Hylcalosia yongjingzengi Yao, 2021

Li, Jimin, Wang, Lingmin, Chen, Jiahua, Yu, Shenkai & Yao, Junli, 2021, A new species of the genus Hylcalosia from China (Hymenoptera: Braconidae: Alysiinae), Zootaxa 5040 (2), pp. 289-295 : 291-293

Hylcalosia yongjingzengi Yao n. sp.

Figure 1 (A–H)

urn:lsid:zoobank.org:act:94441D64-3A66-43AB-A779-0F3284156090

Diagnosis. Body bicolor, head reddish brown except palpi brown; antennae, eyes, ocelli, apical edge of mandible dark brown, fore legs brownish-yellow to black, the reminder almost completely black ( Fig. 1A ); eye glabrous ( Fig. 1D ); epicranial seam weak; frons with a crenulated longitudinal median groove; notauli present in anterior half of mesoscutum, deep and weakly crenulated, absent in middle part and shallow in posterior half, as wide as mid pit, ( Fig. 1F ); mid pit crenulated, present in posterior 0.4 of mesoscutum ( Fig. 1F ); scutellar sulcus deep and smooth, with six carinae ( Fig. 1F ); apical 1/6 of propodeum smooth, with a short mid-longitudinal carina, remainder with coarse and dense cellular sculpture ( Fig. 1F ); precoxal sulcus incomplete, wide and deep, coarsely rugose-reticulate entirely ( Fig. 1H ); vein m-cu of hind wing weakly antefurcal, vein 1cu-a of fore wing weakly interstitial ( Fig. 1B ); T1 to T3 with coarse and dense reticulate areolae entirely, except slightly punctured between dorsal carinae ( Fig. 1G ).

Description. Holotype, ♀, length of body 7.1 mm; length of fore wing 5.7 mm.

Head. 2.0 × wider than its median length (in dorsal view), 1.7 × wider than mesoscutum. Head at level of temples weakly narrower than head at level of eyes (in dorsal view) ( Fig. 1D ). Eye glabrous, 0.9 × longer than temple (in dorsal view) ( Fig. 1D ). Vertex and temple smooth ( Fig. 1E ); vertex with sparse pale setae laterally; epicranial seam weak ( Fig. 1E ). Frons with a longitudinal crenulated groove medially, mainly smooth, rugose near antennal sockets and densely punctate laterally. Ocellar area with a longitudinal crenulated groove, remainder smooth and glabrous ( Fig. 1D ). Face 3.1 × wider than its median height, entirely with dense and coarse rugose-reticulate sculpture ( Fig. 1C ). Clypeus subtriangular and protruding, densely and finely reticulate-punctate, width of clypeus 1.3 × its median height, 0.3 × width of face ( Fig. 1C ). Mandible widening toward sub-apex, mandible 2.1 × longer than distal width ( Fig. 1D ). Maxillary palps 6-segmented, 1.8 × longer than height of head. Antennae slender, filiform, with 64 antennomeres, 1.7 × longer than fore wing; scape distinctly flattened; F1 widest, 1.6 × longer than its maximum width, 0.7 × as long as F2; F2 2.7 × longer than apical width.

Mesosoma. 1.6 × longer than high (in lateral view). Mesosoma mainly glabrous, with dense and short pale setae anteriorly and laterally; with sparse pale setae along notauli ( Fig. 1F ). Pronope deep and wide. Mesoscutum smooth, densely punctate anteriorly and crenulated laterally, its length 0.9 × as long as maximum width. Notauli present in anterior half of mesoscutum, deep and weakly crenulated, absent in middle part and shallow in posterior half, as wide as mid pit ( Fig. 1F ). Mid pit present in posterior 0.4 of mesoscutum, deep, linear and crenulated ( Fig. 1F ). Scutellar sulcus with six carinae, deep and smooth ( Fig. 1F ). Scutellum weakly convex and entirely smooth, with sparse setae, without lateral longitudinal carinae. Apical 1/6 of propodeum smooth, with a short longitudinal median carina, remainder entirely with coarse and dense rough cellular sculpture ( Fig. 1F ). Metanotum with a low mid longitudinal carina (in dorsal view), not flange-like (in lateral view) ( Fig. 1H ). Mesopleuron mostly densely hairy. Precoxal sulcus incomplete, wide and deep, entirely coarsely rugose-reticulate, connected to lower margin of subalar depression ( Fig. 1H ). Subalar depression shallow and narrow, coarsely rugose-reticulate ( Fig 1H ). Propodeal spiracles small and round.

