Centistidea paracarinata Liu and Polaszek, 2024

Liu, Zhen & Polaszek, Andrew, 2024, First record of Centistidea Rohwer (Hymenoptera: Braconidae: Miracinae) from Borneo, with description of six new species, Journal of Natural History 58 (45 - 48), pp. 1979-2002 : 1991-1993

Centistidea paracarinata Liu and Polaszek , sp. n.

urn:lsid:zoobank.org:act:88BEBB80-BF37-4939-8BA4-15146F76669A

( Figure 4 )

Diagnosis

Body length 1.7 mm, light yellow-brown, except notauli on mesonotum, propodeum and metasoma brown ( Figure 4 (a)); head 1.8 × as wide as long, round and not constricted behind eyes in dorsal view; eyes 1.7 × longer than temple in dorsal view; POL:OD:OOL = 2.4:1.0:1.3; a distinct shallow dark sulcus present joining the middle of posterior ocelli and occiput ( Figure 4 (b)); face rather transverse, 1.6 × wider than high; clypeus 1.7 × wider than medial length, sparsely setose ( Figure 4 (c)); antenna indistinctly longer than body, with penultimate and ultimate flagellomeres 2.9 and 3.2 × longer than wide, 1 st nearly 1.3 × longer than 2 nd ( Figure 4 (d)); notauli long and crenulated at anterior 1/2, medial course visible; scutellar sulcus shallowly concave, uncrenulated ( Figure 4 (e)); hind depressions of scutellum large and oblong, interspace 0.2 of minor axis of the depression ( Figure 4 (g)); propodeum with distinct median carinae reaching posterior transverse carina of propodeum and transverse carinae, anterior part with short rugae along the median carinae and lateral longitudinal carinae at sides ( Figure 4 (g)); vein 1-R1 0.7 of pterostigma length ( Figure 4 (h)); metasoma 1.2 × longer than mesosoma, with T1 2.3 × longer than its maximum width, T2 2.6 × wider than median length, T3 1.8 × longer than T2 ( Figure 4 (l)); ovipositor sheath 0.7 of hind basitarsus, with long and short setae apically ( Figure 4 (j)).

Description

Female. Body length 1.7 mm, Fore wing length 1.9 mm ( Figure 4 (a)).

Head. 1.8 × as wide as long, 1.2 × wider than mesoscutum in dorsal view. Eyes 1.7 × longer than temple in dorsal view. Temple smooth, nearly impunctate, except minute setose punctures and shiny, round and not constricted behind eyes in dorsal view ( Figure 4 (b)). Ocelli small, distance between fore and hind ocellus as long as minor axis of a hind ocellus, POL:OD:OOL = 1.3:1.0:2.4. Frons flat and polished. Vertex between eye and hind ocellus shiny and smooth and pubescent. A distinct shallow dark sulcus present joining the middle of posterior ocelli and occiput. Face ( Figure 4 (c)) shallowly, evenly punctate, densely setose, indistinctly convex medially, transverse, 1.6 × wider than high. Clypeus 1.7 × wider than medial length, sparsely setose. Length of malar space as long as basal width of mandible. Antenna ( Figure 4 (d)) indistinctly longer than body, with scape, pedicel and 1 st, 2 nd, penultimate and ultimate flagellomeres 1.8, 2.0, 5.8, 5.0, 2.9 and 3.2 × longer than wide, 1 st nearly 1.3 × longer than 2 nd, flagellomeres following 4 th abruptly shortened as about half length of 4 th flagellomere, 5 th flagellomere without acute tooth ventral-apically.

