Lamparia millicoma 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 : 516-517

Lamparia millicoma Shear & Marek , n. sp.

Figs 30–32 , 69–71

Types: Male holotype and female paratype from 11 mi E, 4 mi N of Allegany Douglas Co., Oregon, Berlese of myrtle and rhododendron litter, Weyerhauser Millicoma Tree Farm , company road 5000, T24S, R9W, S18 (43.4862°N, - 123.8177°W) 1055’ asl, collected 20 November 1971 by E. M. Benedict. Male and female paratypes from 8 mi E, 2 mi S of Allegany, Coos Co. , Oregon, Berlese of Pseudotsuga bark on clear-cut slope, Weyerhauser Millicoma Tree Farm, company road 5000, T25S, R10W (43.3936°N, - 123.8705°W), 1450’ asl, S15, collected 20 November 1971 by E. M. Benedict; 11 mi E, 4 mi S of Allegany, Douglas Co. , Oregon, Berlese of hemlock duff and moss, Weyerhauser Millicoma Tree Farm, company road 6040, T25S, R9W, S31 (43.3740°N, - 123.8106°W), 850’ asl, collected 21 November 1971 by E. M. Benedict. All material deposited in CAS .

Etymology: The species epithet is a noun in apposition, referring to the Weyerhauser Millicoma Tree Farm.

Diagnosis: Distinct from L. curryensis , n. sp. and L. bentonensis , n. sp. in not having a knob at the tip of the gonopod anterior angiocoxite and in the reduced posterior angiocoxite ( Figs 69, 70 ). From the related Lamparia pratensis n. sp., separable by the form of the ninth legs of males of that species, which have a median sternal knob and a long, curved coxosternal process that parallels the elongate telopodite (compare Figs 68 and 71 ).

Description: Male holotype. Length, 4.7 mm, width 0.48 mm. Two black ommatidia on each side of head. Sixth crests well extended as broad paranota ( Figs 26, 27 ). Telson lobes nearly completely suppressed. Metazonital setae not seen, absent or concealed by heavy cerotegument. Color white to pale tan, faintly suffused pale purplish brown. Flasks of third coxae short, when extended posteriorly reaching only to anterior margin of fifth coxae ( Fig. 30 , cf). Other characters as described for genus.

Gonopods ( Figs 39 , 69, 70 ) moderately large. Coxae ( Fig. 69 ) with 3 setae, bulbous. Anterior angiocoxites ( Figs 31 , 69, 70 , aac) narrow, erect, with slightly expanded, curved tip, posterior surface finely fimbriate from base to about half length of coxite. Posterior angiocoxite ( Fig. 31 , pac) much reduced; flagellocoxite not sheathed. Flagellocoxite single, thin, short ( Figs 31 , 69 , fc). Colpocoxite large and bulbous, shifted anteriomesally, set with a few triangular, fine cuticular teeth ( Figs 69, 70 , cc). Ninth legs with coxosternum ( Fig. 71 ). Telopodites ( Fig. 71 , t 9 ) free, apically flattened, mesally curved anteriorly, interlocking with gonopods, laterally fitting into deep indentations in ventrolateral edges of seventh ring. Telopodite processes ( Fig. 71 , tp9) flattened, long, sharply curved, mesally elongate, tips crossing in midline. Tenth coxae not much swollen, gland openings anteriodorsal.

Female paratypes similar to males in nonsexual characters.

Distribution: Found in the vicinity of Allegany, Oregon. The small village of Allegany is in Coos Co., but near the border with Douglas Co.

Note: This species is very similar to L. pratensis n. sp., but has very different male ninth legs. The more basal segments of the legs bear the modified setae characteristic of striariids ( Fig. 28 ). The female genitalia are complex ( Fig. 32 ) but their taxonomic value has not been assessed. It would appear that they are not exactly symmetrical when left and right are compared.

Figures

FIGURES 30–34. Striariid millipedes. Figs 30–32. Lamparia millicoma, n. gen., n. sp. 30. Coxal flasks of legpair 3 of male, ventral view. 31. Gonopods, anterior view. 32. Female genitalia, ventral view Figs 33, 34. Rampalia cheathamensis, n. gen., n. sp. 33. Ommatidia and Tömösváry organ of male, lateral view. 34. Legpair 3 of male, lateral view.Abbreviations: aac, anterior antiocoxite; cc, colpocoxite; cf, coxal flasks of leg 3; fc, flagellocoxite; om, ommatidium; pac, posterior angiocoxite; pf3, prefemur of leg 3; To, Tömösváry organ.

FIGURES 63–70. Striariid millipedes. Figs 63–65. Lamparia bentonensis, n. gen., n. sp. 63. Right gonopod, lateral view. 64. Right gonopod, mesal view. 65. Male legpair 9, posterior view. Figs 66–68. Lamparia pratensis, n. gen. n. sp. 66. Right gonopod, lateral view. 67. Right gonopod, mesal view. 68. Male right leg 9, posterior view. Figs 69, 70. Lamparia millicoma, n. gen., n. sp. 69. Right gonopod, lateral view. 70. Right gonopod, mesal 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 71–78. Striariid millipedes. 71. Right leg 9 of male Lamparia millicoma, n. gen., n.sp., anterior view. Figs 72– 75. Rampalia cheathamensis, n. gen. n. sp. 72. Right gonopod, lateral view. 73. Right gonopod, mesal view. 74. Male ninth legpair, anterior view. 75. Male ninth legpair, posterior view. Figs 76–78. Plaramia arcata, n. gen., n. sp. 76. Right gonopod, lateral view. 77. Right gonopod, mesal view. 78. Left leg 9 of male, anterior view. Abbreviations: aac, anterior angiocoxite; cc, colpocoxite; cxp, coxal process; cx, gonopod coxa; fc, flagellocoxite; pac, posterior angiocoxite; t9, telopodite of ninth leg.

FIGURES 25–29. Striariid millipedes. 25. Coxae of legpairs 3–6 of male Lamparia bentonensis, n. gen., n. sp., ventral view. Figs 26–29. Lamparia pratensis, n. gen., n. sp. 26. Ring 14 of male, posterior view. 27. Rings 3–5 of male, dorsal view. 28. Prefemur of leg 3 of male, lateral view. 29. Telson and paraprocts of male, lateral view. Abbreviations: cf, cosal flask of leg 3; cx5, coxa of leg 5; cx6, coxa of leg 6; c1–6, crests 1 to 6, respectively, numerals, ring numbers; pf4, prefemur of leg 4; tel, telson.

FIGURES 35–40. Striariid millipedes. Figs 35, 36. Rampalia cheathamensis, n. gen., n. sp. 35. Coxae of male legpair 7, ventral view. 36. Gonopods, anterioventral view. Figs 37–40. Plaramia arcata, n. gen., n. sp. 37. Head, collum and ring 2 of male, lateral view. 38. Legpair 3 coxae of male, ventral view. 39. Gonopods, ventral view. 40. Right gonopod, mesal view. Abbreviations: aac, anterior angiocoxite; cc, colpocoxite; cf, coxal flask of leg 3; col, collum; cp, coxal process; cx, gonopod coxa; cxs, coxosternite of leg 9; cx5, coxa of leg 5; cx7, coxa of leg 7; L1, leg 1; m, mandible; s, sternum of gonopods; t9, telopodite of leg 9; 2, ring 2.

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.