Chrysina woodruf, Sierra, José Monzón, 2017

Sierra, José Monzón, 2017, Four new species of Chrysina Kirby (Coleoptera: Scarabaeidae: Rutelinae) from Guatemala and Honduras, Insecta Mundi 2017 (543), pp. 1-12 : 6-7

Chrysina woodruf fi Monzón, new species

( Figures 7, 8 , 12, 16 , 20, 24, 26, 30 , 38, 39, 43 )

Type material. Holotype male ( UVGC) labeled “ GUATEMALA, Huehuetenango, San Mateo Ixtatán , 2 km norte de Bulej. Bosque nuboso. 1990 m. 15.960728 -91.569280. 18 AGOSTO 2010. Col. Monzón y Camposeco”; on red paper, “ HOLOTYPE Chrysina woodruffi Monzón ” . Paratypes (4 males and 3 females) with data as follows: Same data as holotype except (1 male and 2 females) ; same data except “ 4 AGOSTO 2011, Col. Camposeco y Monzón” (1 male); same data except “ 12 JULIO 2011 ” (1 male and 1 female); same data except “20 de JULIO 2012 ” (1 female); same data except “ 27 julio 1998. Cristina Bailey, Enio Cano y Jose Monzón Col. ” (1 male). All paratypes with label, on yellow paper “ PARATYPE Chrysina woodruffi Monzón ” . Paratypes deposited in the FSCA, JMS and THS collections.

Description. Holotype male. Length 30.0 mm; width at elytral humeri 14.0 mm; maximum width (middle of elytra) 16.5 mm. Dorsal surface of head, pronotum and elytra yellowish green ( Fig. 7 ); lateral sides of clypeus reddish yellow; antennal club dark reddish brown, scape dorsally golden green with reddish reflections; pronotal margins and scutellum yellowish green with red reflections. Venter yellowish green with reddish reflections ( Fig. 8 ); mentum, underside of mandibles, lateral lobules of mentum, procoxae, propleura, apex of mesometasternal protrusion and prosternal process orange to greenish orange; meso and metatrochanters, apex of abdominal coxae, external margins of mesosternum and metacoxae, internal margins of meso and meta femora and tibiae, and distal margin of first sternite reddish orange; pygidium similar in color to elytra but with a slight reddish tint and metallic reddish orange on lateral margins; tarsi bluish silver. Clypeus ( Fig. 12 ) free margins semicircular in dorsal view, slightly reflexed; surface with fine punctures; interocular distance 2.5 wider than antennal club length. Mentum ( Fig. 16 ) quadrate; anterior depression lightly divided in two wide segments; lateral depressions slightly marked; posterior margin almost straight; surface setigerously punctate, punctures scattered and large. Pronotum at base 2.4 times as wide as interocular distance; sculpture similar to frons. Lateral margin completely beaded, slightly effaced between inner borders of eyes and almost inexistent in front of scutellum. Elytra smooth, striae with sparse and fine punctures, intervals weakly convex. Elytron 21.0 mm long and 3.0 times as long as pronotum; lateral margin completely beaded, except close to pygidium. Pygidium finely punctate with one row of sparse, fine, pale setae along external margin ( Fig. 20 ); surface moderately convex and prominent towards apex. Venter with mesometasternal protrusion ( Fig. 24 ) small and slightly extending past mesofemoral base, rounded, slightly depressed. Metasternum very slightly expanded (maximum height at coxae 12.0 mm), punctate, setae dense, short and pale. Apical sternite with depression. Legs with protibiae tridentate, apical teeth medium, second longer and third very small. Metatrochanter with apex protruding beyond metafemoral margin ( Fig. 26 ); hind femora slightly enlarged and widened (4.0 mm maximum width); apical spine moderately produced ( Fig. 30 ); hind tibia very slightly curved. Genitalia dark reddish brown with parameres symmetrical, apically constricted and recurved, fused except for apical fifth of its length, apex narrow and bidentate; length of genital capsule 10.0 mm ( Fig. 38, 39 ).

Female. Similar to male except body more convex; tarsi slightly less robust; epipleural fold wide, terminating in sulcus; hind tibiae straight and apical sternite not depressed. Length 31.0 mm: width at elytral humeri 14.5; maximum width 19 mm (at epipleural fold). Inferior genital plates simple ( Fig. 43 ), slightly asymmetrical; distal margin crenulated with sparse medium setae (based on female with database label “JMS9746”).

