Drilus mertliki, Kobieluszova, Lucie & Kundrata, Robin, 2015

Kobieluszova, Lucie & Kundrata, Robin, 2015, Taxonomic review of Drilus Olivier, 1790 (Elateridae: Agrypninae: Drilini) from Asia Minor, with descriptions of seven new species and comments on the female antennal morphology in Drilini, Zootaxa 4012 (1) : -

Drilus mertliki sp. nov.

( Figs 5 , 16 , 25 , 37 )

Type material. Holotype, male, " Turkey – vil. Rize, Ikizdere env., 24.6.2006, Josef Mertlik Lgt." ( PCRK); Paratype, male, " TR – vil. Trabzon, 15 km W of Arakli, Konakönü env. 23.6.2006, Josef Mertlik Lgt." ( PCRK). Type locality. Turkey, Rize, Ikizdere env.

Diagnosis. Drilus mertliki sp. nov. is similar to D. sanliurfensis sp. nov., but differs from the latter by the pronotum with convex lateral margins and prominent hind angles ( Figs 16, 19 ), and the narrower paramera ( Figs 37, 41 ). The similarly-colored Drilus sp. from Caucasus differs from D. mertliki sp. nov. in the relatively shorter phallus and differently shaped paramera ( Figs 37, 45 ).

Description. Male (holotype). Body 3.2 times longer than width at humeri, dark brown to black, antennae brown, scape, pedicel, legs and last abdominal ventrite yellowish brown; body covered with yellow pubescence ( Fig. 5 ). Head including eyes about as wide as anterior margin of pronotum ( Fig. 16 ), with shallow depression medially, lateral margins above antennal sockets slightly elevated, sparsely punctured, with sparse semierect pubescence; clypeal margin widely concave. Eyes medium-sized, their frontal distance 1.8 times eye diameter. Mandibles curved, shiny, incisor margin with conspicuous tooth in middle part. Labrum transverse; maxillary palpi slender, ultimate palpomere apically slightly flattened, obliquely cut. Antennae pectinate, reaching one third of elytral length, antennomere 3 serrate, antennomeres 4–10 pectinate, apical antennomere simple, longest ( Fig. 25 ). Pronotum slightly convex, transverse, widest at hind agles, 1.7 times wider posteriorly than length at midline. Anterior margin almost straight, lateral margins sinuate, posterior margin slightly convex. Anterior angles inconspicuous; posterior angles prominent, acute, slightly turned upward ( Fig. 16 ); surface of disc sparsely covered with fine punctures, with sparse semierect setae. Scutellum flat, gradually narrowed, sparsely punctured; apex rounded. Prosternum transverse, slightly wrinkled, frontal margin almost straight, prosternal process minute, steeply declivitous. Mesoventrite widely v-shaped, anteromedially depressed. Elytra subparallel-sided, wrinkled, sparsely and finely punctured, covered with sparse semierect long pubescence, denser apically. Legs slender, slightly compressed, with sparse, long, semierect setae, tarsomeres 1–4 gradually shortened, tarsomere 4 shortest, apical tarsomere slender, about as long as antennomere 1, slightly longer than combined lengths of tarsomeres 3 and 4. Aedeagus with robust, considerably curved phallus; paramera long, slender, covered with setae, mainly ventrally; phallobase long, v-shaped ( Fig. 37 ). Female and immature stages are unknown.

Measurements. Holotype. BL 6.5 mm, EL 5.0 mm, WHe 1.3 mm, WHum 2.0 mm, PL 1.0 mm, PW 1.6 mm, Edist 0.8 mm, Ediam 0.4 mm. Paratype. BL 5.5 mm, EL 4.2 mm, WHe 1.1 mm, WHum 1.7 mm, PL 0.8 mm, PW 1.4 mm, Edist 0.7 mm, Ediam 0.4 mm.

Distribution. Northern Turkey (Rize and Trabzon Provinces; Fig. 55 ).

Etymology. The species name is a patronym in honor of Mr. Josef Mertlík (Opatovice nad Labem, Czech Republic).

Remarks. Paratype has slightly deformed left side of pronotum and is missing the left antenna (only scape and pedicel preserved) and right foreleg.

Figures

FIGURE 55. The distribution of Drilus species in Asia Minor.

FIGURES 1 – 12. Habitus images of Drilus species. 1, Drilus akbesianus (Fairmaire, 1895); 2, D. badius sp. nov.; 3, D. huijbregtsi sp. nov.; 4, D. latithorax Pic, 1902; 5, D. mertliki sp. nov.; 6, D. obscuricornis Pic, 1899; 7, D. rectus Schaufuss, 1867; 8, D. robustus sp. nov.; 9, D. sanliurfensis sp. nov.; 10, D. teunisseni sp. nov.; 11, D. turcicus sp. nov.; 12, D. iranicus Wittmer, 1967. Scale bars = 2.0 mm.

FIGURES 13 – 21. Pronota of Drilus species. 13, Drilus badius sp. nov.; 14, D. huijbregtsi sp. nov.; 15, D. latithorax Pic, 1902; 16, D. mertliki sp. nov.; 17, D. obscuricornis Pic, 1899; 18, D. robustus sp. nov.; 19, D. sanliurfensis sp. nov.; 20, D. teunisseni sp. nov.; 21, D. turcicus sp. nov. Scale bars = 0.5 mm.

FIGURES 22 – 33. Antennae of Drilus species. 22, Drilus badius sp. nov.; 23, D. huijbregtsi sp. nov.; 24, D. latithorax Pic, 1902; 25, D. mertliki sp. nov.; 26, D. obscuricornis Pic, 1899; 27, D. rectus Schaufuss, 1867; 28, D. robustus sp. nov.; 29, D. sanliurfensis sp. nov.; 30, D. teunisseni sp. nov.; 31, D. turcicus sp. nov. Drilus robustus sp. nov., male. 32, leg; 33, last abdominal segments. Scale bars = 0.5 mm.

FIGURES 34 – 45. Male genitalia of Drilus species. 34, Drilus badius sp. nov.; 35, D. huijbregtsi sp. nov.; 36, D. latithorax Pic, 1902; 37, D. mertliki sp. nov.; 38, D. obscuricornis Pic, 1899; 39, D. rectus Schaufuss, 1867 (Turkey, Adana Prov.); 40, D. robustus sp. nov.; 41, D. sanliurfensis sp. nov.; 42, D. teunisseni sp. nov.; 43, D. turcicus sp. nov.; 44, D. iranicus Wittmer, 1967; 45, Drilus sp. (Abkhazia). Scale bars = 0.25 mm.