Photinopygus iopterus ( Erichson, 1839 )

Chatzimanolis, Stylianos, 2023, A revision of the genus Photinopygus Chatzimanolis (Staphylinidae: Xanthopygina), Zootaxa 5292 (1), pp. 1-100 : 58-61

Photinopygus iopterus ( Erichson, 1839)

( Figs. 138–145 )

Staphylinus iopterus Erichson, 1839: 366 .

Xanthopygus iopterus (Erichson) ; Kraatz 1857: 539.

Photinopygus iopterus (Erichson) ; Chatzimanolis 2021: 91.

Type material. Lectotype, here designated, female with labels: “5909” / “Type” / “Hist. -Coll. ( Coleoptera ) Nr. 5909 Staphylinus iopterus Erichs. Brasil., Virmond, Zool. Mus. Berlin” / “ iopterus Er. Brasil. Virm” / “ Syntype Staphylinus iopterus Erichson, 1839 labelled by MFNB 2020” / “ Lectotype Staphylinus iopterus Erichson des. Chatzimanolis 2022 ”. In the collection of MFNB.

Additional Materials. ARGENTINA: Misiones: Loreto [-27.33°, -55.52°], xii.1955, FMNHINS3975578, FMNHINS3975575, FMNHINS3975577, FMNHINS3975576 (1 ♁, 3 ♀ FMNH) ; BRAZIL: Bahia: unknown locality, Cameron coll. (1 ♁, 1 ♀ NHMUK) ; Espírito Santo: Trijuco Preto , 900 m, iii.1940, E. Reitter leg. (1 ♁ NMW) ; unknown locality, Fry coll., Bernhauer coll., FMNHINS4030587 (1 ♀ FMNH) ; unknown locality, Sharp coll. (1 ♀ NHMUK) ; Paraná: Rolândia [-23.30°, -51.37°], ix.1947, A. Maller leg. (3 ♁, 1 ♀ AMNH) ; same locality, x.1947, A. Maller leg. (1 ♀ AMNH) ; Pernambuco: Caruaru [-8.28°, -35.98°], 900 m, vi.1972, J. Lima leg (1 ♁ AMNH) ; Rio de Janeiro: Nova Friburgo [-22.38°, -42.56°], F. Sahlberg leg., GAC.7923, GAC.7924 (2 ♀ MZH) ; Petrópolis [-22.51°, -43.18°], F. Sahlberg leg., GAC.7922 (1 ♀ MZH) ; same locality, H. Schulz leg., Bernhauer coll., FMNINS3975380 (1 ♀ FMNH) ; same locality, H. Schulz leg., Scheerpeltz coll. (1 ♁ NMW) ; Rio de Janeiro [-22.91°, -43.20°], Fry coll., Bernhauer coll., FMNHINS3975382, FMNHINS4030580, FMNHINS4030581 (3 ♀ FMNH) ; same locality (2 ♁ CMNH) ; Teresópolis [-22.41°, -42.97°], D. Melo leg., FMNHINS4030567 (1 ♁ FMNH) ; Rio Grande do Sul: unknown locality, Bernhauer Bierig coll., FMNHINS3975373, FMNHINS3975374, FMNHINS3975375, FMNHINS3975376 (2 ♁, 2 ♀ FMNH) ; Rondônia: Vilhena [-12.74°, -60.15°], 23.ii.1961, J. & B. Bechné leg. (1 ♁ CNC) ; Santa Catarina : Mafra [-26.12°, -49.80°], xii.1939, J. Guerin leg., Bierig coll., FMNHINS3975372 (1 ♀ FMNH) ; Nova Teutônia [Seara] [-27.25°, -50.33°], 20.x.1953, F. Plaumann leg. (1 ♁ AMNH) ; same locality, xi.1966, F. Plaumann leg. (1 ♀ CNC) ; same locality, 300–500 m, ii.[19]71, F. Plaumann leg. (2 ♁, 1 ♀ CNC) ; same locality, 300–500 m, xii.[19]70, F. Plaumann leg. (1 ♁ CNC) ; same locality, 300– 500 m, ix.1964, F. Plaumann leg., FMNHINS3975523, FMNHINS3975524 (1 ♁, 1 ♀ FMNH) ; unknown locality, Scheerpeltz coll. (1 ♁ NMW); unknown locality, Fry coll., Bernhauer coll., FMNHINS4030582 (1 ♁ FMNH); São Paulo: Barueri [-23.51°, -46.88°], iii.1966, K. Lenko leg. (1 ♁ CNC) ; Bosque de Saúde [-23.61°, -46.62°], 19.x.[19]26, Fr. Ohaus leg. (1 ♀ MFNB) ; Embu das Artes [-23.65°, -46.85°], 15.ii.1946, F. Lane leg. (1 ♁ CAS) ; São Paulo [-23.55°, -46.63°], Bernhauer coll., FMNHINS3975377, FMNHINS3975378 (1 ♁, 1 ♀ FMNH) ; Serra da Bocaina [NP], São José do Barreiro [-22.65°, -44.58°], 1650 m, x–xi.1969, M. Alvarenga, Seabra leg. (3 ♁ AMNH) ; same locality, 1960 m, xi.1970, M. Alvarenga leg. (1 ♁ AMNH) ; PARAGUAY: Alto Paraná: unknown locality, 17.ii.[19]35, Griveau coll. (1 ♀ MHNG) ; unknown locality, 12.ix.[19]34, Griveau coll. (1 ♀ MHNG) ; unknown locality, 12.xii.[19]35, Griveau coll. (1 ♁ MHNG); Guairá: Villarrica [del Espirito Santo] [-25.75°, -56.43°], xi.1925, F. Schade leg., Scheerpeltz coll. (3 ♀ NMW) ; Itapúa: Encarnación [-27.33°, -55.88°], xii.[19]48, F. Schade leg., Scheerpeltz coll. (1 ♁, 1 ♀ NMW) ; Hohenau [-27.08°, -55.65°], Bernhauer coll., FMNHINS3975379 (1 ♀ FMNH) ; Pirapó [-26.86°, -55.55°], 28–31.xii.1971, L. Peña leg. (1 ♁ CNC) ; San Pedro Mi, San Rafael Reserve [-26.321°, -55.805°], 90 m, 27–30.xi.2000, FIT, Z.H. Falin leg., SM0235571 (1 ♁ SEMC) ; same locality, 27.xi.2000, fruitfall, Z.H. Falin leg., SM0235545 (1 ♁ SEMC) ; unknown department: unknown locality, C. Bruch leg., Bernhauer coll., FMNHINS3975381 (1 ♀ FMNH) ; PERU: Junín: La Merced, La Merced-Villa Rica Rd. [-10.95°, -75.29°], 900 m, 15–21.x.1999, FIT, R. Brooks leg., SM0149947 (1 ♁ SEMC) ; Pasco: Rio Toro [-11.09°, -75.34°] (2 ♁, 2 ♀ MFNB) .

