Benedictesmus yaquina Shear & Marek, 2021

Shear, William A. & Marek, Paul E., 2021, Three new genera and eighteen new species of miniature polydesmid millipedes from the northwestern United States (Diplopoda, Polydesmida, Polydesmidae), Zootaxa 4975 (1), pp. 81-126 : 116-118

publication ID	https://doi.org/ 10.11646/zootaxa.4975.1.3
publication LSID	lsid:zoobank.org:pub:DB7C9028-3EDF-454F-88D0-336624AD1DC4
DOI	https://doi.org/10.5281/zenodo.4923607
persistent identifier	https://treatment.plazi.org/id/03B18797-FFCA-9D2C-4BA5-00D4DDB821B8
treatment provided by	Plazi
scientific name	Benedictesmus yaquina Shear & Marek
status	sp. nov.

Treatment

Benedictesmus yaquina Shear & Marek , n. sp.

Figs 111–117 View FIGURES 111–116 View FIGURES 117–120 , 135 View FIGURES 133–137

Types. Male holotype and male and female paratypes from 0.6 m west of Elk City , Yaquina River , 44.6233°, - 123.8918°, Lincoln Co., Oregon, collected 20 December 1971 by E. M. Benedict. All types deposited in CAS .

Diagnosis. Distinct from other species of the genus in having an unenlarged, straight epiproct ( Fig. 113 View FIGURES 111–116 ) and four rows of setae on the anterior metazonites ( Fig. 112 View FIGURES 111–116 ), increasing to five rows on the most posterior rings ( Fig. 113 View FIGURES 111–116 ).

Etymology. The species epithet, a noun in apposition, refers to the type locality along the Yaquina River.

Description. Holotype male. Nineteen rings ( Fig. 111 View FIGURES 111–116 ; the telson or 19th ring is concealed in the figure by the crassate anterior legs). Length about 5.5 mm, greatest width 0.62 mm. Head densely setose, cuticle alveolate ( Fig. 112 View FIGURES 111–116 ). Collum with anterior marginal row of 20 setae ( Fig. 112 View FIGURES 111–116 ). Anterior metazonites with four rows of setae, transitioning to four rows ( Fig. 113 View FIGURES 111–116 ) about ring 15, setal tubercles prominent throughout. Alveolate cuticle absent from metazonites posterior to collum. Epiproct ( Fig. 114 View FIGURES 111–116 ) not swollen, relatively long, straight, with extensive alveolate cuticle. Anterior legs crassate ( Fig. 111 View FIGURES 111–116 ), tarsi with sphaerotrichomes. Gonopod ( Figs 115–117 View FIGURES 111–116 View FIGURES 117–120 , 135 View FIGURES 133–137 ) with rather flattened prefemorite. Acropodite short, robust. Pulvillus (p, Fig. 116 View FIGURES 111–116 , 117 View FIGURES 117–120 ) just distal to midlength of acropodite, somewhat elongate. Pulvillar process (pp, Fig. 116 View FIGURES 111–116 , 117 View FIGURES 117–120 ) with short tooth on lateral side. Terminal zone entire (tz, Fig. 116 View FIGURES 111–116 , 117 View FIGURES 117–120 ), with distinct apical tooth. Females similar to males in nonsexual characters.

Distribution. Benton, Douglas and Lincoln Cos., Oregon.

Records: OREGON: Benton Co.: 2.3 mi northwest of Glenbrook on South Fork of the Alsea River access road, 44.3313°, -123.4314°, 1200 ft asl, 4 December 1971, E. M. Benedict, mm; Clemens Park, Seely Creek Road, 0.3 mi from SR34, 44.4092°, -123.4644°, 400 ft asl, 4 December 2005, W. Leonard, C. Richart, mm, ff. Douglas Co.: 3.2 mi northeast of Scottsburg, 43.6617°, -123.7877°, 400 ft asl, 11 December 1971, E. M.Benedict, mm, f. Lincoln Co.: 1.4 mi west of Nashville, 44.6716°, -123.6100°, 600 ft asl, 20 December 1971, E. M. Benedict, mm.