Hydnobius acarinus Peck & Cook, 2009
publication ID |
https://doi.org/ 10.11646/zootaxa.2102.1.1 |
persistent identifier |
https://treatment.plazi.org/id/D718473F-EA0A-0C1D-FF1C-F9A6F0AD577E |
treatment provided by |
Felipe |
scientific name |
Hydnobius acarinus Peck & Cook |
status |
sp. nov. |
Hydnobius acarinus Peck & Cook View in CoL , new species
( Figs. 51 View FIGURE 51 , 52–54 View FIGURES 52–54 )
Type material. Holotype, ♂: UNITED STATES: California: Kern Co.: River Kern, 19.IX.1979, Robert Gordon ( USNM) . Paratypes (1): UNITED STATES: California: ♂, with same data ( USNM) .
Diagnostic description. Body light reddish brown, shining. Larger than H. kiseri , length of pronotum+elytra = 2.7–2.8 mm (males). Head irregularly punctate. Pronotum widest near middle, sides rounded, basal angles obtusely rounded; ratio length:width = 1:1.4; finely punctate with faint reticulate microsculpture. Elytra wider than pronotum, of medium length, ratio length:width = 1:0.7; stria 1 clearly impressed, remaining striae punctate, interval punctures similar to strial punctures, transverse strioles present.
Antennal club ( Fig. 52 View FIGURES 52–54 ) moderately slender, ratio club width:length = 1:3.4; width ratio of antennomeres 7:8:9 = 1.3:1:1.7. Right mandible bidentate, with a submedian tooth; left mandible with tooth on apical one-half of inner margin. Mesoventrite lacking a median longitudinal carina (diagnostic character for separating this species from H. kiseri ). Profemur and mesofemur of male unarmed; male metafemur ( Fig. 53 View FIGURES 52–54 ) with large tooth before apex of posterior margin. Male protibia widened apically; mesotibia with inner margin weakly sinuate, lobed at apex; metatibia ( Fig. 53 View FIGURES 52–54 ) angulate on inner margin near basal one-third, apical two-thirds widened. All tibiae spinose on outer margin. Male. Aedeagus ( Fig. 54 View FIGURES 52–54 ) with median lobe broad, narrowing to acute apex. Parameres narrow, outwardly curved, with two apical setae. Female. Unknown.
Distribution. The species is known only from the type series ( Fig. 51 View FIGURE 51 , star).
Field notes, habitats, and seasonality. The two specimens were probably collected at night at a uv light trap when daytime conditions were sunny, dry, and mild as normal for this dry region of the Sierra Nevada mountains in September (R. Gordon, pers. comm.).
Etymology. Named with reference to the lack of a mesoventral carina, which separates this species from the closely related H. kiseri .
USNM |
Smithsonian Institution, National Museum of Natural History |
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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