Ochthephilus emarginatus ( Fauvel, 1871 )

Makranczy, György, 2014, Revision of the genus Ochthephilus Mulsant & Rey, 1856 (Coleoptera: Staphylinidae, Oxytelinae), Revue suisse de Zoologie 121 (4), pp. 457-694 : 504-514

Ochthephilus emarginatus ( Fauvel, 1871) Figs 7, 74-78, 127-128, 519, 589

Ancyrophorus emarginatus Fauvel, 1871: 167 [=1872: 141]. – Ganglbauer, 1895: 667. – Jarrige, 1949: 59. – Fagel, 1951a: 1. – Smetana, 1967: 307.

Ochthephilus emarginatus (Fauvel) . – Herman, 1970: 384. – Gildenkov, 2000a: 1187. – Gildenkov, 2000b: 849. – Makranczy, 2001: 178.

TYPE MATERIAL EXAMINED: Ancyrophorus emarginatus – LECTOTYPE (here designated): “ Arnedillo ; Espagne \ Digne ; bords de la Bléone; aoul [duplicate locality label, considered false] \ Rosenhaueri Kiesw. [printed, probably curator label] \ Type \ G. Fagel det., 195.; emarginatus Fauv. \ Lectotypus; Ancyrophorus ; emarginatus Fauvel ; [on the back] des. Makranczy, 1999 \ Ochthephilus ; emarginatus Fauvel ; det. Makranczy, 1999” ( ISNB). – PARALECTOTYPE (1): “Arnedillo \ Fauvel (dark greenish disc) \ 5028 (white disc) \ P. de Borre. \ Paralectotypus; Ancyrophorus ; emarginatus Fauvel ; [on the back] des. Makranczy, 1999 / Ochthephilus ; emarginatus Fauvel ; det. Makranczy, 1999” ( MHNG, 1) .

OTHER MATERIAL: see Appendix.

REDESCRIPTION: Forebody as in Fig. 519. Measurements (n=10): HW = 0.69 (0.66-0.73); TW = 0.61 (0.58-0.65); PW = 0.77 (0.73-0.83); SW = 1.03 (0.96-1.11); AW = 1.07 (0.97-1.20); HL = 0.52 (0.48-0.55); EL = 0.24 (0.23-0.26); TL = 0.10 (0.09- 0.11); PL = 0.61 (0.57-0.63); SL = 1.20 (1.16-1.25); SC = 1.09 (1.04-1.14); FB = 2.40 (2.30-2.56); BL = 4.37 (3.96-4.76) mm. Head, pronotum and abdomen blackish dark brown, occasionally with reddish tint, especially on pronotum around its margins. Elytra somewhat reddish-yellowish medium brown, sometimes only middle of disc and darker around, forming an oblique lighter spot on elytra with darker edges, scutellar area to shoulders blackish, as well as broadly around outer posterior corners and apical margin. Legs, mouthparts and antennae reddish medium to dark brown, apex of antenna often lighter. Body with moderate lustre due to very dense elytral setation and fine but dense punctation all over. Pubescence medium short and medium dense, much shorter and more dense on elytra, longer and much sparser on abdomen. Elytral apex without conspicuous setae. Tarsi rather densely (and finely) setose.

Forebody. Antenna as in Fig. 589, antennomere 7 (and in lesser extent article 8) asymmetrically swollen on one side. Clypeus finely and sparsely punctate (colliculate microsculptured), trapezoid, corners rounded, anterior edge gently arched; separated by impressed transversal line (frontoclypeal suture) across a shinier area. Supraantennal prominences well developed, feebly separated from clypeus/vertex by impressions. Vertex with a pair of very shallow impressions in middle. Temples slightly bulging, evenly curved, little shorter than half of eye length. Neck separated by an impressed transversal groove, microsculpture much stronger than on head, with transverse cells, no setation. Pronotum with a narrow marginal bead, visible to anterior pro-

FIGS 145-148

(145-146) Ochthephilus sericinus (Solsky) ; head and pronotum (145), elytra (146). (147-148) O. japonicus (Watanabe & Shibata) ; head and pronotum (147), elytra (148). All SEM, dorsal views. Scale bar = 0.06 mm for 84, 0.1 mm for 82, 83, 0.16 mm for 87, 0.25 mm for 85-86.

