Bollmanella bombus, 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 : 30-31

Bollmanella bombus , new species

Figs. 111–114

Types: Male holotype and 2 female paratypes from IDAHO: Idaho Co., Idaho Panhandle National Forests, Bumblebee Creek , elev. 685 m., 47.6325°N, - 116.2965°W, collected 6 November 2004, by W. Leonard, C. Richart, J. Baugh from the litter and woody debris of a mixed forest including Tsuga heterophylla , Populus trichocarpa , Abies grandis , Pinus monticola , and Rubus parviflorus . Gonopods of the holotype male are on SEM stub WS30-15, deposited with the specimen (CAS).

Diagnosis: Distinct from other Bollmanella species in the two thin branches of the posterior gonopod coxites and a basal, bulbous projection from the posterior gonopod prefemur. This species also occurs at a considerable distance from the coastal Oregon and Washington distribution of the other known species, and is one of the smallest conotylids yet described.

Etymology: The species epithet, a noun in apposition, is the Latin generic name of some bumblebee species, and refers to the type locality, Bumblebee Creek.

Description: Male holotype: Length, 4.5 mm. Ten or 12 ocelli in three rows, the rows diminishing in length ventrally. Color uniform pale tan. Segmental shoulders moderately developed; metazonital setae small, spatulate. Pregonopodal legpairs three and four much enlarged but lacking knobs. Anterior gonopods ( Figs. 111 , 113 ) short, broad, curved at tip, with short process posteriorly in distal third. Posterior gonopods with setose swelling basal, posterior on prefemora; coxites ( Figs. 112 , 114 ) two-branched, posterior branch with few small distal teeth or fimbriae, anterior branch with distal hook. Legpair 10 with coxae swollen, glandular; legpair 11 with dorsally directed, small prefemoral lobes.

Female 5 mm long, nonsexual characters as in male.

Distribution: Known only from the type locality.

Notes: This species, at 4.5 mm extended length in the males, is one of the smallest of conotylids. Several immature specimens were part of the type collection, interestingly their metazonital setae were longer and acute, rather than short and spatulate as in the adults. Possibly they represent another, unrecognized, syntopic species.

Figures

FIGS. 109–112. Karagama ladybird and Bollmanella bombus. Figs. 109, 110. Karagama ladybird. Fig. 109. Anterior gonopods, posterior view. Fig. 110. Right posterior gonopod coxite, posterior view. Figs. 111, 112. Bollmanella bombus. Fig. 111. Anterior gonopods, posterior view. Fig. 112. Right posterior gonopod, posterior view.

FIGS. 113–116. Bollmanella sp. Figs. 113, 114. Bollmanella bombus. Fig. 113. Anterior gonopods, posterior view. Fig. 114. Right posterior gonopod, posterior view. Figs. 115, 116. Bollmanella washingtonensis. Fig. 115. Anterior gonopods, posterior view. Fig. 116. Posterior gonopod coxites, posterior view.