Darnilia intermedia Long & van Achterberg

Long, Khuat Dang & Achterberg, Cornelis Van, 2018, First record of the genus Darnilia van Achterberg, 1989 (Hymenoptera: Braconidae: Rogadinae) from Vietnam, with description of three new species, Zootaxa 4457 (3), pp. 455-464: 458-461

publication ID

https://doi.org/10.11646/zootaxa.4457.3.7

publication LSID

lsid:zoobank.org:pub:B78B6D76-7DE9-4D24-80B2-E07C271EA616

persistent identifier

http://treatment.plazi.org/id/002B87F3-FFC7-FFE3-FBE2-F935FD210F17

treatment provided by

Plazi

scientific name

Darnilia intermedia Long & van Achterberg
status

sp. n.

Darnilia intermedia Long & van Achterberg  , sp. n.

( Figs 12–22View FIGURES 12View FIGURES 13–22)

Material. Holotype, female, ‘ Rog. 1028’ ( VNMNAbout VNMN), NE. Vietnam: Tuyen Quang, Na Hang, Son Phu , forest, MT, 22°17’32.0’’N 105°28’19.9’’E, 573m, 5.vi.2017, KDLongGoogleMaps  . Paratypes: 5 females, ‘ Rog. 283’ ( IEBR), NW. Vietnam: Hoa Binh, Yen Thuy, Hang Tram , orchard, MT, 20°23’47’’N 105°36’14’’E, 55m, 1-10.ix.2002, KDLongGoogleMaps  ; ‘ Rog. 1029’ ( VNMNAbout VNMN), NE. Vietnam: Tuyen Quang, Na Hang, Son Phu , forest, MT, 22°17’32.0’’N 105°28’19.9’’E, 573m, 5.vi.2017, KDLongGoogleMaps  ; Rog. 1042’ ( VNMNAbout VNMN), Rog. 1043’ ( RMNHAbout RMNH), ibid. but 25.viii.2017, KDLongGoogleMaps  ; ‘ Rog. 1019’( IEBR), NE. Vietnam: Tuyen Quang, Na Hang, Son Phu , forest, MT, 22°17’32.0’’N 105°28’19.9’’E, 573m, 5.vi.2017, KDLongGoogleMaps  ; 3 females ( RMNHAbout RMNH, IEBR), N. Vietnam: Ninh Binh, Cuc Phuong N.P., [Malaise trap] in centre, c. 225 m, 29.vi.–18.vii.2000, Mai Phu Quy, RMNH’01  ; 1 female (RMNH), id., but 15.iii-14.iv.2000; 2 females (RMNH, IEBR), id., but 15-27.v.2000; 2 females (RMNH, IEBR), id., but 20.xii.1999 - 10.ii.2000; 2 females (RMNH, IEBR), id., but 18.vii-18.viii.2000; 1 female (IEBR), id., but 1.xi-20.xii.2000; 2 females (RMNH, IEBR), id., but 1-15.v.2000, Malaise trap near entrance; 1 female (RMNH), id., but 15-27.v.2000; 1 female ( RMNHAbout RMNH), C. Vietnam: Thua Thien Hué, Phong Dién N.R., near base camp, 15 km W of Phong My , 80-120 m, 23.iii-6.iv.2001, Malaise traps, C. v. Achterberg & R. de Vries, RMNH’01  ; 2 females ( RMNHAbout RMNH), C. Vietnam: Ha Tinh, Vu Quang N.P., 53 m, N 18°21’02’’ E105°26’34’’, 22.ix-6.x.2009, MalGoogleMaps  . trap 8 & 10, 53 m, 22.ix-6.x.2009, C. v. Achterberg & R. de Vries, RMNH’09; 2 females (RMNH, IEBR), id., but 135 m, Taiwan trap 16, N18°17’41’’ E105°25’36’’, 24.ix-5.x.2009.

Comparative diagnosis. Antenna long, apical antennomere acuminate; occipital carina more or less widely interrupted medio-dorsally; vein 1-M of fore wing slightly curved basally; vein cu-a oblique; vein 1-M of hind wing 1.7–2.2 × as long as vein M+CU; propodeum with short or medium-sized median carina; first metasomal tergite with median carina in 0.5 basal tergite, 1.2–1.4 × as long as its apical width; second tergite often with median carina in basal 0.3-0.4 of tergite; surface of first-third tergites finely striate, granulate between striae.

Description. Holotype, female, body length 4.2 mm, fore wing length 4.0 mm; antenna 7.3 mm; ovipositor sheath 0.5 mm ( Fig. 12 View Figure ).

