Betaburmesebuthus larafleissnerae Lourenço & Velten, 2016

XUAN, QIANG, CAI, CHEN-YANG & HUANG, DI-YING, 2023, Revision of palaeoburmesebuthid scorpions in mid-Cretaceous amber from northern Myanmar (Scorpiones: Buthoidea), Palaeoentomology 6 (1), pp. 64-101 : 83-88

publication ID	https://doi.org/ 10.11646/palaeoentomology.6.1.10
publication LSID	lsid:zoobank.org:pub:B822ED53-D559-4DD8-8803-3F2850A00445
DOI	https://doi.org/10.5281/zenodo.7757595
persistent identifier	https://treatment.plazi.org/id/F308E17F-4343-FFFB-FCCD-4D69FE8B1802
treatment provided by	Plazi
scientific name	Betaburmesebuthus larafleissnerae Lourenço & Velten, 2016
status

Treatment

( Figs 16–18 View FIGURE 16 View FIGURE 17 View FIGURE 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 View FIGURE 17 ; Lourenço, 2016b: fig. 2); spiracles slit, not oblique ( Fig. 17I View FIGURE 17 ); 3) pectines with 17–18 teeth ( Fig. 17H View FIGURE 17 ; Lourenço, 2016b: fig. 3); 4) vesicle pear-shaped and slightly dilated, and aculeus very long and moderately curved, base of aculeus wide ( Fig. 17G View FIGURE 17 ; Lourenço, 2016b: fig. 5); 5) dorsal patellar spur carina well-developed with three strong tubercles and a very small tubercle ( Fig. 18C, D View FIGURE 18 ); 6) Chela manus with one small spinous tubercles on internal surface ( Fig. 18F View FIGURE 18 ); 7) telotarsus with few ventrosubmedian setae and a ventromedian spinules row ( Fig. 17C View FIGURE 17 ).

Description. Carapace. Sparsely covered by fine granules ( Fig. 17A View FIGURE 17 ); median eyes oval and medium sized, and separated by more than one ocular diameter ( Fig. 17A View FIGURE 17 ); PDMi anterodorsal to PLMa, and ADMi dorsal to PLMa ( Fig. 17B View FIGURE 17 ).

Chelicerae ( Fig. 17A View FIGURE 17 ). 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 View FIGURE 18 ):internomedian and ventroexternal carinae welldeveloped with several small tubercles; dorsointernal and dorsoexternal carinae smooth. Patella with four carinae observed ( Fig. 18C, D View FIGURE 18 ): Dorsal Patellar Spur carina well marked, dorsointernal, dorsomedian and dorsoexternal carinae costate with several granules.

Trichobothrial pattern ( Fig. 18 View FIGURE 18 ). Femur with 10 trichobothria, 5 dorsal, 3 internal and 2 external trichobothria, trichobothrium d 2 straddling dorsointernal carina ( Fig. 18A, B, E View FIGURE 18 ) and trichobothrium e 1 aligned or slightly proximal to trichobothrium d 5 ( Fig.18A,E View FIGURE 18 ).Patella with 12 trichobothria observed ( Fig. 18C, D View FIGURE 18 ), 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 View FIGURE 16 ). Prolateral and retrolateral pedal spurs present on all legs.

Mesosoma. Tergites slightly putrefactive, carinae not evident ( Fig. 17D View FIGURE 17 ).

Metasoma ( Fig. 17E–G View FIGURE 17 ). 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 View FIGURE 16 , 17G View FIGURE 17 ). Vesicle covered by several macrosetae ventrally and carinae not evident, a small subaculear tuberance observed and subaculear setal pair significantly evident.