Lagria (s. str.) hatam, Telnov, 2024

Lagria (s. str.) hatam sp. nov. ( Figs. 3–4 View Figure 3 View Figure 4 )

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Type material designated. Holotype ♂ NME ( Fig. 3 View Figure 3 ): W– PAPUA Manokwari ca. 10km NW Ransiki, Kali Way , 1300m 01°25.03’S, 134°01.49’E 03.III.2007 leg. A. Weigel [printed]. GoogleMaps

Derivatio nominis. Named after Hatam, a local language in the Ransiki area where the new species was found. Noun in apposition.

Measurements. Holotype male, total body length 6.9 mm; head length 1 mm, maximum head width across compound eyes 1.1 mm, pronotal length 0.9 mm, maximum pronotal width across median area 1.1 mm, maximum pronotal width across base 1.1 mm, elytral length 5 mm, combined maximum elytral width across postmedium 2.9 mm.

Description. Holotype male. Dorsum and venter uniformly dark brown to black, dorsum with dark blue metallic shine. Head subtrapezoidal, hardly transverse, glossy dorsally and ventrally. Labrum emarginate medially at anterior margin. Epistoma strongly, deeply and broadly emarginate at anterior margin in a shape of an inverted П. Frontoepistomal impression deep, slightly arched. Insertion of antenna not concealed. Frons slightly convex between compound eyes. Compound eye large, deeply emarginate at anterior, subtruncate at posterior margin in lateral view, touching insertion of antenna, moderately prominent in lateral and dorsal aspect. Interfacetal setae not observed. Minimum interocular distance narrow, about 0.5–0.6× as long as dorsal eye portion. Tempus slightly converging towards head base, rather long, temporal angle rounded, head base concave. Head dorsum coarsely punctate with deep variably shaped punctures. Intervening spaces smooth and glossy on frons, microscopically strigose on tempora ( Fig. 3B View Figure 3 ), narrower than to as wide as punctures. Head dorsal setation whitish to yellowish, long, suberect, sparse, not concealing dorsal surface of head. Antenna long, filiform, exceeds slightly beyond metacoxa when directed posteriad. Basal antennomere short, slightly thickened, about 1.3× as long as second antennomere. Second antennomere longer than wide. Third antennomere about 1.6× as long as second antennomere, slightly shorter than fourth antennomere, the longest of 1–10. Antennomeres 3–8 filiform, 9–10 widened distally. Penultimate antennomere longer than wide. Terminal antennomere elongate, about 1 mm long, asymmetrical, apically obliquely pointed, about 1.8× as long as penultimate antennomere and slightly shorter than combined length of two preceding antennomeres. Terminal maxillary palpomere small, securiform. Pronotum subtrapezoidal, slightly transverse, glossy and flattened dorsally, rounded at anterior, truncate at posterior margin. Maximum width in median and basal portion, lateral margins slightly converging anteriorly and barely emarginated prebasally. Anterior and posterior edge not margined or rimed. Lateral margin not visible in dorsal view. Anterolateral angles obtuse in dorsal view. Pronotal disc uneven,

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Dmitry Telnov declivous on lateral sides, shallowly transversely impressed in anterior third ( Fig. 3B View Figure 3 ). Dorsal pronotal punctures deep, large and sparse on anterior portion, large and dense on lateral sides, small and dense medially on basal portion. Intervening spaces smooth and glossy, variably wide – much wider than punctures on anterior, narrower than those on basal portion. Dorsal pronotal setae as those on head. Scutellar shield small, apically rounded, densely punctured. Elytron widened postmedium, dorsally slightly convex, glossy. Apical sutural angle rounded in dorsal view. Elytral lateral margin visible in dorsal view in posthumeral portion of elytron, sinuous in lateral view. Elytral punctures dense, deep, in part subconfluent. Intervening spaces smooth and glossy, slightly elevated, in part appear shortly transversely wrinkled, narrow- er than to twice as wide as punctures. Elytral setae yellowish, moderately long, moderately dense, suberect, not concealing sculpture of elytra. Epipleuron complete, broad at most of its length except at elytral apex, glossy, moderately densely punctured. Metathoracic wings fully developed (functional). Legs long, slen- der, moderately glossy, tibiae and tarsi with long and dense yellowish setae. Femur not clavate. Tibia not widened distally, straight, male meso- and metatibia with acute denticles on inner edge, longest denticles positioned at midlength of tibiae ( Fig. 3C–D View Figure 3 ). Pro- and mesotarsomeres slightly widened. Male basal metatarsomere shorter than combined length of remaining metatarsomeres. Male tergite VII and sternite VII broadly rounded at posterior margin. Aedeagus as in Fig. 4 View Figure 4 .

Sexual dimorphism. Female is unknown.

Differential diagnosis. This rather small, dorsally uniformly dark blue species appears similar to several congeners. Lagriaaustralis Champion, 1895 (northern Australia) and L. gressitti Merkl, 1988 (New Guinea) both have significantly thicker and shorter antenna only reaching mesocoxa when directed posteriad, the compound eye is comparatively small- er and the interocular distance – comparatively

200 wider, the tempus is distinctly constricted towards head base and not microscopically strigose on the intervening spaces, the pronotum is longer than wide, regularly punctate, not impressed dorsally. Lagria brassi Merkl, 1990 (New Guinea) has much slenderer pronotum without the densely punctured prebasal area, the frons is somewhat impressed between the compound eyes, the elytra got paler preapical spot, and the male terminal antennomere is stronger elongate, about as long as 2.5 preceding antennomeres combined. Lagria cyanea MacLeay, 1872 ( Australia: Queensland and the northern part of the continent) has pale brown to yellowish venter and most of the femora, the antenna is significantly thicker and shorter only reaching mesocoxa when directed posteriad, the pronotum is longer than wide, regularly punctate and not transversely impressed dorsally, the compound eye is comparatively smaller and the interocular distance – comparatively wider, the tempus is constricted towards head base, not microscopically strigose. Lagria ligulata Merkl, 1988 (New Guinea) has the pronotum without anterior transverse dorsal impression but with an elliptical median field of very dense micropunctures, the antennomeres 1–2 to 1–6 are pale, the tempus is microscopically strigose in this species similarly like in L. hatam sp. nov.

Ecology. Occurs at about 1300 m in mid-montane rainforests.

Distribution. Arfak Mountains, Doberai Peninsula, New Guinea.