Prionopetalum Attems, 1909

Henrik Enghoff, 2016, A mountain of millipedes IV: Species of Prionopetalum Attems, 1909, from the Udzungwa Mountains, Tanzania. With notes on “ P. ” fasciatum (Attems, 1896) and a revised species key (Diplopoda, Spirostreptida, Odontopygidae), European Journal of Taxonomy 215, pp. 1-23 : 3-6

publication ID

https://doi.org/ 10.5852/ejt.2016.215

publication LSID

lsid:zoobank.org:pub:A9E7A041-A454-4BC1-BCF4-F1E021BFDCD5

DOI

https://doi.org/10.5281/zenodo.5695701

persistent identifier

https://treatment.plazi.org/id/03D3D100-FFEB-C41E-F069-FA087BCDFE99

treatment provided by

Plazi

scientific name

Prionopetalum Attems, 1909
status

 

Genus Prionopetalum Attems, 1909 View in CoL

Prionopetalum Attems, 1909: 51 View in CoL .

Type species: Prionopetalum serratum Attems, 1909 View in CoL , by original designation.

Unlike many other genera of Odontopygidae , Prionopetalum is well-defined and quite homogeneous, not only in non-sexual characters, but also in gonopod structure.

Diagnosis

(Modified after Kraus 1960 and VandenSpiegel & Pierrard 2009, excluding some non-gonopodal characters which were mentioned by these authors but which are of no diagnostic value.)

Prionopetalini in which the anal valves have a raised rim, a well-developed dorsal spine and sometimes a smaller ventral one; limbus with simple, pointed denticles (true of all species after removal of “ P.” fasciatum , see below).Male legs with ventral soft pads on postfemur and tibia, except on anteriormost and posteriormost legs (true of all species after removal of “ P.” fasciatum , see below).

GONOPODS. Coxal metaplica on its basal part with a large longitudinal mesad flange (mlf), separated by a deep sinus from an oblique-horizontal sub-semicircular mesad flange (mof). Telopodite with a posttorsal (“femoral”) spine (pts), but without a (“tibial”) spine near the origin of the solenomere, divided into solenomere and telomere shortly after post-torsal narrowing. Solenomere (slm) simple, whip-like, without outgrowths (exception: P. fryeri ( Turk, 1956) with a short accessory branch at c. ⅔ of the solenomere’s length). Telomere with two characteristic processes: a variously shaped, often speciesspecific proximal process (tpp) which projects at ± right angles from the main telomere axis, and a long, slender distal process (tdp) which is armed with a row of spines or thorns. ( In the terminology of Kraus (1960), tpp is “eine hornartige Spitze oder auch eine entsprechende, schalige Lamelle ”, and tdp is “der meist auffallende schlankere Distalabschnitt ….. gezackt oder bezahnt”. For VandenSpiegel & Pierrard (2009), tpp is a “processus basal du tarse”.)

Body size

Published body diameters for adult males range from 2.5 mm ( P. exaratum , P. glomeratum ) to 6.8 mm ( P. bifidum ), but a male of P. frundsbergi in the ZMUC collection has a diameter of 7.6 mm. Published numbers of podous rings range from 57 ( P. exaratum ) to 71 ( P. bifidum ), but the above-mentioned male of P. frundsbergi has 72 podous rings. Table 1 View Table 1 and Fig. 2 View Fig. 2 summarise the size information and give detailed information for the two Udzungwa species. One has been subtracted from published “segment” numbers because these have traditionally included the telson. Two records have been omitted: “nearly fourty-three” for P. clarum ( Chamberlin, 1927) and 93 for P. tanganjikum Verhoeff, 1941 – the latter number is probably a lapsus calami.

Included species

Table 1. Numbers of podous rings and body diameter of adult males of species of Prionopetalum. One

  No. of podous rings Diameter (mm) Source
P. aculeatum 66 5 Attems 1914
P. asperginis sp. nov. 60–65 4.4–4.9 this study
P. bifidum 68–71 5.6–6.8 VandenSpiegel & Pierrard 2009
P. clarum P. cornutum “nearly fourty-three” 63 5.5 3 Chamberlin 1927 Kraus 1958
P. coronatum P. dentigerum P. etiennei 58 65 60 3.7 6.0 2.5 Kraus 1958 this study1 this study2
P. exaratum P. frundsbergi 57 72 2.5 7.6 Attems 1938 this study3
P. fryeri 65 6 Turk 1956
P. glomeratum 58 2.5 Attems 1935
P. kraepelini 61–65 3.2–3.6 Attems 1896; this study
P. lindi P. megalacanthum 58–59 62 3.3–3.8 4.3 VandenSpiegel & Pierrard 2009 Attems 1912
P. ndelei 61–63 4.2 VandenSpiegel & Pierrard 2009
P. pulchellum 64 3.0 Kraus 1960
P. serratum 62–66 5.6 Attems 1909
P. suave 62 5 Attems 1896
P. tanganjikum 92 ? Verhoeff 1941
P. tricuspis 65 5.5 Brolemann 1920
P. urbicolum 61–64 4.5 Carl 1909
P. xerophilum c. 60 4.5 Carl 1909

1 P. dentigerum : diameter not provided by Verhoeff (1941). Values based on ♂ from Tanzania, Pwani Region,

Kisarawe District, Ruvu South Forest Reserve, 140 m asl, 6°57'27" S, 38°50'51" E, date unknown, leg. Frontier

Tanzania, det. H. Enghoff (ZMUC).

2 P. etiennei : diameter not provided by Demange (1982). Values based on ♂ from Guinée-Bissau, Buba, 9–11 Jun.

1989, leg. A. van Harten & M. Neves., det. H. Enghoff (ZMUC).

3 P. frundsbergi : no published information. Values based on ♂ from Kenya, Bushwackers near Kibwezi, 30 Dec.

1982, leg. C.C. Kinze et al., det. H. Enghoff (ZMUC).

P

Museum National d' Histoire Naturelle, Paris (MNHN) - Vascular Plants

Kingdom

Animalia

Phylum

Arthropoda

Class

Diplopoda

Order

Spirostreptida

Family

Odontopygidae

Loc

Prionopetalum Attems, 1909

Henrik Enghoff 2016
2016
Loc

Prionopetalum

Attems C. G. 1909: 51
1909
GBIF Dataset (for parent article) Darwin Core Archive (for parent article) View in SIBiLS Plain XML RDF