Nannaria missouriensis Chamberlin, 1928
Means, Jackson C., Hennen, Derek A. & Marek, Paul E., 2021, A revision of the minor species group in the millipede genus Nannaria Chamberlin, 1918 (Diplopoda, Polydesmida, Xystodesmidae), ZooKeys 1030, pp. 1-180: 1
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|Nannaria missouriensis Chamberlin, 1928|
Mimuloria missouriensis Chamberlin, 1928: 155; Chamberlin and Hoffman 1958: 37; Hennen and Shelley 2015: 9, fig. 15.
Nannaria missouriensis : Hoffman, 1964: 33; Hoffman 1999: 367. Marek et al. 2014: 37. Means et al. 2021: S70-S71.
Holotype: United States - Missouri • ♂ St. Charles ; 1926; M. J. Brown leg.; NMNH P-6.
Paratypes: United States - Missouri • 3 ♂♂; same collection data as holotype; NMNH P-9 • 3 ♀♀; same collection data as holotype; NMNH P-15 • 1 ♀; [Allotype] same collection data as holotype; NMNH IC .
United States - Missouri • 1 ♂, 1 ♀; Cole County, Jefferson Cirty ; 38.5767°N, - 92.1735°W; 1 Oct. 1944; W. Dowdy leg.; NCSM NAN0535 GoogleMaps • 1 ♂, 1 ♀; Morgan County, Versailles ; 38.4314°N, - 92.8410°W; 1 Apr. 1959; J. Brooks leg.; NCSM NAN0536 GoogleMaps • 1 ♀; St. Charles County, Weldon Spring Conservation Area, Lost Valley Trail ; 38.6706°N, - 90.7515°W; elev. 164 m; 18 May 2017; hand collected; J. Means, D. Hennen, V. Wong; VTEC MPE02800 View Materials . For detailed collection data see Suppl. material 7 GoogleMaps .
Adult males of Nannaria missouriensis are distinct from other Nannaria , and the nearby N. castanea , based on the following combination of characters: Gonopods. Gonopodal acropodite gently curving medially. Distal zone with medial and lateral flanges at 90° angle to solenomere (Fig. 38B View Figure 38 , red arrow), not with medial flange at 135° angle to tip as in N. castanea . Acropodite with small medial flange near apex (Fig. 38A View Figure 38 , red triangle), not lacking as in N. castanea . Telopodite basal zone height ca. 1/3 length of acropodite, not ca. 1/2 length as in N. castanea . Prefemoral process reduced to small bump arising from top of projected, stout prefemoral spine (Fig. 38A View Figure 38 , red circle), not projected, acicular as in N. castanea . Color. Tergites with orange paranotal spots (Fig. 39 View Figure 39 ) and occasionally faint orange stripes (Fig. 39 View Figure 39 ). Dark to light brown background. Dorsum of collum smooth with orange margin.
♂ holotype ( NMNH): BL = N/A, CW = 2.9, IW = 1.7, ISW = 0.7, B11W = N/A, B11H = N/A; ♀ paratype ( NMNH, IC): BL = 25.4, CW = 1.6, IW = 1.7, ISW = 0.7, B11W = 3.4, B11H = 2.3.
As Hennen and Shelley (2015) noted, there is some slight variation in the prefemoral process and spine between populations of N. missouriensis .
Known from central and eastern Missouri (Missouri: Cole, Morgan, Phelps, and St. Charles counties, Suppl. material 7; Fig. 129 View Figure 129 ). Distribution area: 10, 977 km2; status: WRE.
Individuals of N. missouriensis have been collected from mesic deciduous forests dominated by pawpaw, maple, ironwood, and oak, often found under 1-2 cm dark, crumbly soil on hillsides.
Chamberlin (1928) gave no etymology for Nannaria missouriensis , but it is reasonable to assume that the specific name is in reference the state of Missouri.
United States, Missouri, St. Charles.
In the original publication, Chamberlin (1928: 155) mentions eight type specimens, one of which he designated as the holotype ( NMNH P-6). Chamberlin (1928) did not mention the sex of the paratypes, but we examined the type material and found three male and four female paratypes, one of which ( NMNH IC) was labeled as an allotype. Type specimens were collected in 1926 by M. J. Brown.
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