notal corners. Posterior pronotal angles well-formed, just slightly obtuse-angled, sides in posterior 2/3 almost straight. 'Anchor' weakly formed, more apparent in longitudinal midline as an elevated, impunctate, unsculptured (shinier) line, other parts barely discernible. Elytra slightly broadening posteriorly, sutural corners broadly rounded; apical sides slightly oblique and in inner halves gently convex. Elytral surface rather even with two shallow, very elongate impressions behind scutellum. Head with fine coriaceous/colliculate microsculpture, fading on elevated parts, stronger in impressions, on pronotum microsculpture slightly stronger and more even. Punctation on head sparse, mostly confined to posterior part and sides, on pronotum more evenly spaced, average interspaces much larger than puncture diameters; elytral punctation more even and regularly spaced, average interspaces (with indistinct coriaceous microsculpture) about as puncture diameters, punctures discrete.

Abdomen. Compared to forebody, abdomen with much more sparse, finer, less distinct punctation, microsculpture on tergal apices fine coriaceous with moderately transverse cells. Tergite VII posterior margin with palisade fringe unmodified in middle (nearly uniform breadth). Tergite VIII basal edge evenly arched, with small concavity in middle of basal sclerotized band; apical edge with sinuate (protruding) corners, and broad, moderately deep emargination in between. Sternite VIII with rounded apical corners, apex in males shallowly concave laterally, gently sinuate in middle; in females slightly more sinuate (convex) in middle. Tergite X modified, apex with just a couple, but rather deep emarginations, broader in males (Fig. 127), more narrow in females (Fig. 128). Aedeagus as in Fig. 74, inner sclerites as in Figs 75-76. Female ringstructures as in Figs 77-78.

COMPARATIVE NOTES: Rather similar to O. sericinus , the two both have partly lighter, reddish elytra, but the antennae of O. sericinus are shorter. O. emarginatus is the largest species of the genus within its distribution range.

DISTRIBUTION: The species is known from the whole Mediterranean Basin (North Africa and in Europe mostly along the coastline, rarely goes much north from it) through Turkey and the Caucasus to Iran and Afghanistan.

BIONOMICS: Specimens were collected near river, on riverbank, under stones, flood debris, at waterfall from wet moss or sifted from wet leaflitter under waterfall, sifted from moss, also captured at light.

Ochthephilus japonicus ( Watanabe & Shibata, 1961) Figs 79-83, 114-117, 125-126, 147-148, 521

Ancyrophorus japonicus Watanabe & Shibata, 1961: 6 .

Ochthephilus japonicus (Watanabe & Shibata) . – Herman, 1970: 384.

TYPE MATERIAL EXAMINED: Ancyrophorus japonicus – HOLOTYPE (♀): “( Mt. Ooyama ) [*+35.44/+139.23*]; Kanagawa; May 5th 1960; Y.Shibata Leg \ {Holotype}; Ancyrophorus ; japonicus; Y.Watanabe; et Y.Shibata, 1961” (coll. Watanabe).

OTHER MATERIAL: JAPAN: Tokyo, Okutama-gun, Mitake *+35.80/+139.18*, 29.IV.1937, leg. Y. Yano, coll. Cameron, BMNH (1) . – Kyoto pref., Mt. Daihi *+35.24/+135.80*, 30.IV.1987, leg. T. Ito, coll. Ito (1) . – Yamato [Nara pref.], Dorogawa *+34.27/+135.88*, 2.V.1976, leg. T. Ito, coll. Ito (1) . – Hyogo pref., Akazai[-keikoku]

FIGS 149-153

TergitesX; Ochthephilussericinus ( Solsky ), ♀ (149) , O. davidi sp. n., 3 (150), same, ♀ (151), O. tibetanus sp. n., 3 (152), same, ♀ (153). Scale bar = 0.1 mm for 150-153, 0.115 mm for 149. *+35.22/+134.48*, 5.V.1981, leg. T. Ito, coll. Ito (13) , HNHM (13), NHMW (13). – Kii [Wakayama pref.], Mt. Koya *+34.22/+135.57*, 2.V.1968, leg. T. Ito, coll. Ito (1♀) , MHNG (1). – Kyoto pref., Kibune *+35.12/+135.78*, 29.IV.1960, leg. K. Ueda, coll. Ito (13) , HNHM (1♀) .

