Rusmithia gorochovi Skejo, Kasalo, Thomas & Heads, 2024
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publication ID |
https://dx.doi.org/10.3897/jor.33.105144 |
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publication LSID |
lsid:zoobank.org:pub:1A982C52-DF7C-42FE-AD3B-376A3380829E |
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persistent identifier |
https://treatment.plazi.org/id/92DD1977-586C-41E2-9024-E585BCE90B24 |
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taxon LSID |
lsid:zoobank.org:act:92DD1977-586C-41E2-9024-E585BCE90B24 |
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treatment provided by |
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scientific name |
Rusmithia gorochovi Skejo, Kasalo, Thomas & Heads |
| status |
sp. nov. |
Rusmithia gorochovi Skejo, Kasalo, Thomas & Heads sp. nov.
Figs 1 View Fig. 1 and 2 View Fig. 2
Type specimen. -
Holotype: Russian Federation • adult female (Figs 1 View Fig. 1 and 2 View Fig. 2 ); Kaliningradskaya oblast', Yantarny, Anna mine; Ru Smith’s collection. Syninclusions: a fly ( Diptera ) belonging to the family Sciaridae (det. A.J. Ross).
Etymology. -
The new species name is patronymic and honours Dr. Andrei V. Gorochov, world-renowned expert on fossil Orthoptera .
Diagnosis. -
As for the genus.
Description. -
Head (Fig. 2B, C, D View Fig. 2 ). In frontal view: Eyes globose. Top margin of compound eye a little above vertex. Lateral and transverse carina forming an acute angle below which surface of exoskeleton more granular; some air bubble encapsulation apparent in this part. Frontal costa prominent. Frontal costa bifurcates at approximately middle of the compound eye height. Scutellum vaguely bottle-shaped; the section between the eyes approximately as narrow as an antennal groove. Below eyes, scutellum progressively widened up to the bottom margin of the antennal groove and then progressively but slightly narrowed; section below eyes double the length of the one between the eyes. Paired ocelli placed a little above the bottom margin of the compound eye; median ocellus occluded by debris. Top margin of the antennal groove at the level of the bottom margin of the compound eye. In dorsal view: Vertex highly granulated and wider than the compound eye. Anterior margin of the vertex slightly dorsal to the anterior margin of the compound eyes; frontal costa protrudes slightly anterior to the level of the compound eyes. Lateral and transverse carinae form acute triangular shapes that enclose shallow triangular fossulae. Medial carina barely visible throughout the length of the vertex. The compound eyes not touching anterior margin of pronotum. In lateral view: Frontal costa prominent. Scutellum very prominent. Most of the view obscured by encapsulated air bubbles and debris.
Pronotum (Fig. 2A, B, E View Fig. 2 ). Macropronotal form. In dorsal view: Entire surface tuberculated. Anterior margin of the pronotum projected forwards in the form of an obtuse triangle. Prozonal carinae parallel. Interhumeral carinae long, converging dorsally. Median carina present throughout the length of the pronotum. Lateral area large dorsal to the tegmina.Pronotal apex occluded by debris. Wings surpass the pronotal apex but it is unclear by how much as the apex is broken. In lateral view: Paranotum rectangular. Ventral sinus in the form of an obtuse angle; tegminal sinus in the form of a nearly right angle. Infrascapular area narrow and of unclear length. Median carina forms a hump between the shoulders; anteriorly, there is a lower hump between the prozona and metazona, and the anterior process forms yet another hump, smaller than the preceding one. Dorsal to the interhumeral hump, the median carina is straight.
Wings (Fig. 2E, H View Fig. 2 ). Alae well-developed, reaching past the pronotal apex. Tegmina unusually wide and long, a little less than half of the length of alae. Tegmina width more than half of that of the hind femur. Radius straight, very disctinct. Subcosta parallel to the radius. Other veins not discernable.
Legs (Fig. 2E, G View Fig. 2 ). Fore- and mid-femora thin, rectangular in cross-section. Foretibiae with small teeth distally. Hind femora long and narrow with small genicular and tiny antegenicular teeth.
Ovipositor (Fig. 2F View Fig. 2 ). Short, serrated. Both ovipositor valves bulging in the middle. Dorsal valve wider than ventral valve, but of same length.
Measurements. -
Pronotum length 17 mm; body length 18 mm; hind femur length 9 mm; hind femur width 2 mm; tegmen length 6 mm.
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.