Brunsonia digitata, Shear & Richart & Wong, 2020

Shear, William A., Richart, Casey H. & Wong, Victoria L., 2020, The millipede family Conotylidae in northwestern North America, with a complete bibliography of the family (Diplopoda, Chordeumatida, Heterochordeumatidea, Conotyloidea), Zootaxa 4753 (1), pp. 1-78 : 41-42

publication ID

https://doi.org/ 10.11646/zootaxa.4753.1.1

publication LSID

lsid:zoobank.org:pub:AA9F66B3-EF8C-4F6B-8F35-0BCBEE5122ED

DOI

https://doi.org/10.5281/zenodo.4341575

persistent identifier

https://treatment.plazi.org/id/131D87EF-FF81-FFB1-FFDC-5F98FB34FDA1

treatment provided by

Felipe

scientific name

Brunsonia digitata
status

sp. nov.

Brunsonia digitata View in CoL , new species

Figs. 153–158 View FIGS View FIGS

Types: Male holotype from WASHINGTON: Grays Harbor Co., FS-2153 5.3 mi N of Kelley Road, Canyon River basin, elev. 160 m., 47.3035°N, - 123.5081°W, collected 12 December 2004, by W. Leonard GoogleMaps .

Diagnosis: This species is unique among others of Brunsonia due to the lack of femoral knobs on any of the male pregonopodal legs.

Etymology: The species name is an adjective referring to the fingerlike projection on the anterior gonopods.

Description: Male holotype: Length, 9.0 mm. 19–21 ocelli in triangular eyepatch. Metazonites with well-developed shoulders on all trunk segments, on midbody segments shoulders nearly level with midline dorsum, with angular posterior corners, segmental setae quite short, spatulate to clavate. Legpairs three to seven encrassate, prefemora curved, pair three the largest, with conspicuously swollen femora mesally depressed ( Fig. 157 View FIGS ), only femora 5 with knobs ( Fig. 158 View FIGS ); legpair 2 smaller than legpair three, but also encrassate, femoral knobs absent. Anterior gonopods ( Figs. 153 View FIGS , 155 View FIGS ) upright, parallel, lobe-like, posterior surface wrinkled, with distinctive lateroposterior fingerlike branch. Posterior gonopod coxites ( Figs. 154 View FIGS , 156 View FIGS ) complex, mesally with 3 or 4 long, thin pseudoflagella, main body of coxite with deep groove, coxite tip with two recurved teeth. Legpair 10 enlarged, with glands, legpair 11 prefemora with dorsally directed stout processes.

Females not collected.

Distribution: WASHINGTON: Grays Harbor Co., same as type locality except 13 October 2003. Jefferson Co., Queets River Road 5.8 mi E of US-101, elev. 90 m., 47.5724°N, - 124.1356°W, 13 February 2005, W. Leonard, C. Richart, from the litter and woody debris of a mixed forest including Alnus rubra , Tsuga heterophylla , and Polystichum munitum , m.

Notes: Most of the usual processes posterior on the posterior gonopod coxite seem to be absent in this species; the labelling of the figures reflects speculations about process identity. The anterior gonopod is also unusual, but taking all things under consideration, Brunsonia seems to be the best placement for this species.

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