Hastospiculum Skrjabin 1925
Creators: name: Ferreira-Silva, Cristiana
name: Alcantara, Edna P.
name: Ávila, Robson W.
name: Silva, Reinaldo J.
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Nematoda
Chromadorea
Spirurida
Diplotriaenidae
Hastospiculum

description: Key to the species of Hastospiculum
1 Left spicule longer than 1.5 mm .......................................................................... 2
- Left spicule less than 1.5 mm ............................................................................ 6
2 Left spicule longer than 4 mm, 8 pairs of pedunculate papillae (4 pre; 2 para; 2 postcloacal), no conical processes at the tail end......................................................................................... H. varani
- Left spicule 1.5–4 mm, tail end with conical processes........................................................ 3
3 Tail end with 1 conical process with small denticles, left spicule 2.35 mm, 5 pairs of pedunculate papillae (4 pre; 1 postcloacal), 3 pairs of sessile papillae...................................................................... H. setiferum
- Tail end with conical processes without small denticles....................................................... 4
4 Tail end with 1 pair of conical processes................................................................... 5
- Tail end with 2 pairs of conical processes, left spicule 2–3 mm long, 6 pairs of pedunculate papillae (5 pre; 1 postcloacal).......................................................................................... H. macrophallos
5 Left spicule spirally twisted, 1.94–2.27 mm, 8 pairs of pedunculate papillae (5 pre; 3 postcloacal) 1 pair sessile, and tail end with 1 pair of conical processes................................................................... H. spiralis
- Left spicule 1.84–2.2 mm, 7 pairs of pedunculate papillae (4 pre; 3 postcloacal), and tail end with 1 pair of conical processes........................................................................................ H. onchocercum
6 Lips larger, covering nearly the entire cephalic end, left spicule 1.2 mm ............................... H. uncertenum
- Lips not covering the entire cephalic end................................................................... 7
7 Tail end with conical processes.......................................................................... 8
- Tail end without conical processes........................................................................ 9
8 Left spicule 1.1 mm long, 6 pairs of pedunculate papillae (3 pre; 1 para; 2 postcloacal), 1 pair of conical processes...................................................................................................... H. gouldi
- Left spicule 1.3 mm long, 5 pairs of pedunculate papillae (4 pre; 1 postcloacal), 3 papillae adcloacal, 3 sessile pairs on the tail end, tail end with 1 pair of conical processes.................................................... H. venezuelense
9 Caudal alae surrounding the tail and connected............................................................. 10
- Caudal alae not surrounding the tail and unconnected........................................................ 11
10 Left spicule 1.01 mm, 6 pairs of pedunculate papillae (4 pre; 2 postcloacal)............................. H. bipinnatum
- Left spicule less than 1 mm, 6 pairs of pedunculate papillae (4 pre; 1 para; 1 postcloacal), 3 pairs sessile (1 adcloacal; 2 on tail end)....................................................................................... H. cubaense
11 Left spicule longer than 0.9 mm, 5 pairs of pedunculate papillae (3 pre; 1 para; 1 postcloacal)............. H. digiticaudum
- Left spicule 0.7–0.9 mm, 8 pairs of pedunculate papillae (3 pre; 1 para; 4 postcloacal), and 3 sessile papillae....................................................................................... Hastospiculum nordestinum n. sp.
description: Published as part of Ferreira-Silva, Cristiana, Alcantara, Edna P., Ávila, Robson W. & Silva, Reinaldo J., 2020, A new species of Hastospiculum Skrjabin (Spirurida: Diplotriaenidae) parasite of Xenodon merremii (Walger in Spix) (Serpentes: Dipsadidae) from Northeastern Brazil, pp. 362-374 in Zootaxa 4878 (2) on page 371, DOI: 10.11646/zootaxa.4878.2.9, http://zenodo.org/record/4562566