Variation. The type series has very little variation, which is of interest as many species of the group show marked variation, especially in the male development of the metasternum and hind legs. Males: length 30.0–31.0 mm; width at elytral humeri 14.0– 15.5 mm; maximum width 16.5–18.0 mm; mesosternum height at posterior coxae 12.0– 13.5 mm. Females: length 31.0–33.0 mm; width at elytral humeri 15.0–16.0 mm; maximum width 18.0–19.0 mm (at epipleural fold). Two male specimens show reddish purple on the ventral coloration.

Etymology. I am proud to name this species for Robert Woodruff, great friend, great entomologist and great collecting partner in many unforgettable expeditions. Some of his invaluable work includes founding the CSE (Center for Systematic Entomology) in 1986 and starting Insecta Mundi (with Ross Arnett) when he was CSE first president. Currently he is still supporting the collection, increasing the number of beetles by hundreds of thousands since he retired and has been named Emeritus Beetle Taxonomist.

Diagnosis. This is one of the seven species in the macropus group in Central America, including the two described in this publication. From these, only C. baileyana Monzón , C. triumphalis Morón and C. woodruffi have the metatrochanter protruding beyond the metafemoral margin. Of the first two, C. woodruffi differs in that the males don’t have hypertelic development on hind legs and metasternum. The most similar species is C. baileyana but differs in the shape of the male genitalia, apex of metatrochanter ( Fig. 27 ) and shape of the apical spine in posterior femora ( Fig. 31 ). Chrysina halffteri sometimes has a slightly produced metatrochanter beyond metafemoral margin but triangular compared to C. woodruffi , which is well produced beyond metafemoral margin and square in shape.

Distribution and remarks. This species is currently known only from two kilometers north of Bulej in Huehuetenango department ( Fig. 44 ). It has taken many years to collect the type series and most collecting trips don’t produce specimens. Chrysina woodruffi is a very rare or difficult to collect species. Limited access, local idiosyncrasy and deforestation make it very difficult to find other potential sites for this species.

Figures

Figure 44. Distribution map for Chrysina alexae n. sp., C. antonkozlovi n. sp., C. maishei n. sp. and C. woodruffi n. sp. in Guatemala and Honduras.

Figures 1–8. Dorsal and ventral habitus of adult Chrysina specimens (1x). 1–2) C. alexae holotype from Purulhá, Baja Verapáz, Guatemala. 3–4) C. antonkozlovi male paratype from Cerro Minas, Lempira, Honduras. 5–6) C. maishei holotype from El Güisayote, Ocotepeque, Honduras.7–8) C. woodruffi holotype from Bulej, Huehuetenango.

Figures 9–16. Chrysina spp. structures. 9–12) Clypeus of males. 9) C. alexae. 10) C. antonkozlovi. 11) C. maishei. 12) C. woodruffi. 13–16) Mentum of males. 13) C. alexae. 14) C. antonkozlovi. 15) C. maishei. 16) C. woodruffi.

Figures 17–31. Chrysina spp. structures. 17–20) Pygidium of males. 17) C. alexae. 18) C. antonkozlovi. 19) C. maishei. 20) C. woodruffi. 21–24) Mesometasternal protrusions of males. 21) C. alexae. 22) C. antonkozlovi. 23) C. maishei. 24) C. woodruffi. 25–27) Male metatrochanter. 25) C. alexae. 26) C. woodruffi. 27) C. baileyana. 28–31) Males metafemoral apical spine. 28) C. alexae. 29) C. karschi. 30) C. woodruffi. 31) C. baileyana.

Figures 32–43. Chrysina spp. genital structures, scale in mm. 32–39) Male genital capsule dorsal (d) and ventral (v) habitus. 32) C. alexae (d). 33) C. alexae (v). 34) C. antonkozlovi (d). 35) C. antonkozlovi (v). 36) C. maishei (d). 37) C. maishei (v). 38) C. woodruffi (d). 39) C. woodruffi (v). 40–42) Female inferior genital plates. 40) C. alexae. 41) C. antonkozlovi. 42) C. maishei. 43) C. woodruffi.