Pselaphomorphus sculpturatus Motschulsky, 1855

Vásquez-Vélez, Laura M., 2016, Revision of the genus Pselaphomorphus Motschulsky, 1855 (Staphylinidae, Pselaphinae: Jubini), Zootaxa 4107 (1), pp. 1-48 : 39-41

Pselaphomorphus sculpturatus Motschulsky, 1855

( Fig. 29 )

Pselaphomorphus sculpturatus Motschulsky, 1855: 15 .

Diagnosis. Pselaphomorphus sculpturatus is characterized by the combination of medium body size (between 2.0 and 3.0 mm), phallobase regular, accessory lobes absent and median lobe divided apically into two arms.

Redescription. Male. Body length 2.4 mm. Body flattened dorsally, brownish, with yellow pilosity along body. Head pear-shaped (length 0.6 mm, width 0.4 mm). Base of antennal tubercle at least as long as diameter of eye. Longitudinal sulcus wider between eyes, spindle-shaped. Eyes kidney-shaped (diameter 0.1 mm). Antennal length 1.25 mm. Antennomere length as follows: 1 (0.1 mm), 2 (0.075 mm), 3(0.075 mm), 4 and 5 (0.1 mm), 6 (0.085 mm), 7 to 9 (0.1 mm), 10 (0.15 mm), and 11 (0.25 mm), clava inconspicuous. Pronotum quadrate (length and width 0.5 mm). Lateral lobes triangular, rounded basally. Antebasal lobe rectangular, at least five times wider than long. Longitudinal and transverse sulci with similar width thoroughly. Elytra length 0.6 mm; width 0.75 mm. Humeral teeth absent. Sutural fovea and basal discal fovea transversely elongate. Abdominal segments I–V dorsally with length as follows: 0.4, 0.05, 0.05, 0.05, and 0.06 (mm). Ventrally, segment V distally round, segment VI with elongate depression. Genitalia. Phallobase regular, with short arms. Median lobe wider towards apex, distally divided into two arms. Right arm subdivided into two slender branches, projected dorsally. Left arm shorter, curved toward right arm. Accessory lobes absent ( Figs. 29 B, 29C).

Female. Body length 2.4 mm. Body flattened dorsally. Reddish to brownish, with yellow pilosity along body. Head pear-shaped (length 0.6 mm, width 0.4 mm). Antennal tubercle with base at least as long as diameter of eye. Longitudinal sulcus wider between eyes, spindle-shaped. Eyes kidney-shaped (diameter 0.075 mm). Antennae length 1.2 mm. Antennomere length as follows: 1 (0.1mm), 2 (0.05mm), 3 (0.075 mm), 4 and 5 (0.1 mm), 6 (0.085 mm), 7 to 9 (0.15 mm), 10 (0.12 mm), and 11 (0.2 mm), clava inconspicuous. Pronotum is elongate (length 0.5 mm; width 0.45 mm. Lateral lobes triangular, basally rounded. Antebasal lobe rectangular, at least five times wider than long. Longitudinal and transverse sulci with similar width thoroughly. Elytra length 0.5 mm, width 0.45 mm, flight wings absent. Elytral base with ridge ended laterally in strong spine. Basal foveae and subhumeral foveae present. Abdominal segments I–V dorsally with length as follow: 0.5, 0.05, 0.05, 0.05, and 0.05 (mm).

Material examined. Panama: 1 male, Panama, Las Cumbres. VII-18 to 24-1982. U.V. light. H. Wolda ( FMNH); 1 female, same data except X-24-1975. sift leaf litter, D.S. Chandler (compared to Motschulsky type by D.S. Chandler) ( UNHC); 33 males (1 cleared and dissected, 1 dissected), 2 females (1 cleared and dissected), same data except, XII-1974 / XI-1-1983 ( UNHC); 15 males, 1 female, Canal Zone, Barro Colorado Island, VII-27-1977 / IX-28-1982, UV trap, H. Wolda ( UNHC); 2 males, Panama, Barro Colorado Island, 09°11’N, 79°51’W, VII-15- 1994, flight intercept trap, D. Banks ( UNHC); 1 male, Panama, Barro Colorado Island, 09°11’N, 79°51’W, flight intercept trap, S. Chatzimanolis ( UNHC); 1 male, Canal Zone, Barro Colorado Island, II-25-1976, A. Newton ( FMNH); 1 male, Canal Zone, Cerro Ancon, XI-24-1975, sift leaf litter, D.S. Chandler ( UNHC); 1 female, Canal Zone, Frijoles train stop, X-25-1975, sift leaf litter, D.S. Chandler ( UNHC); 1 male, 2 females, Panama Province, Altos de Maje, X-6/15 -1975, berlese litter, D.S. Chandler ( UNHC); 4 males, Colón Parque Nacional Soberania, Pipeline Road, Km 2.0, 09°07’N 79°45’W, V-23/27 -1995, flight intercept trap, J. Jolly, C. Chaboo ( KSEM); 1 male, 1 female, Colón Parque Nacional Soberania, Pipeline Road, Km 2.0, 09°07’N 79°45’W, V-20/29 -1995, leaf litter, J. Jolly, C. Chaboo ( KSEM); 2 males, Colon 14 km N jct. Escobal & Piña roads, VI-02/11 -1996, flight intercept trap, J. Ashe, R. Brooks, PAN1AB96 181B ( KSEM); 2 males, Panama 09°05’N, 79°40’W, Plantation road, 6.9 km S Gamboa, 80 m, VI-7/22 -1995, flight intercept trap, J. Ashe, R. Brooks ( KSEM); 4 males, 16 km W Almirante Bocas de Toro, X-18-1979 / IV-29-1980, UV light, H. Wolda ( UNHC); 44 males (1 dissected), Colon Province, San Lorenzo Forest, STRI crane site, 09°17’N, 79°58’W, X-8-2003 / V-24-2004, flight intercept trap, A.K. Tishechkin ( LSAM); 6 males, Colon Province, San Lorenzo Forest, 09°17’N, 79°58’W, X-13 / XI-30-2003, UV light, R. Kitching ( MHNG); 3 males, Colon Province, San Lorenzo Forest, 09°17’N, 79°58’W, IX-27-2003, forest litter, winkler extraction, A. Dejean, G. Orivel, B. Cobrara, H.P. Aberlenc & M. Leponce ( LSAM); 1 male, Colon Province, San Lorenzo Forest, 09°17’N, 79°58’W, X-4-2003, microhabitat berlese, litter ( LSAM); 2 males, 9 females, Canal Zone, IX/ X-1938, A. Bierig ( FMNH).

Note. The female specimens listed above are considered to belong to P. sculpturatus because they were compared to and found matching one particular female (labeled “ Panama, Las Cumbres. X-24-1975. Sift litter. D. Chandler”) compared by D. Chandler to the Motschulsky type, deposited in the Zoological Museum of Moscow State University, Russia. The males listed in the material examined are considered to belong to this species because they come from the same localities as the females, many of them were collected in the same events, and correspond in body size to the females.

Figures

FIGURE 29. Pselaphomorphus sculpturatus Motschusky. A. Dorsal habitus. B. Aedeagus dorsal view. C. Aedeagus lateral view.