Tropimenelytron robustum Gusarov
publication ID |
https://doi.org/ 10.5281/zenodo.155753 |
DOI |
https://doi.org/10.5281/zenodo.6277330 |
persistent identifier |
https://treatment.plazi.org/id/F207683E-6E33-C417-8C38-815EFE16FCA4 |
treatment provided by |
Plazi |
scientific name |
Tropimenelytron robustum Gusarov |
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2. Tropimenelytron robustum Gusarov View in CoL , sp. n. ( Figs. 4554 View FIGURES 45 48 View FIGURES 49 54 )
Sipalia columbica Fenyes (manuscript name).
Type material. Holotype:, UNITED STATES: Oregon: Clackamas Co.: 1.5 mi. S jct. US 26 & Ore35, 3500’, litter, mixed conifer forest (A. Newton, M. Thayer), 11.vii.1975 ( FMNH).
Paratypes: CANADA: British Columbia:, 25 mi. E Hope (Campbell & Smetana), 21.vi.1968;, Mt. Garibaldi, 14 km N Squamish, 4000' (Campbell & Smetana), 30.v.1968 (all CNCI);, 2, Shawnigan Lake ( CASC).
Diagnosis. Tropimenelytron robustum differs from T. americanum in having mat pronotum and head, both with strong microsculpture; smaller eyes (temples 2.52.7 times as long as eyes) and narrower apex of median lobe of aedeagus in parameral view ( Figs. 50, 52 View FIGURES 49 54 and 40, 42 View FIGURES 39 44 ). Tropimenelytron robustum differs from T. californicum in having longer body and broader apex of median lobe of aedeagus in parameral view ( Figs. 50, 52 View FIGURES 49 54 and 60, 62 View FIGURES 59 64 ).
Description. Length 3.43.7 mm. Body reddish brown, elytra and legs slightly lighter.
Head surface mat, on disk with strong isodiametric microsculpture, making hard to see fine and slightly asperate punctation, distance between punctures equal to 23 times their diameter. Temples 2.52.7 times as long as eyes. Second antennal article 1.1 times as long as third, article 4 slightly transverse (ratio 1.6), articles 510 strongly transverse (ratio 1.8 2.0), last article longer than two but shorter than three preceding articles combined.
Pronotum subquadrate, 1.2 times as wide as head, width 0.530.57 mm, length 0.51 0.56 mm, length to width ratio 0.97, surface mat, microsculpture and punctation as on head. Elytra wider (0.670.73 mm) and as long (0.510.54 mm, measured from humeral angle) as pronotum (elytral length to pronotal length ratio 0.99), 1.3 times as wide as long, glossy, with isodiametric microsculpture, meshes larger than on pronotum, punctation fine and asperate, distance between punctures equal to their diameter.
Abdominal terga glossy, with fine and weak isodiametric microsculpture, with fine asperate punctation, on terga 35 distance between punctures equals 24 times their diameter, on terga 67 punctation finer, distance between punctures equals 36 times their diameter.
Male secondary sexual characters include longitudinal carina along anterior half of sutural margin of each elytron, tiny medial knob at posterior margin of tergum 3, small medial knob at apical third of tergum 4, short medial carina in front of anterior margin of tergum 7, and uneven posterior margin of tergum 8 ( Fig. 45 View FIGURES 45 48 ). Posterior margin of male sternum 8 convex ( Fig. 46 View FIGURES 45 48 ). Aedeagus as in Figs. 5054 View FIGURES 49 54 .
Female tergum 8 with slightly convex posterior margin ( Fig. 47 View FIGURES 45 48 ), sternum 8 with straight posterior margin ( Fig. 48 View FIGURES 45 48 ). Spermatheca as in Fig. 49 View FIGURES 49 54 .
Distribution. Known from Western United States (Oregon) and Canada (British Columbia) ( Fig. 65 View FIGURE 65 ).
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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