Ctenopeuca heynei Bernhauer, 1915

Barroso, Flavia B., Eldredge, K. Taro & Caron, Edilson, 2024, Review of Ctenopeuca Bernhauer, a spiny, pipevine flower-associated rove beetle from South America (Coleoptera, Staphylinidae, Aleocharinae, Oxypodini), Zootaxa 5497 (2), pp. 255-266 : 261

Ctenopeuca heynei Bernhauer, 1915

( Figs. 1–3 , 21–27 )

Type material. Lectotype ( FMNH), male, here designated ( Figs. 1–3 ). Labels: 1) “Chicago NHMus/ M.Bernhauer / Collection” [white label, printed in black]; 2) “ 1000m ” [white label, manuscript]; 3) “ Chanchamayo / Peru. A.Heyne ” [white label, printed in black]; 4) “ Ctenopeuca / Heynei Bernh. /typus” [white old label, manuscript]; 5) [male symbol, white label, manuscript]; 6) “ FMNH ” [white label, printed in black]; 7) “Lectotype/ Ctenopeuca /heynei [male symbol + Greek letter alpha]/des. K. T.Eldredge 2012” [red label, the first and last line (except 2012) printed in black, the rest manuscript]; 8) “QR Code/FMNHINS/3982449/ FIELD MUSEUM /Pinned” [white label, printed in black]; 9) “PHOTOGRAPHED/ S. Ware 2021” [white label, prinited in black]. Note: Bernahuer (1915) did not specify how many specimens were studied.

Paralectotype ( FMNH), female .

Diagnosis. Ctenopeuca heynei differs from C. romani by having head and pronotum with the same color and abdominal segments III–IV slightly lighter than V–VII ( Figs. 1–3 ); antennomere 4 quadrate; posterior margin of abdominal tergum VIII of male with a prominent tooth on each side of serrate region ( Fig. 21 ); posterior margin of abdominal tergum VIII of female with a slightly tooth on each side of emarginate region ( Fig. 26 ).

Redescription. Male. Body length 6.0 mm, humeral width 1.0 mm. Head, antennomeres 4–11, pronotum, postero-lateral angle region of elytra and abdominal segments IV–VII brown to dark brown, the rest of body yellowish to light brown ( Fig. 2 ). Antennomere 4 quadrate. Abdominal spine of tergum IV somewhat quadrate in lateral view ( Fig. 1 , ST4); spine of sternum III three times longer than the spine of sternum IV ( Fig. 1 , SS3 and SS4); tergum VIII with posterior margin serrate on mesal three-fifth, a prominent tooth on each side of serrate region ( Fig. 21 ); sternum VIII with posterior margin strongly projected medially ( Fig. 22 ); median lobe of aedeagus strongly curved paramerally in lateral view ( Fig. 24 ), apical half with ventral face evenly curved. Female. Similar to male, except tergum VIII with posterior margin emarginate on mesal three-fifth, a prominent tooth on each side of emarginate region ( Fig. 26 ); sternum VIII with posterior margin slightly projected medially ( Fig. 27 ); spermatheca not found.

Distribution. Peru: Junín (Chanchamayo) ( Fig. 34 )

Biological notes. Only the type material is known and collected from Chanchamayo, presumably in the province in northern Junín region, Peru. The lectotype has a label indicating that the specimen was collected at an altitude of 1000 meters.

Figures

FIGURE 34. Map of Ctenopeuca distribution. The green spot indicates C. heynei (not exact record), the pink spot indicates C. romani (not exact record), and the red spot indicates C. romani (exact record).

FIGURES 1–6. Habitus of Ctenopeuca. 1–3) Lectotype of C. heynei Bernhauer (FMNH): 1) lateral view (ST3 indicates spine of tergum III, SS3 indicates spine of sternum III, ST4 indicates spine of tergum IV, SS4 indicates spine of sternum IV, ST7 indicates spine of tergum VII), 2) dorsal view, 3) ventral view. 1–3) Lectotype of C. romani Bernhauer (FMNH): 4) lateral view, 5) dorsal view, 6) ventral view. Scale bars 3.0 mm.

FIGURES 21–27. Ctenopeuca heynei: 21) Tergum VIII, male, dorsal view; 22) Sternum VIII, male, dorsal view; 23) Median lobe, ventral view; 24) Median lobe, lateral view; 25) Paramere; 26) Tergum VIII, female, dorsal view; 27) Sternum VIII, female, dorsal view.