Utra Jordan , 1895

Jin, Mengjie, Keyzer, Roger De, Hutchinson, Paul, Pang, Hong & Ślipiński, Adam, 2020, A Review Of The Australian Macrotomini (Coleoptera: Cerambycidae: Prioninae), Annales Zoologici 70 (1), pp. 33-96 : 73-74

Utra Jordan, 1895

( Figs. 13 G–I, 15B , 15Q , 18C )

Utra Jordan, 1895: 267 . Type species Utra nitida Jordan, 1895 , by monotypy.

Diagnostic combination (Male). Large beetles, 45–65 mm long. Dorsum brown to dark brown, elytra often weakly yellowish brown near apex. Sexually dimorphic dense fine punctures present near lateral margin of pronotum and ventral side of prothorax. Head as broad as or slightly narrower than prothorax; frontoclypeal suture straight or broadly arcuate; medi- an groove complete. Antennal tubercles almost flat, pointed apically. Eyes transverse, weakly emarginate near antennal insertion, broadly separated dorsally. Mandibles shorter than head capsule, sexually dimorphic, weakly arcuate and bidentate apically. Antenna extending beyond elytral humeral angle in males. Scape very short, less than 1/4 length of head capsule, posteriorly extending only to middle of eye, moderately expanded apically; antennomere 3 longer than scape and slightly longer than antennomere 4. Mentum not fused to sub-mentum. Terminal palpomere of maxillary and labial palps elongate and apically rounded. Prothorax transverse with lateral carina weakly dentate; anterior margin without bead; posterior margin with complete bead. Pronotum distinctly shiny and smooth, with fine and shallow punctures laterally. Prosternal process sub-parallel with lateral carina, extending to mesoventrite, narrowly rounded apically. Elytra surface glabrous and shiny; inner apical angle bluntly angulate. Legs strong, spines absent on femora and tibia. Protibia smooth, apices with two sharp projections and pair of subequal spurs; lobes on tarsomere 3 very narrow and short, tarsomere 5 much longer than tarsomeres 1 and 2 combined.

Description. Male. Length 45–60 mm. Dorsum glabrous and shiny, brown to dark brown, with elytra apical area usually lighter in colour. Head slightly transverse, narrower than pronotum. Mandibles narrow and elongate strongly arcuate apically, bidentate at apex, without extra teeth on incisor edge; dorsum bearing dense short hairs near base. Labrum transverse, anterior margin strongly concave and emarginate medially, covered with dense setae; labrum separated from clypeus by a deep arcuate groove; dorsal surface of labrum and clypeus with dense erect long setae. Frontoclypeal suture almost straight or broadly arcuate; median groove distinct and complete. Antennal tubercles relatively flat, very distant to each other, apex moderately pointed. Antenna 11-segmented, filiform or weakly monoliform, extending to or shortly beyond elytral humeral angle; scape short, shorter than eye length. Eyes transverse, coarsely facetted, very weakly emarginate near antennal foramen; broadly separated dorsally. Submentum weakly curved at apex, mentum well exposed; terminal palpomere of maxillary and labial palps elongated oval and apically rounded. Pronotum transverse, trapezoid with posteri- or margin slightly narrower than anterior margin, anterior margin emarginate medially and without bead; posterior margin with complete bead; lateral carina dentate. Disc shiny, glabrous and smooth, with shallow and fine punctures on lateral area. Prosternum bearing uniformly shallow fine punctures; hypomeron well-defined, same width as prosternal process. Prosternal process sub-parallel with complete lateral carinae, projecting towards mesoventrite and narrowly rounded apically. Mesoventral process as broad as prosternal process, apex emarginate medially. Ventral side of pterothorax and coxae covered with golden hairs, except for a shiny triangular central area on metaventrite. Metanepisternum weakly constricted at base. Scutellum rounded at apex, surface smooth and shiny. Elytra smooth, glabrous and shiny, without any traces of venation; elytral apices rounded or bluntly angulate without sutural spines; epipleuron almost complete, very strongly narrowing apically. Legs strong, femur broad and relatively flat, weakly constricted at both ends, surface smooth and shiny, ventral side without rows of spines; each tibia with two distinct apical spines and a pair of long spurs; tarsi slen- der; tarsomere 3 with very narrow and short lobes; tarsomere 5 much longer than tarsomere 1 and 2 combined. Abdominal ventrites moderately smooth and shiny; each ventrite with small finely punctate area near anterior angle; ventrites bear sparse fine hairs and dense long setae along the edges, especially on the apex of ventrite 5. Male genitalia ( Fig. 15B ). Tegmen longer than sternite VII; parameres long, about 0.17 times length of entire tegmen, slightly truncate apically with small triangular projections at the base; penis about as long as tegmen, dorsal apex broadly truncate while ventral apex narrowly rounded.

Female. Mandibles shorter than in male, wedgeshaped, thick and strong with broad base, strongly arcuate apically, bearing single apical tooth and one subapical tooth on inner edge. Pronotum more rectangular; surface completely smooth and glabrous. Prosternum and hypomeron with sparse hairs, relatively smooth and shiny. Ovipositor ( Fig. 15Q ) short and strong, apical sclerosed part less than half of baculus length; distal gonocoxites moderately long and very sharp; stylus inserted laterally and distant to gonocoxite apex, relatively short and gradually expanded apically.

Remarks. Monotypic genus distributed only in Australia.

Figures

Figure 13. A–C: Pseudoplites hamali (Lameere); D–F:Teispes insularis (Hope); G–I: Utra nitida Jordan; J–M: Xixuthrus microcerus (White). A, D, G, K: male, dorsal; B, E, H: male, ventral; C, F, I, L: female, dorsal; J: apex of protibia, arrow indicate the single spur; M: head, dorso–lateral, arrow indicates not emarginate eye near antennal insertion.

Figure 15. A–C: male genitalia, each figure from left to right: tegmen (ventral), tegmen (lateral), penis (ventral). A: Teispes insularis (Hope); B: Utra nitida Jordan; C: Xixuthrus microcerus (White). D–R: ovipositor. D: Agrianome spinicollis (Macleay); E: Analophus parallelus Waterhouse; F: Anomophysis coxalis (Gahan); G: Archetypus marginatus sp. nov.; H: Brephilydia jejuna (Pascoe); I: Cnemoplites edulis Newman; J: Cryptipus frenchi (Blackburn); K: Eurynassa servillei Thomson; L: Geoffmonteithia queenslanda Jin, de Keyzer et Ślipiński; M: Hagrides princeps (Gahan); N: Hermerius impar Newman; O: Pseudoplites hamali (Lameere); P: Teispes insularis (Hope); R: Utra nitida Jordan; R: Xixuthrus microcerus (White).

Figure 18. Distribution maps based on specimens examined.