Nannaria davidcauseyi Causey, 1950

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

publication ID

http://dx.doi.org/10.3897/zookeys.1030.62544

publication LSID

lsid:zoobank.org:pub:48997D3B-9B4E-4348-8F30-0C8E8672569A

persistent identifier

http://treatment.plazi.org/id/3A7F611E-2AAD-5328-931F-180198BE83A1

treatment provided by

ZooKeys by Pensoft

scientific name

Nannaria davidcauseyi Causey, 1950
status

 

Nannaria davidcauseyi Causey, 1950   Fig. 34 Vernacular name: "David Causey’s Twisted-Claw Millipede" View Figure 34

Nannaria davidcauseyi   Causey, 1950b: 194, figs 3, 4. Hoffman 1999: 366. Marek et al. 2014: 36. Means et al. 2021: S69.

Mimuloria davidcauseyi   : Chamberlin and Hoffman 1958: 37. Hennen and Shelley 2015: 10, figs 4-8, 16, 17.

Material examined.

United States - Arkansas • 1 ♀; Newton County, Dismal Hollow ; 35.8506°N, - 93.2701°W; 2 Nov. 2013; pitfall trap; M. Skvarla leg.; NCSM NAN0539 GoogleMaps   2 ♂♂; Newton County, Steel Creek, Buffalo Nt River ; 36.0380°N, - 93.3402°W; 7 Nov. 2013; pitfall trap; M. Skvarla leg.; NCSM NAN0537. For detailed collection data see Suppl. material 7 GoogleMaps   .

Diagnosis.

Adult males of N. davidcauseyi   are distinct from other Nannaria   and the nearby N. castanea   based on the following combination of characters: Gonopods. Gonopodal acropodite gently curving medially, and distal zone with medial and lateral flanges at 90° angle to solenomere, not with medial flange at 135° angle to solenomere as in N. castanea   (Fig. 34A View Figure 34 , red arrow). Acropodite with small medial flange near apex, not simple lacking flange as in N. castanea   (Fig. 34A View Figure 34 , red triangle). Telopodite basal zone height 1/2 length of acropodite. Prefemoral process pronounced, acicular, arising distantly from small blunt prefemoral spine, not from top of projected prefemoral spine as in N. castanea   . Color. Hennen and Shelley (2015) described specimens of N. davidcauseyi   as having clear paranota with irregular orange spots internally, and orange/pink collum margins.

Measurements.

♂ ( VMNH, NAN0537): BL = 23.3, CW = 3.0, IW = 1.5, ISW = 0.6, B11W = 3.8, B11H = 2.2.

Variation.

Causey (1950b: 194) mentions that the male paratype of N. davidcauseyi   has variation in the shape of both the prefemoral spine and the "keel at the end of the main blade" referring to the caudally-directed acropodite tip.

Distribution.

Known only from the northwest corner of Arkansas (Arkansas: Johnson and Newton counties, Fig. 129 View Figure 129 ). Distribution area: 131 km2; status: MRE.

Ecology.

Causey (1950b) describes the habitat in which she and her husband found N. davidcauseyi   as an eastern-facing hillside in an oak-hickory woodland. Two individuals of N. davidcauseyi   were collected from Steel Creek Campground in Arkansas by M. Skvarla (NAN0537) who listed oak, hickory, American beech, and eastern red cedar as the primary tree species in the area ( Skvarla et al. 2015).

Etymology.

Causey (1950b) gave no explanation of her choice in name for this species, however it is presumed that this species is named after the author’s husband and its collector, Dr. David Causey.

Type locality.

United States, Arkansas, Newton County, about three miles northwest of Jasper.

Notes.

In the original description Causey (1950b: 194) designates a male holotype and one male and two immature paratypes collected by Dr. David Causey on 25 August 1950. Hennen and Shelley (2015: 10) refer to a female paratype and one immature paratype, which would suggest that Causey’s original identification of the female specimen as an immature was incorrect.

Kingdom

Animalia

Phylum

Arthropoda

Class

Diplopoda

Order

Polydesmida

Family

Xystodesmidae

Genus

Nannaria

Loc

Nannaria davidcauseyi Causey, 1950

Means, Jackson C., Hennen, Derek A. & Marek, Paul E. 2021
2021
Loc

Nannaria davidcauseyi

Causey 1950
1950