Coleoptera: Cerambycidae)
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Japanese Journal of Systematic Entomology, 25 (2): 207–211. December 30, 2019. Reexamination of Type Specimens of Longhorned Beetles Preserved in the Shujiro Hirayama Collection (Coleoptera: Cerambycidae) Tatsuya NIISATO 1), Kiyoshi MATSUDA 2) and Takeo YAMAUCHI 3) 1) Bioindicator Co., Ltd., Nikkô-Kagurazaka Building, Iwato-chô 18, Shinjuku, Tokyo, 162‒0832 Japan 2) Museum of Nature and Human Activities, Hyogo, Yayoigaoka, Sanda, Hyogo, 669–1546 Japan 3) Laboratory of Entomology, Obihiro University of Agriculture and Veterinary Medicine, Inada, Obihiro, Hokkaido, 080–8555 Japan Abstract We report the results of our reexamination of type specimens of longhorned beetles in the Shujiro Hirayama collection preserved in the Museum of Nature and Human Activities, Hyogo. Eight holotypes were reidentified, and their habitus and labels were photographed. Of these, seven were originally described by Matsushita (1941) and one by Ohbayashi (1941a). The following taxonomic changes were proposed in accordance with the results of our reexamination of these holotypes: Acrocyrtidus longipes (Matsushita, 1941) is treated as a junior synonym of Acrocyrtidus elegantulus elegantulus (Matsushita, 1933); Novorondonia bisignata (Hayashi, 1974) is treated as a junior synonym of Novorondonia hirayamai (Matsushita, 1941), comb. nov.; Eutaenia formosana Matsushita, 1941 is treated as a junior synonym of Peblephaeus ziczac (Matsushita, 1940). Introduction label are demarcated by double quotations (“ ”), and English translation for Japanese notation follows immediately after in Shujiro Hirayama (1887–1954) was a famous entomologist parentheses. Two types of appended labels are provided for all active in early days of the Japanese entomology. He operated type specimens, of which, the holotype label clearly indicates the Hirayama Museum in Inokashira Park, Tokyo, and “holotype” in red letters with the original name, and the published the entomological journal “Mushi no Sekai” as determination label shown with the updated scientific name. well as colour illustrated books such as “Illustrated Guide of Thousand Insects in Color (Hirayama, 1933, 1937 (2nd Type Specimens of Longhorned Beetles in ed.))” and “Illustrated Guide of Beetles in Color (Hirayama, Hirayama Collection 1940)”. His insect collection was organized for the purpose of exhibition at the museum, but specimens of longhorned Dymasius hirayamai Matsushita, 1941 beetles are especially numerous because his close colleague, (Fig. 1) Kazuo Ohbayashi, an excellent specialist of the group, had assisted him in sorting and classification (Suda, 2009, 2011). Dymasius hirayamai Matsushita, 1941: 153; type locality: In addition, Masaki Matsushita and K. Ohbayashi studied this “Formosa: Nanjin-san”. collection and published several papers including descriptions Dymasius (s. str.) hirayamai: Gressitt, 1951: 144 [status of new taxa (Matsushita, 1941; Ohbayashi, 1941b, 1948). (subgenus)]. After Hirayama’s death, his collection was transferred to the Dymasius (Elydnus) hirayamai: Nakamura, Makihara & Saito, Chigusagawa Green Life Insect Museum, Hyogo, and then, 1992: 25 [status (subgenus)]. with the closing the museum in 2008, to the Museum of Nature and Human Activities, Hyogo (Suda, 2009; Matsuda & Type specimen examined. Dymasius hirayamai Matsushita, Yamauchi, 2019). 1941: ♀ (holotype; MNHA), “Nanzinzan” “Formosa” “10. 4. 平山コレクション As mentioned above, the longhorned beetle specimens in 1939” / “Type” / “ (Hirayama Collection)” the Hirayama collection are very valuable and include type “15. C 17” / “HOLOTYPE” “Dymasius hirayamai” specimens, but no researchers had reexamined them during “Matsushita, 1941” “Appended label by” “Matsuda,” “Niisato the succeeding generations, so the actual taxonomic situation & Yamauchi, 2019” / “Dymasius” “hirayamai” “Matsushita, of these taxa remains unknown. Recently, we reexamined 1941” “Det. K. Matsuda, T. Niisato” “& T. Yamauchi, 2019”. these specimens in the Museum of Nature and Human Distribution. Taiwan; Japan (Yonaguni Is., Ryukyus). Activities, Hyogo, and reconfirmed a total of eight holotypes of the longhorned beetles described by Matsushita (1941) and Acrocyrtidus elegantulus elegantulus Ohbayashi (1941a). In the following paragraphs, we report the (Matsushita, 1933) results of our reexamination. (Fig. 2) Lautitia elegantula Matsushita, 1933: 226, pl. 2, fig. 12; type Materials and methods locality: “Formosa (Kuskus)”. Materials used in the present study are all from the Acrocyrtidus elegantulus: Hayashi, 1962: 10 [combination]. collection preserved in the Museum of Nature and Human Acrocyrtidus elegantulus elegantulus: Löbl & Smetana, 2010: Activities, Hyogo (MNHA). 