Gromphas amazonica Bates, 1870

Figueroa, Luis, Edmonds, W. D. & Meza-Velez, Felipe, 2012, The genus Gromphas Brullé, 1837 in Peru (Coleoptera: Scarabaeidae: Scarabaeinae: Phanaeini), Insecta Mundi 2012 (248), pp. 1-8 : 3-4

publication ID

https://doi.org/10.5281/zenodo.5174634

persistent identifier

https://treatment.plazi.org/id/0393FE3E-FFA0-FFFB-E4ED-FA708799FE7E

treatment provided by

Felipe

scientific name

Gromphas amazonica Bates, 1870
status

 

Gromphas amazonica Bates, 1870

( Fig. 3-4, 12-13, 19-23)

Diagnosis. Length 12-18 mm. Dorsum shining black with weak dark green to blue highlights ( Fig. 3-4). Clypeal margin slightly expanded and upturned near notch ( Fig. 12, arrow), not evenly curved. Head of both sexes with a weakly bituberculate, median gibbosity, never with a conical horn ( Fig. 12). Pronotum of both sexes evenly convex, lacking any trace of a median prominence ( Fig. 3-4). Pronotum densely and finely granulate, granulation becoming almost effaced posteromedially. Inner apical angle of male protibia drawn out into an acute spine ( Fig. 20, arrow); outer edge of protibial spur of both sexes strongly expanded subapically ( Fig. 20-21). Apical protarsal segment prolonged apically ( Fig. 19).

Geographical Distribution. ( Fig. 5) Recorded from Brazil, Colombia and Peru. In Peru known from isolated localities in Amazonian lowlands of Loreto, San Martin and Ucayali. Peruvian collecting data: LORETO: Prov. Ucayali, Distr. Padre Marquez, CCNN Santa Ana (7 o 52’S, 75 o 31' W) 224 m [Oct] MUSM GoogleMaps ; Contamana (7 o 21’S, 75 o 01’W) 134 m [Dec] MUSM, WDEC. SAN MARTIN: Prov. El Porvenir GoogleMaps ,

Bosque El Pelejo (6 o 16’S, 75 o 50’W) 161 m [May] MUSM. UCAYALI: Prov. Coronel Portillo, Pucallpa (8 o 25’S, 74 o 28’W) [Aug] MUSM, (8 o 22’S, 74 o 34’W) [Jul-Aug, Dec] CMNC.

Ecology. The ecology of this species is not understood. Specimens examined with precise data were collected with pitfall traps baited with human feces in forest habitats; in one case, several individuals were found in secondary growth associated with mandioca cultivation (cassava, “yuca”; Manihot esculenta Crantz ). Trond Larsen (pers. comm.) points out the possibility that it may be a narrow ecological specialist; he has not collected G. amazonica during several years of intensive collection and ecological monitoring of the dung beetle fauna in Madre de Díos (southeastern Peru).

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Scarabaeidae

Genus

Gromphas