Diagnosis. Photinopygus iopterus belongs in the concave pronotum species group.Among species of that group that have pronotum with dense punctation (i.e., with 5–9 organized rows of punctures on each half beside median impunctate line), antennomeres 4–5 longer than wide, and sternite 7 in males with porose structure, P. iopterus can be recognized by the following combination of characters: pronotum with 6–7 dense rows of punctures on each half beside median impunctate line ( Fig. 141 ); antennae with uniform orange color; sternite 8 in males with large deep U-shaped emargination posteriorly ( Fig. 140 ), sternite 7 in males with narrow, deep but not ‘shaved’ emargination posteriorly ( Fig. 140 ), antennomeres 8–10 subquadrate ( Fig. 142 ), aedeagus with paramere subequal to median lobe ( Fig. 143 ), paramere in lateral view almost parallel-sided; ( Fig. 143 ).

Description. Forebody ( Fig. 139 ) length 7.0– 8.3 mm. Color of head, pronotum and mesoscutellum dark brown to black; antennae orange legs dark brown to black except protarsi dark orange (in some specimens meso-, metatarsi light brown); elytra metallic blue with green or purple overtones; abdomen dark brown to black except posterior half of sternite 7 and sternite orange. Antenna ( Fig. 142 ) with antennomere 3 without tomentose pubescence; antennomere 4 with tomentose pubescence; antennomeres 4–6 longer than wide; antennomeres 7–10 subquadrate. Head transverse; HW/HL ratio = 1.30–1.47. Posterior margin of head slightly extended posteriad on each side of neck. Head with medium-sized punctures, distance between punctures as wide as 1–2 punctures but punctures denser posteriorly. Left mandible with bicuspid tooth. Pronotum ( Fig. 141 ) subquadrate; PW/PL ratio = 1–1.09. Lateral margins of pronotum in dorsal view posteriad of midpoint concave; pronotum with 6–7 dense rows of punctures on each half beside median impunctate line; distance between punctures as wide as 0.5–1 punctures but areas of pronotum without punctures. EL/PL ratio = 1.38–1.52. Elytra with dense punctation; distance between punctures as wide as 0–0.5 punctures. Metepisternum covered with punctures (impunctate area less than 1/3). Abdomen with tergites 3–4 setose; tergites 3–5 with curved carina (arch-like); sternite 7 with large porose structure, sternite 7 with narrow and deep emargination posteriorly; sternite 8 with large U-shaped emargination posteriorly ( Fig. 140 ). Aedeagus as in Figs. 143–145 ; in dorsal view paramere converging to rounded apex; paramere subequal and slightly narrower (except apically) than median lobe; in lateral view paramere almost parallel-sided; paramere with peg setae in multiple lateral rows as in Fig. 145 . Median lobe in dorsal view converging to narrow pointed tip; in lateral view median lobe becoming narrower; median lobe with small subapical tooth.

Distribution. Known from the South Brazilian, Chacoan and Paraná biogeographic dominions. Distributed in the province of Misiones in Argentina, the states of Bahia, Espírito Santo, Paraná, Pernambuco, Rio de Janeiro, Rio Grande do Sul, Rondônia, Santa Catarina and São Paulo in Brazil, the departments of Alto Paraná, Guairá and Itapúa in Paraguay, and the department of Junín in Peru. Map is shown in Fig. 138 .

Habitat. Collected at low to mid elevations (90–1960 m) in fruitfall and flight intercept traps.

Figures

FIGURE 138. Distribution map of Photinopygus hilaris (Erichson) (triangles), P. janthinipennis (Blanchard) (square), and P. iopterus (Erichson) (circles).

FIGURES 139–142. Photinopygus iopterus (Erichson). 139. Habitus. 140. Sternites 7–8. 141. Pronotum. 142. Antenna. Not to scale.

FIGURES 143–145. Aedeagus of Photinopygus iopterus (Erichson). 143. Lateral view. 144. Dorsal view. 145. Detail of paramere, ventral view.