Photinopygus alloportokalis Chatzimanolis, 2023

Chatzimanolis, Stylianos, 2023, A revision of the genus Photinopygus Chatzimanolis (Staphylinidae: Xanthopygina), Zootaxa 5292 (1), pp. 1-100 : 13-16

Photinopygus alloportokalis Chatzimanolis , new species

( Figs. 15–22 )

urn:lsid:zoobank.org:act:D8A9CB9E-3090-400A-B4E3-23D11FC01167

Type material. Holotype, here designated, male, with labels: “ Panama: Panamá Prov. Gamboa-Pipeline Road Rd area [9.13°, -79.52°], beating: June 1, 1996 [1.vi.1996], Steve Lingafelter Coll. [leg.]” / “SM0059028” / “Holotype Photinopygus alloportokalis Chatzimanolis , des. Chatzimanolis 2022 ”. In the collection of SEMC.

Paratypes, three, here designated: “ Panama: Panamá Prov. Gamboa-Pipeline Road area [9.13°, -79.52°], recently fallen tree: June 1, 1996 [1.vi.1996], Steve Lingafelter [leg.]” / “SM0059092”, “SM0059091” (1 ♁, 1 ♀ SEMC); “ Darién Prov., Santa Fe [8.65°, -78.17°], Panama, -67 [1967]” / “ malaise trap ” / “FMNHINS3989910” (1 ♀ FMNH). All paratypes with label: “ Paratype Photinopygus alloportokalis Chatzimanolis , des. Chatzimanolis 2022 ”.

Diagnosis. Photinopygus alloportokalis 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 alloportokalis can be distinguished from P. dimidiatus and P. rufipennis by the dark brown to black mesoscutellum (orange in the other two species), and the shape of the median lobe: in lateral view with subapical teeth-like structures ( Fig. 19 ); hook-like structure in the other two species ( Figs. 113 , 195 ).

Description. Forebody ( Fig. 15 ) length 5.6–6.4 mm. Color of head, pronotum and mesoscutellum dark brown to black; antennomeres 1–3, 11dark orange; antennomeres 4–10 dark brown to black; legs dark brown to black except tibia and tarsi dark orange (some specimens with profemur also dark orange); elytra orange; abdomen dark brown to black except segments 7–8 (orange). Antenna ( Fig. 18 ) 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 = 1.27–1.40. 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. 17 ) subquadrate; PW/PL ratio = 1.0. 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 = 1.21–1.45. 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 ♁s, sternite 7 without porose structure, sternite 7 with shallow and broad emargination posteriorly; sternite 8 with small U-shaped emargination posteriorly ( Fig. 16 ). Aedeagus as in Figs. 19–21 ; in dorsal view paramere almost parallel-sided converging to broad rounded apex; paramere shorter and as wide as median lobe; in lateral view paramere becoming gradually narrower near tip; paramere with peg setae in multiple lateral rows as in Fig. 21 . Median lobe in dorsal view converging to narrow pointed tip; in lateral view median lobe becoming narrower, with S-like curve near apex; median lobe with subapical teeth-like structures.

Distribution. Known from the Pacific biogeographic dominion. Distributed in the provinces of Darién and Panamá in Panama. Map is shown in Fig. 22 .

Etymology. The specific epithet is derived from the Greek works άλλος (other) and πορτοκαλί (orange).

Habitat. Collected from recently fallen trees and with malaise traps at lowland elevations.

Figures

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

FIGURES 15–18. Photinopygus alloportokalis Chatzimanolis. 15. Habitus. 16. Sternites 7–8. 1.7 Pronotum. 18. Antenna. Not to scale.

FIGURES 19–21. Aedeagus of Photinopygus alloportokalis Chatzimanolis. 19. Lateral view. 20. Dorsal view. 21. 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 195–197. Aedeagus of Photinopygus rufipennis (Sharp). 195. Lateral view. 196. Dorsal view. 197. Detail of paramere, ventral view.