Auletanus (Neauletes) tanimbarensis, 2023

Legalov, Andrei A., 2023, A new species of the genusAuletanusVoss, 1922 (Coleoptera, Rhynchinidae) from Indonesia, Baltic Journal of Coleopterology 23 (2), pp. 221-225 : 221-225

Auletanus (Neauletes) tanimbarensis

Legalov, sp. nov.

( Fig. 1 )

Type material: Holotype. Male ( ISEA), Indonesia, Maluku Province, Kepulauan Tanimbar, Yamdema isl. , 20 km NE Saumlaki, Lorun vill. env., 150 m,

222

25.XII.2006 - 10.I.2007, St. Jakl. Paratypes, 3 females ( ISEA), idem .

Description. Body black-brownish, covered with decumbent light coloured hairs. Antennomeres 1-8 and legs red-brown.

Male: Rostrum 1.3 times as long as pronotum, 4.3 times as long as wide at apex, about 6.7 times as long as wide at middle and 3.5 times as long as wide at base, slightly curved, weakly expanded to apex, subglabrous in apical part, coarsely punctate in basal part. Mandibles externally dentate. Eyes large, strongly convex, rounded, finely faceted. Forehead weakly convex, 1.2 times as wide as width of rostrum basally, finely punctate. Temples quite short, about 0.5 times as long as eye. Vertex convex, densely punctate. Antennae slender, subbasally, extend middle of pronotum. Antennomeres 1 and 2 long-oval. Antennomere 1 1.7 times as long as wide in middle. Antennomere 2 1.9 times as long as wide in middle, 1.2 times as long as and slightly wider than antennomere 1. Antennomeres 2–8 subconical. Antennomere 3 3.0 times as long as wide at apex, 1.1 times as long as and 0.7 times as narrow as antennomere 2. Antennomere 4 3.1 times as long as wide at apex, slightly shorter and narrower than antennomere 3. Antennomere 5 2.9 times as long as wide at apex, 0.9 times as long as and 0.9 times as narrow as antennomere 4. Antennomere 6 1.9 times as long as wide at apex, 0.8 times as long as and 1.1 times as wide as antennomere 5. Antennomere 7 1.6 times as long as wide at apex, slightly shorter and wider than antennomere 6. Antennomere 8 1.4 times as long as wide at apex, 0.9 times as long as and about 1.1 times as wide as antennomere 7. Antennal club not compact, 0.5 times as long as antennomeres 2–8 combined. Antennomere 9 1.1 times as long as wide at apex, 1.5 times as long as and about 1.9 times as wide as antennomere 8. Antennomere 10 0.9 times as long as wide, 0.8 times as long as and slightly wider than antennomere 9. Antennomere 11 1.8 times as long as wide, 2.0 times as long as and slightly narrower than antennomere 10.

Pronotum campanulate, 1.2 times as long as wide at apex, slightly wider than wide in middle and about 1.2 times as long as wide at base. Disk weakly convex, densely punctate. Scutellum trapezoid, finely punctate.

Elytra 1.5 times as long as wide at base, 1.3 times as long as wide at middle, 1.6 times as long as wide at apical fourth, 2.3 times as long as pronotum. Humeri slightly flattened. Elytral with punctate striae. Interstriae weakly convex, 1.0–2.5 times as wide as elytral stria. Rounded apex of elytra when both together, without hair stains.

Pre- and postcoxal portions of prosternum very short. Procoxal cavities contiguous. Metanepisternum 6.0 times as long as wide in middle, finely punctate. Metaventrite 2.0 times as long as length of metacoxa, weakly convex, finely punctate. Abdomen convex, punctate. Ventrites 1 and 2 fused. Ventrite 1 equal to length of metacoxa. Ventrite 2 equal to ventrite 1, lacking protuberances. Ventrite 3 0.9 times as long as ventrite 2. Ventrite 4 equal to ventrite 3. Ventrite 5 equal to ventrite 4.

