Orizabus pinalicus, Warner, 2011
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publication ID |
https://doi.org/ 10.5281/zenodo.5160884 |
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https://treatment.plazi.org/id/03BA87C3-BC4F-FF8C-F9E9-FB6495066B9D |
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Felipe |
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scientific name |
Orizabus pinalicus |
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sp. nov. |
Orizabus pinalicus new species
Fig. 8 View Figures 8-9 , 10 View Figures 10-11 , 12, 13 View Figures 12-15 , 22 View Figures 20-25 , 30 View Figures 26-31
Types. Holotype male and allotype female labeled: “Pinal Peak, Gila Co., Ariz., 7600’, in oak + aspen litter, J. C. Bequaert”.
Paratypes (23 males, 35 females) from the following localities: USA: Arizona: “ Gila Co., Pinal Mts. , vi, F. H. Parker ” ; same except “ vii-20-1947 ” ; same except “ vii-31-1936 ” ; same except “ viii-7-1938 ” (6) ; same except “ viii-21-1935 ” (8) ; same except “viii-
22-1935” (2); same except “ ix-1-1932 ”; same except
“ ix-7-1936 ” (5); same except “ ix-19-1935 ”; same
except “vii, Duncan, Parker”; same except “vi-4-
1933, elev. 7800 ft. ” (2); same except “ vii-7-1979,
sawmill”; same except “ viii-17-1932, R. A. Flock”
(3); same except “ vi-12-1932, 7000 ft. ”; same ex-
cept “ vi-26-1932 ” (2); same except “ vii-9-1936, E.
D. Ball”; “base of Pinal Mts., D. K. Duncan” (2);
“Gila Co., Pinal Mts., Pinal Peak, 2304m, vi-27-
1979, S. McCleve”; “Globe, vii-1930, Duncan Coll.”;
same except “ vi-5-1964, Stephan leg.”; same ex-
cept “ viii-1937, Parker” (2); “Payson, ix-3-1938, at
light”; “Gila Co., (Sierra Ancha Mts.), Workmen
Ck., 21 mi. S. Young, viii-7-1988, W.B.Warner”;
“Gila Co., 8 mi. S. Wkmn Cr. [=Workmen Ck.], 5-
8-1964, J. Williams”; “Graham Co., Graham Mt., Map 2. Orizabus ligyroides .
viii-1972, R. Lenczy”; “Graham Co., Pinaleno Mt., Wet Cn., ix-16-1972, D. Richman”; “Graham Co., Pinaleño Mts., Wet Cyn., vi- 12-1979, 1840 m, S. McCleve”; “Graham Co., Pinaleno Mts., Hwy. 366, 9.7 mi. W jct. Hwy. 191, Wet Canyon, vi-18-1994, E. Barchet, ex pit fall trap”; “Wet Cyn., Peña Lena [sic] Mts., iv-7-1961, F. Werner”; “Graham Mts., Wet Cyn., vi-21-1975, K. Stephan”; same except “ vi-24-1972 ” (2); “Graham Mts., viii-9-1955, 7000’, Butler-Noon”; “Graham Co., Galiuro Mts., Ash Cyn., viii-16-17- 1982, 1600 m, S. McCleve, G. E. Ball, D. Maddison”.
Additional specimens examined but not designated as paratypes (6): Arizona: “ Cochise Co., Portal , viii-4-1973, L. L. Lampert, light” ( FSCA) ; “ Cochise Co., Chiricahua Mts., Ash Spring , vii-9-1976, at light, McCleve & Daneker” ( SMCC). Texas: “ Chisos Mts. , vi-1931 ” ; “ Chisos Mts., Juniper Canyon , vii-8-1928, F. M. Gaige ” ( USNM) ; same except “ vii-11-1928 ” ( USNM) ; “ Brewster Co., Big Bend Park , vii-7-1937, R. H. Baker ” ( USNM) .
Holotype and allotype are deposited in the Florida State Collection of Arthropods, Gainesville. Paratypes or specimens are deposited in the collections of ASUT, CASC, CNCI, FSCA, SEMC, TAMU, UAIC, UCDC, BCRC, HAHC, SMCC, RACC, and WBWC.
Diagnosis. Clypeal carina bidentate, teeth separated by more than a dorsal eye width; protibia of male edentate, of female tridentate with apex oblique; anterior margin of pronotum not posteriorly expanded, disc without broad concavity behind anterior margin; male with paramera apically incised.
