Ralampia filamentosa Shear & Marek, 2022

Shear, William A. & Marek, Paul E., 2022, The millipede family Striariidae Bollman, 1893. VI. Six new genera and thirteen new species from western North America (Diplopoda, Chordeumatida, Striarioidea), Zootaxa 5205 (6), pp. 501-531 : 530

Ralampia filamentosa Shear & Marek , n. sp.

Figs 81–83

Types: Male holotype and male and female paratypes from 4 mi S of Pistol River on US 101, T38S/R14W/S32, 42.2329°N, - 124.3860°W, 200’ asl, collected 12 February 1972 by E. M. Benedict. Parts of holotype and paratypes mounted on SEM stub WS35-9. All material deposited in CAS .

Etymology: The species name, an adjective, refers to the filamentous branches of the male gonopods.

Diagnosis: This species may be separated from the foregoing by the presence of a lateral filamentous branch of the gonopod.

Description: Male holotype. Length, 5.0 mm, with 0.40 mm. 30 rings. Male secondary sexual characters as described for R. complexa , n. sp., above.

Gonopods ( Figs 81, 82 ) small, compact. Coxal setae not observed; coxal process erect, quadrate ( Fig. 81 , cp). Filamentous branch arises basolaterally, divides into four long, thin, acute filaments. Anterior angiocoxites blocky ( Figs 81, 82 aac), sharply bent posteriorly along midlength. Posterior angiocoxites with at least two branches, one of which is long, curved, and resembles flagellocoxite ( Fig. 81 , pac, fc). Colpocoxites ( Fig. 82 , cc) large, inflated, with crown of stiff, sometimes branched, narrow cuticular lamellae. Ninth leg as in Fig 83 . Tenth coxae not much swollen, gland openings anteriodorsal.

Females similar to males in nonsexual characters.

Distribution: Known only from the type locality.

Figures

FIGURES 79–83. Striariid millipedes. Figs 79, 80. Rampalia complexa, n. gen., n. sp. 79, Right gonopod, lateral view. 80. Right gonopod, mesal view. Figs 81–83. Rampalia filamentosa, n. gen., n. sp. 81. Right gonopod, lateral view. 82. Right gonopod, mesal view. 83. Left leg 9 of male, anterior view. Abbreviations: aac, anterior angiocoxite; cc, colpocoxite; cp, coxal process; cx, gonopod coxa; cxs, coxosternum of ninth legs; fc, flagellocoxite; pac, posterior angiocoxite; s9, sternum of ninth legs; t9, telopodite of ninth leg.