Calambus taiwanensis Arimoto, 2020
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publication ID |
https://doi.org/ 10.11646/zootaxa.4853.1.2 |
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publication LSID |
lsid:zoobank.org:pub:6D8FBF75-C96D-4B70-8BC6-BDB2C920C440 |
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DOI |
https://doi.org/10.5281/zenodo.4410309 |
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persistent identifier |
https://treatment.plazi.org/id/03B087E0-FFD6-FFFD-7792-017EFDADFD33 |
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treatment provided by |
Plazi |
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scientific name |
Calambus taiwanensis Arimoto |
| status |
sp. nov. |
Calambus taiwanensis Arimoto , sp. n.
( Figures 1–4 View FIGURE 1 View FIGURE 2 View FIGURE 3 View FIGURE 4 )
Etymology. Specific epithet derived from Taiwan, the type locality.
Type material. Holotype. Male , Sung Kang, Nantou County, Taiwan, 4 IV 1971, Kiyoshi Matsuda leg. [CTA001] . Paratypes (2 males, 5 females). 1 female, same data as the holotype [CTA002] ; 1 female, same place as the holotype, S. Takeda leg. [CTA003]; 1 female, Nanshanchi , Nantou County, Taiwan, 12 IV 1972, Kiyoshi Matsuda leg. [CTA004] ; 1 male, same place as the former, 7 IV 1973, Y. Kiyoyama leg. [CTA005]; 1 female, same place as the former, 17 IV 1987, C. Lo leg. [CTA006]; 1 male, Mt. Kuan-tou Shan , Nantou County, Taiwan, 25 IV 1985 (the collector is not stated) [CTA007] ; 1 female, near Puli , Nantou County, Taiwan, 11 VII 2005, F. Y. Huang leg. [CTA008] .
Diagnosis. Body surface generally shining; interspaces between fine punctures distinctly larger than puncture diameter. Body generally black, but elytra dark brown, with outer margin paler. Body covered with yellow white setae. Antennae extending beyond apex of pronotal hind angles by two apical antennomeres in male, but not reaching pronotum posterior lateral apices by apical antennomere in female; antennomere III obconical, slightly longer than II; IV shorter than II–III combined, slightly longer than V. Hind angles of prothorax short, narrow, with apex rounded. Scutellar shield widest at anterior margin; anterior margin slightly rounded; side emarginate anteriorly; posterior margin broadly rounded. Parameres of aedeagus without lateral subapical barb. Female genitalia with robust baculum; vagina with coiled sac; bursa copulatrix without sclerotized piece.
Measurements. Male (n=3, holotype in parentheses). BL: 5.02–5.51 (5.51), BW: 1.54–1.69 (1.69), MBE: 0.58–0.63 (0.63), MAE: 0.84–0.94 (0.94), OI: 143–152 (149), PL: 1.29–1.41 (1.34), PML: 1.14–1.23 (1.16), PW: 1.29–1.40 (1.40), PI: 95.5–100 (95.5), EL: 3.40–3.86 (3.86), EW: 1.54–1.69 (1.69), EI: 221–229 (229), BI: 258–289 (289). Female (n=5). BL: 5.45–6.38, BW: 1.64–1.96, MBE: 0.61–0.71, MAE: 0.85–1.00, OI: 138–144, PL: 1.38– 1.65, PML: 1.21–1.42, PW: 1.41–1.69, PI: 95.7–108, EL: 3.72–4.41, EW: 1.64–1.96, EI: 213–226, BI: 235–279.
Description. Body surface generally smooth and shining, but elytra weakly rough; interspaces between fine punctures distinctly larger than puncture diameter, but larger punctures of anterior edge of pronotum partly overlapping ( Fig. 1A View FIGURE 1 ); large coarse punctures spread all over surface of anterior lobe of prosternum ( Fig. 2F View FIGURE 2 ); punctures of hypomeron near pronotosternal suture large and their interspaces smaller than puncture diameter ( Fig. 2F View FIGURE 2 ). Color. Body generally black, but elytra dark brown, with outer margin paler. ( Fig. 1A, B, C View FIGURE 1 ). Labrum black ( Fig. 2A View FIGURE 2 ). Antennae and mouth parts generally dark brown; mandible black, with apical and internal parts orange ( Fig. 2A View FIGURE 2 ). Legs dark brown, becoming paler apically ( Fig. 1B View FIGURE 1 ). Tergites and sternites VIII‒X yellow brown, but median basal area of tergite VIII and posterior area of sternite VIII translucent ( Fig. 3A, B View FIGURE 3 ). Aedeagus yellow brown ( Fig. 3E, F View FIGURE 3 ). Hairs. Body covered with yellow-white setae ( Fig. 1A, B View FIGURE 1 ). Antennae and mouth parts except for labrum with yellow to brown setae. Setae of legs yellow white becoming yellow apically.
Head. Frons without depression. Supra-antennal carina incomplete medially ( Fig. 2A View FIGURE 2 ); frontclypeal region gradually sloping to base of labrum ( Fig. 2A, B View FIGURE 2 ). Antennomeres I, III, IV and IX–XI longer than wide ( Fig. 2B, C View FIGURE 2 ); II globular, shortest, as long as wide; III obconical, slightly longer than II; IV–X serrate; IV shorter than II–III combined, slightly longer than V. Male. Antennae extending beyond apex of pronotal hind angles by two apical antennomeres ( Fig. 1A View FIGURE 1 ); antennomere IV 1.16–1.35 x as long as wide, 1.74–2.00 x as long as III; V–VIII longer than wide; XI 2.40–2.78 x as long as wide. Female. Antennae not reaching pronotum posterior lateral apices by apical antennomere ( Fig. 1C View FIGURE 1 ); antennomere IV 1.18–1.45 x as long as wide, 1.53–1.68 x as long as III; V–VIII almost as long as wide; XI 1.82–2.14 x as long as wide. Mandible bidentate.
