Laena brunkei, Schawaller & Bellersheim, 2023

Schawaller, Wolfgang & Bellersheim, Aron, 2023, New species and records of Laena Dejean (Coleoptera: Tenebrionidae: Lagriinae) from Vietnam, southeastern China, and Korea, Zootaxa 5296 (4), pp. 540-550 : 541

Laena brunkei sp. n.

( Figs 2 , 18 )

Type material. Holotype: ♁, N Vietnam, Cao Bang Prov., Pia Ouac NP, summit road, 1800 m, 17–18.V.2019, leg. A. J. Brunke & H. Schillhammer, NHMW . Paratypes. Same data as for holotype, 1 ex. NHMW , 1 ex. SMNS .— China, Guizhou, Fanjing Shan , 1800–2000 m, 5–11.VI.2014, leg. C. Reuter, 1 ♀ SMNS .

Description. Body length 3.7–4.7 mm, dorsal surface light brown without metallic reflection. Eyes weakly prominent. Antennomere 1 unusually enlarged. Pronotum round, widest across before middle, posterior margin similar wide as the anterior one; with large and confluent punctures, distance 0.5–1 puncture diameters, some punctures with short erect setae; surface convex and shining, disc without impressions; lateral margins not beaded; posterior corners rounded; prothoracic hypomera with similar punctures as on pronotum, but without visible setation. Elytra ovate with irregular punctation, not arranged in regular rows and intervals, punctures large as on pronotum but not confluent, punctures adjacent to suture forming two irregular rows; some punctures with short erect setae; lateral intervals without setiferous pores; surface shining. Apex of elytra not prolonged. All femora without teeth or sharp angles. Tibiae of both sexes simple, without peculiarities. Apicale of aedeagus triangular with rounded apex ( Fig. 18 ).

Diagnosis. L. brunkei sp. n. shares with L. burckhardti Schawaller, 1998 from Thailand and L. kresli Schawaller, 2014 from Laos (known only from the type loacalties) the small body size, the unarmed femora and the elytra with irregular punctation without separation into punctural rows and intervals. Additional species with irregularly punctured elytra are so far unknown in southeastern Asia. L. brunkei sp. n. can be separated from both by lacking elytral setiferous pores, and by rough and confluent pronotal punctures. The aedeagi of these three species are similar, compare the figures in Schawaller (1998, 2014). See also figures and diagnosis of L. honba sp. n. below.

Etymology. Named in honour of Adam J. Brunke (Ottawa), one of the collectors of the type series.

Figures

FIGURES 1–7. Dorsal view of Laena species from Vietnam and southeastern China. 1. L. faillei sp. n., ♀ paratype, Vietnam, SMNS. 2. L. brunkei sp. n., ♁ holotype, Vietnam, NHMW. 3. L. lianhua sp. n., ♁ holotype, Jiangxi, SMNS. 4. L. hajeki sp. n., ♁ paratype, Guangdong, SMNS. 5. L. hainanica sp. n., ♁ holotype, Hainan, NMPC. 6. L. logshengica sp. n., ♁ paratype, Guangxi, NMPC. 7. L. honba sp. n., ♁ holotype, Vietnam, SMNS. Scale line: 3.0 mm.

FIGURES 11–20. Aedeagi of Laena species from Vietnam and southeastern China. 11. L. tramtonica sp. n., ♁ holotype, Vietnam, NHMW. 12. L. tamdaoensis Masumoto, 1996, non-type, Vietnam, NHMW. 13. L. fanjingshanana Ren & Hua, 2006, ♁ non-type, Guangxi, SMNS. 14. L. lianhua sp. n., ♁ holotype, Jiangxi, SMNS. 15. L. faillei sp. n., ♁ holotype, Vietnam, SMNS. 16. L. logshengica sp. n., ♁ holotype, Guangxi, NMPC. 17. L. honba sp. n., ♁ holotype, Vietnam, SMNS. 18. L. brunkei sp. n., ♁ holotype, Vietnam, NHMW. 19. L. hainanica sp. n., ♁ holotype, Hainan, NMPC. 20. L. hajeki sp. n., ♁ holotype, Guangdong, NMPC. Scale line: 1.0 mm.