Description. Holotype male, length 18.5 mm, width at humeri 8.0 mm, widest width (apical fourth of elytra) 10.5 mm. Color dark reddish brown; body elongate, rounded behind, sides rather straight and converging from posterior one-fourth of elytra to anterior one-third of pronotum. Head closely punctatorugulose except at base and in narrow area along posterior base of transverse clypeal carina. Clypeus subsemicircular, outer margin weakly reflexed behind transverse carina, sinuate at base of ocular canthus; transverse carina at apical one-fifth of clypeus, carina obtusely emarginated to form two widely separate lobes, highest laterally; frontoclypeal suture subangulate (angle opening anteriorly) to low medial tubercle, clypeal side of tubercle slightly overhanging front. Eyes small, in dorsal view maximum width about one-sixth as wide as minimum dorsal interocular width. Pronotum about one-sixth wider than long, broadest near posterior angles, lateral margins converging but rather straight until more rapidly converging in anterior one-third; posterior margin vaguely trilobed, anterior angles slightly obtuse; posterior angles broadly rounded but nearly right; marginal bead continuous, inner edge of posterior bead angularly emarginate at middle, inner edge of anterior marginal bead not posteriorly produced; disc without anteromedial fovea; contiguously variolately punctate anteriorly, punctures becoming smaller and sparse posteriorly; midline nearly impunctate in posterior half. Scutellum parabolic, impunctate. Elytron distinctly umbilicately striate-punctate, impunctate between striae except in more or less single rows in anterior half of first interval, posterior half of second interval, between humeral and apical umbones in third interval, and in posterior two thirds of fourth and fifth intervals. Epipluron distinct to about apical one-fifth, of nearly even width throughout. Pygidium convex, transversely subtriangular, basal margin convexly arcuate; apex narrowly truncate; subapical edge of disc forming transverse gibbosity which overhangs excavated apical submargin; disc scabriculously punctulate, sculpture strongest basally (especially in basal angles), surface becoming smoother and shiny medioapically. Venter with thoracic sternites and coxae densely setigerously punctate, setae ferrugineous; metasternite glabrous medially. Abdominal sternites each with transverse row of setigerous punctures, row mediodiscal in basal sternites, apicomarginal in apical sternite, medially effaced in penultimate three sternites; penultimate sternite about twice as long as each more proximal sternite; apical sternite apicomedially emarginate. Protibia with dorsal margin edentate, blade-like, apex acute ( Fig. 8 View Figures 8-9 ). Metatibia with submedial transverse carina distinct, but with ventral terminus not forming angular tooth. Paramere ( Fig. 22 View Figures 20-25 , 30 View Figures 26-31 ) apically notched because of ventrally excavated “shelf” in apical one-fourth, shelf in lateral view lunulate.
Allotype female: length 20.0 mm, width at humeri 9.0 mm, widest width 11.5 mm. Similar to male except abdomen more convex; pygidium less convex, with free submargin impressed each side of apex; apical abdominal sternite longer and not apicomedially emarginate. Protibia tridentate with apex oblique ( Fig. 10 View Figures 10-11 ).
Variation. Paratypes: Length male 17.0 to 19.5 mm, female 17.0 to 21.5 mm; width at humeri male 7.5 to 8.0 mm, female 7.0 to 9.5 mm; widest width male 10.5 to 11.0 mm, female 10.0 to 12.0 mm. Color varies widely from (most commonly) medium reddish brown to piceous. Surface sculpture varies moderately in intensity. Body shape varies between more parallel-oblong to moderately pyriform. Many males have the area immediately proximal to the external parameral “shelf” set with one to several small mucronate tubercles.
Non-paratypes: The two large, piceous female specimens collected in the Chiricahua Mts., Arizona, (Portal and Ash Spring) differ from more northern specimens in having smoother and less convex elytral striae and intervals, finer punctuation, and in having the first interval punctate in the anterior twothirds. The Chisos Mts., TX, males have the anterior pronotal marginal bead posteriorly expanded slightly at the midline in the form of a small deflexed angle. The Chisos Mts. specimens also are larger than average (males = 19.5 to 21.5 mm, female = 22.5 mm long), have the frontoclypeal tubercle spiniform, and the males have larger mucronate tubercles in the area immediately proximal to the parameral “shelf”. The darker color and stronger armature are similar to differences seen in males of O. clunalis and O. pyriformis from that general area and may be parallel adaptations to the local environment.
Etymology. This species is named both for the type locality and its common habitat described by the Spanish locality name, “pinal” or pine forest.
US Distribution. Mountains of southeastern and central AZ, and western TX ; expected to occur in the mountains of southern New Mexico, and Sonora and Chihuahua, Mexico, as well.
Remarks. Among the US species of Orizabus , O. pinalicus is distinguished by the following combination of characters: obviously subapical, broadly bilobed clypeal carina; complete pronotal marginal bead that is not tuberculate nor (usually) angularly expanded at its anterior midpoint; apically acute/oblique protibiae which are edentate in males and tridentate in females, and the unique male genitalia.
Orizabus pinalicus is similar in external facies to the Mexican species O. rubricollis Prell , especially the Chisos Mts. specimens here provisionally included in O. pinalicus . They differ in being more pyriform and smaller on average, in having a complete posterior pronotal marginal bead ( O. rubricollis has the posterior marginal bead effaced normally), and in minor sculptural differences. The general male genital form of both species ( Fig. 22, 25 View Figures 20-25 , 30, 31 View Figures 26-31 ) is also similar in that the paramera are both apically and more proximally cleft or toothed; however, the apical cleft is much less developed, and the “shelf” which forms the teeth is much shorter and more appressed in O. pinalicus . In O. rubricollis this structure is nearly perpendicular to the (in dorsal view) thinner paramera, and in lateral view it is arcuate (in O. pinalicus it is nearly straight). Additionally, females of O. rubricollis have edentate protibiae as in males ( Fig. 11 View Figures 10-11 ); O. pinalicus females have tridentate protibiae ( Fig. 10 View Figures 10-11 ). Interestingly, a species in a related genus, Xyloryctes splendidus Prell , also has paramera similar to those of O. rubricollis ; the parameral similarity of O. pinalicus and O. rubricollis may be coincidental. Additional material from the mountains of northern Mexico is needed to provide evidence of the true relationship of these two taxa.
As with the Chisos Mts. specimens, the two females from the Chiricahua Mountains, Arizona, appear to be slight variants of this species, but could represent a distinct taxon. Additional material which includes males from the area should clarify the status of that population.
This species rarely, if ever, comes to light. It is a mountain species collected primarily above 1600 m in pine forests or along riparian areas in juniper woodland. I collected one female on an overcast day at about noon on a dirt road through ponderosa pine forest. The beetle was upside down and slowly flailing its legs as it attempted to right itself. Numerous O. clunalis , but no additional specimens of O. pinalicus , were collected at light that night in the same locality.
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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