REDESCRIPTION: Forebody as in Fig. 521. Measurements (n=10): HW = 0.71 (0.69-0.74); TW = 0.64 (0.61-0.67); PW = 0.76 (0.74-0.81); SW = 1.03 (0.98-1.12); AW = 1.11 (1.04-1.16); HL = 0.53 (0.52-0.56); EL = 0.23 (0.22-0.24); TL = 0.13 (0.12- 0.14); PL = 0.65 (0.62-0.71); SL = 1.23 (1.18-1.30); SC = 1.10 (1.04-1.16); FB = 2.48 (2.38-2.66); BL = 4.44 (4.02-4.70) mm. Head, pronotum and abdomen slightly reddish dark brown, elytra often the same but occasionally lighter, more reddish. Legs, mouthparts and antennae reddish dark brown, mid-tibiae and femora darker in case of sometimes lighter legs. Body with moderate lustre due to very dense elytral setation and fine but dense punctation all over. Pubescence medium short and medium dense, much shorter and more dense on elytra, longer and much sparser on abdomen. Elytral apex with a few larger setae near sutural corners. Last tarsomere moderately setose (Fig. 115).

Forebody. Antenna as in Fig. 116, antennomere 7 (and in lesser extent article 8) asymmetrically swollen (Fig. 117) on one side. Clypeus (Fig. 147) shallowly and sparsely punctate (colliculate microsculptured), trapezoid, corners rounded, anterior edge gently arched; separated by impressed transversal line (frontoclypeal suture) across a shinier area. Supraantennal prominences well developed, feebly separated from clypeus/vertex by impressions. Vertex with feeble, oblique impressions in middle almost joining in V-shape. Temples (Fig. 114) slightly bulging, evenly curved, little longer than half of eye length. Neck separated by an impressed transversal groove, microsculpture much stronger than on head, with transverse cells, no setation. Pronotum with a narrow marginal bead, visible to anterior pronotal corners. Posterior pronotal angles well-formed, just slightly obtuse-angled, sides in posterior 2/3 almost straight. 'Anchor' rather weakly formed, more apparent in longitudinal midline as an elevated, impunctate, unsculptured (shinier) line, parallel to this line two gentle, semi-longitudinal elongate elevations in anterior half of disc. In the corners of the anchor slight elongate impressions directed outwards. Elytra (Fig. 148) slightly broadening posteriorly, sutural corners broadly rounded; apical sides slightly oblique and in inner halves gently convex. Elytral surface rather even with two shallow, very elongate impressions behind scutellum. Head with fine coriaceous/colliculate microsculpture, fading on elevated parts, stronger in impressions, on pronotum microsculpture slightly stronger and more even. Punctation on head sparse, mostly confined to posterior part and sides, on pronotum more evenly spaced, average interspaces much larger than puncture diameters; elytral punctation more even and regularly spaced, average interspaces (with indistinct coriaceous microsculpture) about as puncture diameters, punctures discrete.

Abdomen. Compared to forebody, abdomen with much more sparse, finer, less distinct punctation, microsculpture on tergal apices fine coriaceous with moderately transverse cells. Tergite VII posterior margin with palisade fringe unmodified in middle (nearly uniform breadth). Tergite VIII basal edge evenly arched, with small concavity in middle of basal sclerotized band; apical edge with sinuate (protruding) corners, and broad, moderately deep emargination in between. Sternite VIII with rounded apical corners, apex in males shallowly concave laterally, gently sinuate in

FIGS 154-168

(154-158) Ochthephilusbiimpressus (Mäklin); aedeagus (154), innersclerites (155-156), female ringstructures (157-158). (159-163) O. solodovnikovi Gildenkov ; aedeagus (159), innersclerites (160-161), femaleringstructures (162-163). (164-168) O. lenkoranus (Scheerpeltz) ; aedeagus (164), innersclerites (165-166), femaleringstructures (167-168). Scalebar = 0.07 mmfor 157-158, 0.075 mmfor 162-163, 0.09 mmfor 167-168, 0.1 mmfor 154-156, 164-166, 0.135 mm for 159-161.

middle; in females slightly more sinuate (convex) in middle. Tergite X not conspicuously modified, apex broader in males (Fig. 125) more narrow in females (Fig. 126). Aedeagus as in Fig. 79, inner sclerites as in Figs 80-81. Female ringstructures as in Figs 82-83.

