Archedinus antoshkai, Seidel & Arriaga-Varela & Sousa, 2018

Seidel, Matthias, Arriaga-Varela, Emmanuel & Sousa, Rafael, 2018, Catalogue of the Incini with the description of the first Archedinus species from Honduras (Coleoptera: Scarabaeidae: Cetoniinae), Acta Entomologica Musei Nationalis Pragae (Acta. Ent. Mus. Natl. Pragae) 58 (2), pp. 389-405 : 391-394

Archedinus antoshkai Seidel & Arriaga-Varela, sp. nov.

( Figs 1A ; 2A,C,E ; 3 A–B,D,F)

Type material. HOLOTYPE: ♁ ( NMPC), label data: “ HONDURAS: Lempira / Department, P.N. Celaque Cerro / Las Minas / 14°32´50´´N, 88°40´11´´W / 01-04.vii.2014, 2600m / V. Sinyaev & M. Márquez lgt. // ex. Matthias Seidel / Collection // Archedinus n. sp. / det. M. Seidel 2016 // HOLOTYPE / Archedinus antoshkai / sp. nov. / M. Seidel & E. Arriaga-Varela / des. 2017”.

Description. Male (holotype). Total length: 17.5 mm, humeral width: 7.5 mm, maximum width: 8.5 mm ( Figs 1 A–B). Color. Ventrally and dorsally shiny black, surface in punctures dull. Head. Surface coarsely and irregularly punctate ( Fig. 2A ), with punctures ranging in diameter from 27.5–87.5 μm. With a deep, long, triangular excavation, of irregular triangular shape narrowing down from frons to clypeus to a third of its width. Clypeus covered by short, tawny setae, abruptly constricted at base to 0.7 times of apical width, anterior clypeal margins sinuate with anterolateral corners reflexed. Maximum width of head capsule 3.1 mm; maximum width of clypeus 1.5 mm. Interocular distance equals 3.1 maximum transverse eye diameters.

Labium elongate, narrowing anteriorly with anterior margin slightly rounded ( Fig. 3D ), deeply punctate, setigerous; setae long, tawny. Distal maxillary palpomere 0.8 mm in length, subcylindrical, weakly curved, apex truncate. Third palpomere subfusiform, rounded, not connate with second, enlarged, 0.6 mm long. Antennae with 10 antennomeres, antennal club composed of three enlarged, lamellate antennomeres, club 2.6 mm long, 1.7 times longer than preceding six antennomeres combined; antennomere 7 wider than long, with narrowed, short anterior projection; antennomere 6 longer than wide, with apex obliquely truncate, without anterior projection; antennomere 3 as long as antennomere 4 or 5, antennomere 3 as long as wide, pedicel nearly globular, as wide as long; scape elongate-pyriform.

Prothorax. Pronotum about 1.3 times wider than long; 1.5 times wider at posterior angles than at anterior angles, margins rounded, slightly more strongly convergent to posterior angles ( Figs 2C,E ). Dorsal surface coarsely and irregularly punctate, punctures more dense in anterior half, punctures deep, ranging from 37–325 μm in diameter. Disc with a longitudinal depression on midline, and 2 depressions on each side, 1 large, elongate at anterior half, vanishing towards antero-lateral corners, and a small, shallower one at posterior 3/4, depressions with punctures wider and confluent. Prosternum smooth on sides, with long prosternal process, acute, with briefly rounded apex, and many long, tawny setae projected anteriad.

Elytra with margins curved in anterior fifth, then subparallel to rounded apical fourth; with 10 wide, deep striae, each with irregular row of rounded to elongate ellipsoid, foveate punctures; striae I–V extend from anterior border to apical callus; striae VI–IX extend from humerus to apical umbone; stria X extends along lateral margin but does not reach apex; interstriae shiny, with fine punctures and sparser, larger, foveate punctures; epipleura continuously narrowing posteriorly to just before apex. Mesothorax. Mesoventrite coarsely punctate, depressed at center, abruptly upturned near anterior borders of mesocoxae. Wings well developed. Metaventrite convex at sides, moderately depressed around discrimen; coarsely punctate towards anterolateral corners with many slender, decumbent to erect setae. Legs. Profemur with a preapical, blade-like, dorsal projection, with rounded apex. Protibia with a wide inner basal notch.All tarsi robust, with large, sickle-shaped claws.

Abdomen. Ventrites convex, almost glabrous, with sparse, small decumbent setae, finely punctate, punctures narrowly transverse; last ventrite with deeper, more rounded punctures on posterior margin which is slightly raised and briefly emarginate at middle. Pygidium glabrous, shiny, with dense, fine micropunctures mixed with sparse, large, sometimes confluent, round punctures, finely rugose toward basal angles; without waxy spots; posterior margin nearly rounded. Genitalia. Aedeagus with large basal piece, slightly convex; tectum shallowly concave; parameres elongate, sinuous in lateral view, with apical third bifurcate in apical third in dorsal view, apex rounded ( Figs 3 A–B).

Female. Unknown.

Differential diagnosis. Archedinus antoshkai is most similar to A. howdeni based on the emarginate clypeal projection, anterior prosternal process with rounded apex, and the apices of the parameres not being bifurcate. However, it can be distinguished from it by its smaller size (17.5 mm in A. antoshkai versus 25–27 mm in A. howdeni ), the clypeal projection with anterior margin more strongly emarginate medially ( Fig. 2A in A. antoshkai versus Fig. 2B,D in A. howdeni ), in A. howdeni the frons is with an elongate, triangular depression ( Figs 2A,C in A. antoshkai versus Fig. 2B in A. howdeni ), the third antennomere is small, being as long as the fourth ( Fig. 3F in A. antoshkai versus Fig. 3G in A. howdeni ), the mentum is elongate with a rounded anterior margin ( Fig. 3D in A. antoshkai versus Fig. 3E in A. howdeni ), pronotum with coarser lateral margins ( Figs 2C,E in A. antoshkai versus Figs 2D,F in A. howdeni ) and the aedeagus with apices of the parameres simple, without a small lateral projection ( Fig. 3A in A. antoshkai versus Fig. 3C in A. howdeni ).

Etymology. The new species is named after Anton Olegovich Kozlov (Moscow, Russia), who made the specimen available for study and generously donated the holotype to us. The name refers to the diminutive form of his first name, “Antoshka”, used by friends; noun in apposition.

Natural history. The species occurs in the highest mountain in Honduras in a tropical cloud forest at 2600 m elevation. Female specimens, immature stages, and life cycle are unknown.

Distribution. Only known from the type locality: Cerro Las Minas in Celaque National Park, Lempira Department, Honduras.

Figures

Fig. 1. Habitus views of Archedinus spp. A–B – A. antoshkai sp. nov., C – A. howdeni Morón & Vaz-de-Mello, 2007. A, C – dorsal habitus. B – lateral habitus. Image 1C by courtesy of François Génier.

Fig. 2. Details of Archedinus spp. A, C, E – A. antoshkai sp. nov. B, D, F – A. howdeni Morón & Vaz-de-Mello 2007. A‒B – head dorsal view. C‒D – head antero-lateral view. E‒F – pronotum dorsal view. Images 2B,D,F courtesy of François Génier.

Fig. 3. Details of Archedinus spp. A, B, D, F – A. antoshkai sp. nov. C, E, G – A. howdeni Morón & Vaz-de-Mello 2007.A, C – aedeagus dorsal view. B – aedeagus lateral view. D–E – outline of mentum. F–G – antennae with arrow indicating third antennomere. Images 3C,G by courtesy of François Génier.