Betaburmesebuthus larafleissnerae Lourenco & Velten 2016
Creators: name: XUAN, QIANG
name: CAI, CHEN-YANG
name: HUANG, DI-YING
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Scorpiones
Palaeoburmesebuthidae
Betaburmesebuthus
Betaburmesebuthus larafleissnerae

description: Betaburmesebuthus larafleissnerae Lourenço & Velten, 2016
(Figs 16–18)
Material. NIGP 201155, one probable juvenile male, part of pedipalp missing.
Diagnosis (emended). This species can be clearly distinguished from other congeners by the following set of characters: 1) anterior margin of carapace with a feebly marked median concavity (Fig. 17A; Lourenço, 2016b: fig. 2); spiracles slit, not oblique (Fig. 17I); 3) pectines with 17–18 teeth (Fig. 17H; Lourenço, 2016b: fig. 3); 4) vesicle pear-shaped and slightly dilated, and aculeus very long and moderately curved, base of aculeus wide (Fig. 17G; Lourenço, 2016b: fig. 5); 5) dorsal patellar spur carina well-developed with three strong tubercles and a very small tubercle (Fig. 18C, D); 6) Chela manus with one small spinous tubercles on internal surface (Fig. 18F); 7) telotarsus with few ventrosubmedian setae and a ventromedian spinules row (Fig. 17C).
Description. Carapace. Sparsely covered by fine granules (Fig. 17A); median eyes oval and medium sized, and separated by more than one ocular diameter (Fig. 17A); PDMi anterodorsal to PLMa, and ADMi dorsal to PLMa (Fig. 17B).
Chelicerae (Fig. 17A). With setae on internal and ventral surfaces; cheliceral dentition partly visible, including a long dorsal distal (dd) denticle, a small subdistal (sd) denticle, a stout median (m) denticle, other denticles not visible.
Pedipalps. Femur with four carinae observed (Fig. 18A,B, E):internomedian and ventroexternal carinae welldeveloped with several small tubercles; dorsointernal and dorsoexternal carinae smooth. Patella with four carinae observed (Fig. 18C, D): Dorsal Patellar Spur carina well marked, dorsointernal, dorsomedian and dorsoexternal carinae costate with several granules.
Trichobothrial pattern (Fig. 18). Femur with 10 trichobothria, 5 dorsal, 3 internal and 2 external trichobothria, trichobothrium d 2 straddling dorsointernal carina (Fig. 18A, B, E) and trichobothrium e 1 aligned or slightly proximal to trichobothrium d 5 (Fig.18A,E).Patella with 12 trichobothria observed (Fig. 18C, D), including 5 dorsal (d
2 petite), 1 internal and 6 external trichobothria; trichobothrium d 3 straddling to dorsomedian carina and trichobothrium d 4 external to dorsomedian carina. Chela manus with 3 externals observed.
Legs. Trochanter bearing a lateral apophysis (Fig. 16B). Prolateral and retrolateral pedal spurs present on all legs.
Mesosoma. Tergites slightly putrefactive, carinae not evident (Fig. 17D).
Metasoma (Fig. 17E–G). All segments longer than width and covered by macrosetae ventrally. Segments I–III with week depression dorsally; segments I and II with ten carinae (paired ventromedian, ventrolateral, lateral, dorsolateral, and dorsal carinae); segments III and IV with eight carinae (paired ventromedian, ventrolateral, dorsolateral, and dorsal carinae); segment V with five carinae (single ventromedian carina, paired ventrolateral and dorsolateral carinae); dorsal and ventral carinae on segments I–IV slightly serrated, other carinae costate.
Telson (Figs 16A, 17G). Vesicle covered by several macrosetae ventrally and carinae not evident, a small subaculear tuberance observed and subaculear setal pair significantly evident.
description: Published as part of XUAN, QIANG, CAI, CHEN-YANG & HUANG, DI-YING, 2023, Revision of palaeoburmesebuthid scorpions in mid-Cretaceous amber from northern Myanmar (Scorpiones: Buthoidea), pp. 64-101 in Palaeoentomology 6 (1) on pages 83-88, DOI: 10.11646/palaeoentomology.6.1.10, http://zenodo.org/record/7754820