COMPARATIVE NOTES: O. japonicus is quite an outlier in the O. emarginatus group, for its less emarginate apex of tergite X and mainly for features in the legs: the less hairy last tarsomere, the row of tubercles on the inner side of metatibia and the tuberculate base of metafemur. The latter feature (Fig. 115, with arrow to the tubercle) is expressed with various strength throughout males of both the O. angustatus and O. emarginatus groups, very often this tubercle is barely noticeable. A similar modification exists in males of Thinobius procerus Eppelsheim, 1893, where a spine is formed in the middle of the hind edge of metafemur ( Makranczy, 2014, Fig. 10).

DISTRIBUTION: The species is so far known only from Japan.

BIONOMICS: No bionomical details are recorded with any of the known specimens, but localities indicate they were collected at streambanks, possibly from wet moss.

Ochthephilus sericinus ( Solsky, 1874) Figs 96-100, 122-124, 129, 145-146, 149, 520 Ancyrophorus sericinus Solsky, 1874: 206 . – Scheerpeltz, 1950: 56.

Ochthephilus sericinus (Solsky) . – Herman, 1970: 385.

Psilotrichus elegans Luze, 1904: 70 , syn. nov.

Ancyrophorus (Misancyrus) kerzhneri Kashcheev, 1989: 279 , syn. nov.

Ancyrophorus (Misancyrus) gvosdevi Kashcheev, 1999: 150 , syn. nov.

TYPE MATERIAL EXAMINED: Ancyrophorus sericinus – HOLOTYPE: “1. \ к. Сольскаго \ Turkestan, Kokand [*+40.53/+70.94*], 2.VII.1871, leg. Fedtschenko \ Holotypus; Ancyrophorus ; sericinus Solsky \ Ochthephilus ; sericinus Solsky ; det. Makranczy, 1999” ( ZISP) . Psilotrichus elegans – HOLOTYPE: “Seravschan [Зеравшан range], Fl. Magian [Магиан river] [*+39.29/+67.83*], 1892, leg. Glasunov ” ( NHMW) . Ancyrophorus kerzhneri – HOLOTYPE: “ Монголия, Баян-Хонгорский аймак, река Байдраг-Гол, 30км С Ба-Цагана [*+45.75/+99.38*], 10.VII.1970 (Кержнер leg.)” ( ZISP) . – PARATYPE (1): “ Монголия, Южно- Гобийский аймак, хребет Гурван-Сайхан, 40км З Далан-Дзадагад [*+43.50/+104.00*], 28.VIII.1969 (Гурьева leg.)” ( ZISP) . Ancyrophorus gvosdevi – HOLOTYPE (3): “[Джунгарский Алатау, р.] Борохудзир [*+44.50/+79.50*], 31.VIII.1988 [leg.] В. Кащеев” ( ZISP) . – PARATYPE (1): same data as holotype ( ZISP, 1♀) .

OTHER MATERIAL: see Appendix.

REDESCRIPTION: Forebody as in Fig. 520. Measurements (n=10): HW = 0.64 (0.60-0.69); TW = 0.57 (0.53-0.62); PW = 0.70 (0.65-0.75); SW = 0.91 (0.81-1.00); AW = 1.02 (0.92-1.10); HL = 0.50 (0.46-0.53); EL = 0.24 (0.23-0.26); TL = 0.09 (0.7-0.10); PL = 0.55 (0.51-0.60); SL = 1.10 (1.00-1.22); SC = 1.01 (0.93-1.14); FB = 2.24 (2.04-2.49); BL = 3.95 (3.57-4.44) mm. Head, pronotum and elytra blackish dark brown with reddish tint. Elytra dark brown, blackish around scutellum to shoulders, but in the middle of disc with a lighter spot, usually not as extensive and not as light as in case of O. emarginatus ; if middle lighter a broad stripe at apex remaining dark, blackish as well as around scutellum and shoulders. Legs, mouthparts and antennae reddish medium to dark brown, basal antennomeres often somewhat lighter. Body with moderate lustre due to very dense elytral setation and fine but dense punctation all over. Pubescence medium short and medium dense, much shorter and more dense on FIGS 169-172

(169-170) Ochthephilus davidi sp. n.; head and pronotum (169), elytra (170). (171-172) O. tibetanus sp. n.; head and pronotum (171), elytra (172). All SEM, dorsal views. Scale bar = 0.42 mm for 169, 171, 0.5 mm for 170, 172.

elytra, longer and much sparser on abdomen. Elytral apex without conspicuous setae. Last tarsomere rather densely (and finely) setose (Fig. 124).