201 [status (subspecies)]. Label data of specimens examined are quoted verbatim, Mausaridaeus longipes Matsushita, 1941: 152; type locality: attached labels are separated by a slash (/), lines of the same “Formosa”. Syn. nov. Ⓒ Japanese Society of Systematic Entomology 208 Niisato, T., K. Matsuda and T. Yamauchi Type specimen examined. Mausaridaeus longipes Type specimen examined. Ropica formosana var. Matsushita, 1941: ♂ (holotype; MNHA), “Kuraru” “Formosa” hirayamai Matsushita, 1941: ♀ (holotype; MNHA), “Mt. “11. 4. 1939” / “Type” / “HOLOTYPE” “Mausaridaeus Taihei” “Formosa” “27. 7. 1935” / “Type” / “Ropica longipes” “Matsushita, 1941” “Appended label by” formosana” “Schwarzer var.” “hirayamai mihi.” “det. “Matsuda,” “Niisato & Yamauchi, 2019” / “Acrocyrtidus” Matsushita” / “ 平山修次郎 (Shujiro Hirayama)” “ コレクション “elegantulus elegantulus” “(Matsushita, 1933)” “Det. K. (Collection)” / “HOLOTYPE” “Ropica formosana” “Schwarzer Matsuda, T. Niisato” “& T. Yamauchi, 2019”. var. hirayamai” “Matsushita, 1941” “Appended label by” Distribution. Taiwan. “Matsuda,” “Niisato & Yamauchi, 2019” / “Novorondonia” Notes. Based on the original description, Mausaridaeus “hirayamai” “(Matsushita, 1941)” “Det. K. Matsuda, T. longipes Matsushita, 1941 is very similar to the male of Niisato” “& T. Yamauchi, 2019”. Lautitia elegantula Matsushita, 1933 (= Acrocyrtidus Distribution. Taiwan. elegantulus elegantulus (Matsushita, 1933)) and had Notes. In addition to the holotype of Ropica formosana suspected it to be its junior synonym. However, this problem var. hirayamai Matsushita, 1941, there is one specimen had remained because the holotype of the former had not identified as this taxon in the Hirayama collection. According been reexamined. Our examination resolves this longstanding to the original description by Matsushita (1941), this taxon is concern and identifies Mausaridaeus longipes as the male of distinguished from the nominotypical form of R. formosana Lautitia elegantula. by “1. Die Flügeldecken sind rotbraun, ungefleckt”, “2. Die Fühler sind verhältnismässig dicker als bei der Stammform”, Chlorophorus kanekoi Matsushita, 1941 “3. Der Körper viel Kleiner: 4 mm”, and the data of “Typus” (Fig. 3) is “Berg Taihei, 27. VII, 1935, im Museum HIRAYAMA zu Tokyo”. The original description strongly corresponds to the Chlorophorus diadema Motschulsky var. kanekoi Matsushita, characteristics of the specimen shown in Fig. 4, and there is 1941: 154; type locality: “Formosa: Kayahara”. no doubt that this specimen is the holotype from the data of Chlorophorus kanekoi: Hayashi, 1974: 30 [status (species)]. the attached label. Another specimen with a determination label written by the author (Masaki Matsushita) is different Type specimen examined. Chlorophorus diadema var. from the original description in colouration and body length kanekoi Matsushita, 1941: ♀ (holotype; MNHA), “Kayahara” as well as in collection label data. “Formosa” “29. 5. 1938” / “Type” / “Chlorophorus” “diadema This taxon was described as a variety of Ropica formosana var.” “kanekoi mihi.” “det. Matsushita” / “平山修次郎 (Shujiro Bates, 1866, but according to the generic definitions (Breuning, Hirayama)” “ コレクション (Collection)” / “HOLOTYPE” 1962; Rondon & Breuning, 1970), it belongs to the genus “Chlorophorus diadema var.” “kanekoi” “Matsushita, 1941” Novorondonia Özdikmen, 2008 based on the markedly thick “Appended label by” “Matsuda,” “Niisato & Yamauchi, 2019” antennae and distinctly longer antennomere III than in IV. / “Chlorophorus” “kanekoi” “Matsushita, 1941” “Det. K. Rondonia bisignata Hayashi, 1976 (= Novorondonia bisignata Matsuda, T. Niisato” & T. Yamauchi, 2019”. (Hayashi, 1976)) is treated as a junior synonym of this taxon Distribution. Taiwan. based on the description and figures in Hayashi (1976) and Notes. The correct identification of Chlorophorus kanekoi Chou (2008) . Matsushita, 1941 through reexamination of the holotype is very important for the taxonomic study of clytine beetles from Peblephaeus ziczac (Matsushita, 1940) Taiwan. Hayashi (1974) upgraded this taxon to an independent (Fig. 5) species from C. diadema (Motschulsky, 1854) without reexamining the holotype in the Hirayama collection. It had Etymestia ziczac Matsushita, 1940: 54; type locality: “Formosa long been questioned whether his treatment was truly correct (Musha)”. since there are several species of the genus Chlorophorus from Cereopsius ziczac: Breuning, 1961 : 350 [combination]. Taiwan, which are similar in maculation on the pronotum and Blephephaeus ziczac: Yokoyama, 1971: 97, 99, fig. 2 elytra. Our reexamination supports Hayashi’s (1974) treatment [combination]. without doubt. Peblephaeus ziczac: Kusama & Takakuwa, 1984: 13 [combination]. Novorondonia hirayamai (Matsushita, 1941), Eutaenia formosana Matsushita, 1941: 156; type locality: comb. nov. “Formosa: Kuskus”. Syn. nov. (Fig.