Limonius scutellaris ( Dolin, 2003 ) Dolin, 2003

Han, Taeman, Park, Haechul, Lee, Youngbo, Kim, Namjeong, Ôhira, Hitoo, Platia, Giuseppe & Lee, Seunghwan, 2012, Taxonomic Review of the Subtribe Athouina Candèze, 1859 (Coleoptera, Elateridae, Dendrometrinae, Dendrometrini) in Korea, Zootaxa 3591, pp. 47-66 : 54-58

publication ID	https://doi.org/ 10.5281/zenodo.283181
DOI	https://doi.org/10.5281/zenodo.6173534
persistent identifier	https://treatment.plazi.org/id/03893739-FFAF-BC1C-8DAB-4396F9BBFAC1
treatment provided by	Plazi
scientific name	Limonius scutellaris ( Dolin, 2003 )
status	comb. nov.

Treatment

Limonius scutellaris ( Dolin, 2003) comb. nov.

( Figs. 1 View FIGURE 1. A, B C–D; 4A–U; 5A–C; 6A–B)

Cidnopus scutellaris Dolin, 2003: 36 . (Ussuriysk, the Russian Far East)

Specimens examined. A total of 26 individuals. <GW> male, Mt. Seolak, Yangyang-gun, GW, Korea. 23. V. 1989. Y. J. Kwon. [NAAS]; male, Dojagok-ri, Bukbang-myeon, Hongcheon, GW, Korea. 30. V. 2009. T. M. Han, DNA 867. [NAAS] <GB> female, Mt. Sobaek, Yeongju, GB, Korea. 30. V. 1989. Y. J. Kwon; male, Temple Hibangsa in Mt. Sobaek, Yeongju, GB, Korea. 8. VI. 1974. Jeong Ho, Park. [NAAS]; female, Seobeuk-ri, Chunyang, Bongwha, GB, Korea. 29. V. 2010. T. M. Han, DNA 2638. [NAAS]; male, Mt. Hangak, Daehangmyeon, Kimcheonshi, GB, Korea. 4. VI.? Seong Hee Lee [SWU] <CB> female, Songgye-ri, Hansu-myeon, Jaecheon, CB, Korea. 18. V. 2010. S. W. Park, DNA no. 2778. [NAAS] <GG> male, Mt. Yongmun, Yongmunmyeon, Yangpyeong, GG, Korea. Y. J. Kwon. [NAAS]; male, Mt. Homyeon, Goseong Cheongpyeong, Gapyeong, GG. Korea, Malaise trap II. Alt. 220 m. 1–26. V. 2009. Jongok Lim. [SNU]; 2 males, 4 females, Is. Soya-do, Ongjin-gun, Incheon, GG, Korea. 6. VI. 2009. T. W. Kang, DNA 2361-6. [NAAS] <CN> female, Temple Gapsa in Mt. Geryeong, Jungjang-ri, Geryong-myeon, Gongju, CN, Korea, 29. V. 2010. T. M. Han, DNA 2617. [NAAS]; 3 males, Mt. Chilgap, Cheongyang-gun, CN, Korea. 18. VI. 2000. Tae Woo Kim. [NAAS] <JB> 2 males, Mt. Deokyou, Seolcheon-myeon, Muju, JB, Korea. 28. V. 1991. Y. J. Kwon. [NAAS]; female, Jeockseong-myeon, Muju, JB, Korea. 15. V. 2008. Sang Wook Park [NAAS] <JN> female, Mt. Jiri, Korea. 27. V. 1989. Y. J. Kwon. [NAAS] < Russia > Cidnopus scutellaris Dolin, 2003 : male, Россия, Приморский край, Лазовский р-н, окр. Лазо-райчентр, 43 22‘ 43’‘ N 133 54' 01'' E. В. Шохрин leg. 26–29. V. 2007 [ Russia, Primorsky Krai, Lazo District, ROC. Lazo-raychentr, 43 22 '43'' N 133 54' 01''E. B. Shohrin leg. 26–29. V. 2007], identified by A. S. Prosvirov, 2009, DNA 2398. [NAAS]; female, Primorsky Krai, Baraboshi District, Russia. 22. VI. 2008. J. W. Lee, identified by T. M. Han, DNA 2564 [NAAS].

