ECOLOGICAL NICHE MODELS BY TITYUS SERRULATUS LUTZ & MELLO, 1922 AND TITYUS STIGMURUS (THORELL, 1876) (ARACHNIDA: SCORPIONES)

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  ECOLOGICAL NICHE MODELS BY TITYUS SERRULATUS LUTZ & MELLO, 1922 AND TITYUS STIGMURUS (THORELL, 1876) (ARACHNIDA: SCORPIONES) Summary Scorpions are venomous animals with high plasticity and can serve as models for biogeographical, natural history, and evolutionary studies. Ecological niche modeling can help in understanding essential characteristics of the geographic distribution of species, as well as allowing the prediction of future distribution patterns. Our objective was to model the ecological niche of the scorpion species *Tityus serrulatus * and *Tityus stigmurus* , as well as to identify the variables that influence their distribution in different biomes and their range limits in the Amazon, Caatinga, and Cerrado biomes. Data were obtained from 12 Brazilian arachnological collections. Bioclimatic variables were obtained from the WorldClim database, and niche modeling was implemented using the Maximum Entropy algorithm. The results showed that the Atlantic Forest bio...

Fusion of Pectinal Teeth in Scorpio kruglovi Birula, 1910 (Scorpiones: Scorpionidae)

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Fusion of Pectinal Teeth in Scorpio kruglovi Birula, 1910 (Scorpiones: Scorpionidae)

Abstract


A rare teratological anomaly of pecten is described and illustrated: a case of fusion in pectinal teeth in the scorpion Scorpio kruglovi Birula, 1910). It was observed that 7th and 8th teeth are fused in the right pecten. The resulting fused tooth is larger than other teeth. A smaller fulcrum located inside of the large, fused tooth whereas other fulcra are located between normally developed teeth.


Yağmur, E. A., & Yağmur, G. 2023 . Fusion of pectinal teeth in Scorpio kruglovi Birula, 1910 (Scorpiones: Scorpionidae). Euscorpius, No. 380: 1-3. https://mds.marshall.edu/euscorpius/vol2023/iss380/1/