Maraplia schusteri 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 : 509

Maraplia schusteri Shear & Marek , n. sp.

Figs 10, 11 , 55–57

Types: Male holotype and two male paratypes from near Stringtown Hill , NE of Oroville , Butte Co., California, 39.5219°N, - 121.3909°W, 1440’ asl, collected 9 February 1956 by R. O. Schuster. Types deposited in FSCA. Parts of holotype and one paratype on SEM stub WS35-4 .

Etymology: The species is named for entomologist Robert O. Schuster (1927–1989).

Diagnosis: Distinct from the two other species of Maraplia n. gen. in the form of the gonopods. Maraplia schusteri n. sp., has long, thin, and evenly curved angiocoxites, rather than the sharply deflexed, relatively short anterior angiocoxites seen in the other species ( Figs 10 , 55 , 56 , aac). The coxal process is not flattened and platelike but narrower and distinctly bifid ( Fig. 55 , cp).

Description: Male holotype. Length 3.5 mm, width about 0.32 mm. Two black ommatidia on each side of head. Color white. Sixth crests about twice height of C5, as short paranota. Telson lobes obscure. Other characters as for genus.

Gonopods ( Figs 10 , 55 , 56 ) small, compact. In lateral view, coxa ( Fig. 55 , cx) with about 6 or 7 setae, coxal process narrow, distally bifid, anterior branch longer, posterior branch slightly recurved ( Fig. 55 , cp). Anterior angiocoxite ( Figs 10 , 55 , 56 , aac) narrow, long, evenly curved, apically acute, with smaller basal triangular tooth. Posterior angiocoxite strongly reduced to single blunt rod, apparently not sheathing the very short, straight flagellocoxite. Colpocoxite ( Figs 55 , 56 , cc) shifted anteriomesally, with anterior branch densely fimbriate, posterior part swollen, with a few small, fine triangular fimbriae. Ninth legs ( Fig. 57 ) with mesal coxosternal process low, triangular ( Fig. 57 , cp), telopodite fungiform ( Figs 10 , 57 , t 9 ), bearing mesal process set with 6 or 7 ensiform setae and second curved, roughly triangular posterior process. Tenth leg coxae slightly enlarged, with glandular openings.

Females not collected.

Distribution: Presently known only from Butte County, California.

Figures

FIGURES 10–15. Striariid millipedes. Figs 10, 11. Maraplia schusteri, n. gen., n. sp. 10. Gonopods, legpair 9 and paratergite 7, oblique lateral view. 11. Coxae of legpair 2, ventral view. Figs 12–15. Maraplia chico, n. gen., n. sp. 12. Head and first two legpairs, ventral view. 13. Coxal flasks of legpair 3, ventral view. 14. Gonopods, ventral view. 15. Posterior end of male, dorsal view. Abbreviations: aac, anterior angiocoxite; c4, coxa of leg 4; c5, coxa of leg 5; cf, coxal flask of leg 3; cx2, coxa of leg 2; f1, femur of leg 1; lab, labrum; m, mandible; numerals, ring numbers; pac, posterior angiocoxite; pf, prefemur of leg 3; pt7, paratergite of ring 7; s, gonopod sternum; t9, telopodite of ninth leg; tp9, telopodite process; vcp, common opening of vas deferens.

FIGURES 49–55. Striariid millipedes. Figs 49–51. Nototrisaria ornata, n. gen., n. sp., right gonopod, lateral view. 50. Same, mesal view. 51. Legpair 9 of male, anterior view. Figs 52–54. Maraplia napa, n. gen., n. sp. 52. Right gonopod, mesal view. 53. Right gonopod, lateral view. 54. Right leg 9 of male, posterior view. 55. Right gonopod of Maraplia schusteri, n. gen., n. sp., lateral view. Abbreviations: aac, anterior angiocoxite; cc, colpocoxite; cp, coxal process; cx, gonopod coxa; fc, flagellocoxite; pac, posterior angiocoxite; s9, sternum of ninth legs; t9, telopodite of ninth leg.

FIGURES 56–62. Striariid millipedes. Figs 56, 57. Maraplia schusteri, n. gen., n. sp. 56. Right gonopod, mesal view. 57. Right leg 9 of male, anterior view. Figs 58–60. Maraplia chico, n. gen., n. sp. 58. Right gonopod, lateral view. 59. Right gonopod, mesal view. 60. Right leg 9 of male, posterior view. Figs 61, 62. Lamparia curryensis, n. gen., n. sp. 61. Right gonopod, lateral view. 62. Right gonopod, mesal view. Abbreviations: aac, anterior angiocoxite; cc, colpocoxite; cp, coxal process; cx, gonopod coxa; cxs, coxosternite of legs 9; fc, flagellocoxite; pac, posterior angiocoxite; s9, sternum of ninth legs; t9, telopodite of ninth leg.

FIGURES 7–9. Maraplia napa, n. gen., n. sp. 7. Female, lateral view. 8. Head and first legpair of male, ventral view. 9. Coxal flask of leg 3 of male, lateral view. Abbreviation: cf, coxal flask of leg 3.