Forebody. Antenna as in Fig. 122, antennomere 7 (and in lesser extent article 8) asymmetrically swollen on one side. Clypeus (Fig. 145) finely and sparsely punctate (colliculate microsculptured), trapezoid, corners rounded, anterior edge gently arched; separated by impressed transversal line (frontoclypeal suture) across a shinier area. Supraantennal prominences well developed, feebly separated from clypeus/vertex by impressions. Vertex with a pair of very shallow impressions in middle. Temples slightly bulging, evenly curved, little shorter than half of eye length. Neck separated by an impressed transversal groove, microsculpture much stronger than on head, with transverse cells, setose in midline (Fig. 123). Pronotum with a narrow marginal bead, visible to anterior pronotal corners. Posterior pronotal angles well-formed, just slightly obtuse-angled, sides in posterior 2/3 almost straight. 'Anchor' weakly formed, more apparent in longitudinal midline as an elevated, impunctate, unsculptured (shinier) line, other parts barely discernible. Elytra (Fig. 146) slightly broadening posteriorly, sutural corners broadly rounded; apical sides slightly oblique and in inner halves gently convex. Elytral surface rather even with two shallow, very elongate impressions behind scutellum. Head with fine coriaceous/colliculate microsculpture, fading on elevated parts, stronger in impressions, on pronotum microsculpture slightly stronger and more even. Punctation on head fine, sparse, mostly confined to posterior part and sides, on pronotum more evenly spaced, average interspaces much larger than puncture diameters; elytral punctation more even and regularly spaced, average interspaces (with indistinct coriaceous microsculpture) about as puncture diameters, punctures discrete.

Abdomen. Compared to forebody, abdomen with much more sparse, finer, less distinct punctation, microsculpture on tergal apices fine coriaceous with moderately transverse cells. Tergite VII posterior margin with palisade fringe unmodified in middle (nearly uniform breadth). Tergite VIII basal edge evenly arched, with small concavity in middle of basal sclerotized band; apical edge with sinuate (protruding) corners, and broad, moderately deep emargination in between. Sternite VIII with rounded apical corners, apex in males shallowly concave laterally, gently sinuate in middle; in females slightly more sinuate (convex) in middle. Tergite X modified, apex with quite a few, but moderately deep emarginations, broader in males (Fig. 129) more narrow in females (Fig. 149). Aedeagus as in Fig. 96, inner sclerites as in Figs 97-98. Female ringstructures as in Figs 99-100.

COMPARATIVE NOTES: This species is related to the similarly coloured O. emarginatus , but with much shorter antenna and somewhat smaller body size. It can be easily separated from all other congeners by the setose last tarsomere and densely setose body. It is unknown whether the distribution range approaches to or overlaps with that of O. tibetanus , but the latter species has much more slender body with more elongate (and uniformly dark) elytra.

NOTES: According to the original description the length of the body is 3.5 mm, elytra is 1.2 mm long and 1.0 mm wide. The main evidence of Solsky’s specimen being the holotype is Solsky’s original box (seen and photographed by me), which had only one pinhole under the name “ Ancyrophorus ”. The specimen has long been removed FIGS 173-178

TergitesVIII; Ochthephilusaureus (Fauvel) (173), O. californicus sp. n. (174), O. solodovnikovi Gildenkov , 3 (175), same, ♀ (176), O. lenkoranus (Scheerpeltz) , 3 (177), same, ♀ (178). Scale bar = 0.1 mm for 174, 0.115 mm for 177-178, 0.13 mm for 173, 175-176.

from this box) has only a yellow label with horizontal red line in the middle and printing: “1.” plus a Solsky collection label attached by a later curator. Another supporting fact is that this is an unusually small specimen of this species, and comes reasonably close to the measurements given in the original description.

DISTRIBUTION: Known from Transcaucasia through Central Asia (including Afghanistan) to the northwestern areas of China. In Central Asia it is quite common and dominant species of this genus.

BIONOMICS: Specimens were collected near river, under stones.