Olmeca Monjaraz-Ruedas and Francke, 2017

Monjaraz-Ruedas, Rodrigo, Prendini, Lorenzo & Francke, Oscar F., 2019, Systematics Of The Short-Tailed Whipscorpion Genus Stenochrus Chamberlin, 1922 (Schizomida: Hubbardiidae), With Descriptions Of Six New Genera And Five New Species, Bulletin of the American Museum of Natural History 2019 (435), pp. 1-93 : 58-59

Olmeca Monjaraz-Ruedas and Francke, 2017 :

399–413 (junior homonym of Olmeca

Lamothe-Argumedo and Pineda-López,

1990).

TYPE SPECIES: Olmeca cruzlopezi Monjaraz- Ruedas and Francke, 2017 [= Olmecazomus cruzlopezi (Monjaraz-Ruedas and Francke, 2017) , comb. nov.], type species, by original designation.

DIAGNOSIS: Olmecazomus , nom. nov., may be separated from other hubbardiid genera by the following combination of characters. Cheliceral movable finger without accessory tooth; single guard tooth at end of serrula; setal group G3 with setae G3-4 situated basally. Propeltidium anterior process with two anterior setae (one posterior to the other) and two pairs of dorsosubmedian setae; corneate eyes absent, one pair of eyespots present. Metapeltidium entire. Tegument without clavate setae. Pedipalps homeomorphic; trochanter with prolateral spur and projected, digitiform apical process; femur Fe 2 setae spiniform, Fv 1 and Fv 2 setae forming well-developed spiniform setiferous tubercles, located retroventrally; tibia with Ter 7 and Tir 5 setae spiniform, strongly sclerotized. Leg IV femur anterodorsal margin produced at ca. 90° angle. Opisthosomal tergite II with one pair of setae (Dm). Opisthosomal segments IX– XII not elongated; XII (♂) without posterodorsal process. Pygidial flagellum (♂) dorsoventrally compressed, elliptical or ovate, with pair of dorsosubmedian slumps fused posteriorly; flagellum (♀) with two annuli. Spermathecae (♀) with two pairs of lobes, lateral lobes wider and smaller than medial lobes (ca. 1/3 the length of median lobes); lateral lobes swollen, drop shaped; median lobes parenthesis shaped, with apex directed laterally, and without bulbs; lateral and median lobes apically sclerotized; chitinized arch V-shaped, without anterior branch; lateral tips lobed; gonopod wide and long.

COMPARISONS: Species of Olmecazomus resemble species of Heteroschizomus in the shape of the female spermathecae, with the lateral lobes approximately 1/4 the length of median lobes. However, the chitinized arch is V-shaped in Olmecazomus and mug shaped in Heteroschizomus . Males of Olmecazomus also resemble males of Mayazomus in the robust pedipalps and the presence of spiniform setiferous tubercles on the pedipalp femur. However, pedipalp tibial setae Ter 7 and Tir 5 are spiniform and prolateral tarsal spurs are absent in males of Olmecazomus , whereas Ter 7 and Tir 5 are acuminate, and large prolateral tarsal spurs are present in males of Mayazomus .

ETYMOLOGY: The generic name is a compound word, derived from the word Olmeca , honoring the Olmecs, a prehispanic Mexican tribe, and zomus, a suffix commonly used for schizomid genera. It is masculine in gender.

INCLUDED SPECIES: Olmecazomus brujo (Monjaraz-Ruedas and Francke, 2017) , comb. nov.; Olmecazomus cruzlopezi (Monjaraz-Ruedas and Francke, 2017) , comb. nov.; Olmecazomus santibanezi (Monjaraz-Ruedas and Francke, 2017) , comb. nov.

REMARKS: The name Olmeca was first used for a trematode worm, Olmeca Lamothe-Argumedo and Pineda-López, 1990 . A search in Neave’s Nomenclator Zoologicus (2005) did not capture this name, which is valid and has nomenclatural priority according to the ICZN (2000). Olmecazomus , nom. nov., is therefore designated as a replacement name for members of the junior homonym, Olmeca Monjaraz-Ruedas and Francke, 2017 .