Platyderus (Eremoderus) brunki, Guéorguiev & Wrase & Assmann & Muilwijk & Machard, 2022

Gueorguiev, Borislav, Wrase, David W., Assmann, Thorsten, Muilwijk, Jan & Machard, Patrice, 2022, Taxonomic revision of the African and Southwest Asian species of Platyderus Stephens, subg. Eremoderus Jeanne (Coleoptera, Carabidae, Sphodrini), Deutsche Entomologische Zeitschrift 69 (1), pp. 71-122 : 71

14. Platyderus (Eremoderus) brunki sp. nov.

Figs 3C , 14F , 19

Type locality.

Yemen, 'Amran Governorate, Thula District, between Kaukaban and Shibam, approximate GPS coordinates: 15.503, 43.901.

Type material.

Holotype ♀, 'YEMEN, ~ 40 km NW Sanaa, / Kaukaban/Shibam, small waste- / waterstream, ruralic vegetation, / sand, 2700-2930 m Handaufsam. / 15°30'9.98"N, 43°54'2.66"E / 02. Dez. 2009, legit. Ingo Brunk [p, w] // Coll. / I. Brunk / Dresden/Germ [h, pn]' (cBRU).

Other material examined.

Remains of a specimen of uncertain sex in bad condition (only pronotum and elytra preserved), 'UNDER A STONE // YEMEN / El Errein, nr. Haz , / about 16 miles N.W. / of San’a, ca. 9,300ft. [= 2835 m] / 3.ii.1938.// B.M. Exp. to / S.W. Arabia. / H. Scott & / E.B. Britton. / B.M. 1938-246, // Platyderus / Platyderus Eremoderus languidus / Reiche / E.B. Britton det. / 1946' (NHMUK) .

TME: 2 specimens. TGE: 1♀.

Etymology.

Latinized patronym based on the surname of Ingo Brunk (Dresden, Germany), who collected the first well-preserved representative of the new species.

Diagnosis.

Platyderus brunki sp. nov. readily differs from all other Eremoderus -taxa in its smallest value in ratio PW/PL (Table 3 ). It is most closely related to P. arabicus ; both species are the only two within " Platyderus Eremoderus languidus " group with darkest coloration of integument and sides of pronotum not sinuate from widest point to base ( P. irakensis has also sides of pronotum not sinuate to base, but much lighter coloration of integument and higher value in ratio EL/PL). The new species is distinct from P. arabicus sp. nov., in: (1) pronotum with anterior angles more rounded at tips (vs. pronotum with anterior angles more pointed at tips, Fig. 3B, C ); (2) pronotum nearly as long as wide, PW/PL: 1.02-1.05 (vs. pronotum appreciably wider than long, PW/PL: 1.07-1.11); (3) pronotum subcordate, less constricted anteriorly, PW/PA: 1.38-1.42, with greater value in ratio PA/PB: 0.80-0.88 (vs. pronotum subquadrate, more constricted anteriorly, PW/PA: 1.44-1.48, with smaller value in ratio PA/PB: 0.76-0.79); (4) elytra compared to pronotum slightly shorter, EL/PL: 2.40-2.44 (vs. elytra compared to pronotum slightly longer, EL/PL: 2.47-2.56). Females are different from all other representatives of the " Platyderus Eremoderus languidus " group by the presence of two, instead of one, dorsolateral ensiform setae on the apical gonocoxite (Fig. 14F ).

Description.

