Hemipeplus harkoneni KC & Pollock, 2025

Kc, Sajan & Pollock, Darren A., 2025, Review of the Hemipeplinae (Coleoptera: Mycteridae) fauna of the world with descriptions of twenty-nine new species, Zootaxa 5574 (1), pp. 1-140 : 87-91

Hemipeplus harkoneni KC & Pollock , sp. nov.

http://zoobank.org/ urn:lsid:zoobank.org:act:68A28778-B657-40EB-8A80-0498EDB87DA9

(Figs 40.1, 40.2, 40.3, 65)

Type Material. Holotype, male, labeled: ‘ Philippinen Mindoro , Mangarin [underside of label] Böttcher XI.1917 / Zool. Mus. Berlin / [green label] ♂ / [blank red label] / [red label] HOLOTYPE ♂ Hemipeplus harkoneni KC & Pollock’, ZMHB. Twenty-four paratypes: 1 specimen, male, labeled same as holotype, in ZMHB; 2 specimens, sex unknown, labeled same as holotype, in ZMHB; 2 specimens, 1 male, 1 female, labeled: ‘Philippinen, Mangarin. XI.1917 leg. Böttcher’, in ZMHB; 1 specimen, male, labeled: ‘ Tarragona, Leyte I., Philippine Islds. VI: 12: 1945 / Col. & Pres. by C.L. Remington / at light’, in FMNH; 1 specimen, female, labeled: ‘ Los Banos Luzon, P. I. XI.22- 26.1947 / W.H. Lange Collector / NMNH’, in NMNH; 1 specimen, female, labeled: ‘ Luzon: Laguna: Mt. Makiling , 250m. XI-23-53 / J. L. Gressitt Collector / BPBM’, in BPBM; 2 specimens, 1 female, 1 sex unknown, labeled: ‘ Ligao, IX. 78.coconut / R. Mosquite coll. / Philippines Luzon I. / C.I.E. A11473 / Hemipeplus sp. (unnamed in B.M.) det. R. B.Madge, 1979 [in one specimen only]/ BMNH’, in BMNH; 1 specimen, male, labeled: ‘ San Pablo. Luzon, P. I., XI. 23.1947 / W.H. Lange Collector / NMNH’, in NMNH; 2 specimens, sex unknown, labeled: ‘ Mt. Makiling , Luzon, Baker / NMNH’, in NMNH; 1 specimen, sex unknown, labeled: ‘ San Jose, Leyte, P. I. I:13:1949 / Col. & pres. by Eugene Ray / at light / FMNH’, in FMNH (Fig. 40.2); 2 specimens, sex unknown, labeled: ‘ San Jose, Leyte, P. I. III-1-4-1945 / Col. & pres. by Eugene Ray / at light / FMNH’, in FMNH; 2 specimens, sex unknown, labeled: ‘ San Jose, Leyte, P. I. II.25.45 / Col. & pres. by Eugene Ray / at light / Hemipeplus det. Newton 1993 [in one specimen only] / FMNH’, in FMNH; 1 specimen, sex unknown, labeled: ‘ Tarragona, Leyte I., Philippine Islds. VI:17:1945 / Col. & pres. by C.L. Remington / at light / FMNH’, in FMNH; 1 specimen, sex unknown, labeled: ‘ Tarragona, Leyte I., Philippine Islds., V:28:1945. / Col. & pres. by C.L. Remington / at light / FMNH’, in FMNH; 1 specimen, sex unknown, labeled: ‘ Tarragona, Leyte I., Philippine Islds., VI:24:1945. / Col. & pres. by C.L. Remington / at light / FMNH’, in FMNH; 2 specimens, 1 male, 1 sex unknown (on same pin), labeled: ‘[underlined in yellow] SARAWAK: / Biawak on nipah palm 17-vi-1968 Coll: S. Juses / Pres by Com Inst Ent BM 1971-1 / 9104’, in BMNH (Fig. 40.3); 1 specimen, female, labeled: ‘[underlined in yellow] SARAWAK: / Biawak on nipah 18-vi-68 coll. Vincent A. / Pres by Com Inst Ent BM 1971-1 / 8985’, in BMNH .

Derivation of Specific Epithet. This species (noun in the genitive case) is named in allusion to the first author’s late friend from Finland, Reijo Härkönen, who helped him in his research during its early phases.

