Andesipolis compressithorax Shimbori & Penteado-Dias

Mitio, Shimbori Eduardo, Souza, Souza-Gessner Carolina Da Silva, Maria, Penteado-Dias Angelica & Richard, Shaw Scott, 2017, A revision of the genus Andesipolis (Hymenoptera: Braconidae: Mesostoinae) and redefinition of the subfamily Mesostoinae, Zootaxa 4216 (2), pp. 101-152 : 125-126

Andesipolis compressithorax Shimbori & Penteado-Dias sp. n.

( Figs 92–97 )

Female. Body length 2.9 mm; fore wing length 3.2 mm.

Head. Punctate and mat, with moderately dense setae; head as wide as mesoscutum. Face 2.24x broader than long, smooth and polished. Clypeus 2.46x broader than long. Malar space 0.6x eye height in frontal view. In lateral view, eyes 1.26x as long as temple. Maximum width of lateral ocellus 0.41x ocell-ocular distance. Antenna 0.94x longer than fore wing, 25 segmented; first flagellomere 4.1x longer than wide.

Mesosoma . Compressed dorso-ventrally 2.5x longer than high. Mesonotum 1.1x longer than width of mesoscutum. Mesonotum flat dorsally; mesoscutum protruding anteriorly. Pronotum dorsally covered by protruding mesoscutum; laterally with crenulate pronotal groove, with scattered setae posteriorly and ventrally; mesoscutum densely setose over entire surface; scutellar sulcus with a line of scattered setae; scutellum setose over entire surface; notauli crenulate, not visible dorsally; mid pit long and narrow, 0.68x length of mesoscutum; scutellum 0.78x longer than wide, smooth and mat; scutellar sulcus 0.07x longer than wide, strongly crenulated; mesoscutellar trough dived into two portions by oblique carina, the proximal portion smooth and triangular, and distal portion rounded and rugose. Metanotum without median carina; laterally rugose with scattered setae. Mesopleuron mostly bare, with scattered setae concentrated on anterior corner and ventrally, few setae posteriorly; sternaulus crenulate, almost reaching epicnemial carina; anterior corner of mesopleuron smooth. Epicnemial carina present ventrally, incomplete. Metapleuron mostly rugose with mat surface, with long and scattered setae.

Propodeum rugose, with long median carina; areola absent anteriorly, posteriorly with two distinct cross-bridges and two pairs of transverse lateral carina. Hind coxa 1.7x longer than wide, 0.99x as long as metasomal TI. Hind basitarsus about 0.46x as long as hind tibia. Hind tarsal claws without basal lobe.

Wings. Fore wing. Stigma 3.7x longer than broad; vein r arising from middle of stigma. Vein r 0.84x longer than vein 3RSa. Vein 2RS straight, 1.12x longer than 3RSa. Second submarginal cell short, vein 3 RSa 0.26-0.46 x 3 RSb and 1.6x as long as vein r-m. Vein 1 Cub 1.4x vein 1CUa. Vein (RS+M)b distinct, not pigmented. Vein 1-1AC 0.4x longer than vein 2-1 A. Hind wing. Vein M +CU 1.97x longer than 1M. Vein cu-a 0.59x as long as 1M. Vein rm 0.72x as long as 1M.

Metasoma. TI 0.87x as long as apical width; rugose; dorsal carinae converging but not meeting, extending over half-length of tergum; dorsope deep and large. Metasoma beyond petiole weakly sclerotized; TII 1.56x longer than TIII. Ovipositor straight, 0.7x as long as hind tibia; ovipositor sheaths 0.6x longer than ovipositor.

Color. Dark red-brown. Face brown, darker centrally, mandibles honey yellow with brown teeth, palpi white. Propleuron and pronotum laterally orange-brown. Mesoscutum mostly orange-brown dorsally. Antenna light brown, darkening toward dark brown apex. Legs pale yellow. Metasoma beyond TI brown. Wings hyaline, veins brown, stigma white with brown borders.

Male. Unknown

Biology. Unknown

Comments. A. compressithorax sp. n. is a very distinct species due to its dorso-ventrally compressed mesosoma with flat mesonotum, being most of the proportions on this region quite different from other species. For instance, the scutellar sulcus is 0.07x longer than wide, as compared with 0.2–0.5 in other species, and the mesosoma is 2.5x longer than high, as compared with 1.6–2.0 in other species. The mesoscutum is projected forward, covering the pronotum dorsally, apparently as a result of the dorso-ventral compression of mesosoma . Another unique feature of this species is the oblique carina bisecting the mesoscutellar trough into two portions, with the proximal portion being smooth and the distal one rugose.

Distribution. Known only from type locality in Nuble, Chile, at 1,300 to 1,600 meters above sea level.

Etymology. The species is named in reference to its dorsoventrally compressed body.

Type material. Holotype, female ( CNC). “ CHILE Nuble / Las Trancas / 13–1600 m T’line / S & J. Peck Dec. 76 ”.

Figures

FIGURES 92 – 97. Andesipolis compressithorax sp. n.: 92, habitus; 93, face; 94, habitus, dorsal; 95, head and mesonotum, dorsal; 96, head and mesosoma, lateral; 97, propodeum and metasomal TI – III.