Prothorax sub-trapezoidal, slightly shorter than wide or as long as wide, widest at hind angles; side distinctly rounded, weakly narrowed anterior to hind angles ( Fig. 2D, E View FIGURE 2 ); anterior angles acute; lateral carina extending just behind anterior angles ( Fig. 2B View FIGURE 2 : arrow) to hind angles; hind angles divergent, short, narrow, straight, incurved in some specimens ( Fig. 2D, E View FIGURE 2 ), with apex rounded. Pronotum without median longitudinal depression; median basal tubercle indistinct; median basal furrow poorly developed; sublateral incision near hind angles weak; hind angles without carina. Hypomeron; mesial edge weakly rounded, with impunctate ridge next to pronotosternal suture, carinate anterolaterally ( Fig. 2F View FIGURE 2 : black arrow); posterior margin sinuate, with large emargination near hind angles ( Fig. 2F, G View FIGURE 2 ). Prosternum in profile slightly concave anterior to mesocoxal cavity ( Fig. 2H View FIGURE 2 : arrow); anterior lobe broadly rounded, exceeding anterior angles of prothorax ( Fig. 1B View FIGURE 1 ), in profile strongly inclined (at 39–54 degrees against prosternal horizontal line, Fig. 2H View FIGURE 2 : red line) and in some specimens concave just behind anterior lobe. Prosternal spine in profile strongly inclined (at 24–36 degrees against prosternal horizontal line, Fig. 2H View FIGURE 2 ), incurved, without subapical tooth; sides in ventral view straight ( Fig. 2G View FIGURE 2 ); ventral margin of dorsal lobe in profile slightly sinuate ( Fig. 2H View FIGURE 2 : yellow line); apex in ventral view rather rounded ( Fig. 2G View FIGURE 2 ), in profile rounded ( Fig. 2H View FIGURE 2 ). Pronotosternal sutures not grooved, moderately opened ( Fig. 2F View FIGURE 2 : white arrow). Scutellar shield ( Fig. 2I View FIGURE 2 ) 1.11–1.49 x as long as wide, widest at anterior margin, strongly inclined anterior-downwards; anterior margin slightly rounded, with transversely micro-striated ridge, laterally bent downwards; side emarginate anteriorly and then convex posteriorly; posterior margin broadly rounded. Borders of mesosternal cavity horizontal anteriorly and strongly declivous posteriorly ( Fig. 2H View FIGURE 2 : green line); posterior margin of mesosternite between mesocoxae wider than half width of mesocoxa ( Fig. 2G View FIGURE 2 ). Mesepisternum reaching mesocoxal cavity ( Fig. 2F View FIGURE 2 : triangle). Metasternum sulcate medially and behind mesocoxae ( Fig. 1B View FIGURE 1 ). Elytra convex; outmost interval narrowly extending sideways, forming flat plate, with a lateral carina; striae I–V grooved, but V partly reduced; remaining striae ungrooved and defined only by rows of punctures; apices rounded. Hind wings complete. Legs simple; tarsomeres I–IV becoming shorter apically; V longest.
Abdomen. Ventrite V 0.59–0.67 x as long as wide. Male. Tergite VIII ( Fig.3A View FIGURE 3 ) ca. 0.70 x as long as wide; apical margin strongly prominent and broadly rounded. Sternite ( Fig. 3B View FIGURE 3 ) VIII without median notch; posterior angles slightly prominent and rounded. Tergite IX ( Fig.3C View FIGURE 3 ) longer than wide, ca. 1.4 x length of tergite X; median notch rounded. Tergite X ( Fig.3C View FIGURE 3 ) ca. 1.5 x as long as wide; posterior margin rounded. Sternite IX ( Fig.3D View FIGURE 3 ) ca. 2.9 x as long as wide, rounded apically, concave laterally. Female. Tergite VIII ca. 0.95 x as long as wide ( Fig. 4B View FIGURE 4 ). Sternite VIII with side almost parallel on basal half ( Fig. 4C View FIGURE 4 ); spiculum ventrale robust, ca. 2.0 x as long as sternite VIII ( Fig. 4A View FIGURE 4 ).
Genitalia. Male ( Fig. 3E, F View FIGURE 3 ). Basal piece ca. 0.25 x total length of aedeagus. Median lobe exceeding apices of parameres; basal struts ca. 0.20 x total length of median lobe. Parameres separated ventrally, without lateral subapical barb, not expanded apically; apex with several setae dorsally ( Fig. 3G View FIGURE 3 ), with one seta ventrally ( Fig. 3H View FIGURE 3 ), with two setae apically ( Fig. 3G, H View FIGURE 3 ). Female. Baculum robust, ca. 2.4 x as long as coxites ( Fig. 4D View FIGURE 4 ); coxites not segmented ( Fig. 4E, F View FIGURE 4 ), with some setae at each side; stylus with a seta near apex. Vagina with coiled sac extending from ventral side ( Fig. 4D View FIGURE 4 : arrow); bursa copulatrix globular, without sclerotized structures.
Distribution. Taiwan: Nantou County.
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.