Description. Male ( Fig. 1 View FIGURE 1. A, B C) medium size, 5.8–6.2 mm long, 1.7–1.82 mm wide; body sub-cylindrical, parallel-sided, and convex. Color entirely black, lustrous, with apex of mandibles and maxillary palpi blackish brown to dusky brown; pubescence pale bronze brown, moderately long, thin, sub-recumbent anteriorly, with erect hairs rarely distributed on head and pronotum. Head ( Fig. 4 View FIGURE 4 D) flat between eyes, declivous to front, with a shallow triangular impression; frontal margin ( Fig 4 View FIGURE 4 D and 4F) well expanded anteriorly, sinuate at middle; punctures subcircular, simple, deep, ( Fig. 4 View FIGURE 4 E) becoming larger, sub-umbilicate, dense, coarse to outsides, intervals between punctures about 0.5–1.0 times medially and 1.0–2.0 times broader than punctures to outsides; surface glabrous, but slightly rugose to outwards; eyes moderately prominent, with ocelli weakly convex; vertex about 4.0 times (36:9) wider than eyes in dorsal view; frontal groove ( Fig. 4 View FIGURE 4 F) broadly and transversely excavated, with large, shallow ocellate sculptures wholly; the intermediate portion between eye and antennal socket with two small pores disconnected from each other; labrum semi-circular with long setae anteriorly; mandibles bidentate at apex; maxillary palpi axe shape, the last segment elongate, sub-triangular. Antennae moderately long, 10th and 11th antennomeres exceeding beyond of pronotal hind angles; 1st robust, rather flat dorsally, anterior margin weakly carinate, rugose, with large punctures; 2nd ( Fig. 4 View FIGURE 4 G) small, globular, as long as wide; 3rd ( Fig. 4 View FIGURE 4 G) small, subequal in length to 2nd, sub-triangular, as long as width; 4th ( Fig. 4 View FIGURE 4 G) slightly longer than wide (1.18 times, 20:17), a little longer than combined length of 2nd and 3rd segments; 4th to 10th triangular, each slightly wider than long; 11th elliptical ( Fig. 4 View FIGURE 4 H) longest, 2.4 times as long as wide (cat. from 2nd to 5th, 11th = 9/9: 9/10: 22.5/19: 22/19, 34/14). Pronotum ( Fig. 4 View FIGURE 4 A) trapezoidal, well convex above, a little longer than wide (33.5: 31), widest just before base of hind angles; anterior margin slightly arched at middle; lateral margins entirely carinate, with conspicuous expansion at anterior angles, slightly convergent anteriorly, the carina invisible from anterior third to two thirds by laterally expanded dorsal disc; Punctures ( Fig. 4 View FIGURE 4 B) distinct, deep, simple, vertical shape elliptical; intervals glabrous, about 2.0 times wider than punctures, punctures near anterior margin on disc clearly about 2.0 times larger and denser ( Fig. 4 View FIGURE 4 C); pronotal hind angles ( Fig. 4 View FIGURE 4 I) broad, short, very feebly sinuate at base, divergent posteriroly, bluntly pointed at apex, with a distinct short carina expanding laterally at apex, punctures distinctly large, dense; posterior margin ( Fig. 4 View FIGURE 4 J) lacking basal incisures; base of pronotum truncated, lacking a notch in front of scutellum. Prosternum ( Fig. 4 View FIGURE 4 M) convex, with simple punctures; anterior collar bent antero-inferiorly and roundly margined with punctures clearly large, dense, sub-ocellated, sub-equal in length to anterior apex of hypomera; posterior process slightly bent beyond procoxal cavities and then expanded pentagonally, laterally, ventral surface broadly convex in lateral view ( Fig. 4 View FIGURE 4 N), with a longitudinal depression along each side. Procoxal cavities narrowly open posteriorly; pronotosternal sutures double, sub-straight, anterior portion ( Fig. 4 View FIGURE 4 O) distinctly furrowed and expanded ventrally; hypomeron with simple sub-elliptical punctures, anterior portion narrowed and shallowly impressed, posterior margin nearly straight. Scutellum ( Fig. 4 View FIGURE 4 K and 4L) shield-formed, about 1.5 times as long as wide, widest at two thirds; anterior margin narrowest, truncate; lateral margins parallel madially and then broadly and roundly expanded laterally; posterior margin rounded and weakly emarginate at middle; punctures large, coarse; longitudinal median elevation distinct. Mesocoxal cavities ( Fig. 4 View FIGURE 4 P) broadly connected with mesoepimeron. Metasternum ( Fig. 4 View FIGURE 4 Q) convex; median longitudinal suture incomplete; hind coxal plates widest at insertion of trochanter, outer margin slightly convergent to half portion and then suddenly narrowed laterally. Legs slender; tarsomeres simple; claws simple ( Fig. 4 View FIGURE 4 U). Elytra sub-cylindrical, well convex above, about 2.4 times as long as wide, slightly wider than pronotum, parallel-sided posteriorly three fourths and then gradually rounded posteriorly; sutural line weakly elevated; base weakly concave along anterior edges; striae ( Fig. 4 View FIGURE 4 R) punctate, distinct; strial intervals ( Fig. 4 View FIGURE 4 R) flattened, weakly rugose transversely. Abdomen ( Fig. 4 View FIGURE 4 S) with each lateral margin of visible sternites entirely and weakly crenulate; sternite 7 ( Fig. 4 View FIGURE 4 T) semi-oval, 1.72 times as wide as long, punctures becoming gradually enlarged posteriorly. Aedeagus ( Fig. 5 View FIGURE 5 A) 2.72 times (12.8:4.7) as long as wide; median lobe slender, gradually narrowed to apex, slightly exceeding apices of parameres, 2.62 times (7.1:2.7) longer than basal struts; parameres narrow to apex, lateral margins distinctly sinuate inwardly from posterior one third to apices, inner margins straight, with lateral subapical barb expanded triangularly; lateral subapical barb rounded at apex, broad, 1.42 times (7:10) as wide as long, lacking visible setae; basal piece quadrate, 0.44 times (5.7:12.8) total length of aedeagus.