Head. Antenna with 47 antennomeres; middle antennomere 2.5 × longer than wide (5:2); third antennomere 1.1 × fourth (8:7); preapical antennomere as long as apical antennomere; maxillary palp 1.4 × as long as height of head (34:25); width of face 0.9 × length of face and clypeus combined (15:17); malar space 1.25 × as long as mandible basal width (5:4); mandible basal width 0.6 × as long as hypoclypeal depression (4:7); malar suture present ( Fig. 14 View Figure ); distance between tentorial pits 3.2 × distance between pits and eyes (8:2.5); in dorsal view, height of eye 5.0 × as long as temple (15:3) ( Fig. 13 View Figure ); in lateral view, width of eye 3.25 × as long as temple (13:4) ( Fig. 15 View Figure ); ocelli medium sized, POL:OD:OOL=2:3:3; distance between front and hind ocelli 0.7 × as long as OOL (2:3) ( Fig. 13 View Figure ). Face rugo-punctate; frons almost flat, smooth; vertex with fine transverse striae; temple smooth.

Mesosoma. Length of mesosoma 1.45 × as long as high (58:40); pronotal side finely granulate anteriorly, smooth ventrally; mesoscutum smooth; notauli narrow, rather deep anteriorly, flat posteriorly ( Fig. 16 View Figure ); prescutellar sulcus with one median carina, 0.5 × as long as scutellum (4:8); scutellum coriaceous; mesopleuron and precoxal sulcus smooth ( Fig. 18 View Figure ); metapleuron finely granulate; propodeum with short subbasal median carina, granulate with some divergent striae medio-posteriorly ( Fig. 20 View Figure ).

Wings. Fore wing: length 3.2 × its maximum width (119:37); pterostigma 3.4 × as long as wide (34:10); vein r arising  before middle of pterostigma; r:2-SR:3-SR:SR1=7:11:19:34; vein 1-M slightty curved basally; vein cu-a oblique, 1-CU1:cu-a:2-CU1:3-CU1=3:5:20:4; length of second submarginal 2.9 × as long as its apical width (26:9). Hind wing: length 4.7 × its maximum width (90:19); vein 1-M 1.9 × as long as vein M+CU ( Fig. 22 View Figure ); vein M+CU:1-M: 1r-m=15:29:8.

Legs. Length of hind femur, tibia and basitarsus 4.4, 9.2 and 8.0 × their maximum width, respectively; inner hind tibial spur 0.25 × as long as basitarsus (6:24); hind basitarsus 0.6 × second-fifth tarsus (24:41); fourth hind tarsus 0.8 × telotarsus (7:9); hind tarsal claw large, setose ( Fig. 17 View Figure ).

Metasoma. First tergite 1.4 × as long as apical width (33:23) ( Fig. 21 View Figure ); median length of second tergite 1.85 × than third (24:13); ovipositor sheath 0.75 × as long as hind basitarsus (18:24) and 0.12 × fore wing; ovipositor slender. First metasomal tergite with fine median carina in 0.5 basal tergite, surface of the first tergite granulate but finely striate laterally; second tergite with median carina in 0.3-0.4 basal tergite ( Fig. 21 View Figure ); surface of second-third tergites finely striate with granulation ( Fig. 21 View Figure ).

Colour. Pale yellow; scapus and antenna yellow; palpi pale yellow; stemmaticum brown; pronotal side brown dorsally, pale yellow ventrally; mesopleuron and metapleuron pale yellow; mesoscutum yellow; tegula and scutellum pale yellow; propodeum dark brown but yellow subapically ( Fig. 20 View Figure ); fore and middle legs pale yellow; hind leg yellow except hind coxa pale yellow; fore wing vein brownish yellow; pterostigma yellow basally and apically, brownish medially; first metasomal tergite brown basally and laterally, brownish yellow medio-apically; second-fourth tergites yellow medially, brown laterally, whitish yellow latero-ventrally ( Fig. 21 View Figure ).

Male: Unknown.

Etymology. From “inter” (Latin for between), because this species is intermediate between Darnilia granulata  , sp. n. and D. vietnamica  , sp. n.

Host: Unknown.

Variation. Paratypes: females, antenna with 40–50 segments; first tergite 1.2–1.4 × as long as apical width; body length 3.7–4.7 mm; fore wing length 3.5–4.4 mm; vein 1-M of hind wing 1.7–2.2 × as long as vein M+CU.

Notes. Darnilia intermedia  sp. n. can be distinguished from D. granulata  sp. n. and D. vietnamica  sp. n. by the above key. Besides, D. intermedia  differs from both D. granulata  and D. vietnamica  by having the following characters: a) surface of second-third metasomal tergites with fine longitudinal striae (finely granulate in D. granulata  , and largely striate in D. vietnamica  ); b) occipital carina more or less broadly interrupted medio-dorsally. Additionally, D. intermedia  can be separated from D. granulata  by having: a) vein 1-M of hind wing 1.7–2.2 × as long as vein M+CU (1.1–1.6 × in D. granulata  ); b) first metasomal tergite with basal median carina in 0.4–0.5 tergite (without median carina in D. granulata  ).

VNMN

Vietnam National Museum of Nature

RMNH

National Museum of Natural History, Naturalis