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 Gagrella sp (from http://www.my-mac.net/forum/viewtopic.php?f=52&t=7912) | |
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Gagrella Stoliczka, 1869 [1] is a large genus in the family Sclerosomatidae, subfamily Gagrellinae. For details on how Roewer "created one of the great nomenclatural tangles of all time" see Crawford[2] p20.
Briefly:
- In 1869 Stoliczka described the genus Gagrella and placed two species into it, without designating a type species
- In 1910 Roewer transferred both of these species into different genera and proceeded to use the now "non-genus" Gagrella, based on his own methods involving inconsequential morphological characters.
- Since then almost all taxonomists have followed Roewer, resulting in upto 233 combinations, most of which have nothing to do with the original concept of the genus
Diagnoses[]
Pre-Roewer:[]
In hoc genere tuberculum oculorum non semper, ut alio loco dixi, laeve est, sed saepe supra plus minus subtiliter denticulatum vel granulosum; nec spina singula dorsuali agnosci potest, quum una eademque species, ut G. lepida, G. erehea et G. feae, interdum una, interdum duabus ejusmodi spinis armata sit; quam ob rem non potui, quin species etiam semper duabus spinis munitis gen. Gagrellae subjunxerim.[3]
Roewer:[]
Gagrelleae: 1.-4. Femur mit 0. 0. 1. 0. Noduli; 2. Area des Scotum oder seltener 1. und 2. Area mit je einem Mediandorn; Tuber oculorum neidrig, glatt oder bezähnelt, doch ohne großere Dörnchen; 1. und 3. Femur cylindrisch und länger als der Körper.[4]
Synonymy[]
Hallan's list has seven generic names synonymized with Gagrella Stoliczka, and all the species from these genera are listed together:
- Arthrocentrus Thorell, 1889
- Crassicippus Roewer, 1910
- Gagrella Roewer, 1910
- Hexomma Thorell, 1876
- Maindronia Roewer, 1910 [junior homonym Bouvier, 1897 (Zygentoma:Maindroniidae)]
- Melanopa Thorell, 1889
- Strandia Roewer, 1910
Of these:
- Arthrocentrus and Hexomma had been used very little. These were revalidated by Crawford as the best options of a new name for the version of Gagrella that Roewer created.
- Strandia was a valid replacement name for the junior homonym Maindronia. Staręga[5] has suggested that this should be synonymized with Gagrella, but this has not been formally done.
- Crassicippus contains the valid type species of Gagrella Stoliczka, and so it should be regarded as a junior synonym.
- Melanopa was synonymized with Gagrella by With (1903)[6], but this synonymy was rejected by Roewer[7], and it is usually regarded as a separate genus.
Homonomy[]
Depending on which of these synonymies are accepted, up to 4 replacement names will be required.
- Strandia biseriata Roewer, 1912 [Gagrella biseriata Simon, 1901]
- Strandia leucobunus Roewer, 1954 [Gagrella leucobunus Roewer, 1912]
- Gagrella similis Suzuki, 1977 [Strandia similis Roewer, 1911]
- Crassicippus speciosa Roewer, 1912 [Gagrella speciosa Roewer, 1911]
List of species[]
This list contains all available species that are part of the Gagrella-complex, as used by Hallan. To make the list manageable, it is split into six sections, based on the first letter of the species name. Within each section, each species name has a link that will take you to the species page. When the species has been coupled with Crassicippus, Melanopa or Strandia this is indicated after the name with a link to a separate page. This is not an ideal solution, but until the genus is clarified, it will have to do.
- Gagrella species A-B
- Gagrella species C-E
- Gagrella species F-L
- Gagrella species M-P
- Gagrella species Q-S
- Gagrella species T-Z
Species that have moved[]
In common with Phalangium, the genus Gagrella has been seen over the years as a bit of a 'dumping ground' for species. Species names appear in online lists (e.g. Wikipedia) that are no longer regarded as being members of this genus. To facilitate navigation of this genus, a list of such species will be produced below.
- Pseudogagrella splendens (With), 1903[8]
References[]
- ↑ Stoliczka, F. (1869) Contribution towards the knowledge of Indian Arachnoidea. Journal of the Asiatic Society of Bengal, Calcutta, 38(2), 201–251
- ↑ Crawford, Rodney L., 1992. Catalogue of the genera and type species of the harvestman superfamily Phalangioidea (Arachnida). Burke Museum Contributions in Anthropology and Natural History, 8: 1-60.
- ↑ Thorell, T.T.T. (1889). Aracnidi Artrogastri Birmani raccolti da L. Fea nel 1885–1887. In: Viaggio di Leonardo Fea in Birmania e regione vicine. XXI. Annali del Museo Civico di Storia Naturale di Genova, Genova, series 2, 7(3):521–729.
- ↑ Roewer, C.F. (1954b) Indoaustralische Gagrellinae (Opiliones, Arachnidae). (Weitere Weberknechte XVIII). 1. Teil. Senckenbergiana Biologica, Frankfurt, 35(3/4), 181–236, plates 20-22.
- ↑ Staręga, W. (1989a) Harvestmen (Opiliones) from the Mascarene Islands and resurrection of the family Zalmoxidae. Annals of the Natal Museum, Pietermaritzburg, 30, 1–8.
- ↑ With, C. J. (1903) New and old Phalangiidae from the Indian region. Journal of the Linnean Society of London, Zoology, London, 28(186), 466–509.
- ↑ Roewer, C.F. (1910a) Revision der Opiliones Plagiostethi (= Opiliones Palpatores). I. Teil: Familie der Phalangiidae. (Subfamilien: Gagrellini, Liobunini, Leptobunini.) Abhandlungen aus dem Gebiete der Naturwissenschaften, herausgegeben vom Naturwissenschaftlichen Verein in Hamburg, Hamburg, 19(4), 1–294.
- ↑ Suzuki, S. (1977d) Opiliones from Taiwan (Arachnida). Journal of Science of the Hiroshima University, Series B, Division 1 (Zoology), 27(1), 121–157, figs 1–4.
| Eupnoi Classification |
|---|
| Incertae sedis | ||
|---|---|---|
| Not assigned to any family | †Brigantibunum | †Daohugopilio | †Macrogyion | Hesperopilio | |
| Superfamily Caddoidea | ||
|---|---|---|
| Family Caddidae | Caddo | |