Photinopygus rufipennis ( Sharp, 1884 )

Chatzimanolis, Stylianos, 2023, A revision of the genus Photinopygus Chatzimanolis (Staphylinidae: Xanthopygina), Zootaxa 5292 (1), pp. 1-100 : 77-79

Photinopygus rufipennis ( Sharp, 1884)

( Figs. 22 , 191–197 )

Xanthopygus rufipennis Sharp, 1884: 346 .

Photinopygus rufipennis (Sharp) ; Chatzimanolis 2021: 91.

Type material. Lectotype, here designated, male with labels: “[White cardboard] Xanthopygus rufipennis Type D. S. v. de Chiriquí [8.81°, -82.54°] 2-3000 ft. Champ.” / “Type” / “v. de Chiriquí 2-3000 ft. Champion” / “ B.C.A Col. I. 2. X anthopygus rufipennis, Sharp ” / “Sharp Coll. 1905-313” / “Lectotype X anthopygus rufipennis Sharp des. Chatzimanolis 2022 ”. In the collection of NHMUK. On the same cardboard piece with the lectotype, there is another female specimen which is designated as paralectotype in the following section . Paralectotypes, here designated, with labels: labels as for the lectotype (1 ♀ NHMUK) ; “v. de Chiriquí [8.81°, -82.54°] 25-4000 ft. Champion ” / “ B.C.A Col. I. 2. X anthopygus rufipennis, Sharp ” / “ Sharp Coll. 1905-313” / “ Syntype ” (5 ♁, 9 ♀ NHMUK) ; same labels and “Sharp colln. by exchange with Brit. Mus. (N. H.)” / “FMNHINS3975437” (1 ♁, 1 ♀ FMNH) ; “ Oaxaca, Mexico, Hoage” / “ B.C.A Col. I. 2. X anthopygus rufipennis, Sharp ” / “ Syntype ” (1 ♁ NHMUK) . “Bugaba [8.48°, -82.62°], Panamá, Champion ” / “ B.C.A Col. I. 2. X anthopygus rufipennis, Sharp ” / “ Syntype ” (2 ♀ NHMUK) . All paralectotypes with label “ Paralectotype X anthopygus rufipennis Sharp des. Chatzimanolis 2022 ”.

Additional Materials. COLOMBIA: Caquetá: Mun. San José del Fragua Vda. La Esmeralda [1.33°, -76.10°], 1200 m, 9–13.ix.2000, Malaise trap, E. González leg., SM0650630 (1 ♁ SEMC) ; COSTA RICA: Puntarenas: Altamira Biol.Sta. [9.029°, -83.008°], 1510–1600 m, 4–7.vi.2004, FIT, J.Ashe, Z. Falin, I. Hinojosa leg., SM0607487 (1 ♀ SEMC) ; Hacienda La Amistad [8.909°, -82.782°], 1360 m, 10–13.vi.2012,premont moist forest, fogging fungusy logs, Solodovnikov, Brunke Puliafico, Selvantharan leg. (2 ♀ NHMD) ; Las Alturas Biol. Sta. [8.9362°, -82.834°], 1660 m, 31.v.–3.vi.2004, FIT, J. Ashe, Z. Falin, I. Hinojosa leg., SM0606865, SM0606831, SM0607002 (1 ♁, 1 ♀ SEMC; 1 ♀ UTCI) ; Las Cruces Biol. Sta. [8.786°, -82.959°], 1330 m, 28–30.v.2004, J. Ashe, Z. Falin, I. Hinojosa leg., SM0606525, SM0606558 (2 ♀ SEMC) ; same locality, 27.v.1993, FIT, J.S. Ashe & A.K. Ashe leg., SM0080025 (1 ♀ SEMC) ; MEXICO: Guerrero: Las Compuertas [17.08°, -100.07°], 6.iv.1964, J. Slitonen leg., GAC7947 (1 ♀ MZH) ; Hidalgo: Otongo , W of Tlanchinol Pino-Encino [20.96°, -98.76°], 870 m, 28.xi.–28.xii.1981, carrion trap, Morón leg., SM0079992 (1 ♀ SEMC) ; Oaxaca: unknown locality, Sharp coll. (2 ♀ NHMUK) ; unknown state: unknown locality, Flohr coll. (1 ♁, 2 ♀ MFNB) ; PANAMA: Chiriquí: Volcán de Chiriquí [8.81°, -82.54°], 1372 m, Cameron coll., Bierig coll. (1 ♀ NHMUK) ; same locality, Bierig coll., FMNHINS3989883, FMNHINS3989880, FMNHINS3975438, FMNHINS3975440, FMNHINS3975439, FMNHINS3975442, FMNHINS3975441 (4 ♁, 3 ♀ FMNH; 1 ♀ AMNH) ; 27.7 km W. Volcan, Hartmann’s Finca [8.86°, -82.75°], 1650m, 17–18.vi.1996, FIT, J. Ashe, R. Brooks leg., SM0016578, SM0016590 (1 ♁, 1 ♀ SEMC) .

