Peripus didontus Chatzimanolis and Hightower, 2019

Chatzimanolis, Stylianos, 2019, Peripus, a new genus of Xanthopygina (Coleoptera: Staphylinidae) from South America, Zootaxa 4648 (2), pp. 371-383 : 376-377

Peripus didontus Chatzimanolis and Hightower , new species

( Figs. 3 , 6 , 24–26 , 33 )

urn:lsid:zoobank.org:act:2B3E118C-E4A9-442E-86C7-9FB85ED0CE07

Type material. Holotype, here designated, male, “ Ecuador, Napo, Yuturi Lodge Rio Napo, 270m, 0° 32’54’’ S, 76° 2’ 18’’ W, 20–21 Mar [ch] 1999; R. Brooks, D. Brzoska, ECU1B99, 010, ex: flight intercept trap ”/ “SM0153434 [barcode label]” / “ HOLOTYPE Peripus didontus Chatzimanolis and Hightower , des. Chatzimanolis and Hightower 2019”. In the collection of SEMC.

Paratypes. Eleven; three with same label as the holotype, and barcode label, SM0153431, SM01532429, SM0153443 (1♀, 1 ♂ SEMC, 1♂ UTCI) ; “ Colombia, Caquetá, Caguán Santa Rosa, 600m, 1° 37’N, 75° 37 W, 07–22.VII.2000, F. Ruales. M.1115, ex: malaise”/ “SM0549262 [barcode label]” / (1♂ SEMC) ; “ Colombia, Vaupés, Estación Biológica Mosiro-Itajura (Caparú) Antigua Cabaña, 60m, 1° 4’N, 69° 3 W [verbatim coordinates incorrect], 27/03/2003 – 03/04/2003, J. Pinzón, M.3634, ex: malaise” / “SEMC1592976 [barcode label]” / (1 ♀ SEMC) ; “ Ecuador, Napo, Yasuni Nat[ional]Park Biol[ogy]. Res[earch]. Station, 220m, 0.67° S 76.39° W, 18-26.V.1996. P. Hibbs, primary forest, ex: malaise” / (2 ♀ CNC) ; “ Peru, Loreto, 1.5 km N. Teniente Lopez, 210–240m, 2° 35’66’’ S, 76° 06’ 92’’ W, 18 July 1993, R. Leschen, Qd. 17 #199, ex: flight intercept trap ” / “SM0045846 [barcode label]” / (1 ♂ SEMC) ; “ Peru, Loreto, 1.5 km N. Teniente Lopez, 210–240m, 2° 35’66’’ S, 76° 06’ 92’’ W, 22 July 1993, R. Leschen, Qd. 18 #166, ex: flight intercept trap ” / “SM0045849, SM0045848 [barcode labels]” / (1 ♀, 1♂ SEMC) ; “ Peru, Loreto, 1.5 km N. Teniente Lopez, 210-240m, 2° 35’66’’ S, 76° 06’ 92’’ W, 23 July 1993, R. Leschen, Qd. 17 #190, ex: flight intercept trap ” / “SM0045929 [barcode label]” / (1♂ SEMC). All paratypes with label “ PARATYPE Peripus didontus Chatzimanolis and Hightower , des. Chatzimanolis and Hightower 2019”

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Diagnosis. Among all species of Peripus , P. didontus is distinctive due to the dense punctation of pronotum ( Fig. 6 ; punctation beyond the midlines contiguous to almost contiguous). Additionally, P. didontus has antennomeres 8–10 clearly longer than wide, paramere pointed apically and longer than median lobe, and median lobe with two subapical teeth.

Description. Forebody length 4.7–5.2 mm. Coloration of head and pronotum dark metallic blue purple; elytra metallic blue-green; mesoscutellum and ventral forebody shiny brown; mouthparts and antennae light brown to brown; legs brown except joints and tarsi yellowish brown; abdomen brown except posterior 2/5 of segment 7, and 8 orange.

Head with 2–4 rows of punctures on each side of central impunctate area; with sparse micropunctures and microsculpture. Head width/length ratio = 1.30; antennomeres 8–10 longer than wide. Pronotum subquadrate, width/ length ratio = 0.98; with 8–9 rows of punctures in addition to rows of punctures flanking impunctate center; punctures contiguous to almost contiguous; impunctate area in middle as wide as 2–3 punctures; with sparse micropunctures and microsculpture. Pronotum/elytra length ratio = 0.92.

Aedeagus as in Figs. 24–26 ; in dorsal view paramere slightly expanding to pointed apex; paramere longer but narrower than median lobe; in lateral view paramere slightly concave; paramere with peg setae as in Fig. 26 . Median lobe in dorsal view converging to rounded apex; median lobe with two subapical teeth; in lateral view median lobe becoming narrower near apex.

Etymology. The specific epithet is derived from the combination of the modern Greek words δύο (two) and δóντι (tooth) and refers to the presence of two teeth on the median lobe of the aedeagus.

Distribution. Known from departments of Caquetá and Vaupés in Colombia, the province of Napo in Ecuador, and the department of Loreto in Peru.

Habitat. Collected in lowland tropical rainforests (elevations 60–600 m) using flight intercept and malaise traps.

Figures

FIGURE 33. Distribution map of Peripus Chatzimanolis & Hightower: P. brunkei Chatzimanolis & Hightower (squares); P. didontus Chatzimanolis & Hightower (stars); P. madrededios Chatzimanolis & Hightower (circles); and P. monodontus Chatzimanolis & Hightower (triangles).

FIGURES 1–4. Habitus photographs of species of Peripus Chatzimanolis & Hightower. 1. The holotype of P. brunkei Chatzimanolis & Hightower. 2. Peripus madrededios Chatzimanolis & Hightower. 3. Peripus didontus Chatzimanolis & Hightower. 4. Peripus monodontus Chatzimanolis & Hightower. Not to scale.

FIGURES 5–8. Heads and pronota of Peripus Chatzimanolis & Hightower. 5. Peripus brunkei Chatzimanolis & Hightower. 6. Peripus didontus Chatzimanolis & Hightower. 7. Peripus madrededios Chatzimanolis & Hightower. 8. Peripus monodontus Chatzimanolis & Hightower. Not to scale.

FIGURES 24–26. Aedeagus of P. didontus Chatzimanolis & Hightower. 24. Dorsal view. 25. Lateral view. 26. Detail of paramere, ventral view.