Parosus longipennis, Makranczy & H-, 2014

Makranczy, György, 2014, Review of the genus Parosus Sharp, 1887 (Coleoptera: Staphylinidae, Oxytelinae), Revue suisse de Zoologie 121 (1), pp. 77-133 : 110-112

Parosus longipennis sp. nov. Figs 23, 30, 37, 82-84, 93, 129

TYPE MATERIAL: HOLOTYPE (3), “ BOLIVIA: Cochabamba [Dept.], Cochabamba, 124 km E Yungas, (Cochabamba – Villa Tunari rd.), 17°3'54"S, 65°38'43"W, 730m, 1-6.Feb.1999, [leg.] R. Hanley ( BOL1 H99 029), ex: flight intercept trap ” ( SEMC). – PARA- TYPES (4), PERU, Cuzco Dept., Consuelo, Manu rd. , km. 165 [13°02'S, 71°30'W], 7.X.1982, leg. L. E. Watrous and G. Mazurek (FMHD #82-349), beating dead branches ( FMNH, 13, MHNG, 1), same but 9-10.X.1982, leg. L. E. Watrous and G. Mazurek (FMHD #82-414), flight intercept trap ( FMNH, 1), same but 12.X.1982, leg. L. E. Watrous and G. Mazurek (FMHD #82-374), ex rotten palm ( FMNH, 1).

DESCRIPTION: Forebody as in Fig. 129. Measurements (n=3): HW = 0.49 (0.46- 0.52); TW = 0.48 (0.44-0.52); PW = 0.44 (0.42-0.47); SW = 0.46 (0.44-0.48); MW = 0.57 (0.52-0.60); AW = 0.50 (0.49-0.51); HL = 0.35 (0.33-0.38); EL = 0.12 (0.115- 0.125); FL = 0.10 (0.10-0.10); TL = 0.12 (0.10-0.14); PL = 0.34 (0.32-0.35); SL = 0.53 (0.50-0.55); SC = 0.51 (0.48-0.53); FB = 1.29 (1.22-1.35); BL = 2.46 (2.32-2.57) mm. Body 'bicoloured'. Head dark brown (only supraantennal prominences appear lighter), pronotum yellowish light brown, elytra medium to dark brown except a semi-triangular part at shoulders (from scutellum to 2/5 of outer edge) being yellow to light brown, with apex appearing darker, abdomen light brown (except terminal segments a tiny bit darker). Legs, mouthparts and antennae yellow to light brown. Pubescence rather sparse and rather short, except abdomen, where longer.

Head and pronotum. Mid-antennal articles moderately elongate (antennomere 6 length:width = 0.045: 0.040 mm). Clypeus (Fig. 82) basally broad trapezoid, ratio of longitudinal distance of supraantennal prominence tip from eyefront to the same from clypeal front = 0.42-0.50. Infraocular ridge (Fig. 84) fine, not running behind the posterior margin of the eye. Temple fully rounded to slightly angled. Pronotum (Fig. 82) with maximum width 1.68x base width, anteriorly sides rounded, angles obtuse. Behind clypeal area with a shallow, transversal impression, on pronotal disc with one in anterior 1/4 of pronotal midline and one surrounding hind half of midline. Clypeal area and supraantennal prominences without punctation, albeit with some tiny, regular punctures. Posterior half of pronotal midline as an unpunctured, shiny stripe (slightly elevated). Head with 18-20 'longitudinal' puncture lines, pronotum with about 28 'longitudinal' puncture lines, on mid-vertex punctation somewhat loosened, on pronotum puncture sizes same as on head.

Elytra and abdomen. Elytra (Fig. 83) dilating posteriorly, behind scutellum with very shallow impressions. Medially serrate fringe (Fig. 30) present on hind margin of tergite VII. Elytral punctation not umbilicate, size similar to that on head and pronotum, interspaces about 1/3 of puncture diameters. On bases of abdominal tergites (posterior to basal ridges) transversal coriaceous microsculpture, segments with a few small, scattered punctures. Aedeagus as in Fig. 93.

ETYMOLOGY: The species is named after the unusually elongate parameres of the aedeagus in this species.

COMPARATIVE NOTES: From the similarly 'bicoloured' and small-sized species ( P. portobelo and P. brasilianus ) it can be distinguished by the bulging eyes and yellowish shoulders. P. minutus is significantly smaller.

DISTRIBUTION: The species is known from Peru (Cuzco Dept.) and Bolivia

(Cochabamba Dept.).

FIGS 96-100

BIONOMICS: Specimens were collected by beating dead branches and from rotten palm.