Female ( Fig. 1 View FIGURE 1. A, B D). Length 7.1–8.0 mm, width 2.0– 2.2 mm, larger, stouter than male; antennae shorter than male, approximately reaching to base of hind angles of pronotum, 2nd antennomere distinctly longer than wide (1.2–1.4 times), 3rd a little longer than wide (1.09–1.14 times), 4th sub-equal, as long as wide and shorter than the combined length of 2nd and 3rd segments, from 5th to 9th a little wider than long; pronotum more convex than male. Reproductive organs ( Fig. 6 View FIGURE 6 A and 6B): ovipositor sub-triangular, with styli ( Fig. 6 View FIGURE 6 A); vagina ( Fig. 6 View FIGURE 6 B) elongate; uterus ( Fig. 6 View FIGURE 6 B) distinctly enlarged anteriorly, with ballon-like colleterial glands, lacking sclerotised structures; bursa copularix ( Fig. 6 View FIGURE 6 B) sac like, sub-cylindrical, elongate, narrowed apically, wider than uterus, with two accessory glands in the same direction.

Reference species. Limonius minutus (Linneaus, 1758) : female, Germany, Oborpfalz Otterberg Trockunhang. V. 1990.

Unknown collector, identified by Dr. G. Platia, DNA 793; 3 males, Italy, Liguria (GE) Crocefieschi. 29. V. 1989. C. Giusto,

identified by Dr. G. Platia, DNA 2515.

