Butlerius Goodey 1929
Creators: name: Mumtaz, Sabia
name: Ahmad, Irfan
name: Tahseen, Qudsia
Publisher: name: Zenodo
Year: 2025
Subjects: Biodiversity
Taxonomy
Animalia
Nematoda
Chromadorea
Rhabditida
Diplogastridae
Butlerius

description: Genus Butlerius Goodey, 1929
Syn. Butleroides Lordello & Zamith, 1959
Butleriellus Meyl, 1960
Mesodiplogasteroides Khera, 1969
Parabutlerius Andrássy, 1984
Monobutlerius Ebsary, 1986
LSV: left subventral; RSV: right subventral; VL: ventrolateral; post.: posterior; PUS: post-uterine sac; precl.: precloacal; postcl.: postcloacal; – indicates unavailability of information in the type/ original description.
(Continued)
ABD: Anal body diameter; MBD: Maximum body diameter; *: calculated from drawing; – indicates unavailability of information in the type/original description.
The key characters for differentiating the species of Butlerius are given hereunder
1 – Female gonad prodelphic ............................................................................................................ 2
– Female gonad amphidelphic ...................................................................................................... 5
2 – Stoma with subventral armature ............................................................................................... 3
– Stoma without subventral armature ........................................................................................ 4
3 – Stoma with one dorsal & eight small teeth (two subventral, two smaller ventrolateral multi-teeth sets), gubernaculum long sickle-shaped, post-uterine duct cuticularized, genital sensilla, six pairs; two precloacal and four postcloacal ............................................... ........................................................................................................................ B. macrogubernaculum
– Stoma with one subventral tooth and denticles, gubernaculum triangular, triangle distally pointed, post-uterine duct not cuticularized, genital sensilla nine pairs; three precloacal and six postcloacal............... ....................................... B. monhystera
4 – Spicules very long, arcuate, fused for the distal two thirds of their length, gubernaculum proximally knobbed, genital sensilla nine pairs....................... B. macrospiculum
– Spicules distally hooked, gubernaculum keel-like; keel distally rounded, genital sensilla nine pairs .................................................... .................................................. B. degrissei
5 – Stoma with one dorsal tooth, subventral armature may be present or absent. .... 6
– Stoma with two dorsal tooth and two subventral teeth ...................................... B. okai
6 – Stoma without subventral armature ........................................................................................ 7
– Stoma with subventral armature ............................................................................................... 8
7 – Stoma 23–24 µm long .................................................................................................. B. demani
– Stoma 12–13 µm long... ........................................ ....................................... B. indicus sp. n.
8 – Procorpus lumen zipper-like.. ..................................................................................................... 9
– Procorpus lumen simple. ............................................................................................................ 10
9 – Sclerotised pieces in vagina............. .................... ................... B. sclerovaginatus
– Vagina without sclerotisation................ ........................ ....................... B. micans
10 – Large setose cephalic papillae, linear gubernaculum.. .................................................. 11
– Minute cephalic papillae, more expanded gubernaculum.. ........................................ 12
11 – Genital sensilla nine pairs, four unicellular uterine glands present... .. .. B. butleri
– Genital sensilla eight pairs, uterine glands absent.................................... B. canadensis
12 – Genital sensilla 11 pairs, ad more than one cloacal diam. posterior to cloaca, pd at the level of v7, rectal gland absent. ..................................... .................................... B. gerlachi
– Genital sensilla nine pairs, ad just posterior to cloaca at the level of v4, pd far posterior to v7, rectal gland present.............................................................................. B. longipyge
description: Published as part of Mumtaz, Sabia, Ahmad, Irfan & Tahseen, Qudsia, 2025, A new and a known species of the genus Butlerius Goodey, 1929 (Nematoda: Diplogastridae) from India and their relationship with congeners, pp. 171-193 in Journal of Natural History 59 (1 - 4) on pages 173-191, DOI: 10.1080/00222933.2024.2441353, http://zenodo.org/record/14764955