Microichthyurus bimaculatus Y. Yang, Lin & Liu, 2025
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publication ID |
https://doi.org/10.3897/dez.72.145885 |
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publication LSID |
lsid:zoobank.org:pub:CF9D23E3-A992-4179-8BEE-83F159D358EF |
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DOI |
https://doi.org/10.5281/zenodo.15594239 |
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persistent identifier |
https://treatment.plazi.org/id/C694BCF9-9B66-5CD3-B9EE-A2AE31C1F10E |
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treatment provided by |
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scientific name |
Microichthyurus bimaculatus Y. Yang, Lin & Liu |
| status |
sp. nov. |
Microichthyurus bimaculatus Y. Yang, Lin & Liu sp. nov.
Figs 15 C View Figure 15 , 16 C View Figure 16 , 17 C View Figure 17 , 20 A View Figure 20 , 21 A ‒ D View Figure 21
Etymology.
The specific name is derived from the Latin bi - (two) and macula (spot), referring to its elytra with two black spots.
Type material.
Holotype. China ‒ Hainan Prov. • ♂; Baisha, Hongxin to Hongkan Reservoir ; 516 m; 16-XI-2008; M. Y. Lin leg.; IZAS.
Diagnosis.
The species can be easily distinguished from all other species of Microichthyurus by the characteristic body coloration, in which elytra mostly yellow, black at humeri, and having a pair of small oblong black spots on disc. Also, its aedeagus is distinctive, with median lobe long sac-shaped, longer than left ventral paramere.
Description.
Body length: 5.2 mm; body width: 1.0 mm.
Male (Fig. 20 A View Figure 20 ). Coloration. Body black, antennomeres I ‒ IV yellow ventrally, prothorax yellow, pronotum with a large black marking in center of disc; scutellum yellow; elytra brown at the part which near pronotum posterior margin and yellowed posteriorly, with a pair of black oblong spots in the middle.
Eyes moderately large, interocular distance about 0.7 times as wide as diameter of an eye. Antennae extending to posterior margin of abdominal tergite IV, antennomeres II about 1 / 3 length of I, III about twice longer than II, IV ‒ X subequal and about 1.5 times longer than III.
Pronotum 1.1 times wider than long, anterior margin slightly arcuate and posterior margin strongly bisinuate, lateral margins subparallel, anterior angles rounded, and posterior angles nearly rectangular. Elytra 1.2 times longer than wide, 1.7 times longer than pronotum, with lateral margins subparallel, sutures slightly dehiscent from the base, distance between sutures slightly wider than width of the elytron, apices rounded.
Abdominal tergite VIII (Fig. 15 C View Figure 15 ) 1.3 times longer than wide, with lateral margins slightly arcuate, postero-lateral projections about half length of the tergite, and feebly sinuate at inner margins. Abdominal sternite VIII (Fig. 16 C View Figure 16 ) bilobed, with lateral portions nearly inverted triangular, as long as wide, broadly fused at basal half part, inner apical angles rounded and outer apical angles acute, each with a finger-like projection in middle of posterior margin. Proctiger (Fig. 17 C View Figure 17 ) semicircular, almost surrounded by paraproct and covered with a few long pubescence on surface. Paraproct (Fig. 17 C View Figure 17 ) subsquare and slightly emarginate in middle and dentated on both sides of posterior margin, around which covered with long pubescence, with tergal flange long and about 4.2 times as long as paraproct, basal 1 / 4 part strongly broadened and rhombic, nearly as long than wide, apical 3 / 4 part slender and bent inwards.
Aedeagus (Fig. 21 A ‒ D View Figure 21 ): left ventral paramere rod-like, slender, and progressively thinned apically, rounded at apex (Fig. 21 A, D View Figure 21 ); left dorsal paramere short and lamellar, about half length of left ventral paramere, widely rounded at apical margin (Fig. 21 B View Figure 21 ); right paramere rod-like, as long as and thicker than left ventral paramere, acute at apex (Fig. 21 D View Figure 21 ); median lobe strongly sclerotized and 1.5 times longer than parameres, grooved at basal part, elongate sac-shaped at apical part, rounded at apex (Fig. 21 A ‒ D View Figure 21 ).
Female. Unknown.
Distribution.
China (Hainan).
| IZAS |
Institut Zoologii Akademii Nauk Ukraini - Institute of Zoology of the Academy of Sciences of Ukraine |
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.
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SuperFamily |
Elateroidea |
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SubFamily |
Chauliognathinae |
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Tribe |
Ichthyurini |
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