Cidnopus pilosus ( Leske, 1785) : 4 males, Italy, Liguria (Sv) dint. Verezzi, m 280. 5. V. 1994. C. Giusto leg, identified by Dr. G. Platia, 3041; 2 males, Hungary, Bataapati. 29. IV. 2003. J. Y. Choi, identified by T. M. Han, DNA 3043 [NAAS].

Cidnopus pseudopilosus Platia and Gudenzi, 1985: 3 males, female, Italy, Marche (PU, Pesaro e Urbino), Mt. Carpegna m 1100–1400. 28. V. 2001. Pavanello, identified by Dr. G. Platia, DNA 3042.

Cidnopus marginicollis ( Lewis, 1894) : male, Mt. Gomanodan, Wakayama Pref., Honshu, Japan. 31. V. 1987. H. Hiramatsu leg., identified by Dr. H. Ôhira, DNA no. 3044; female, Mt. Gomanodan, Wakayama Prif., Honshu, Japan. 24. V. 1986. H. Hiramatsu leg., identified by Dr. H. Ôhira, DNA 3044.

Nothodes parvulus (Penzer, 1799) : 2 males, 2 females, Turkey, Icel Camliyayla. I. VII. 1993. G. Sama, identified by Dr. G. Platia, DNA 3045; male, Germany, von Bolzchutz-firma Binker Behringersdorf. 1989. Unknown collector, identified by Dr. G. Platia, DNA 794.

Pheletes quercus (Oliveir, 1790) : male, 3 females, Slovenia-Slavnik, Mt. Tajano, m 900. 10. VI. 1996. G. Giusto, identified by Dr. G. Platia, DNA 3046.

Remarks. Cidnopus scutellaris was recently described by Dolin (2003). It was collected from a conservation

area at Ussuriysk in the Russian Far East. This species is new to the Korean Peninsula fauna. In 2009, we examined

a male specimen that was labeled as Cidnopus scutellaris by Dr. Prosvirov from the same locality and determined

that the specimen is identical to the examined Korean specimens. However, the description of the antennae and

pronotum do not agree with the original description. Dolin (2003:36) described it as Fühler lang, sägeförmig,

überragen die Spitzen der Halsschildhinterwinkel um 1˚ Glieder…… Halsschild trapezförmig, stark gewölbt, kaum

länger als breit……. Flügeldecken 2.65x länger als der Halsschild und fast 2.5x so lang wie brei. However, in the

male specimen, the last two antennomeres (10th and 11th) extend beyond the apex of the pronotal hind angles, the

length of the pronotum is slightly longer than the width, and the length of the elytra is about 2.34 to 2.40 times

longer than the length of the pronotum and 2.06 to 2.36 times longer than the width of the elytra in several males. It is suggested that this species may be variable throughout its range. In particular, the aedeagus examined in terms of the shape of parameres in each local population was variable. A population from the Korean Peninsula has a small lateral subapical barb ( Fig. 5 View FIGURE 5 A); the population of Island Soya, located on the western coast, has a more longitudinally elongated lateral subapical barb ( Fig. 5 View FIGURE 5 B); and a Russian population has a broader lateral subapical barb ( Fig. 5 View FIGURE 5 C) as compared with the other populations examined.

Becker (1956:201) pointed out that examination of the female internal organs could be used as a main basis for grouping of species. By comparative examination, we propose transferring C. scutellaris into the genus Limonius because of the similarity of the male and female genitalia to those of the type species L. minutus (Linneaus, 1758) ( Fig. 6 View FIGURE 6 B, 6C) than to those of Cidnopus . In the examination of female reproductive organs ( Fig. 6 View FIGURE 6 D) of Cidnopus pseudopilosus Platia and Gudenzi, 1985 , most closely related to the type species C. pilosus ( Leske, 1785) , the BC is distinctly small and not elongate with two accessory glands in opposite directions.

Distribution. New to Korean Peninsula, the Russian Far East.