Dicronychus jarda, Platia & Konvička, 2024

Platia, Giuseppe & Konvička, Ondřej, 2024, Description of three new species of click beetles (Coleoptera: Elateridae) with an updated catalogue of Elateridae from the Sultanate of Oman, Faunitaxys 12 (47), pp. 1-11 : 2-4

Dicronychus jarda n. sp.

( Fig. 2, 5, 9)

ZooBank: https://zoobank.org/ 3F601622-9BE9-4035-A4D1-958D33E2D70D

Type locality. Sultanate of Oman, Ash Sharqiyah North Governorate, 10 km southwest of Al Jarda village , 22°59'4"N, 58°5'36"E, 590 m a.s.l.

Holotype, ♂, (CKZ), ‘ Oman, Ash-Shar. N. Gov. [Ash-Sharqiyah North Governatore ] / Al Jarda 10 km SW [southwest] / 22°59'4"N, 58°5'36"E / 9. –10.III.2023, wadi / lgt. Ondřej Konvička’.

Paratypes (6 ♂, 8 ♀) - 2 ♂ (1 ♂ CKZ, 1 ♂ CPG) same data as holotype ; - 1 ♂ (CCP),‘ OMAN, Ash-Shar. S. Gov. [Ash-SharqiyahSouth Governatore]/ Súr 6 km S [south] at light / 22°30'34"N, 59°30'51"E / 6.III.2023 K. Chobot lgt .; - 5 ex., 1km Sof Shiva / 22°27’06.9”N, 59°35’32.1”E / 26.III.2018, F. Pavel & N. Kazdová lgt. (5) ; - 1 ex., 8 km S of Shiva / 22°29’58”N, 59°36’11.8”E / 25.III.2018, F.Pavel & N. Kazdová lgt.(1) ; - 2 ex., 14 km S of Shiva / 26.III.2018 / Plecháč Jiří (2) ; - 3 ex., Ad Dakhilyah Gov. , 29 km NE of Adam / 22°35'30.846"N, 57°42'6.861"E / 541 m /27.- 28.3.2019 / Wadi Halfeen, individ. coll. at UV light, J. Pelikán lgt. (3). (CMO; CPG) .

All specimens were provided with an additional red printed label: ‘ HOLOTYPUS [or PARATYPUS respectively] / DICRONYCHUS / jarda n. sp. / Platia-Konvička’.

Diagnosis. – A species without impressed v-shaped lines at the posterior half of prosternum allied to D. talhouki Platia & Schimmel, 1997 , known from Saudi Arabia and Yemen, for the same typology of aedeagus, it can be separated for the claws very feebly dilated in the first half and particularly for the different punctuation of pronotum, clearly double, with larger punctures well separated and regularly mixed with denser and fine punctures. The female presents a dimorphic character with two

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deep apical incisions in the last abdominal segment. This character was observed in Dicronychus singularis Platia, 2015 from South Iran.

Description of the holotype

Coloration. – Moderately shiny; head and pronotum blackish to brown-ferruginous, elytra blackish with not well delimited reddish spots in the first half of the disk more or less expanded to nearly all the surface; antennae and legs yellow-ferruginous; covered with dense, yellowish pubescence.

Head. – Frons flat to slightly convex with anterior margin ridged, moderately arcuate and just protruding above the clypeus; punctuation very dense with punctures contiguous, simple and with the same size. – Antennae not reaching for about three articles the apices of the posterior angles of pronotum, slightly serrated from the third article on; second article sub-cylindrical, third-tenth conical, third 1.2x longer than the second and subequal to the following, last sub-ellipsoidal, symmetrically constricted and pointed before the apex.

Pronotum. – Just wider than long, widest at the middle, strongly and regularly convex only with a short and superficial midlongitudinal depression on the basal slope; sides very arcuate from the middle regularly tapering to the posterior angles, these short, obliquely truncate, not divergent, shortly carinate; lateral margins suture-like extending from base to reaching nearly the anterior margin, curved in the middle; punctuation fine and very dense, uniformly distributed, doble; larger, deep and simple punctures are regularly mixed with very fine punctures, these with shortest, shiny interstices.

Scutellum . – Heart-shaped as long as wide, impressed on the middle, deeply emarginate at base.

Elytra. – 2.4x longer than pronotum, at base wide as the base of pronotum, convex; sides widest at the middle; striae regularly punctured, interstriae flat, densely and finely punctured.

Aedeagus. – As in the Fig.2 (length 1. 23 mm).

Size. – Length 6.56-8.55 mm; width 2.18-2.5 mm.

Female. – Extremely similar to the male but with abdominal apex straight with two short incisions.

Bursa copulatrix. – Sclerified as in the Fig. 5.

Etymology. – This species is named after the type locality Al Jarda.