Systematics of Robustagramma, a new genus of New World Sphaeroceridae (Diptera) Author Marshall, Stephen A. Author Cui, Yongsheng text Zootaxa 2005 2005-07-29 1026 1 1 122 https://biotaxa.org/Zootaxa/article/view/zootaxa.1026.1.1 journal article 10.11646/zootaxa.1026.1.1 1175­5334 5049813 3EDC6787-C73B-4969-BA06-022D0532364F Robustagramma crassisaccus Cui and Marshall , new species ( Figs. 192–199 ) As described for Robustagramma biangulatum except as follows. Body length 1.6–2.0 mm. Facial ridge of male with width between antennae similar to width of scape; facial ridge of female distinctly broader between antennae than width of scape. Eye height ca . 2.7 times genal height. Mid femur of male with a row of strong anteroventral setulae in addition of over 10 ventral proximal bristles. Male terminalia: Sternite 5 with 3–4 pairs of stout bristles. In lateral view, posteroventral margin of surstylus rounded. Ejaculatory apodeme ca . 1/3 as long as aedeagal apodeme. In anteroventral view, distiphallus with distal dorsal sclerites conspicuously extended outwardly. Female terminalia: Spermathecae distinctly short and thick; single spermatheca with distal portion similar in length to basal portion; paired spermathecae with ducts nearly twice length of spermatheca. Holotype ( ♂ , DEBU ) and paratypes ( 3 ♀ , DEBU ): VENEZUELA : Bolívar . Evergreen Dry Forest , FIT, vi– 12.vii.1987 , S. & J. Peck. Other paratypes : GUYANA : Rupununi Dist. , Kurupukari , Essequibo R. , 200ft , primary rainforest, dung traps , 9.x.1990 , B. Hubley ( 6 ♂ , 3 ♀ , DEBU ) ; Kurupukari, E. side Essequibo R. , primary rainforest edge/field, malaise trap , 7–11.x.1990 , B. Hubley and L. D. Coote ( 1 ♀ , DEBU ) . VENEZUELA : Bolívar . 8 km N Guri , 200m , 16.vii–11.viii.1986 , B. Gill ( 1 ♂ , DEBU ) . Etymology: The specific epithet refers to the short, thick spermathecae of this species. Comments: Robustagramma crassisaccus is identical to Robustagamma ovipennis (Duda) in many details, even in shapes of surstylus and cercus. Robustagramma crassisaccus , however, differs in the form of male sternite 5, having 3–4 pairs of short, stout bristles. Furthermore, the distal sclerite of the distiphallus of R. crassisaccus lacks medial spicules.