Procoxae large, conical. Metacoxae transverse. Femora weakly thickened. Tibiae almost straight, flattened, with spurs. Protibiae lacking tooth and not widened at apex. Protarsi 0.7 times as long as protibiae. Mesotarsi 0.8 times as long as mesotibiae. Metatarsi 0.9 times as long as metatibiae. Tarsi long. Tarsomere 1 long-conical. Tarsomere 2 wide-conical. Tarsomere 3 bilobed. Tarsomere 5 elongate. Tarsal claws slightly divergent and dentate.

Armament of endophallus consists of three sclerites (basal, arcuate and bottom sclerites) ( Fig. 1k ).

Total body length (without rostrum) 1.7 mm. Length of rostrum 0.6 mm.

Female: Rostrum about 1.4 times as long as pronotum, about 5.2 times as long as wide at apex, about 6.4 times as long as wide at middle and about 4.4 times as long as wide at base. Forehead about 1.5 times as wide as width of rostrum basally. Antennomere 1 1.8 times as long as wide in middle. Antennomere 2 1.9 times as long as wide in middle, slightly shorter and narrower than antennomere 1. Antennomere 3 about 3.6 times as long as wide at apex, about 1.2 times as long as and 0.6 times as narrow as antennomere 2. Antennomere 4 about 3.3 times as long as wide at apex, slightly shorter and equal to antennomere 3. Antennomere 5 about 2.9 times as long as wide at apex, slightly shorter and about 1.1 times as wide as antennomere 4. Antennomere 6 about 2.1 times as long as wide at apex, about 0.7 times as long as and slightly narrower than antennomere 5. Antennomere 7 about 2.1 times as long as wide at apex, slightly longer and wider than antennomere 6. Antennomere 8 about 1.6 times as long as wide at apex, 0.9 times as long as and about 1.1 times as wide as antennomere 7. Antennal club 0.4 times as long as antennomeres 2–8 combined. Antennomere 9 about 0.9 times as long as wide at apex, 1.2 times as long as and about 2.4 times as wide as antennomere 8. Antennomere 10 about 0.7 times as long as wide, about 0.9 times as long as and slightly wider than antennomere 9. Antennomere 11 about 1.3 times as long as wide, about 1.7 times as long as and slightly narrower than antennomere 10. Pronotum about 1.1 times as long as wide at apex, 0.9 times as long as wide in middle and about 1.1 times as long as wide at base. Elytra 1.5 times as long as wide at base, about 1.2 times as long as wide at middle, about 1.9 times as long as wide at apical fourth, about 2.3 times as long as pronotum. Metaventrite about 1.4 times as long as length of metacoxa.

223 Ventrite 1 slightly shorter than length of metacoxa. Ventrite 2 about 0.8 times as long as ventrite 1. Ventrite 3 about 0.8 times as long as ventrite 2. Ventrite 4 about 0.5 times as long as ventrite 3. Ventrite 5 equal to ventrite 4. Total body length (without rostrum) 1.7-1.8 mm. Length of rostrum 0.7 mm.

Diagnosis. The new species is similar to Auletanus (Neauletes) madangensis ( Legalov, 2007) from New Guinea but differs in arger punctures forming more regular rows in the first half of the elytra, shorter antennomere 11, long and narrow aedeagus, different form of basal, arcuate, and bottom sclerites.

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Etymology. From Tanimbar Islands.

Distribution. Indonesia: Maluku Province.

Figures

Fig. 1.Auletanus(Neauletes)tanimbarensis sp. nov.: a – habitus, holotype, male, dorsally, b – habitus, holotype, male, frontal-dorsally, c – habitus, paratype, female, dorsally, d – habitus, paratype, female, frontally, e – habitus, holotype, male, laterally, f – habitus, paratype, female, laterally, g – aedeagus, holotype, dorsally; h – aedeagus, holotype, laterally; I – tegmen, holotype, dorsally, j – tergite 8, holotype, dorsally; k – armament of endophallus, holotype, dorsally, i – abdomen. Scale bar = 1.0 mm for a-f; 0.2 mm for g-l.