[Entomology • 2023] Nikoulabasis roseosticta • A New Species of Nikoulabasis (Odonata: Coenagrionidae) from Fiji

 

Nikoulabasis roseosticta

Beatty, Rashni, Cordero-Rivera & Marinov, 2023

DOI: doi.org/10.11646/zootaxa.5383.2.2   

 Researchgate.net/publication/376408470

Abstract

Nikoulabasis roseosticta sp. nov. (holotype ♂, Fiji, Vanua Levu Island, Navuturerega creek, 6 August 2009, Christopher Beatty leg.) is erected as a new taxon. Illustrations of key characters and a distribution map are provided.

Odonata, Vanua Levu, Pacific Odonata, taxonomy, nomenclature, new species

Nikoulabasis roseosticta sp. nov. 

Christopher D. BEATTY, Bindiya RASHNI, Adolfo CORDERO-RIVERA and Milen MARINOV. 2023. Nikoulabasis roseosticta, sp. nov. from Fiji (Odonata: Coenagrionidae).  Zootaxa. 5383(2); 135-152. DOI: doi.org/10.11646/zootaxa.5383.2.2 [2023-12-11] 

  Researchgate.net/publication/376408470_Nikoulabasis_roseosticta_sp_nov_from_Fiji 

[Entomology • 2016] Psaironeura angeloi • A New Species of Damselfly (Zygoptera: Coenagrionidae) from Central and South America

 Psaironeura angeloi

Tennessen, 2016

DOI: 10.11646/zootaxa.4078.1.5 

 Researchgate.net/publication/293636616

Photo by K.J. Tennessen. 

Abstract

Psaironeura angeloi sp. nov. (Holotype male deposited in FSCA: ECUADOR, Esmeraldas Province, small stream 5.6 km NW of Lita, 00.893°N 78.510°W, 4.II.1997, KJT leg.) is described and illustrated based on specimens from Ecuador, Panama, Costa Rica, and Nicaragua, bringing the total number of species in the genus to five. The new species is closely related to P. remissa (Calvert), a Mexican/northern Central American species with broad, foliate male cerci, but is distinct in that the long flagella of the genital ligula lack a small sharp spine unique to P. remissa, labrum and clypeus are orange-red, and the back of the head is mostly pale in both males and females. In life, the eyes of the new species are bright red in males versus green and black in P. remissa.

Keywords: Odonata, Psaironeura, Protoneuridae, Zygoptera, new species, Central America, South America

Male of  Psaironeura angeloi sp. nov. perched along small stream, near Chindul, in Manabí Province, Ecuador.

Photo by K.J. Tennessen. 

Kenneth J. Tennessen. 2016. Psaironeura angeloi, A New Species of Damselfly (Zygoptera: Coenagrionidae) from Central and South America. Zootaxa. 4078(1):28-  DOI: 10.11646/zootaxa.4078.1.5  

Researchgate.net/publication/293636616_Psaironeura_angeloi_a_new_species_of_damselfly_from_Central_and_South_America

[Entomology • 2022] Ischnura praematura • A Species (Odonata: Zygoptera: Coenagrionidae) from Yunnan (China) whose Females Mate in the Teneral State

Ischnura praematura Sanmartín-Villar & Zhang,  

in Sanmartín-Villar, Lorenzo-Carballa, Zhang & Cordero-Rivera, 2021. 

DOI: 10.11646/zootaxa.5087.1.3

All photos by I. Sanmartín-Villar.

Abstract

Ischnura praematura sp. nov. (Holotype ♂, China, Yunnan, Lijiang, 26º31´03.54”N, 100º13’38.89”E, 2396 m, 04 xii 2015, I. Sanmartín-Villar & H. Zhang leg.) is morphologically described, illustrated and compared with close species of the genus. Ischnura praematura can be mainly distinguished from its congeners I. aurora, I. rubilio and I. asiatica by its abdominal and thoracic morphology and colouration. The posterior lobe of the prothorax is elevated in I. praematura and the mesostigmal plates possess dorsal triangular protuberances. Ischnura praematura shows pointed paraprocts, internalised wide cerci and lacks a dorsal tuberculum in the tenth abdominal segment. The blue abdominal colouration is present in the last three segments (incomplete for segment eight and ten in some individuals). No female polychromatism was detected and all females observed possessed different colouration than male (gynochrome). Morphological distinctiveness of the species is supported by genetic analyses, which show that I. praematura forms a well-supported, monophyletic clade, with I. asiatica, I. ezoin and I. pumilio as the most closely related species. In the field, mature females show strong reluctance to mate, and males were observed mating with newly emerged females.

Key words: Asia, damselfly, integrative taxonomy, molecular markers, mitochondrial DNA, nuclear DNA

Ischnura praematura mature male (a) and female (b) as seen in the field, nearby Lijiang city. Note the pruinescence in the abdomen and legs of the mature female and the wing hardness in comparison with the females of the following pictures. Tandem (c) and mating (d) observed in the field between a mature male and a teneral female.

All photos by I. Sanmartín-Villar.

Ischnura praematura sp. nov. Sanmartín-Villar & Zhang 

Etymology. Specific name praematura (i.e. premature: occurring before a state of readiness or maturity has arrived) in reference to its reproductive behaviour, in which mature males mate with newly emerged females before they reach sexual maturity (see below).

Iago Sanmartín-Villar, M. Olalla Lorenzo-Carballa, Haomiao Zhang and Adolfo Cordero-Rivera. 2021. Ischnura praematura sp. nov. (Odonata: Zygoptera: Coenagrionidae): A Species from Yunnan (China) whose Females Mate in the Teneral State. Zootaxa. 5087(1); 59-74. DOI: 10.11646/zootaxa.5087.1.3