Parosus campbelli, 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 : 94-96

Parosus campbelli sp. nov. Figs 27, 43, 49, 60-63

TYPE MATERIAL: HOLOTYPE (3), “ ECUADOR, Napo [Prov.], 2km S Oritoyacu , 22km S Baeza [0°39'21"S, 77°49'31"W], 1500m, III.4-5.1976, [leg.] J. M. Campbell ” ( CNCI). – PARA- TYPES (5), ECUADOR: Napo Prov., 2km S Oritoyacu, 22km S Baeza, 1500m, 4-5.III.1976, leg. J. M. Campbell ( CNCI, 1♀, 2, HNHM, 1 MHNG, 1).

DESCRIPTION: Habitus as in Fig. 49. Measurements (n=3): HW = 0.68 (0.67- 0.70); TW = 0.66 (0.65-0.68); PW = 0.56 (0.56-0.57); SW = 0.56 (0.55-0.57); MW = 0.67 (0.65-0.69); AW = 0.64 (0.63-0.64); HL = 0.57 (0.55-0.59); EL = 0.13 (0.12-0.13); FL = 0.10 (0.10-0.11); TL = 0.24 (0.23-0.24); PL = 0.52 (0.52-0.53); SL = 0.65 (0.64- 0.65); SC = 0.63 (0.63-0.64); FB = 1.85 (1.82-1.86); BL = 3.42 (3.28-3.66) mm. Body predominantly 'unicoloured', but with peculiar reddish pronotum. Head blackish dark brown (only supraantennal prominences appear lighter, reddish), pronotum reddish medium to dark brown. Elytra and abdomen blackish dark brown, indefinite shoulder area and posterior margin of tergites with slight reddish overtone. Legs, mouthparts and antennae medium to dark brown, antennae darkening from middle to penultimate antennomere. Pubescence very scattered but medium short, composed of unusually fine hairs. A rather shiny species, but with some faint indefinite microsculpture, reducing the surface lustre.

Head and pronotum. Mid-antennal articles moderately elongate (antennomere 6 length:width = 0.078: 0.062 mm). Clypeus (Fig. 60) basally broad trapezoid, ratio of longitudinal distance of supraantennal prominence tip from eyefront to the same from clypeal front = 0.70. Infraocular ridge (Fig. 63) rather strong anteriorly, but vanishing posteriorly, ending in a small shiny tubercle at posterior edge of eye. Temple rather broadly rounded, most curved in middle (but not angled). Pronotum (Fig. 61) with maximum width 1.49-1.60x base width, sides almost evenly rounded anteriorly, straight in posterior half, anterior angles rather obtuse. Clypeal area and supraantennal prominences unpunctured, shiny. Clypeal area poorly delimited, no frontoclypeal groove, only marked by contrastingly punctated areas. Posterior half of vertex very

FIGS 44-48

Forebodies of new Parosus species. P. bicoloratus sp. n., with abdomen (44), P. brasilianus sp. n. (45), P. colombiensis sp. n. (46), P. hermani sp. n. (47), P. longicornis sp. n. (48).

deeply impressed, with some unpunctured spots anteriad of (and around) it. Pronotal midline strongly elevated, starting from a flat surface behind anterior margin, shiny, unpunctured. Two strong, bean-shaped longitudinal impressions along posterior 2/3 of midline. Strong depressions on pronotal sides. Head with about 18 'longitudinal' puncture lines, pronotum with about 16 'longitudinal' puncture lines, both with significant interspaces between punctures, head punctation loosened in posterior mid-vertex groove, pronotal punctures similar in size to the ones on head, but less sharp-edged.

Elytra and abdomen. Elytra (Fig. 62) slightly dilating posteriorly, with very shallow longitudinally elongate impressions behind scutellum, extending into a more sculptured stripe along the suture. Medially serrate fringe (Fig. 27) present on hind margin of tergite VII. Elytra with shallow, indistinct punctures, similar in size to the ones on head and pronotum, interspaces about 1/3-3/4 of puncture diameters. Abdominal tergites with a few large punctures and uneven surface on sides and base (posterior to basal ridges). Aedeagus as in Fig. 43.

ETYMOLOGY: The species is named after Dr. J. Milton Campbell, collector of the type series; he not only collected an amazing amount of interesting new species throughout the Neotropics, but also produced a long series of monographic works that provided a major source of inspiration for generations of young taxonomists.

COMPARATIVE NOTES: This species has very large head, deeply impressed posterior vertex, shallowly punctured elytra and a peculiar colouration (light pronotum and dark brown body). These characteristics separate it from all other named species.

DISTRIBUTION: The species is known only from one location in the northerncentral part of Ecuador (Napo Prov.) and its absence in other samples could be due to different life habits.

BIONOMICS: Unfortunately, no bionomical information is found on the labels.