Zeugophorella pallescens Sekerka, 2013

Sekerka, Lukáš & Vives, Eduard, 2013, Review of Zeugophorinae of New Guinea, with description of Zeugophorella gen. nov. and new synonyms of Zeugophora (Coleoptera: Megalopodidae), Acta Entomologica Musei Nationalis Pragae 53 (2), pp. 747-762 : 754-756

Zeugophorella pallescens Sekerka sp. nov.

( Fig. 13 )

Type material. HOLOTYPE: J (glued): “ IRIAN JAYA, Manokwari | Prov., Anggi or Iranmeba | 1500-2100 m, 19.- 25.III. | 1993, leg. A. RIEDEL. [white, printed and cardboard label] || HOLOTYPUS | Zeugophorella | pallescens sp. nov. | L. Sekerka des. 2013 [red, printed and cardboard label with black frame]” ( SMNS).

Diagnosis. Bicolorous body places it near Z. bicolora and Z. elongata . Zeugophorella elongata differs in having a mostly yellow pronotum with more prominent (sub-angulate) lateral angles (obtuse and less marked in Z. pallescens sp. nov.). Zeugophorella bicolora differs in possessing golden dorsal pubescence (silver in Z. pallescens ), having the lateral angles of the pronotum weakly marked and rounded (obtuse but distinct in Z. pallescens ), the pronotal punctation dense but with distinct interspaces (very dense with rudimental interspaces in Z. pallescens ), the terminal four antennomeres rusty (antennae uniformly pitchy in Z. pallescens ) and the elytra black after their apical 2/3 (only apical 1/5 black in Z. pallescens ).

Measurements. Length of body: 4.9 mm, width of body: 1.7 mm, length/width of body ratio: 2.9, length of pronotum: 0.8 mm, width of pronotum: 1.0 mm, width/length of pronotum ratio: 1.3.

Description of holotype. Head black with fulvous spot behind eyes. Mouthparts and antennal insertions rusty. Antennae pitchy. Pronotum black with basal 1/4 yellow. Scutellum rusty. Elytra yellow, apical fifth pitchy. Thorax black with area around coxae rusty.Abdomen pitchy brown. Coxae, trochanters and 2/3 of femora yellow, rest of leg pitchy.

Pronotum distinctly transverse, 1.25 times wider than long. Lateral angulation prominent but obtuse, base strongly constricted. Surface of pronotum very densely and coarsely punctate, punctures touching each other, interspaces rudimental, and covered with silver pubescence.

Scutellum subquadratic smooth, impunctate and pubescent.

Base of elytra slightly sinuate, humeral angles almost not protruding anterad. Elytra densely and coarsely punctate. Punctation irregular, intervals as broad as puncture diameter or slightly wider. Whole elytra pubescent, pubescence silver, on apex only slightly reaching behind elytral margin.

Antennae long and thick, as long as 0.7 body length (3.3 mm). Length ratio of antennomeres: 100: 58: 93: 126: 93: 92: 94: 94: 89: 84: 108. Antennomere III 1.6 times longer than II; antennomere IV, the longest, 1.3 times longer than III and 2.2 times than II.

Male genitalia. Aedeagus short, stout, parallel-sided, with very long and simple basal apodemes, and strongly tappered and projecting apex ( Figs 20–21 ). Apex of tegmen emarginate and appears bilobate, setose ( Fig. 22 ). Spiculum Y-shaped ( Fig. 23 ).

Figures

Figs 4–15.New Guinean Zeugophorinae.4 – Zeugophora aethiops Medvedev, 1996 (holotype, 3.0 mm), 5 – Z.alticola (Gressitt, 1959) (3.9 mm), 6 – Z. enduwakombugoensis Sekerka, 2007 (holotype, 3.4 mm), 7 – Z.papuana Medvedev, 2009 (paratype, 3.1 mm), 8, 9 – Z. setsukoae Gressitt, 1965 (3.6 mm and 3.9 mm), 10 – Zeugophorella bicolora (Medvedev, 1996) (holotype, 4.7 mm), 11 – Z.clypealis (Medvedev, 1996) (holotype, 5.1 mm), 12 – Z. gracilicornis (Medvedev, 1996) (holotype, 3.8 mm), 13 – Z. pallescens sp. nov. (holotype, 4.9 mm); 14 – Z. riedeli (Medvedev, 1996) (paratype, 5.2 mm), 15 – Z. elongata (Gressitt, 1959) (holotype, 4.75 mm after original description).

Figs 16–23. Zeugophorella genitalia. 16–18 – Z. gracilicornis (Medvedev, 1996), 19 – Z. riedeli (Medvedev, 1996), 20–23 – Z.pallescens sp. nov. 16, 20 – aedeagus dorsal; 17, 21 – aedeagus lateral; 18, 22 – tegmen; 19 –spermatheca; 23 – spiculum.