Robustagramma brevicilium Cui and Marshall, 2005

Marshall, Stephen A. & Cui, Yongsheng, 2005, Systematics of Robustagramma, a new genus of New World Sphaeroceridae (Diptera), Zootaxa 1026 (1), pp. 1-122 : 21

Robustagramma brevicilium Cui and Marshall , new species

( Figs. 9–12 )

As described for Robustagramma longiseta except as follows.

Male: Body length 2.1 mm. General color yellow to reddish yellow; lightly pollinose, without conspicuous pigmentation. Face, gena and lower frons yellow; antenna and upper frons reddish yellow. Anterior orbital bristle ca. 3/5 as long as posterior. Postocellar bristles present, half as long as postvertical bristle. Eye height ca. 2 times genal height. Aristal hairs short, ca. 1.5 times basal width of arista. Preapical palpal bristles ca. 1.8 times as long as greatest width of palpus.

Dorsocentral bristles in 4 (2 presutural and 2 postsutural) pairs, anterior presutural dorsocentral bristle distinctly longer than acrostichal setulae. Acrostichal setulae in 6 rows between anterior postsutural dorsocentral bristles. Posterodorsal katepisternal bristle 3/4 as long as distance between bristle base and wing base. Second to third costal sector ratio ca. 0.37. Costa extends past R 4+5 by one vein width. Discal cell with a 1–2 vein widths long stump of vein CuA 1. Legs yellow. Mid tibia with a strong, additional, anterodorsal setula at distal 1/4 just basal to anterodorsal distal bristle. Mid femur with 10 weak ventral bristles on basal half.

Sternite 5 with a row of 12 long, depressed bristles, 2 rows of 8 short, stout bristles, and 2 semilunar posterolateral flanges; without a hemispherical posteromedial protuberance. Ejaculatory apodeme 0.25 times as long as aedeagal apodeme.

Female: Unknown.

Holotype (♂, DEBU): PANAMA: Chiriquí. Lagunas , 5 km SW Hato del Volcán, 1360m, dung, 22–26.v.1977, S. Peck.

Etymology: The name brevicilium refers to the short aristal hairs.

Figures

FIGURES 9–12. Robustagramma brevicilium sp. nov.: 9, posterior view of male terminalia; 10, lateral view of male terminalia; 11, lateral view of male internal genitalia; 12, male sternite 5.