Zootaxa

**Six new species of Calicnemia Strand, 1926 and one new species of Coeliccia Kirby, 1890 (Odonata: Zygoptera: Platycnemididae) from northeastern India**

Wed, 25 Feb 2026 00:00:00 +1300

We erect six new species of the genus Calicnemia Strand, 1926, namely, Ca. ardena sp. nov., Ca. arunachala sp. nov., Ca. flavovittata sp. nov., Ca. mimumkoa sp. nov., Ca. naga sp. nov. and Ca. rubromacula sp. nov.; and one new species of Coeliccia Kirby, 1890, Co. magna sp. nov., from northeastern India. The new Calicnemia spp. are distinguished based on the structure of the genital ligula, colouration patterns of the thorax and abdomen, and the shape of caudal appendages. Based on the morphology of the genital ligula, we propose a third species group within Calicnemia, in addition to the two previously recognised species groups. This new species group accommodates Ca. ardena sp. nov. and Ca. rubromacula sp. nov., which possess short, bifurcated genital filaments that do not align with the diagnostic characteristics of the existing species groups. Additionally, Ca. erythromelas (Selys, 1891) previously reported from India is shown to be misidentified, and the Indian material is identified as Ca. naga sp. nov. Updated identification keys for all known Calicnemia males are provided, along with detailed illustrations of diagnostic features. Coeliccia magna sp. nov., erected from Arunachal Pradesh, is distinguished from congeners by its larger body size, complete blue antehumeral stripes, and distinct male and female morphological features. We further provide lateral thoracic illustrations of Coeliccia spp.

**Two new species of the genus Rhadinoloricaria from Venezuela, and comments on the taxonomic status of species included in Rhadinoloricaria (sensu lato) (Siluriformes: Loricariinae)**

FRANCISCO PROVENZANO-RIZZI — Wed, 25 Feb 2026 00:00:00 +1300

Two new species belonging to the genus Rhadinoloricaria were found in the fish collection of the Museo de Biología de la Universidad Central de Venezuela (MBUCV-V). The two new species inhabit localities at the Orinoco River basin in Venezuela, one species come from the Cuchivero and Caura Rivers, Bolívar state, and the second species from the upper Orinoco, Casiquiare, Mavaca and Manapiare Rivers, Amazonas state. These localities extend considerably the northern boundary of the geographic distribution of the genus. The two new species exhibit the external morphology and buccal ornamentation pattern similar to those observed in the three species included in Rhadinoloricaria (sensu stricto). They can be distinguished from congeners and from each other by: snout shape, pattern of plates covering the abdomen, head and body coloration pattern, morphology of the first and second predorsal plates, and some morphometric values. Some specimens belonging to the new species of Rhadinoloricaria from the Amazonas state plus specimens of Apistoloricaria laani and A. ommation were used in molecular analyses performed previously. These and additional specimens plus the holotype of A. listrorhinos, deposited at the fish collections of the Academy of Natural Sciences Philadelphia, Drexel University (ANSP) and the Auburn University Museum of Natural History (AUM) were available to this study. These facts led to a re-evaluation of all species included in Apistoloricaria and their comparison with the species included in Rhadinoloricaria (sensu lato). In this article the two new species of Rhadinoloricaria from Venezuela are described. The comparative analyses performed support that Apistoloricaria, except A. listrorhinos, and Rhadinoloricaria are distinct and valid genera. Also, the analysis suggest that new molecular and morphological analyses are needed to elucidate the appropriate taxonomic status for all species included in Rhadinoloricaria (sensu lato) and to proposes new hypothesis of phylogenetic relationships between species within the Pseudohemiodon group.

**A new species of Hapalogenys (Lobotiformes: Lobotidae) from the Western Indian Ocean**

SERGEY V. BOGORODSKY, PATROBA MATIKU, SESHNEE REDDY — Wed, 25 Feb 2026 00:00:00 +1300

A new species of grunter, Hapalogenys olivaceus, is described based on two specimens trawled during a survey conducted by the research vessel Dr. Fridtjof Nansen from off Tanzania in 2023, representing the first record of the genus from the Western Indian Ocean. Phylogenetic analysis of the COI barcoding region revealed that the species is a member of the H. kishinouyei species complex, the known members of which are characterized by the presence of two to five longitudinal stripes on the body. However, Hapalogenys olivaceus sp. nov. differs from species of this complex by having a uniformly olive-brown head and body and a pale area posterior to the pectoral fins. In addition, the new species can be distinguished from all eight congeners by the following combination of characters: dorsal-fin rays XI,14; pored lateral-lines scales 44–45; nasal pore followed by a series of distinct pores along the ventral margin of the suborbital; suborbital deeply notched; maxilla scaly; relatively short soft rays in dorsal and anal fins; first pelvic-fin ray filamentous; and black membranes in the posterior portion of the spinous dorsal fin.

The role of a regional bird collection in documenting avian diversity in a megadiverse country: The ornithological collection of the Natural History Museum of Universidad Industrial de Santander (UIS-AV), Colombia

Wed, 25 Feb 2026 00:00:00 +1300

Ornithological collections have long been of paramount importance in documenting the diversity and distribution of the avifauna of Colombia. Here, we summarize the taxonomic, temporal and spatial patterns of growth and coverage of the ornithological collection of the Natural History Museum of Universidad Industrial de Santander (UIS-AV) for the period 1970–2024. UIS-AV houses 3253 bird skins of 550 species, representing almost 30% of Colombia’s bird species, and 72% of the species historically collected in the Department of Santander. Most of the specimens in the collection were collected in two distinct decades: the 1970s and the 2010s. Our analyses of historical collecting efforts across 479 localities allowed us to identify regions in Santander department with high representation of specimens (e.g., swamps of the Magdalena River and around Bucaramanga), as well as poorly represented regions (e.g., Chicamocha River Canyon, highland Páramos, and the Carare-Opón lowlands). These analyses open avenues for conducting resurveys that address local changes in bird composition, and represent a roadmap for collecting efforts to fill populational and taxonomic gaps of Santander birds. UIS-AV complements historical records housed in foreign museums by adding specimen series from Santander localities originally collected by foreign collectors between the late nineteenth century and 1969. The modern methods of specimen preservation and curation now used at UIS-AV mean that 49% of the vouchers include tissue samples, as well as improved data quality for specimens. However, 83% of species housed at UIS-AV are represented by less than 10 specimens, precluding detailed biological studies, and calling for continued collecting to increase the representation of one of the richest avifaunas of northern South America.

**Emending a questionable treatment of Bradysia spinidensa Hondru, 1968 (Diptera: Sciaridae) from North-Western Europe**

KAI HELLER — Wed, 25 Feb 2026 00:00:00 +1300

**A new species of Hologymnetis Martínez, 1949 (Coleoptera: Scarabaeidae: Cetoniinae: Gymnetini) from Ecuador**

DIEGO F. RODRIGUES — Wed, 25 Feb 2026 00:00:00 +1300