Striaria bombillus, Shear, 2021

Shear, William A., 2021, The millipede family Striariidae Bollman, 1893: III. Four new species of Striaria Bollman, 1888 (Diplopoda, Chordeumatida, Striariidae) from Idaho, USA, Zootaxa 4920 (3), pp. 395-406 : 402

Striaria bombillus , n. sp.

Figs 14–17 , 25–28

Types: Male holotype and two female paratypes from Little Bumblebee Creek, 47.6238°, -116.2972°, Shoshone Co., Idaho, collected 11 April 2003 by W. Leonard, deposited in the California Academy of Sciences. Parts of the holotype are mounted on SEM stub WS34-5, deposited with the specimens .

Etymology: The species epithet is a Latin noun in apposition, diminuitive of bombus, a bumblebee, and refers to Little Bumblebee Creek, the type locality.

Diagnosis: Similar to the preceding species, but differing in the fewer, shorter, less curved spinules and in lacking a lateral process of the anterior angiocoxites; possibly the lateral process has shifted somewhat to the mesal side of the anterior angiocoxites.

Description: Male holotype. Length, about 11 mm, width about 1.0 mm. Body form and secondary sexual characters as for the genus and Striaria aculeata , see above.

Gonopod anterior angiocoxites ( Figs 25, 26 ) sharply bent posteriorad about two thirds their length at pronounced transverse ridge, proximal to ridge are 2 or 3 distinct rugae; tip ( Figs 27, 28 ) with a few long spinules mesal, more laterally are more numerous but lower spinules in single row. Posterior angiocoxites robust, sheathing three or four flagellocoxites, lacking hook-like process seen in S. aculeata . Ninth legs as in S. aculeata .

Female paratype: Similar to male but without secondary sexual modifications; pygidium short, broad ( Fig. 17 ).

Distribution: Known only from the type locality.

Figures

FIGURES 12–15. Males of new species of Striaria. 12, 13. S. aculeata, n. sp. 12. Tips of left gonopod, lateral view. 13. Tips of right gonopod mesal view. 14, 15. S. bombillus, n. sp. 14. Head and collum, frontal view. 15. Pleurotergite 8, lateral view, anterior to the right. Abbreviations: col, collum; ct, cerotegument; aac, anterior angiocoxite; fc, flagellocoxite; lab, labrum; lcc, lateral lobe of colpocoxite; pac, posterior angiocoxite.

FIGURES 16–19. New species of Striaria. 16, 17. S. bombillus, n. sp. 16. Pygidium of male, dorsal view. 17. Pygidium of female, dorsal view. 18. Right ninth leg of S. vagabundus, n. sp., anterior view. 19. Second and third legpairs of S. orator, n. sp., ventroposterior view. Abbreviations: cf, coxal flask; cx, coxa; cxp, coxal process; numerals, pleurotergite numbers; pcb, postcoxal bar; pf3, prefemur of leg 3, ptr7, modified margin of pleurotergite 7; pyg, pygidium; s, sternum; t9, telopodite of leg 9.

FIGURES 22–30. Gonopods of new species of Striaria. 22–24. S. aculeata., n. sp. 22. Right gonopod, mesal view. 23. Tip of anterior angiocoxite, lateral view. 24. Same, mesal view. 25–28. S. bombillus, n. sp. 25. Right gonopod, mesal view. 26. Right gonopod, lateral view. 27. Tip of anterior angiocoxite, lateral view. 28. Same, mesal view. 29, 30. S. vagabundus, n. sp. 29. Tip of anterior angiocoxite, lateral view. 30. Same, mesal view. Abbreviations: aac, anterior angiocoxite; lcc, lateral lobe of colpocoxite; pac, posterior angiocoxite; pcc, posterior lobe of colpocoxite.