Brunsonia chelanomagna, 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 : 45

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.4341614

persistent identifier

https://treatment.plazi.org/id/131D87EF-FF85-FFB4-FFDC-5CF8FC42F8D0

treatment provided by

Felipe

scientific name

Brunsonia chelanomagna
status

sp. nov.

Brunsonia chelanomagna View in CoL , new species

Figs. 180, 181 View FIGS

Types: Male holotype, five male and 11 female paratypes from WASHINGTON: Chelan Co., Lake Chelan , Wenatchee National Forest , Fields Point , elev. 360 m., 47.9699°N, - 120.2160°W, collected 26 October 2007, by W. Leonard, J. Baugh GoogleMaps .

Diagnosis: Distinct from the syntopic B. chelanoparva in the distinctly pyramidal anterior gonopods, the posterior gonopod coxites lacking process a, and in having femoral knobs on legpairs 3 and 4, as opposed to 4 and 5.

Etymology: The species name is a combination of Lake Chelan, the type locality, and Latin magna, noting the fact that it is the larger of two species of Brunsonia syntopic there.

Description: Male holotype: Length, 15–15.5 mm. Nineteen ocelli in triangular patch. Metazonites with poorly developed shoulders on all trunk segments, segmental setae short, acute, curved. Color pale tan, with transverse bands of purplish brown on metazonites, pale spot surrounding outermost segmental setae, similar but lighter bands on prozonites. Legpairs three to seven encrassate as usual, femoral knobs present on legpairs three and four. Anterior gonopods ( Fig. 180 View FIGS ) broad at base, quickly tapering to acute tip, tip posteriorly curved, dorsolateral pit large, deep, channel to tip of gonopod trending first lateral, then posterior, ending on short, subapical process. Posterior gonopod coxites ( Fig. 181 View FIGS ) with finger-like projection at tip, strongly curved posteriolaterally, process a evidently lacking, channeled process large, prominent, with large pore basally, rugose or warty area small, restricted. Posterior gonopod prefemur clavate. Legpair 10 enlarged, with glands, legpair 11 prefemora with dorsally directed, curved processes.

Female 15.0–16.0 mm long, nonsexual characters similar to those of male.

Distribution: Known only from the type locality.

Notes: The anterior gonopods are closer in form to those of B. pulchra , but less complex at the tips. As noted above, this species is syntopic with B. chelanoparva at the type locality.

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