Habitus. Specimens of large size for Platyderus species (BL of holotype: 9.50 mm; BW: 3.30 mm), with elongate, moderately convex body (Fig. 3C ). Measurements and ratios. See Table 3 . Color and lustre. Body and appendages uniformly reddish-brown, with palpi and antennae slightly lighter. Integument slightly to moderately shiny, head and pronotum shinier than elytra. Microsculpture and punctation. Microreticulation of pronotum and elytra as in P. arabicus sp. nov. Ventral surface largely with well-impressed isodiametric or slight transverse sculpticells, epipleura, mesosternum and middle coxa with sculpticells less apparent. Head (holotype) nearly smooth, impunctate, wrinkles present only on clypeus and frons, including frontal foveae and area surrounding them. Pronotum surface largely smooth, only apical part medially in front of anterior transverse impression and basal area medially behind posterior transverse impression longitudinally wrinkled, as well as each side along lateral margin with a few shallow punctures not reaching anterior half. Elytral intervals without apparent punctation. Abdominal ventrites nearly smooth, impunctate, 3-5 with a few fine wrinkles at sides. Head (holotype). About two-thirds as wide as pronotum (PW/HW of holotype: 1.36). Eyes long, slightly convex. Labrum subrectangular, as long as clypeus, with anterior margin concave. Frontoclypeal suture distinct in middle, indistinct at sides. Frontal furrows shallow, subfoveolate. Paraorbital sulci straight, backward barely reaching posterior margin of eye, not reaching level of posterior supraorbital pore. Thorax. Pronotum almost as wide as long (PW/PL= 1.02-1.05), with widest point at second quarter (holotype) or medial fifth (specimen from "El Errein, nr. Haz"). Anterior and posterior transverse impressions slightly distinct medially, indistinct laterally. Sides not sinuate, smoothly convex anteriorly and medially, straight (specimen from "El Errein, nr. Haz") or convex posteriorly (holotype); anterior bead present laterally, lacking in medial 1/8 to 1/10; basal bead present laterally, reduced to absent in medial half; posterior angles rounded (holotype) or obtuse (specimen from "El Errein, nr. Haz"). Metepisternum as long as wide, MA/MI= 1.00. Elytra. Elongate, about one and a half times as long as elytra (EL/EW= 1.58-1.59), two and a half times as long as pronotum (EL/PL= 2.40-2.44), and a one and half as wide as pronotum (EW/PW= 1.48), with widest point at medial third. Parascutellar striole scarcely distinct, very shallow; striae more impressed than striole, barely punctate; parascutellar striole not joining stria 1; striae 1-5 and sometimes 6 reaching basal bead, 7 ending little before. Interval 3 with three discal setiferous punctures, medial one larger than others, in midst of interval 3 (holotype) or near stria 2 (specimen from "El Errein, nr. Haz"), anterior and posterior punctures smaller, adjoining stria 3 (posterior puncture lacking on right elytron of holotype). Umbilicate setiferous series with 16 or 17 punctures of each elytron. Legs. Posterior side of profemur with one seta in basal third and one in medial third. Left mesofemur with 5, right one with 4 setiferous punctures on anterior side ventrally. Anterior side of metafemur ventrally with two long setae, one in basal third and one in medial third. Male genitalia. Unknown. Female genitalia (Fig. 14F ). Apical gonocoxite with pointed apex and two dorsolateral ensiform setae. Spermathecal canal connected in medial third of receptaculum.

Habitat.

The holotype was collected by sifting the waste-water vegetation and soil at a humid place where waste water falls down (Ingo Brunk, pers. comm.). The correct altitude of the type locality is ca. 2700 m a. s. l. The locality is situated approximately half-way on a very steep walking path starting from Kawkaban (town on the top of the Mount Kawkaban) downwards to Schibam Kawkaban (town on the bottom of the mountain). Together with the holotype, numerous specimens of Trechus (Arabotrechus) rougemontiellus Belousov, 2017 and few Bembidion spp. were collected.

Distribution.

Yemen ( Sana’a Governorate), see Fig. 19 .

Figures

Figure 3. Dorsal habitus. A. Platyderus (Eremoderus) afghanistanicus, sp. nov., holotype; B. P. (E.) arabicus, sp. nov., holotype; C. P. (E.) brunki, sp. nov., holotype; D. P. (E.) brunneus brunneus Karsch, 1881, lectotype and its labels; E. P. (E.) brunneus brunneus Karsch, 1881, male specimen, 50 km W of Ben Gardane, Medenine Governorate, Tunisia; F. P. (E.) brunneus ferrantei Reitter, 1909, lectotype and its labels. Scale bars: 1 mm.

Figure 14. Spermathecal complex and gonocoxites, ventral view. A. Platyderus (Eremoderus) lassallei, sp. nov., female paratype, Iran, Mazandaran Province, E Qolqol; B. P. (E.) ledouxi Morvan, 1974, female specimen, 10 km SW Rudbarak, Mazandaran Province, Iran; C. P. (E.) taghizadehi Morvan, 1974, female specimen, Alburz Dizin, Tehran Province, Iran; D. P. (Platyderus) umbratus (Menetries), female specimen, Iran, Kohgiluyeh va Boyer-Ahmad Province, Sisakht; E. P. (E.) arabicus, sp. nov., holotype; F. P. (E.) brunki, sp. nov., holotype. Scale bars: 0.5 mm. For abbreviations see captions on Fig. 13.

Figure 19. Distribution of species from subgenus Platyderus Eremoderus in the Levant and the Arabian Peninsula: Platyderus arabicus sp. nov. (yellow question marks), P. brunki sp. nov. (blue circle), P. irakensis sp. nov. (green circles), P. jordanensis sp. nov. (brown circles), and P. languidus (red circles).