Anthelephila antennalis, Kejval, 2019

Kejval, Zbyněk, 2019, Studies of the genus Anthelephila Hope (Coleoptera: Anthicidae). Part 19. New species from Indonesia and Malaysia, Acta Entomologica Musei Nationalis Pragae 59 (1), pp. 171-184 : 172-173

Anthelephila antennalis sp. nov.

( Figs 1–4 )

Formicomus dubius (misidentification): UHMANN (1994): 668 (specimens from Malaysia: Perak)

Type locality. Malaysia, Pahang, 15 km E of Kampung Dong, 3°53′N 102°01′E, Benom Mountains, altitude 700 m.

Type material. HOLOTYPE: ♂, ‘ MALAYSIA, Benom Mts., 15 km E Kampong Dong, 3.53N 102.01E, 700 m, 1.iv.1998, D. Hauck lgt. [p]’ ( NMPC). PARATYPES: 6♂♂ 5♀♀, same data as holotype ( ZKDC, NMPC); 96 ♂♂ 58♀♀, ‘ MALAYSIA; Benom Mts. , 15 km E Kampong Dong; 700 m 3,53N 102,01E; 1.iv.1998; Dembický & Pacholátko leg. [p]’ ( NHMB, ZKDC, DCDC); 1 ♂, ‘W MALAYSIA – Pahang Banjaran Bnom Mts . 20 km S of Kampong Ulu Dong, 17-23.iv.1997, 1500-1900 m, P. Čechovský leg. [p; sic!]’ ( ZKDC); 6 ♂♂ 1 ♀, ‘ MALAYSIA W Cameron Highlands , RINGLET env., 15.iv.2000, M. Snížek leg. [p]’ ( ZKDC); 2 ♂♂ 5 ♀♀, ‘ Malaysia: Perak Bukit Baring Gerik, 800–900 m 8.2.1991 P. Schwendinge [p; P. Schwendinger lgt.] // Formicomus dubius Krekich det. G. Uhmann 1993 [p+h]’ ( MHNG, ZSMC).

Additional material examined. MALAYSIA: KELANTAN: 1 ♀, Kampong Raja env. , 10.–16.iv.1999, V. Kabourek lgt. ( ZKDC). PAHANG: 1♀, Cameron Highlands, Tanah Rata env. , 1600 m, 23.–31.vii.1993, R. Schuh lgt. ( ZKDC). PERAK: 1 ♀, W Perak , Cameron Highlands , Ringlet , 800–1000 m, P. Pacholátko lgt. ( ZKDC).

Description. Male (holotype). Body length 4.5 mm. Body black, unicolorous; antennae and legs brownish-black.

Head 1.2 times as long as wide, somewhat angled postero-medially (widely parabolic), distinctly differentiated from short neck; tempora strongly narrowing posteriad, posterior angles absent. Eyes medium-sized, rather convex. Dorsal surface glossy, distinctly unevenly punctate; punctures coarser, umbiliform anteriorly, delicate and sparser basally, distinctly separated. Setation subdecumbent; scattered longer tactile setae. Antennae only moderately enlarged in terminal third; antennomere I 2.2 times, X twice, XI 4.6 times as long as wide.

Pronotum 1.5 times as long as wide, distinctly narrower than head including eyes, nearly evenly rounded anteriorly, strongly narrowed and impressed (constricted) postero-laterally in dorsal view; pronotal disc somewhat flattened medially, nearly evenly moderately convex in lateral view. Surface smooth and glossy; disc punctate, similarly as head, with some transverse wrinkles in front of smooth antebasal area; lateral sides largely impunctate, postero-lateral impressions wrinkled and adjacent dorso- lateral surface rugose. Setation as on head.

Mesoventrite with slight indication of simple, moderately wide, median longitudinal bulge, at most slightly convex in lateral view, narrowed and with several long, coarse setae in median line posteriorly; metaventrite simple.

Elytra 1.7 times as long as wide, conjointly rounded apically; humeri distinct, postscutellar impression at most very slightly indicated. Surface glossy, distinctly punctate; punctation double, evenly developed, setiferous punctures widely separated. Setation uniform, longer and more raised than on head, decumbent; numerous erect tactile setae.

Metathoracic wings developed.

Fore legs modified ( Fig. 1 ); profemoral process weakly developed; protibiae distinctly angled on inner side at about mid-length; all tibiae with two terminal spurs; penultimate tarsomere widened/flattened distally, with terminal tarsomere articulated dorsally near base for all tarsi.

Abdominal sternum VII ( Fig. 2 ) widely emarginate and somewhat sinuous postero-medially. Sternite VIII ( Fig. 3 ); paired prongs elongate, slender, with several lobules on dorsal side, and conspicuously long and coarse setae laterally in basal half. Tergum VII narrowly rounded and slightly emarginate apically. Tergite VIII forming a pair of sclerites, narrowly connected medially, narrowly rounded apically. Apical sclerite of segment IX inconspicuous. Aedeagus ( Fig. 4 ); apical portion of tegmen 0.3 times as long as basal-piece, bilobed apically.

Female. Externally differing from male as follows: fore legs quite simple; shorter antennae (XI 3.3 times as long as wide); abdominal sternum VII simple, moderately angled apically; tergum VII subtriangular, with slightly produced, narrowly rounded apex.

Variation. Body length (♂ ♀) 3.3–4.5 mm.

Differential diagnosis. Anthelephila antennalis sp. nov. is close to A. utara sp. nov., but differs in many details of male characters, e.g. more elongate terminal antennomere, slight profemoral process, more prominent protrusion of metatibiae (situated at mid-length), emarginate posterior margin of sternum VII, scantily setose apical portion of paired prongs, and longer and slender apical lobes of tegmen.

Remarks. Some paratypes were previously identified as Formicomus dubius Krekich-Strassoldo, 1929 and recorded as such by UHMANN (1994).

Etymology. Named in reference to the extremely elongate terminal antennomeres in males; adjective.

Distribution. Malaysia (Kelantan, Pahang, Perak).

Figures

Figs 1–4. Anthelephila antennalis sp. nov., male, holotype: 1 – profemur (left) and protibia (right); 2 – sternum VII; 3 – prongs of sternite VIII; 4 – apical portion of tegmen. Scale bars: 0.2 mm – A (Figs 2, 3), B (Fig. 4); 0.5 mm – C (Fig. 1).