Poecilantrops psilosternum, KITS & MARSHALL, 2013

KITS, JOEL H. & MARSHALL, STEPHEN A., 2013, <p class = " HeadingRunIn " align = " left "> <strong> Generic classification of the Archiborborinae (Diptera: Sphaeroceridae), with a revision of <em> Antrops </ em> Enderlein, <em> Coloantrops </ em> gen. nov., <em> Maculantrops </ em> gen. nov., <em> Photoantrops </ em> gen. nov., and <em> Poecilantrops </ em> gen. nov. </ strong> </ p>, Zootaxa 3704 (1), pp. 1-113 : 102-103

Poecilantrops psilosternum sp. nov.

( Figs. 12 , 189, 192 , 237 )

Description. Head orange, occiput black, prementum and maxillary palp yellow. Orbital plates, most of frontal triangle (except adjacent to ocellar triangle and a strip between ocellar bristles), gena and occiput covered with microtomentum, face with a band of microtomentum below antenna. Ocellar bristles just anterior to median ocellus. One subvibrissal and anterior genal bristle enlarged, about 0.5X length of vibrissa.

Thorax black, with extensive microtomenutm. Proepisternum, anteroventral patch covering about quarter of anepisternum, katepisternum, meron and metapleuron except stripe between posterior spiracle and hind coxa shiny. Halter yellow. Acrostichal bristles in 6 rows.

Fore leg with coxa, trochanter, and femur orange, tibia and basal 2 tarsomeres dark brown, distal 3 tarsomeres whitish. Mid leg orange, coxa and basal two-thirds of femur black. Hind leg orange, basal two-thirds of femur black, distal half of tibia brown. Mid tibia with anterior row of anterodorsal, 0–2 posterodorsal, 1 anteroventral, 1 posteroventral, 4–5 subapical bristles. Hind tibia with 2 ventroapical bristles, length of longest about 1.25X width of tibia.

Wing light brown, white spots on crossveins r-m, bm-cu, dm-cu, at tip of vein R 2, on vein R 4+5 with 1 basal to rm, 2 distal to r-m, 1 at tip, 1 at tip of vein M, 2 on vein CuA 1 basal to dm-cu.

Abdominal tergites black, covered with microtomentum. Syntergite 1+2 with a median ridge. Tergite 3 fused to tergite 2. Anterior margin of tergite 4 irregularly excavated. Sternites irregularly sclerotized in male, weakly sclerotized in female.

Male postabdomen: Sternite 5 with external portion rectangular, longer than wide, shallowly emarginated posteriorly, 2 divergent anterior apodemes, each about half as long as external portion ( Fig. 192 ). Surstylus bootshaped, scooped. Pregonite small, distinct. Postgonite with anterior lobe very broad, rounded, posterior lobe narrow, pointed. Basiphallus swollen, with a smooth dorsal tube flanked by a single spike-like sclerite, ventral projection short ( Fig. 189 ).

Female postabdomen: Tergites 6–7 and sternites 6–7 very wide, moderately sclerotized, covered with microtomentum, tergite 6 with round, weakly sclerotized, lateral patches. Tergites with 3 posterior strips, sternites with 2 posterior strips. Tergite 8 broad, shallowly emarginated anteriorly, anterior margin shiny. Epiproct nearly circular, anterior arms broad and very short, microtomentum on posterior half, with 1 pair of setae. Cerci broad, fairly long. Sclerites of sternite 8 broad, subrectangular, nearly reaching tergite 8 laterally, anterior third with irregular margin, shiny, posterior two-thirds covered with microtomentum. Hypoproct broad, lozenge shaped, anterior margin shiny with a slight notch. Spermathecae relatively large, round, not invaginated, sclerotized duct about as long as spermathecae.

Type material. Holotype ♂: BRAZIL: Sao Paulo: Barueri , 6 Aug 1955, K. Lenko, debu01039083 ( MZSP) . Paratypes: Paraná: Pinhais , 6 Apr 1985, S. José (1 ♀, DZUP) ; Rio de Janeiro: Nova Friburgo, 10 km S Sitio Edelweiss, Muri , malaise head, 1–28 Feb 1990, S.A. Marshall (1 ♀, DEBU) ; Teresópolis , "88-137" (1 ♂, BMNH) ; Santa Catarina: Nova Teutônia , 27°10'S 52°22'W, 300–500 m, 11 Sep 1939, F. Plaumann (1 ♂, AMNH) .

Comments. The species name is derived from the Greek psilos (bare) + sternon (breast), referring to the bare katepisternum, which distinguishes this species in part from the similar P. crocidosternum .

Figures

FIGURES 7–12. Archiborborine adults, habitus photos: (7) Antrops truncipennis, female, Bird Island, South Georgia Islands; (8) A. siberia, male holotype, Yungas de la Siberia, Bolivia; (9) A. tetrastichus, male paratype, Quito–Baeza pass; (10) Photoantrops echinus, male holotype, SierrAzul Lodge, Ecuador; (11) Coloantrops daedalus, female paratype, Laraquete, Chile; (12) Poecilantrops psilosternum, female paratype, Nova Friburgo, Brazil.

FIGURES 189–194. Poecilantrops male terminalia. (189) P. psilosternum, phallus, postgonite, and phallapodeme, lateral view; (190) P. stellans, phallus, postgonite, and phallapodeme, lateral view; (191) P. vittifrons, phallus, postgonite, and phallapodeme, lateral view; (192) P. psilosternum, sternite 5; (193) P. stellans, sternite 5; (194) P. vittifrons, sternite 5.

FIGURES 231–239. Archiborborine distribution maps. (231) Maculantrops hirtipes; (232) Photoantrops echinus; (233) Poecilantrops baorucensis (stars), P. dominicus (circles); (234) P. stellans; (235) P. boraceiensis (circles), P. plaumanni (stars); (236) P. crocidosternum; (237) P. psilosternum; (238) P. flavifemur; (239) P.marensis (circles), P. vittifrons (stars).