Year of publication
- Occurrence of the milliped, Hiltonius carpinus carpinus Chamberlin, 1943 (Spirobolida: Spirobolidae), in the United States and new records from Mexico (2010)
- Hiltonius carpinus carpinus Chamberlin, 1943 (Spirobolida: Spirobolidae), is authoritatively recorded from the United States for the first time; it is known only from southern/southeastern Arizona but should be expected in adjoining counties of New Mexico. The northernmost locality is the Pinaleno Mountains, Graham County, and its distribution extends to southern Mexico; the other subspecies, H. c. vulcan (Chamberlin, 1953), occurs in Guatemala. The range of H. c. carpinus includes the type locality of the enigmatic H. fossulifer (Pocock, 1908), lending credence to prior suggestions that the names are synonymous. Three new Mexican states – Durango, Jalisco, and Nuevo León – are documented for H. c. carpinus.
- Annotated checklist of the millipeds of Florida (Arthropoda: Diplopoda) (2000)
- The milliped fauna of Florida consists of 8 orders, 18 families, 34 genera, and 51 species and subspecies; it comprises six elements: widespread species occurring widely in Florida, northern species reaching their southern limits in north Florida, neotropical species occurring naturally in Florida or adventive there, oriental adventives, Florida endemics, and southeastern endemics. A complete listing of these taxa is provided, with published and new records from the state, synonyms, and type localities. Georgiulus paynei Hoffman, Cleidogona alata Causey, and Pseudopolydesmus serratus (Say) are newly recorded from the state, and Eurymerodesmus serratus Shelley is deleted; Pseudojulus obtectus (Bollman) is recorded from Alabama.
- Narceus woodruffi Causey, a forgotten milliped species (Spirobolida: Spirobolidae) (2002)
- Previous treatments ofthe east-Nearctic spirobolid genus Narceus Rafinesque have overlooked the name, N. woodruffi Causey. The holotype is lost, but examinations of a non-typical male and two paratype and three non-typical females show it to be a valid species, perhaps endemic to north Florida, distinguished by its small size and the configurations of the gonopods and coxal lobes of legs 3-6 in males. Supplemental anatomical notes are presented on the non-typical male along with comparative drawings of the lobes and gonopods of N. woodruffi, N. american us (Beauvois), and N. annularis (Rafinesque); distributions of species of Narceus in Florida are depicted on a map. Substantial size differences between ostensibly conspecific males of N. american us in Texas and Arkansas suggest that Narceus may be more complex than the current concept of four species.
- Occurrence of the milliped Pachydesmus crassicutis adsinicolus Hoffman in Florida (Polydesmida: Xystodesmidae) (2001)
- Occurrence of the milliped Pachydesmus crassicutis adsinicolus Hoffman in Florida (Polydesmida: Xystodesmidae)
- Parajulid milliped studies V. The genera Pseudojulus Bollman and Arvechambus Causey (Parajulinae: Aniulini) (2002)
- The parajulid milliped genus Pseudojulus Bollman comprises four species: P. obtectus (Bollman), P.paynei (Hoffman), n. comb., andP. carolinensis andP. coastalis, new species; Arvechambus Causey comprises two species, A. hummi and A. weemsi, both by Causey. Georgiulus Hoffman is placed in synonymy under Fseudojulus; G. hubrichti Hoffman is placed under P. pay/wi; andA. australis Causey is placed under A. hummi. The genera are sympatric in north Florida and southern Georgia, but Pseudojulus extends northward to coastal South Carolina and southcentral North Carolina, and westward to Alabama west of Mobile Bay. Both genera belong to the Aniulini and possess unique features; in Pseudojulus the anterior gonopod coxae are fused into a "shelf' on the dorsal surface ofthe complex that extends ventrad along the caudal margin and possesses a pair of posterior median syncoxallobes or laminas of varying lengths and configurations. Arvechambus exhibits a suite of apomorphies and is sister to the rest of the tribe collectively: the 8th sternum possesses elevated lateral lobes that overhang the sides ofthe gonopodal aperture; the 7th pleurotergite possesses lobes that also overlie the sides of the aperture; the anterior gonopods lack lateral syncoxal processes, the coxal lobes, much larger than in other tribal genera, arise laterad and obscure part of the telopodite in anterior view, and the telopodite is elongate rather than clavate; and the 2nd pleurotergite in females possesses lobes that overhang and effectively close the cyphopodal aperture.