Compsodactylus parvulus ( Frey, 1970 ) Frey, 1970

Fuhrmann, Juares, 2012, Compsodactylus, a new South American genus with one new species and two new combinations (Coleoptera: Scarabaeidae: Melolonthinae), Zootaxa 3577 (1), pp. 43-57 : 46-47

Compsodactylus parvulus ( Frey, 1970) new combination

( Figs. 5, 6 , 11 , 36, 38 , 74 , 76 )

Dicrania parvula Frey 1970: 287 ; 1972: 69; Evans 2003: 266 (catalog); Evans & Smith 2005: 224 (catalog); 2007: 226 (catalog); 2009: 229 (catalog).

Diagnosis. Body slightly flattened dorsoventrally, without green reflection; clypeus without denticle-like setae; elytral striae shallowly and irregularly punctate.

Description. Body ( Figs. 5, 6 ) fusiform in dorsal view, slightly flattened dorsoventrally; length 5.5 mm; width 3.2 mm at the middle of elytra. Color dark brown; elytra pale at apex. Head ( Fig. 11 ) width 1.2 mm. Width of eye in dorsal view about 6.6 times narrower than interocular area. Epistomal suture straight. Frons and clypeus with and without denticle-like setae, respectively. Pronotum length 1.5 mm, width 1.8 mm. Protarsal claws with similar teeth. Scutellum 1.8 times narrower than anterior elytral margin. Elytral striae shallowly and irregularly punctate. Posterior wing with AP3+4 inconspicuous. Female metafemur ( Figs. 36, 38 ) slightly enlarged, without modified setae. Female terminalia ( Fig. 74 ). Proctiger indistinct; paraprocts membranous; membranous lobe wide. Gonocoxite pieces connate; proximal piece large, smooth, glabrous; distal pieces elongate, internal and apical margins setose.

Discussion. Male unknown. Compsodactylus parvulus can be distinguished from the other two species in the genus by the dorsoventrally flattened body, clypeus without denticle-like setae, and elytral striae shallowly and irregularly punctate. Compsodactylus parvulus and C. scabrosus have similar size, gonocoxite pieces connate, gosnostyle absent, however the gonocoxite distal piece in C. parvulus is longer than in C. scabrosus .

Distribution ( Fig. 76 ). The holotype of C. parvulus was collected in Coari, 3000 m, a locality of Cochabamba Province, next to Parque Nacional Carrasco, in the eastern Bolivian Andes.

Type Series. Frey (1970) described the species based in a simple specimen erroneously identified as male. Labels: [ Bolívia | Cochabamba | Coari, 3.000 m || or. Zischka | 500m] [Type] {red label} [♀] [ Dicrania | parvula | det. Frey 1970 | sp. n.] [ Compsodactylus parvulus | ( Frey, 1970) | det. J. Fuhrmann 2012]. The holotype has right flagellum, left wing and external genitalia detached; left flagellum, right protarsomeres III–V lost.

Material examined. BOLIVIA, COCHABAMBA: Cochabamba, Coari , 3,000 m, Zischka (collector), ♀ (holotype) ( NHMB) .

Figures

FIGURE 76. Compsodactylus species geographic distribution.

FIGURES 1 – 9. 1, 2, 4, Compsodactylus martinezi male habitus (dorsal, lateral, head dorsolateral); 3, C. martinezi female habitus (lateral; arrow shows the posterior margin bordered); 5, 6, C. parvulus holotype female habitus (dorsal, lateral); 7, 8, C. scabrosus holotype male habitus (dorsal, lateral); 9, C. scabrosus female habitus (lateral).

FIGURES 10 – 16. 10, Compsodactylus scabrosus head (dorsal); 11, C. parvulus head (dorsal); 12 – 16, C. martinezi; 12, head (dorsal); 13, epipharynx with details; 14, antenna; 15, hypopharynx; 16, labium.

FIGURES 28 – 39. 28 – 35, 37, Compsodactylus martinezi; 28 – 30, prothorax (frontal, posterior, ventral); 31, detail of hypomeron posterior arm; 32, male protarsomere I (internal); 33, male protibia and protarsus; 34, male mesotibia and mesotarsus; 35, male metafemur, metatibia, and metatarsus; 36, C. parvulus female metaleg; 37, C. martinezi male tibial apex; 38, C. parvulus female tibial apex; 39, C. scabrosus male tibial apex.

FIGURES 63 – 75. 63 – 69, Compsodactylus martinezi; 63, male genital ring; 64, aedeagus (lateral); 65, parameres (dorsal); 66, parameres (ventral); 67 – 69, endophallus (lateral), ventral basis detail, ornamentation detail; 70 – 71, C. scabrosus; 70, aedeagus (lateral); 71, parameres (dorsal); 72 – 73, C. martinezi; 72, female terminalia and internal associated region (ventral); 73, female external genitalia; 74, C. parvulus female external genitalia; 75, C. scabrosus female external genitalia. acg, accessory gland; bcx, bursa copulatrix; dgx, gonocoxite distal piece; gst, gonostylus; ovd, oviduct; pgx, gonocoxite proximal piece; ppt, paraproct; sga, spiculum gastrale caudal piece; sgc, spiculum gastrale caudal piece; spt, spermatecae; stg, spermatecae gland; ut 9, urosternite; tem, temones.