Ochthephilus filum ( Fauvel, 1875 )

Makranczy, György, 2014, Revision of the genus Ochthephilus Mulsant & Rey, 1856 (Coleoptera: Staphylinidae, Oxytelinae), Revue suisse de Zoologie 121 (4), pp. 457-694 : 496-500

Ochthephilus filum ( Fauvel, 1875) Figs 6, 24-25, 59-63, 66-67, 86, 112-113, 517

Ancyrophorus filum Fauvel, 1875 a : ix [=1875b: 211]. – Ganglbauer, 1895: 670. – Fagel, 1951b:

1, 3.

Ochthephilus filum (Erichson) . – Herman, 1970: 384. – Herman, 2001: 1721.

TYPE MATERIAL EXAMINED: LECTOTYPE (♀): “[ PORTUGAL:] Coimbra; inond-ons [*+40.20/-08.42*]. 3[=III] \ filum; Fauv. \ Type [curator label] \ G. Fagel det., 1957; Ancyrophorus ; filum; (Fauvel) Fagel \ Lectotypus; Ancyrophorus ; filum Fauvel \ Ochthephilus ; filum Fauvel ; det. Makranczy, 1999” ( ISNB).

OTHER MATERIAL: PORTUGAL: Porto *+41.11/-08.54*, coll. Fauvel, ISNB (1) . — SPAIN: Madrid *+40.40/-03.68*, MNMS (1). – [ Sierra de Guadarrama ,] [El] Escorial *+40.59 /-

FIGS 96-110

(96-100) Ochthephilussericinus (Solsky); aedeagus (96), innersclerites (97-98), femaleringstructures (99-100). (101-105) O. tibetanus sp. n.; aedeagus (101), innersclerites (102-103), femaleringstructures (104-105). (106-110) O. aureus (Fauvel) ; aedeagus (106), innersclerites (107-108), femaleringstructures (109-110). Scalebar = 0.05 mmfor 99-100, 0.06 mmfor 104-105, 0.09 mmfor 96-98, 0.1 mmfor 101-103, 106-110.

04.15*, coll. Jarrige, MNHP (13, 2). – Candeleda, inondations du fleuve [Rio] Tiétar *+40.16/- 05.24*, IV.1934 , leg. Dr. J. Baum, coll. Roubal, SNMC (1), coll. Smetana, CNCI (13), MHNG (1) .

REDESCRIPTION: Forebody as in Fig. 517. Measurements (n=10): HW = 0.38 (0.37-0.40); TW = 0.38 (0.36-0.39); PW = 0.38 (0.36-0.40); SW = 0.44 (0.41-0.46); AW = 0.48 (0.42-0.52); HL = 0.34 (0.31-0.36); EL = 0.11 (0.10-0.12); TL = 0.125 (0.12-0.13); PL = 0.34 (0.31-0.36); SL = 0.61 (0.57-0.63); SC = 0.56 (0.53-0.58); FB = 1.34 (1.30-1.39); BL = 2.31 (2.15-2.49) mm. Head dark brown with reddish tint. Pronotum the same but occasionally a little lighter, while abdomen varies from blackish brown to more reddish medium to dark brown. Elytra lighter medium brown except scutellar area to shoulders sometimes darker, slightly blackish. Legs, mouthparts and antennae reddish medium brown. Body with moderate lustre in spite of light body colour, only elytra shinier. Pubescence medium dense and uniformly short (regularly spaced) on elytra, longer but finer on head and pronotum, only abdomen with conspicuous and longer setae; a few particularly strong and long setae near pronotal sides and inner anterior corners of eyes. Elytral apex without conspicuous setae. Last tarsomere with a few setae only.

Forebody. Antenna as in Fig. 113, antennomere 7 (and in lesser extent article 8) asymmetrically swollen on one side. Clypeus (Fig. 66) almost impunctate (colliculate microsculptured), trapezoid, corners rounded, anterior edge gently arched; separated by black transversal line (frontoclypeal suture) across a shinier area. Supraantennal prominences well developed, feebly separated from clypeus/vertex by impressions. Vertex with oblique impressions in middle almost joining in V-shape. Temples (Fig. 112) not evenly curved, almost straight anteriorly, strongly curved posteriorly, significantly longer than eye length. Neck separated by a shallowly 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' partially formed, apart from longitudinal midline two roundish, elevated (shinier) areas near posterior margin and two similar ones on both sides of midline in anterior half of disc; basal arms barely visible. Elytra (Fig. 67) slightly broadening posteriorly, sutural corners narrowly rounded; apical sides more or less straight. 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 (Fig. 86) basal edge evenly arched, but straight at a short distance in middle of basal sclerotized band; apical edge with sinuate (protruding) corners, and broad, moderately deep emargination in between. Sternite

FIGS 111-124

(111) Ochthephilusaurorans (Peyerimhoff); antenna. (112-113) O. filum (Fauvel) ; sideofhead (112), antenna (113). (114-117) O. japonicus (Watanabe & Shibata) ; sideofhead (114), hindleg, 3 (115), antenna (116), antennomeres 6-8 (117). (118-119) O. davidi sp. n.; sideofhead (118), antenna (119). (120-121) O. tibetanus sp. n.; sideofhead (120), antenna (121). (122-124) O. sericinus (Solsky) , antenna (122), middleofneck (123), protarsus (124). AllSEM, dorsal views. Scale bar = 0.15 mm for 112, 0.20 mm for 118, 120, 0.22 mm for 114, 123, 0.27 mm for 113, 117, 124, 0.38 mm for 111, 115, 0.45 mm for 121, 0.5 mm for 119, 0.6 mm for 116, 122.

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 unmodified, apex very slightly wider in males than in females. Aedeagus as in Fig. 59, inner sclerites as in Figs 60-61. Female ringstructures as in Figs 62-63.

COMPARATIVE NOTES: This is the smallest species in this group and therefore cannot be confused with the other two group members, but mostly those of the (similarly sized) aurorans group, however, it lacks their peculiar formation of the tergite VIII apex and the modified palisade fringe of tergite VII.

NOTE: This taxon was described by Fauvel (1875) with clear statement that the type locality is Coimbra, Portugal. Description also contains reference to another specimen, which was sent by Dr. Skalitzky (collector from Bohemia); Fagel (1951) redescribed the species, stated that the other specimen in the description belonged to another species which he described as new in the same paper. He treats the only available specimen of O. filum from the type locality as “ holotype ” (and thereby designates a lectotype, ICZN, edn. 2000, Art. 74.5) and some other conspecific exemplars from the Fauvel collection as “ Paratypes ”; however, the latter specimens (from Porto and Madrid, respectively) are not syntypes .

DISTRIBUTION: The species is so far known only from Portugal and Spain.

BIONOMICS: Only a few old specimens of this species are known (last encountered in 1934!) with no detailed record of its habits. Some of these riverbanks may still be in decent condition, therefore its lack of newer records may be due to lack of attention and unsuitable collecting methods. Appropriate techniques could still find it, although it is unlikely to be common.

III. Ochthephilus emarginatus species group