Himalcercyon franzi, Jia & Liang & Fikáček, 2020
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publication ID |
https://dx.doi.org/10.3897/dez.67.50078 |
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publication LSID |
lsid:zoobank.org:pub:56BB973D-BE4E-47AE-BC98-C1F1151C41C4 |
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persistent identifier |
https://treatment.plazi.org/id/AF02DECB-FD93-4C0F-BAC8-13498287A831 |
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taxon LSID |
lsid:zoobank.org:act:AF02DECB-FD93-4C0F-BAC8-13498287A831 |
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treatment provided by |
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scientific name |
Himalcercyon franzi |
| status |
sp. nov. |
Himalcercyon franzi sp. nov. Figures 1E-H View Figure 1 , 3 View Figure 3 , 4 View Figure 4
Type locality.
China, Xizang Autonomous Region, Motuo County, track from Dayandong to Hanmi, 2200-2400 m a.s.l. [GPS ca 29.4283N, 95.0498E].
Material examined.
Holotype: CHINA ● 1 ♂; Xizang, Motuo County, Dayandong-Hanmi; 2200-2400 m a.s.l.; 13 Aug 2005, Tang Liang leg.; SYSU [verbatim label data: "CHINA, Xizang, Motuo Coun., Dayandong-Hanmi, alt. 2200-2400 m, 13.viii.2005, TANG Liang leg."].
Paratypes: CHINA ● 9; same data as for holotype; SYSU ● 4; Xizang, Motuo County, Nage-Dayandong; 2900-3300 m a.s.l.; 12 Aug 2005; Tang Liang lgt.; SYSU ● 1; Xizang, Motuo County, Nage-Dayandong; 2900-3300 m a.s.l.; 12 Aug 2005; Tang Liang lgt.; NMPC.
Description.
Form and color. Body size 2.5-2.8 mm (2.6 mm in holotype), body width 1.5-1.7 mm (1.55 mm in holotype), widest at anterior third of elytra, arcuately narrowing posteriad (Fig. 1E View Figure 1 ). Dorsum dark brown; head of some specimens with paler clypeus; pronotal lateral margins yellow brown; elytral apices and posterior half of lateral elytral margins slightly paler; epipleuron reddish brown; antenna, maxillary and labial palpi reddish brown; legs reddish brown, with darker femora.
Head. Clypeus with moderately dense fine setiferous punctures, smooth between punctures. Frons with punctures coarser and somewhat denser than those on clypeus, smooth between punctures. Mentum 2 × wider than long, rugose, with dense coarse punctures (Fig. 3A View Figure 3 ), slightly concave anteriorly. Antenna with pedicel ca 0.2 × as long as scape, pedicel ca. as long as antennomeres 3 and 4 combined, cupule small (Fig. 3D View Figure 3 ).
Thorax. Pronotum with punctation similar to that on frons, interstices without microsculpture; lateral marginal bead shortly overlapping to anterior margin but not to posterior margin, stopping at posterior angle. Scutellar shield smooth, with three to five punctures. Elytral striae sharply impressed (Figs 1E-F View Figure 1 ), striae 6, 8, and 9 not reaching base; intervals with much finer and sparser punctures than on pronotum, each interval puncture bearing a fine short seta (Fig. 3G View Figure 3 ), interstices between punctures smooth. Epipleuron with bare outer and pubescent inner portion delimited from each other by a fine ridge, inner pubescent part narrower than the outer part, reaching the level of posterior part of metaventrite. Mesoventral elevation arrowhead-shaped, ca 2.0 × longer than wide, densely pubescent (Fig. 3C View Figure 3 ). Metaventrite with large median elevation, finely and sparsely punctate (Fig. 3F View Figure 3 ), interstices without microsculpture; lateral portions microsculptured with sparse coarse punctures and dense pubescence. Legs with trochanters densely pubescent, femora with sparse and moderately coarse punctures, interstice between punctures with fine microsculpture consisting of transverse lines.
Male genitalia. Middle lobe of abdominal sternite IX wide, shorter than lateral struts (Fig. 1H View Figure 1 ). Aedeagus (Fig. 1G View Figure 1 ) with median lobe ca 0.8 × as long as tegmen; paramere ca 1.5 × as long as phallobase. Paramere gradually narrowed from base to apex, truncate apically, widened inwards to form a process with a few setae. Median lobe broader than paramere, gradually narrowing in apical third, apex pointed, gonopore subapical.
Etymology.
The species is named after Dr Franz Hebauer, a German taxonomist of the Hydrophiloidea who recognized and described Himalcercyon as a subgenus of Cercyon .
Distribution.
Only known from the type locality in the eastern Himalaya (Motuo county, Xizang Autonomous Region, China) (Fig. 4 View Figure 4 ).
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.