Piezonemus durus, Jordan, 1904

Trýzna, Miloš, Caballero-Serrano, Verónica & Carrasco, Juan Carlos, 2024, Review of the Neotropical Piezonemus Jordan with type designations, description of Piezonemus espoch sp. nov. from Ecuador, and notes on the tribe Piesocorynini Valentine with keys to world genera (Coleoptera: Anthribidae), Zootaxa 5415 (3), pp. 401-435 : 414

Piezonemus durus Jordan, 1904

( Figs 43–61 , 70–72 )

Piezonemus durus Jordan, 1904: 276. Bovie 1906: 278 (catalogue); Wolfrum 1929: 65, 1953: 27 (catalogues); Blackwelder 1947: 769 (catalogue); Valentine 1999: 271 (relationship within the tribe Piesocorynini ); Rheinheimer 2004: 70 (catalogue); Trýzna et al. 2022: 252, figs 32–38 (32—dorsal habitus, 33—head, 34—pygidium, 35—pronotum, 36—antenna, 37— mesotibia and mesotarsus, 38—lateral habitus).

Type locality. Brazil: “Jatahy, Prov. Goyaz”

Type material. Lectotype, male (designated here, Figs 43–48 , 102 ): ‘Type [p, typical round label with red margin used in BMNH]’ // ‘Jatahy. / Prov. Goyas. [p] / Piezonemus / durus. / Type. 1904 / N. Z. p. 276 [= Novitates Zoologicae, page 276] [h]’ // ‘ Karl Jordan Coll. / B.M. 1940-109. [p]’ // ‘LECTOTYPE / Piezonemus durus / Jordan, 1904 / M. Trýzna design., 2023’ [red, p] ( BMNH). Female: ‘Jatahy’ / ( GOYAZ) [p] // ‘Karl Jordan Coll. / B.M. 1940-109. [p]’ ( BMNH); ‘ PARALECTOTYPE / Piezonemus durus / Jordan, 1904 / M. Trýzna design., 2023’ [red, p] ( BMNH) . Other paralectotypes not examined directly by the first author: Unsexed , 1 ex.: ‘ Jatahy’ / ( GOYAZ) [p] // ‘Karl Jordan Coll. / B.M. 1940-109. [p]’ ( BMNH) . Unsexed, 3 exx.: ‘Jatahy. / Prov. Goyas. [p] // ‘Karl Jordan Coll. / B.M. 1940-109. [p]’ ( BMNH) . Unsexed, 2 exx.: ‘Jatahy. / Prov. Goyas. Brésil [p, green paper] // 1 with ‘Karl Jordan Coll. / B.M. 1940-109. [p]’ and the other with ‘ Pres. E. Gowing-Scopes. / Brit. Mus. 1968-131 // Piezonemus / durus / 1904 Jord. [h] / Karl Jordan det. [p]’ ( BMNH) .

Note. Jordan (1904: 276) stated only “a series”, without the exact number of specimens of the type series. Lectotype and 7 Paralectotypes are listed above.

Other material: 1 male: ‘Sta. Cruz / Bolivia [p]’ // ‘ Karl Jordan Coll. / B.M. 1940-109. [p]’ ( BMNH) . 1 male ( Figs 49–55 ): Ecuador, Sucumbios prov., Shushufindi , S 0°42´, W 77°19´, 200–400 m, 4.–18.xii.2004, Zd. Mráček leg. ( MTDC) . 2 males: Ecuador, Morona-Santiago [province], 30 km NE of Macas, 21.ii.2022, Cascada de Musap , 1085 m, S 02°07´45´´, W 77°55´58´´, M. Trýzna & J.C. Carrasco leg. (1 male with dissected terminalia ( Figs 56–61 ) in MTDC, 1 male in MERC) .