Diagnosis. Hemipeplus harkoneni sp. nov. can be distinguished by its large eyes, lack of temples, and pronotal pad narrower than in H. australicus (Figs 39.1C, 39.2C). Hemipeplus harkoneni sp. nov. has the following diagnostic features: temples absent; scape short, moniliform; eyes large (longer than scape + pedicel), wide and convex; pronotum subcordiform, wide and flat to more elongate with convex disc; anterior pronotal emargination clear; anterior half wider than posterior half; pronotal pad moderate; pronotal angles rounded; pronotal lobe truncate/ indistinct without a clear median notch; body relatively more wide to elongate; elytra more or less flat; color uniformly pale to deeper brown; distribution: Malaysia ( Sarawak), Philippines (Bangui, Leyte, Ligao, Luzon, Mangarin, San Jose, San Pablo).

Description. Measurements (in mm)—GHW: 0.62–0.70; HL: 0.58–0.65; AL: 0.95–1.06; GPW: 0.66–0.73; PL: 0.54–0.66; GEW: 0.83–0.93; EL: 2.68–3.38; TL: 3.80–4.69.

Head (Figs 40.1B, 40.2B, 40.3B) wide ( GHW / HL: 1.07–1.08); eyes large (longer than scape + pedicel), wide and convex; temples absent; occiput distinctly raised; antennae shorter than head and pronotum length combined; antennal scape short and moniliform; pedicel small moniliform; antennomere III more elongate and apically dilated; IV short and moniliform; V short and subcylindrical; VI –X subtriangular or bowl shaped, each larger than the next; XI subpyriform with apex narrowed after median notch; lateral mandibular tooth very small. Pronotum (Figs 40.1B, 40.2B, 40.3B) wide ( GPW / PL: 1.11–1.22), wider in some specimens than others; anterior margin slightly (Fig. 40.3B) to more deeply (Figs 40.1B, 40.2B) emarginate; anterolateral angles rounded and produced; lateral margins sinuate; posterior half much more contracted; posterolateral angles rounded and obtuse; posterior lobe truncate without significant median notch; pronotal pad (Figs 40.1C, 40.2C, 40.3C) present, more prominent in some specimens than others; pronotal pits shallow to deep, grooves present when deep. Scutellar shield elliptical to subhexagonal, transverse, not twice as wide as long. Elytra (Figs 40.1A, 40.2A, 40.3A) elongate ( EL / GEW: 3.29–3.63), more or less flat; vestiture short and dense; apical patch long, rufopiceous and prominent to faint light brown. Ventral surface. Prosternal process short, not extending posterior of procoxae; hypomeral edges fused (in holotype) to very thinly separated; mesosternal process narrow and linear. Color varies from uniformly testaceous to rufotestaceous with rufous head and pronotum .

Male Genitalia (Figs 40. 1D–F, 40. 3D–F). (Tegmen length = 0.35–0.36 mm (n = 2)) Lobe of basale long and slender with rounded apex; shoulders pointed upward, as in H. joerebeccae sp. nov. and H. antennatus sp. nov.; apicale and basale with distinct suture; parameres arcuate at apices with tips blunt; penis longer than tegmen.

Variation. Several specimens from Luzon are more elongate with elytra dark, while several specimens from Ligao and Leyte are wider and light brown.

Geographical Distribution (Fig. 65). Malaysia ( Sarawak), Philippines (Bangui, Leyte, Ligao, Luzon, Mangarin, San Jose, San Pablo).

FIGURE 40.1. Hemipeplus harkoneni sp. nov. (Holotype). A. Dorsal habitus (with scale bar); B. Dorsal head and prothorax; C. Lateral view of head and prothorax; D. Male genitalia dorsal view with spiculum gastrale; E. Tegmen dorsal view (with scale bar); F. Tegmen lateral view with one paramere removed.

Natural History. According to specimen label data, H. harkoneni sp. nov. is associated with Cocos nuciferae L. or coconut ( Arecaceae ) and Nypa fruticans Wurmb or Nipah Palm ( Arecaceae ); adults have also been collected from light traps.

FIGURE 40.2. Hemipeplus harkoneni sp. nov. (male). A. Dorsal habitus (with scale bar); B. Dorsal head and prothorax; C. Lateral view of head and prothorax.

FIGURE 40. 3. Hemipeplus harkoneni sp. nov. (from Malaysia). A. Dorsal habitus (with scale bar); B. Dorsal head and prothorax; C. Lateral view of head and prothorax; D. Male genitalia dorsal view without spiculum gastrale; E. Tegmen dorsal view (with scale bar); F. Tegmen lateral view with one paramere removed.