The recent rediscovery and examination of the holotype
of Neischnocolus panamanus Petrunkevitch, 1925 and its
comparison with type material of the genera Barropelma
Chamberlin, 1940 and Ami Pérez-Miles, 2008 led us to
establish their generic synonymy. Ami species and the
monotypic Barropelma parvior (Chamberlin & Ivie, 1936)
fit with the diagnostic characters of Neischnocolus, with the
presence of modified type I urticating setae and the singular
spermathecal morphology. B. parvior is considered a junior
synonym of N. panamanus syn. nov. based on genital organ
morphology and geographical location. Ami bladesi Pérez-
Miles, Gabriel & Gallon, 2008 is also considered a junior
synonym of Neischnocolus panamanus syn nov. based on
genital organ morphology and geographical location. As a
consequence, of the synonymies of the genera Barropelma and
Ami with Neischnocolus, seven new combinations are created:
N. amazonica comb. nov., N. armihuarensis comb. nov., N.
caxiuana comb. nov., N. obscurus comb. nov., N. pijaos comb.
nov., N. weinmanni comb. nov. and N. yupanquii comb. nov.
Montenegro et al. (2018) reported the theraphosid spider genus Homoeomma Ausserer, 1871 from Chile and described a new species of this genus with distinctive red and black colouration, naming it Homoeomma chilensis Montenegro & Aguilera, 2018. Soon after, Sherwood et al. (2018) described Homoeomma bicolor also from Chile having the same colouration. In this work, we demonstrate these nominal species to be synonymous and H. chilensis is regarded as the valid senior synonym of H. bicolor following the Article 23 of the Code (Anonymous 1999).
This case represents an instance where two independent scientific teams described the same taxon, in different journals published within a very short period of time of each other, respectively dated October and November of the same year, causing two available binominal names to exist for a single species (Anonymous 2019). Here we resolve this situation through synonymy, discuss an additional morphological character not mentioned in the original description by Montenegro et al. (2018) and note further intraspecific variation that exists for H. chilensis. Potential homonymy in Chilean theraphosid nomenclature is also discussed.
Poecilotheria chaojii Mirza, Sanap & Bhosale, 2014 is proposed as a junior synonym of Poecilotheria tigrinawesseliSmith, 2006 n. syn., based on morphology and distribution. The variability of morphological features given by Mirza, Sanap & Bhosale (2014) is discussed.
A new genus and species of the subfamily Selenocosmiinae Simon, 1892 are described from Sarawak, Borneo: Birupes simoroxigorum gen. et sp. nov. with discussion on the use of palpal bulb, spermathecae and stridulatory organ morphology in selenocosmiine systematics.
A new species of theraphosid spider from
Chile is described: Homoeomma bicolor sp. nov.
The holotype male of Psalmopoeus pulcher Petrunkevitch, 1925 is re-described and the female is described for the first time. Colour ontogeny, intraspecific morphological variation and sexual dimorphism are discussed and its biogeographical distribution mapped.