Diagnosis. Photinopygus rufipennis belongs in the narrow pronotum species group. Photinopygus alloportokalis , P. dimidiatus and P. rufipennis can be distinguished from all other species in Photinopygus due to the presence of orange elytra. Photinopygus rufipennis and P. dimidiatus can be distinguished from P. alloportokalis by the orange mesoscutellum (dark brown to black in P. alloportokalis ), and the shape of the median lobe: in lateral view with a hook-like structure ( Figs. 113 , 195 ) instead of an apical tooth-like structure in P. alloportokalis ( Fig. 19 ). In P. rufipennis the apical tip of the paramere is emarginate in dorsal view ( Figs. 196–197 ), while in P. dimidiatus , the apical tip of the paramere is rounded in dorsal view ( Figs. 114–115 ).

Description. Forebody ( Fig. 191 ) length 5.6–6.6 mm. Color of head and pronotum dark brown to black; antennae orange; pro- and middle legs orange (some specimens with pro- and mesotibia dark brown to black); hind legs dark brown to black except metatarsi dark orange; elytra and mesoscutellum orange; abdomen dark brown to black except segments 7–8 (orange). Antenna ( Fig. 194 ) with antennomere 3 without tomentose pubescence; antennomere 4 with tomentose pubescence; antennomeres 4–5 longer than wide; antennomere 6 subquadrate; antennomeres 7–10 transverse. Head transverse; HW/HL ratio = 1.29–1.40. Left mandible with bicuspid tooth. 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. Pronotum ( Fig. 193 ) subquadrate; PW/PL ratio = 1.0–1.10. Lateral margins of pronotum in dorsal view posteriad of midpoint strongly converging; pronotum with 3–4 sparse rows of punctures on each half beside median impunctate line; distance between punctures as wide as 1–2 punctures but large areas of pronotum without punctures. EL/PL ratio = 1.29–1.40. Elytra with dense punctation; distance between punctures as wide as 0.5–1 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), although on some specimens curved carina not as impressed on tergite 5. In males, sternite 7 without porose structure, sternite 7 with very shallow and broad emargination posteriorly; sternite 8 with small U-shaped emargination posteriorly ( Fig. 192 ). Aedeagus as in Figs. 195–197 ; in dorsal view paramere almost parallel-sided converging to emarginate apex; paramere shorter and narrower than median lobe; in lateral view paramere becoming slightly narrower near tip; paramere with peg setae in lateral rows as in Fig. 197 . Median lobe in dorsal view converging to narrow pointed tip; in lateral view median lobe becoming narrower, with strong apical hook-like tooth.

Distribution. Known from the Mesoamerican and Pacific dominions. Distributed in the department of Caquetá in Colombia, the province of Puntarenas in Costa Rica, the states of Guerrero, Hidalgo and Oaxaca in Mexico, and the province of Chiriquí in Panama. Márquez & Asiain (2012) and Reyes-Hernández & Navarrete-Heredia (2021) also reported P. rufipennis from the states of Jalisco and San Luis Potosí. Map is shown in Fig. 22 .

Habitat. Collected at mid elevations (870–1660 m) using flight intercept and malaise traps; carrion traps and by fogging fungusy logs.

Figures

FIGURE 22. Distribution map of Photinopygus alloportokalis Chatzimanolis (triangles), P. dimidiatus (Bernhauer) (circle), and P. rufipennis (Sharp) (squares).

FIGURES 191–194. Photinopygus rufipennis (Sharp). 191. Habitus. 192. Sternites 7–8. 193. Pronotum. 194. Antenna. Not to scale.

FIGURES 195–197. Aedeagus of Photinopygus rufipennis (Sharp). 195. Lateral view. 196. Dorsal view. 197. Detail of paramere, ventral view.

FIGURES 113–115. Aedeagus of Photinopygus dimidiatus (Bernhauer). 113) Lateral view. 114. Dorsal view. 115. Detail of paramere, ventral view.

FIGURES 19–21. Aedeagus of Photinopygus alloportokalis Chatzimanolis. 19. Lateral view. 20. Dorsal view. 21. Detail of paramere, ventral view.