Identification. Coloration of the cuticle dark, black to dark brown, basic setae of the upper part of the body dark, with sparse tomentum of whitish grey setae, denser on the head and scutellum. Lower part of body with dense greyish setae. Small irregular clusters of greyish setae on even-numbered elytral intervals, rest of intervals dark, most noticeable on elytral intervals II, IV and VI. Antennomeres rufous brown, only antennomeres IX and X dark brown to black. Legs dark brown, femora, tibiae covered with grey setae. Colour pattern as in Figs 43–55 , 72 . Male tarsomere I of mesotarsus shorter than others together ( Figs 49, 53 ) and dilated at apex on inner side. Pygidium of male elongate, ratio of the maximum length to maximum width 1.24 ( Figs 46 , 54 ), pygidium of female with distinct promontory before apical edge, this projection high and deeply divided basally ( Fig. 70 ). Eyes shorter (cf. Figs 44 , 50— P . durus; and 63— P. lateralis ), dorsal ocular index 0.91 in male. Body size ca. 5.3–5.5 mm.

Lectotype, male ( Figs 43–48 ). Measurements (in mm): Total body length—5.36. Head: total length—0.86, length of rostrum—0.19, maximum width of rostrum—1.07, length of eye—0.71, maximum width across eyes— 1.31, minimum distance between eyes—0.41.Antenna: length of segments: II—0.21, III—0.34, IV—0.28, V—0.26, VI—0.21, VII—0.18, VIII—0.21, IX—0.21, X—0.11, XI—0.20, width of segment IX—0.14. Pronotum: maximum length—1.38, maximum width—1.95, minimum width—1.25. Elytra: maximum length—3.20, maximum width— 1.90. Pygidium: maximum length—0.46, maximum width—0.37.

Male genitalia and associated structures ( Figs 57–61 ). Aedeagus ( Fig. 59 ) long, narrow, widest in apical part, this part rectangular. Pedon narrow, its base 2x wider than the rest of pedon, this apical part almost the same width along its entire length. Tectum broadly triangular, form equilateral triangle. Apodemes of aedeagus long, slightly longer than the part from bridge to apex of aedeagus, almost parallel. Bridge of aedeagus inconspicuously developed. Tegmen ( Fig. 61 ) robust, moderately wide, with strongly sclerotized basal piece, apodeme of tegmen wide, straight, shorter than body of tegmen. Apex of tegmen moderately broad, almost bare. Structure of internal sac as in Fig. 60 . Segment VIII ( Fig. 57 ) moderately sclerotized, longer than wide, trapezoidal, anterior part wider than basal part, anterior margin of tergite VIII slightly sinusoidal outside. Sternal lobes of sternite VIII very small, irregularly triangular. Apodeme of sternite VIII present, but indistinct. Sternite IX (= spiculum gastrale) ( Fig. 58 ) with symmetrical divergent arms, apodeme straight. Length of apodeme ca. 2.75x as long as arms.

Distribution. Brazil ( Jordan 1904, Rheinheimer 2004), Ecuador, Bolivia.

Figures

FIGURES 43–48. Piezonemus durus Jordan, 1904, lectotype male (BMNH); 43, dorsal habitus; 44, head in dorsal view; 45, pronotum in dorsal view; 46, pygidium; 47, right antenna in dorsal view; 48, lateral habitus. Scale bars in mm.

FIGURES 49–55. Piezonemus durus, male (MTDC); 49, dorsal habitus; 50, head in dorsal view; 51, pronotum in dorsal view; 52, left antenna in dorsal view; 53, right mesotibia and mesotarsus; 54, pygidium; 55, lateral habitus. Scale bars in mm.

FIGURES 56–61. Piezonemus durus, male (MTDC), dissected terminalia; 56, pygidium; 57, segment VIII in ventral view; 58, sternite IX (= spiculum gastrale) in ventral view; 59, aedeagus in dorsal view; 60, internal sac of aedeagus in dorsal view; 61, tegmen in ventral view.

FIGURES 68–72. 68–69, Piezonemus lateralis, male (BMNH): 68, dorsal habitus; 69, left mesotarsus; 70–72, Piezonemus durus, paralectotype female (BMNH): 70, last abdominal ventrite (V) and pygidium in ventral view; 71, ditto in lateral view; 72, lateral habitus. Scale bars in mm.

FIGURES 101–104. Original labels. 101, Barridia corticina; 102, Piezonemus durus; 103, Piezonemus lateralis; 104, Piesocorynus lateralis (all in BMNH).