Heth pivari n. sp. (Nematoda: Ransomnematoidea: Hethidae) from the indigenous North American millipede Narceus gordanus (Spirobolida: Spirobolidae), with keys for worldwide Heth spp. Author Phillips, Gary 0000-0003-1930-1009 Department of Entomology and Plant Pathology, University of Tennessee, 370 Plant Biotechnology Building, 2505 E J Chapman Drive, Knoxville, TN 37996 - 4560 USA. & https: // orcid. org / 0000 - 0003 - 1930 - 1009 Author Moulton, John K. 0000-0001-8760-3274 Department of Entomology and Plant Pathology, University of Tennessee, 370 Plant Biotechnology Building, 2505 E J Chapman Drive, Knoxville, TN 37996 - 4560 USA. & https: // orcid. org / 0000 - 0001 - 8760 - 3274 Author Bernard, Ernest C. 0000-0003-3359-1516 Department of Entomology and Plant Pathology, University of Tennessee, 370 Plant Biotechnology Building, 2505 E J Chapman Drive, Knoxville, TN 37996 - 4560 USA. & https: // orcid. org / 0000 - 0003 - 3359 - 1516 text Zootaxa 2020 2020-10-20 4861 4 486 514 journal article 9031 10.11646/zootaxa.4861.4.2 a15b3af7-16c7-492b-bf7b-d08a36b7f6a2 1175-5326 4416659 8B330C85-5B40-48EF-8C17-48332637C1C9

TABLE 2. Morphometric measurements of Heth pivari n. sp. females.

	Holotype	Paratype females (n = 71)
	female	Mean	SD	Range	CV
Measurements (µm)
Length	2,800	3,011	406	2,190–4,483	13.5
Maximum width	182	191	52	131–380	27.2
Esophagus length	382	371	17	327–407	4.6
Basal bulb length	140	148	7.1	135–176	4.8
Egg length	210	209	11	180–234	5.3
Egg width	111	94	10.7	59–116	11.4
Head to excretory pore	167	195	20	167–234	10.3
Head to vulva	2,189	2,337	326	1,664–3,644	13.9
Head to anus	2,394	2,585	370	1,743–3,938	14.3
Tail length	406	426	50.2	318–545	11.8
Ratios
a	15.4	16.3	2	10.9–21.7	13.5
b	5.4	5.8	0.74	4.4–8	27.2
c	6.9	7.1	0.64	4.8–9.4	4.6
V (%)	78.2	78	1.6	73–83	4.8
V’	0.91	0.91	0.02	0.87–0.96	5.3