Mesosoma

Length:width:height = 1.7:1.0:1.2. Mesonotum ( Figure 4 (e)) shiny with distinct sparse setose punctures anteriorly, becoming shallower towards posterior half and polished along posterior margin, notauli long and crenulated at anterior 1/2, medial course visible. Scutellar sulcus slightly curved, narrow, shallowly concave, and uncrenulated. Scutellum shiny with minute setose punctures, not glabrous medio-posteriorly, hind depressions ( Figure 4 (g)) large and oblong, interspace 0.2 of minor axis of the depression. Propodeum ( Figure 4 (g)) shiny, with distinct median carinae reaching beyond costulae, anterior part with short rugae along the median carinae and lateral longitudinal carinae at sides, posterior parts polished, anterior part 2.4 × longer than middle length of metanotum. Mesopleuron ( Figure 4 (f)) highly polished, impunctate.

Legs. Hind femur ( Figure 4 (k)) 3.9 × as long as its widest part. Length of hind femur:tibia: basitarsus = 1.7:2.3:1.0. Basitarsus of hind leg 0.7 as long as tarsomeres 2–5.

Wings. Fore wing: pterostigma narrow, 2.2 × as long as its widest part ( Figure 4 (h)); vein 1-R1 0.7 of pterostigma length; vein r:2-SR:2-M = 1.0:5.9:2.8, 1-SR:1-M = 1.0:3.7, 1-CU1:2- CU1 = 1.0:2.0; first discal cell of fore wing less than 1.2 × wider than high. Hind wing ( Figure 4 (i)): vein M+ CU:1-M:r-m = 2.1:2.6:1.0.

Metasoma. 1.2 × longer than mesosoma. T1 ( Figure 4 (l)) smooth, spoon-shaped (attenuated apically), 2.3 × longer than its subapical maximum width, distinctly narrowed anterio-medially. T2 wide, 2.6 × wider than median length. T3 1.8 × longer than T2, longitudinally striate. Hypopygium not reaching apex of metasoma. Ovipositor sheath 0.7 of hind basitarsus, with long and short setae apically ( Figure 4 (j)).

Colour. Light yellow-brown, except notauli on mesonotum, propodeum and metasoma brown ( Figure 4 (a)). Palpi and spurs pale yellow. Antenna (except apical segment yellow) and ovipositor sheath brown. Legs pale yellow to yellow, except tips of apical tarsomeres. Wing membranes hyaline, pterostigma, vein r, 2-SR, 1-SR, 1-M and 1-CU1 darker brown, other veins light brown.

Male

Similar to female, except darker brown and antenna not pale apically.

Host

Unknown.

Material examined ( NHMUK)

Holotype: 1♀, Malaysia, Borneo, Sabah, Maliau Plot 8 (Trap MT1), DMQI September/ October 2012, No. NHMUK101639280 . Paratypes: 1♀, same data except Plot 5 (Trap MT2), No. NHMUK101639296 ; 1♂, Brunei (E115°7′ N4°34′), Kuala Belalong Field Studies Centre (Malaise), N Mawdsley coll., 18 May 1991. BMNH (E) 1991–173, No. NHMUK101639282 .

Distribution

BRUNEI; MALAYSIA: Borneo: Sabah.

Etymology

The specific name ‘ paracarinata ’ refers to its propodeum with lateral longitudinal carinae beside the median carina.

Remarks

This species is similar to C. nyeringensis Ranjith and Priyadarsanan, 2023 , but differs in the following characters: clypeus 1.7 × wider than medial length (2.6 × in C. nyeringensis ); vein 1-R1 longer, 0.7 of pterostigma length (indistinct in C. nyeringensis ); and anterior part of propodeum with short rugae along the median carinae and lateral longitudinal carinae at sides (no carinae beside the median carinae there in C. nyeringensis ).

Figures

Figure 4. Centistidea paracarinata Liu and Polaszek, sp. n., (a) habitus, dorsal view; (b) head, dorsal view; (c) head, frontal view; (d) antenna; (e) mesonotum and scutellum, dorsal view; (f) mesopleuron; (g) propodeum, dorsal view; (h) fore wing; (i) hind wing; (j) ovipositor sheath; (k) hind leg; (l) metasoma, dorsal view.