Stenocrates theryi Ratcliffe & Le Tirant, 2023

Stenocrates theryi Ratcliffe & Le Tirant View in CoL , sp. nov.

( Fig. 1 -4, 7)

ZooBank: http://zoobank.org/ 9D13839D-BFD9-417C-A0E5-5ACF8F7A9412

Type Material

- Holotype labeled “ PERU: Ancash / Huaraz , V.2017 / Light Trap / R. Marx leg.” and with our red holotype label ( Fig. 2).

- Allotype, ♀, with the same data and our red allotype label.

- Paratype, ♀, with the same data and our yellow paratype label.

Holotype and allotype deposited at the University of Nebraska State Museum, Lincoln, NE, USA ( UNSM) . Paratype deposited at the Museo de Historia Natural de la Universidad Nacional Mayor de San Marcos, Lima, Peru ( MUSM) .

Holotype, ♂ ( Fig. 1).

Length 17.6 mm; width 7.6 mm. Color black, shiny.

Head. – Frons smooth, with a few rugae behind frontoclypeal suture. Frontoclypeal suture weakly impressed, biarcuate, anterior margin rounded, lacking carinula. Clypeus ( Fig. 7) transversely rugopunctate; apex truncate, anterior face not thickened, lacking subrectangular tooth. Interocular width equals 3.0 transverse eye diameters. Antenna with 10 antennomeres, club subequal in length to antennomeres 2–7.

Pronotum. – Surface completely smooth. Lateral margins with thick marginal bead, base without marginal bead.)

Elytra. – Surface with punctate sutural stria and 2pairs of distinct, furrowed discal striae and 1 pair of furrowed striae behind humerus; each stria comprised of moderately large, umbilicate, closely adjacent punctures. First broad interval with single, irregular row of similar punctures,2 nd broad interval impunctate.

Pygidium. – Surface convex,with large,dense,umbilicate,glabrous punctures.

Legs. – Protibiae tridentate, basal tooth distinctly separated from others.

Venter . – Prosternal process long, stout, conical, apex narrowly rounded.

Parameres. – In caudal view ( Fig. 3), form subtriangularly widest at about the middle, shaft narrowing to below middle, and then expanding to a broad, truncate apex.

Allotype, ♀. Length 19.9 mm; width 8.0 mm. The allotype does not differ significantly from the holotype.

Paratype, ♀ (n=1). Length 17.5 mm; width 7.7 mm. The female paratype does not differ from the female allotype except in size.

Etymology. – The specific epithet is dedicated to Dr. Thomas Théry of the Montreal ( Canada) Insectarium for his collaboration and many professional courtesies.

Distribution. – Stenocratestheryi sp. nov. is known only from the Department of Ancash in western Peru. Ancash is bordered by the departments of Lima on the south, Huánuco and Pasco on the east, La Libertad on the north, and the Pacific Ocean on the west.

Locality Record ( Fig. 4). – PERU (3): ANCASH (3): Huaraz.

Temporal Distribution. – May (3).

Diagnosis. – Stenocrates theryi sp. nov. is characterized by a truncate clypeal apex, frontoclypeal suture lacking a carinula on the anterior face, completely smooth pronotum, pygidium with large, dense punctures, and the unique form of the parameres. The form of the parameres is essential for distinguishing species of Stenocrates because their external body morphology is, with few exceptions, similar. The form of the parameres of S. theryi sp. nov. ( Fig. 3) resembles somewhat those of S. laborator (Fabricius) ( Fig. 5) and S. bolivianus Dechambre ( Fig. 6) in that the parameres are widest at about the middle and with slender apices that diverge from one another. However, in S. theryi sp. nov., the clypeal apex lacks a distinct, subrectangular tooth in the center ( Fig. 7) (presentin S. latus ) ( Fig. 8), the frontoclypeal suture is carinulate on its anterior margin (rounded in S. theryi sp. nov.), and the pronotum has large punctures on the lateral thirds (smooth in S. theryi sp. nov.).