Archedinus Morón & Krikken, 1990, Moron & Krikken, 1990Archedinus 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

publication ID

http://doi.org/ 10.2478/aemnp-2018-0031

publication LSID

lsid:zoobank.org:pub:0610B52C-FE2C-49F1-A16F-0B14881AF4F2

DOI

http://doi.org/10.5281/zenodo.5062172

persistent identifier

http://treatment.plazi.org/id/03B787A5-4871-FC4A-A6AE-02AE8EE2D377

treatment provided by

Felipe

scientific name

Archedinus Morón & Krikken, 1990 Archedinus antoshkai
status

 

Archedinus Morón & Krikken, 1990  

Type species. Archedinus relictus Morón & Krikken, 1990: 76   .

Diagnosis. This genus is distinguished from other members of the tribe Incini   by the following combination of characters: body length 17–27 mm, dorsal integument shiny, dark-brown to black; clypeal anterior margin sinuated, male with short clypeal horn or elevated clypeal margin lacking lateral or medial clypeal horns (present in Golinca   , Inca   and Pantodinus   ); eyes with strong supraocular ridges; male with antennal club longer than pedicel and funicle together, mentum with anterior margin sinuate or rounded; pronotum coarsely punctate, without posterior impression; anterior prosternal process projected, longer than procoxal length, elytra deeply striate without waxy surface; pterothoracic setae sparse; profemur with a preapical projection; protibia with 3 external teeth; meso- and metatibiae expanded, tridentate; aedeagus with parameres simple or bifurcate.

Archedinus   is most similar to Pantodinus   due to the sinuate antero-ventral clypeal margin and the well marked elytral striae. However, Archedinus   can be distiguished by the strong supraocular ridges, the prosternal process being longer than the procoxal anterior face, and by the sparse setae on the pterosterna (MORÓN & VAZ DE MELLO 2007).

The third stage larva of A. relictus   was diagnosed from other Incini ( MORÓN 1995)   by having mandibles without a stridulatory area; premolar area on left mandible with 2 teeth; dorsoepicranial setae absent; maxillary stridulatory area with 12 irregular, non-pointed teeth; last antennomere with 7–13 dorsal sensory spots; tarsal claws with 2 internal preapical setae; spiracle respiratory plates with irregular, ameboid “holes”; dorsal and ventral abdominal sclerites with long setae.

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

( Figs 1A View Fig ; 2A,C,E View Fig ; 3 View Fig 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”. GoogleMaps  

Description. Male (holotype). Total length: 17.5 mm, humeral width: 7.5 mm, maximum width: 8.5 mm ( Figs 1 View Fig A–B). Color. Ventrally and dorsally shiny black, surface in punctures dull. Head. Surface coarsely and irregularly punctate ( Fig. 2A View Fig ), 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 View Fig ), 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 View Fig ). 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 View Fig 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 View Fig in A. antoshkai   versus Fig. 2B,D View Fig in A. howdeni   ), in A. howdeni   the frons is with an elongate, triangular depression ( Figs 2A,C View Fig in A. antoshkai   versus Fig. 2B View Fig in A. howdeni   ), the third antennomere is small, being as long as the fourth ( Fig. 3F View Fig in A. antoshkai   versus Fig. 3G View Fig in A. howdeni   ), the mentum is elongate with a rounded anterior margin ( Fig. 3D View Fig in A. antoshkai   versus Fig. 3E View Fig in A. howdeni   ), pronotum with coarser lateral margins ( Figs 2C,E View Fig in A. antoshkai   versus Figs 2D,F View Fig in A. howdeni   ) and the aedeagus with apices of the parameres simple, without a small lateral projection ( Fig. 3A View Fig in A. antoshkai   versus Fig. 3C View Fig 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.

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

( Figs 1A View Fig ; 2A,C,E View Fig ; 3 View Fig 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”. GoogleMaps  

Description. Male (holotype). Total length: 17.5 mm, humeral width: 7.5 mm, maximum width: 8.5 mm ( Figs 1 View Fig A–B). Color. Ventrally and dorsally shiny black, surface in punctures dull. Head. Surface coarsely and irregularly punctate ( Fig. 2A View Fig ), 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 View Fig ), 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 View Fig ). 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 View Fig 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 View Fig in A. antoshkai   versus Fig. 2B,D View Fig in A. howdeni   ), in A. howdeni   the frons is with an elongate, triangular depression ( Figs 2A,C View Fig in A. antoshkai   versus Fig. 2B View Fig in A. howdeni   ), the third antennomere is small, being as long as the fourth ( Fig. 3F View Fig in A. antoshkai   versus Fig. 3G View Fig in A. howdeni   ), the mentum is elongate with a rounded anterior margin ( Fig. 3D View Fig in A. antoshkai   versus Fig. 3E View Fig in A. howdeni   ), pronotum with coarser lateral margins ( Figs 2C,E View Fig in A. antoshkai   versus Figs 2D,F View Fig in A. howdeni   ) and the aedeagus with apices of the parameres simple, without a small lateral projection ( Fig. 3A View Fig in A. antoshkai   versus Fig. 3C View Fig 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.

NMPC

National Museum Prague

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Cetoniidae

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Cetoniidae

Genus

Archedinus