & Cai sp. nov., holotype, NIGP 179427 A dorsal view B ventral view C lateral view D anterodorsal view E anterolateral view. Scale bar: 2 mm.