Wings. Fore wing ( Fig. 1B ): 2.8 × longer than wide. Pterostigma long and narrow, 5.7 × longer than its maximum width. Marginal cell not shortened. Vein r arising distinctly around posterior 0.7 of pterostigma, length of vein r 1.2 × width of pterostigma. Vein 3RSa 2.0 × longer than vein r, 0.3 × as long as vein 3RSb, 0.6 × as long as vein 2RS. 2nd submarginal cell 2.7 × longer than wide, 1.8 × longer than 1st subdiscal cell. Vein 1m-cu interstitial, vein 1m-cu and vein 1M unparalleled. Vein 1cu-a weakly interstitial, distance between vein 1M and vein 1cu-a much shorter than length of vein 1cu-a. 1st subdiscal cell not widening toward apex. Vein 2Cua: vein 2cu-a = 4: 3. Hind wing ( Fig. 1B ): 4.2 × longer than its maximum width. Vein 1r-m 0.7 × as long as vein 1M. Vein M+CU 1.7 × longer than vein 1M. Vein m-cu of hind wing weakly antefurcal.

Legs. Hind femur 5.3 × longer than its maximum width. Hind tarsus 1.2 × longer than hind tibia. Hind basitarsus 0.8 × as long as second-fifth segments combined. Second segment of hind tarsus 0.5 × as long as basitarsus, 1.8 × longer than fifth segment (without pretarsus) ( Fig. 1A ). Hind femur 0.8 × longer than hind tibia, hind femur 1.7 × longer than hind basitarsus.

Metasoma. 2.0 × longer than its maximum width (in dorsal view), 0.8 × as long as head and mesosoma combined. Metasoma weakly widened until apex of T2, then weakly narrowed, apical segments not protruding behind T3 ( Fig. 1G ). T1 widened from base to apex distinctly, dorsope wide and protruding, dorsal carinae fused in basal 0.5; length of T1 1.1 × longer than its apical width and apical width 2.3 × longer than its basal width ( Fig. 1G ). Median length of T2 0.7 × its basal width, 0.6 × as long as apical width, 0.8 × longer than T3; second suture distinct, narrow and deep ( Fig. 1G ). T3 serratulate along apical margin ( Fig. 1G ). T2 and T3 with separated laterotergites ( Fig. 1G ). T1 to T3 entirely coarsely and densely reticulate-areolate, except slightly punctured between dorsal carinae ( Fig. 1G ). Ovipositor sheath slender, 1.1 × longer than metasoma, 1.2 × longer than mesosoma, 0.6 × as long as fore wing ( Fig. 1A ).

Color. Body bicolor, head reddish brown except palpi brown. Antennae, eyes, ocelli, apical edge of mandible dark brown. Fore legs brownish yellow to black, the reminder almost completely black. Tegula black. Fore wing faintly infuscate; veins almost dark brown. Pterostigma entirely black, only basal part slightly light brown.

Male. Unknown.

Material examined. Holotype, ♀, Fujian, Wuyi Mountain Nature Reserve, Nanding Keng ; 27°43′2″N, 117°38′52″E, elevation 1128 m, Malaise trap, IX. 10. 2019 – X. 02. 2019, Junli YAO. Biology. Unknown. Etymology. Named in honor of Yongjing Zeng husband of the corresponding author, who has given support for this work and helped in collecting specimen.

Figures

FIGURE 1. Hylcalosia yongjingzengi Yao n. sp., A. lateral habitus, B. wings, C. anterior head, D. dorsal head, E. lateral head, F. dorsal mesosoma, G. dorsal metasoma, H. lateral mesosoma.