Deinopteroloma rougemonti Smetana & Shavrin

Smetana, Aleš, 2016, Nine new species of the genus Deinopteroloma Jansson, 1946 (Coleoptera: Staphylinidae: Omaliinae: Anthophagini) from China and Vietnam, Zootaxa 4196 (2), pp. 221-249 : 241-242

Deinopteroloma rougemonti Smetana & Shavrin , sp.n.

( Figs. 4 , 13, 19, 32−35, 65)

Type material examined: Holotype Ƌ [immature specimen, slightly damaged: without left apical antennomere and 4−5 protarsomeres, antennomeres 3−11; abdominal tergite VIII, sternite VIII and apical genital segment are glued on the same plate under beetle; plastic plate with aedeagus in Canadian balsam was pinned under the plate with beetle]: “ CHINA Yunnan \ Ruili \ 4.II.1993 \ G. de Rougemont ” [rectangular printed label], “ HOLOTYPE \ Deinopteroloma \ rougemonti sp. n. \ Smetana A. & Shavrin A.V. des. 2016” ( NSMT) .

Paratype: 1 Ƌ [abdominal tergite VIII, sternite VIII and genital segment are glued on the same plate under the beetle; specimen without aedeagus]: same data as the holotype, with additional red rectangular printed label: “ PARATYPE \ Deinopteroloma \ rougemonti sp. n. \ Smetana A. & Shavrin A.V. des. 2016” (CR).

Description. Measurements (n=2): HW: 1.01−1.05; HL: 0.55−0.61; OL: 0.27; AL (holotype): 1.88; PL: 0.95−0.98; PW: 1.65−1.75; ElL: 2.46−2.55; EW: 1.85−2.00; AedL: 0.75; TL: 4.75 (holotype)−5.02.

Body (paratype), mouthparts, antennomeres 5−11 and legs reddish brown, head rufotestaceous, lateral sides and apical margin of pronotum, antennomeres 1−4, narrow elytral portion along lateral parts of scutellum and along suture yellowish brown; lateral margins and elytral portion along suture brown; elytral punctures with thin black margins visible at high magnification (holotype yellowish brown). Dorsal surface of body very shiny, without microsculpture except apical part of clypeus with very indistinct irregular rudimentary transverse lines. Head (except clypeus) with irregular punctation denser on infraorbital ridges and between ocelli; disc of pronotum with deep irregular punctation on middle elevation and with somewhat larger punctation on sides; scutellum without punctures; elytra with larger and deeper punctation than that on pronotum, each with more or less distinct longitudinal row closest to suture, other punctation not serrially arranged in rows. Habitus as in Fig. 4 .

Head 1.7−1.8 times as wide as long; clypeus smooth, vertex slightly elevated with posterior wide impression in front of ocelli, infraorbital ridges moderately deep impressed between posteriolateral margins of each eyes and ocellus; eyes large and convex; small obtuse postocular ridge situated close to posterior margin of eye, distance about one fourth of length of eye seen from above; ocelli large, on same level with postocular ridges, distance between ocelli visibly larger than distance between ocellus and posterior margin of eye. Antenna reaching onethird of elytral length when reclined; measurements of antennomeres (length/width, holotype): 1: 0.30 × 0.10; 2: 0.15 × 0.06; 3−4: 0.17 × 0.06; 5−6: 0.17 × 0.07; 7: 0.17 × 0.08; 8−9: 0.13 × 0.09; 10: 0.12 × 0.10; 11: 0.20 × 0.10.

Pronotum transverse, 1.7 times as wide as long, considerably wider than head; apical margin slightly narrower than posterior margin; anterior angles slightly protruding, with acute, small latero-apical tooth, lateral margins coarsely crenulate, more narrowed posteriad than anteriad, with large tooth before middle part; disc of pronotum with irregular middle elevation with two small oval protuberances in anterior portion, two indistinct tubercles slightly before middle and with two large oblique protuberances in posterior portion with deep impression between them; lateral portions of pronotum explanate and distinctly reflexed, each with deep pit at middle.

Elytra very convex, 1.2−1.3 times as wide as long, moderately short, covering first five abdominal tergites; each elytron with large elongated tubercle in basal part below scutellum, with very convex, elongated protuberances after middle on either side of suture, with unequally sized tubercles in latero-basal, middle and apical portions, with more acute pyrmidal tubercles behind shoulders and with a row of four acute tubercles along lateral portion.

Male. Front tibia as in D. bisbisinuatum sp.n. Apical margin of abdominal tergite VIII (Fig. 13) straight. Apical margin of abdominal sternite VIII (Fig. 19) rounded. Aedeagus ( Fig. 32 ) with median lobe gradually narrowed toward subtruncate apex; parameres significantly exceeding apex of aedeagus, narrowed apicad; internal sac ( Fig. 33 ) with two long fields of sclerites consists of numerous thorns. Aedeagus laterally as in Fig. 34 .

Female unknown.

Differential diagnosis. Based on the size and the general shape of the body with very coarsely crenate lateral margins of the pronotum and significantly developed relief of pronotum and elytra with acute pyramidal tubercles and longitudinal ridges, D. rougemonti sp.n. is closely related to Nepalese D. egregium , D. insigne and D. spectabile , but it differs by the paler coloration, as well as by the sclerites of the internal sac and by the external shape of the aedeagus.

Distribution. The new species is known only from the type locality ( Fig. 65 ) in Dehong and Jingpo Autonomous Prefecture in southwestern Yunnan near the border with Myanmar.

Etymology. Patronymic. The species has been named in honour of our colleague staphylinidologist Guillaume de Rougemont (Oxford) who collected the type specimens.

Figures

FIGURES 65. Distribution of Deinopteroloma: D. bisbisinuatum (black circle), D. draco (white circle), D. emeicola (black square), D. minor (white square), D. rougemonti (black triangle), D. ruzickai (white triangle), D. sextuberculatum (black star), D. vesiculosum (white star), D. yinyang (white rhomb). Rectangular are shown in more detail in Fig. 66.

FIGURES 1 – 4. Habitus of Deinopteroloma: 1 — D. bisbisinuatum (holotype), 2 — D. draco (holotype), 3 — D. minor (paratype), 4 — D. rougemonti (paratype). Scale bar: 1.0 mm.

FIGURES 30 – 35. Aedeagus of Deinopteroloma (30, 32 — parameral view, 31, 34 — lateral view) and internal sac (33 — parameral view, 35 — lateral view): 30 − 31: D. minor (paratype), 32 − 35: D. rougemonti (holotype). Scale bar: 0.2 mm.