Nannariini Hoffman 1964

Hennen, Derek A. & Shelley, Rowland M., 2015, A contribution on the milliped tribe Nannariini (Polydesmida: Xystodesmidae): Revalidation of Mimuloria Chamberlin 1928; identities of Fontaria oblonga C. L. Koch 1847, and Nannaria minor Chamberlin 1918; elucidation of the tribal range; and commentaries on Nannaria Chamberlin 1918, and Oenomaea Hoffman 1964, Insecta Mundi 2015 (418), pp. 1-21 : 2-3

Tribe Nannariini Hoffman 1964

Nannarini (sic.) Hoffman 1964: 26–27; 1980: 159; 1999: 365. Snyder 2008: 27. Marek et al. 2014: 35. Nannariini : Shelley and Whitehead 1986: 214 (in text). Marek et al. 2014: 35.

Diagnosis (adapted from that of Hoffman [1964]). Small-bodied, parallel-sided Xystodesminae with following characteristics. Male pregonopodal sterna narrow, unmodified except for paramedian lobes between 4 th legs. Postgonopodal sterna and all sterna of females flat or only slightly elevated medially; caudal margins of 8 th- 18 th sterna in males convexly recessed in midlines and produced into subtriangular spines subtending posterior coxae, anterior coxae subtended by smaller spines. Pregonopodal tarsal claws of males broad and spatulate, twisted or not, most midbody and all posterior leg claws gently curved and acuminate. Gonopodal aperture proportionately large, extending anteriad beyond stricture into prozonite and laterad beyond lateral margins of coxal condyles. Gonopods in situ, extending variably anteriad/ nteriomediad from aperture, either upright for most of length and subparallel to opposite member or curving/leaning variably mediad and overlapping same. Coxae without apophyses, connected by membrane and muscle, without sclerotized sternum or remnant of same. Prefemoral process either short and blunt/acuminate with or without variably long acicular/falcate/laminate projections arising from either corner, or with single long acicular/laminate projection with or without short basal spine. Acropodite with moderately long hairs extending varying distances along stem and tending to cluster distad into “tufts”; stem elongate, slender, or blade-like, with or without variable subterminal solenomere, tip either continuous with stem or bent abruptly caudomediad, with or without small distal lobes or projections on anterior/dorsal/ventral surfaces and additional subtriangular lamina from inner surface carrying prostatic groove to terminal opening.

Components. Nannaria Chamberlin 1918a , Mimuloria Chamberlin 1928 , Oenomaea Hoffman 1964 . According to Hoffman (1999, pers. comm. to RMS), there are a “lot” of new nannariinine genera, and our examinations of samples throughout the range support his insight. Though not erecting such here, we examined numerous males with complex gonopodal telopodites possessing laminae, cingula, torsion, etc., that we cannot accept as congeneric with N. minor ( Fig. 25 ; Hoffman 1964, fig. 11), type-species of Nannaria . For example, N. scutellaria Causey 1942 , from the Great Smoky Mountains National Park, Sevier Co., Tennessee, and N. ericacea Hoffman 1949 , from Alleghany Co., Virginia ( Causey 1942, 1950c; Hoffman 1949), seem improperly assigned.

Distribution ( Fig. 1–2). Hoffman’s (1999) characterization as the “eastern US ” is overly generalized, and Nannariini do not occupy New England, as implied by his including “northeastern states” in the range of Nannaria . Based on peripheral records, primarily in Dr. Hoffman’s files, we project a horizontally subtriangular range, wider to the east, that encompasses the eastern and central US from westcentral New York and the western shore of Chesapeake Bay (Maryland and Virginia) to southwestern Missouri and adjacent northwestern Arkansas. North/south, the area spreads southward from Lakes Ontario and Erie (New York and Ohio), northeastern Indiana, and central Missouri (just north of the Missouri River) to northern Arkansas and the northern peripheries of Mississippi through South Carolina ( Fig. 1–2). Maximal dimensions are approximately 1,520 km (950 mi), east/west, and 1,056 km (660 mi) and 408 km (255 mi), north/south, in the east and west, respectively. Spanning major rivers like the Potomac, New/Kanawha, Ohio, Allegheny, Monongahela, Tennessee, Cumberland, Wabash, Mississippi, and Missouri, the tribe covers parts of 17 states including all of Kentucky, Tennessee, and West Virginia, and all but the northwestern corner of Ohio and the Eastern Shore and the cities of Norfolk and Virginia Beach, Virginia. Nannariini even occur on South Bass Island, Ottawa Co., Ohio, in southern Lake Erie, so while unknown from Canada, they may inhabit Pelee Island, Ontario, only 9.6 km (6.0 mi) to the northeast, and the Niagara River Valley in this province, although RMS sampled there in 1986 and did not find them. The distribution encompasses southern Illinois and the northern periphery of Mississippi that lack vouchers, although Hoffman (1964) cited the latter state in general. Likewise, no localities are known from Alabama and South Carolina, so we report three peripheral ones below. The westernmost sites in Missouri are only around 80 km (50 mi) from the northeastern/southeastern corners of Oklahoma and Kansas, so both Nannariini and Mimuloria may be encountered in these states.

Figures

Figures. 24–25. 24) Fontaria oblonga holotype, sketch of telopodite of left gonopod by R. L. Hoffman, subventral view, hairs and prostatic groove omitted. 25) Nannaria minor holotype, telopodite of right gonopod, ventral view. a, acropodite; pfp, prefemoral process.