Agrypnus nimatiensis, Sarkar & Saha & Raychaudhuri, 2025

Sarkar, Sutirtha, Saha, Sumana & Raychaudhuri, Dinendra, 2025, Five new click beetles of Agrypnus Eschscholtz, 1829 (Elateridae: Agrypninae) from Buxa Tiger Reserve, West Bengal, India, Records of the Zoological Survey of India 125 (2), pp. 97-109 : 100

Agrypnus nimatiensis sp. nov. ( Figs. 7-12 ; Pl. I, Figs. iii, iv)

Description:

Male ( Fig. 7 ; Pl. I, Figs. III, IV). Body length: 5.8, width:

1.9.

Body ( Fig. 7 ; Pl. I, Fig. III) dark brown, integument shining, setae white, these at regions forming a mosaic pattern, unevenly distributed.

Head ( Fig. 7 ) red brown, punctation simple, coarse, frons broader than long, concave. Frontal carina faintly impressed. Eye pale brown, round, moderately large with distinct facets. Labrum red brown, raised, broader than long, anterior margin convex. Mandible medially red brown, distally black, moderate, dentate, apically narrow, acute. Antennae pale brown, extending just beyond the middle of the pronotum. First segment robust, Third smallest, Fourth onward distinctly serrate and subequal in length to each other. Entirely longitudinally carinate.

Pronotum ( Fig. 7 ) dark brown, broader than long, disc strongly convex. Medially with a longitudinal shallow groove, flanked by a pair of tubercles near the posterior slope. Punctation ( Fig. 8 ) simple. Setae white, denser toward the lateral margin. Submarginal line present. Anterior margin concave with a round anterior angle. Lateral margin entire, convex, sinuate before hind angle. Hind angle truncate; carina present, short.

Scutellum ( Fig. 7 ) dark brown, pentagonal, flat, setae dense, basally emarginated.

Elytra ( Fig. 7 ) 2.12×longer than pronotum, red-brown. Striae punctate. Interstriae flat, punctures ( Fig. 9 ) simple, with white setae. Basally emarginated. Apically round.

Prosternum red brown, longer than broad, convex, with distinct chin piece. Punctation simple, coarse, with white pubescence. Prosternopleural suture slightly concave, broadly open up to the middle of the prosternum. Hypomeron with shallow depression for accommodating protarsi. Prosternal spine long, emarginated, medially with a longitudinal narrow keel, apically round.

Mesepisternum and mesepimeron do not form part of the mesocoxal cavity. Metasternum with a shallow groove for receiving mesotarsi.

Metacoxal plate incurved at middle.

Abdomen red-brown. Punctuation doubled. Pubescence evenly distributed.

Leg ( Fig. 10 ) brown, claw ( Fig. 11 ) simple, setae present at base of claw.

Genitalia ( Fig. 12 ; Pl. I, Fig. IV):

Basal piece wide, arms blunt at apex, anterior margin broadly ‘V’ shape, posterior margin weakly concave, lateral margin feebly arcuate, outer margin moderately sclerotized, thin and line like, rest feebly sclerotized; median lobe longer than parameres, arms strongly sclerotized compare to rest, moderate, arcuate, pointed at base, not exceeding ventral posterior margin of parameres, median lobe gradually narrowing from base to apex, apex rounded, furcae not reaching the anterior margin of parameres; inner lateral margin of parameres throughout and base of outer lateral margin strongly sclerotised, outer lateral margin sinuate, gradually broadening from basal to proximal, proximal to distal parallel sided, distal teeth small, pointed, apex rounded, with more than three hairs.

Remarks: None of the Indian congeners examined shows any resemblance to the present species.

Etymology: The species name is derived from the collection location.

Material examined: Holotype: Male: India, West Bengal, Jalpaiguri, BTR, Nimati, Coll. D. Raychaudhuri, 24-vi-

2003.

Figures

Figs. 7-12: 7. Dorsal habitus; 8. Pronotal puncture; 9. Elytral puncture; 10. Leg; 11. Claw; 12. Male genitalia