Two new species of Hybotidae from Bolivia with keys to the world species of Megagrapha (Diptera)


Ricevuto: 14 June 2012
Accettato: 14 June 2012
Pubblicato: 6 June 2012
Abstract Views: 486
PDF: 398
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Abstract - A new species of Megagrapha Melander, 1927 and a new species of Tachyempis Melander, 1927 are described. The genus Megagrapha is reported from the Neotropical region for the first time. Megagrapha boliviana n. sp. is related to M. pubescens (Loew,1862), from which it differs in having a yellow occipital region, a linear posterior margin along eye, in the shape of the flagellomere, 1 developed humeral seta, 2 notopleural setae, the different costal index of the wing, yellow first and second abdominal segments and other segments brown. Tachyempis bettellai n. sp. is related to T. gagatina Melander, 1927, from which it differs in having the wing entirely infuscate, yellow coxae, yellow fore and midlegs, hindleg with brown femur and apically brown tibia and the different costal index of the wing.

Riassunto - Due nuove specie di ditteri Hybotidae della Bolivia con chiave delle specie mondiali di Megagrapha (Diptera). Vengono descritte una nuova specie di Megagrapha Melander, 1927 e una nuova specie di Tachyempis Melander, 1927 della Bolivia. Il genere Megagrapha è nuovo per la Regione Neotropicale. Megagrapha boliviana n. sp. differisce dall’affine M. pubescens (Loew, 1862) per l’area occipitale gialla, il margine posteriore dell’occhio lineare, la struttura del flagellomero, la presenza di una setola omerale, 2 setole notopleurali, il primo e secondo segmento addominale gialli e gli altri bruni e per il differente indice costale dell’ala; Tachyempis bettellai n. sp. differisce dall’affine T. gagatina Melander, 1927 per le ali uniformemente imbrunite, le anche gialle, le zampe anteriori e mediane interamente gialle, il femore posteriore bruno e la tibia posteriore con l’apice bruno, nonché per il differente indice costale dell’ala.


Raffone, G. (2012). Two new species of Hybotidae from Bolivia with keys to the world species of Megagrapha (Diptera). Bollettino Della Società Entomologica Italiana, 144(1), 28–30. https://doi.org/10.4081/BollettinoSEI.2012.28

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