Conostigmus electrinus Wang & Chen, 2024

Wang, Xu, Cui, Shanshan, Li, Fang, Huang, Yixin & Chen, Huayan, 2024, Three new species of Conostigmus from China and redescription of Conostigmus ampullaceus Dessart, 1997 (Hymenoptera, Megaspilidae), Journal of Hymenoptera Research 97, pp. 807-824 : 807-824

Conostigmus electrinus Wang & Chen sp. nov.

Material examined.

Holotype: ( AHNU) • male China: Liaoning, Laotudingzi National Nature Reserve , yellow pan traps, 16–19. VII. 2011, Huayan Chen & Kexin Zhao, SCAU 3045596 . Paratypes: ( AHNU) • 1 male, Liaoning, Laotudingzi National Nature Reserve , yellow pan traps, 16–19. VII. 2011, Huayan Chen, SCAU 3045595 ; ( SCBG) • 2 males: 1 male, same collection information as preceding, Pan Li, SCAU 3045594 ; 1 male, same collection information as preceding, Huayan Chen & Kexin Zhao, SCAU 3045593 .

Diagnosis.

This species is distinguished by the following combination of characters: head and mesosoma reddish brown; metasoma and antennae amber; scape length almost equal to F 1; facial pit present; preoccipital furrow present; postocellar furrow absent; sternaulus present, elongate and reaching 1 / 2 of mesopleuron length at the level of the sternaulus; gastral carinae present and reaching 1 / 3 of syntergum length; syntergal translucent patch bending moon shape; harpe slightly shorter than gonostipes.

Description.

Male. Body length: 2–2.2 mm.

Coloration. Colour hue pattern: head and mesosoma reddish brown; metasoma and antennae amber; mandibles reddish brown; palps and legs yellow; pterostigma, costal vein, radial vein and marginal fringes of wings light brown; body pubescence yellowish; male genitalia yellow. Color intensity pattern: head darker than mesosoma; antennae lighter than metasoma; petiole neck and anterior region of syntergite darker in coloration than the posterior region of the syntergite.

Head (Fig. 6 D, E ). Head width, dorsal view: slightly wider than mesosoma (about 1.3 × wider than mesosoma). Head width vs. head height: HW: HH = 1.1–1.2. Head height vs. eye height: HH: EHf = 2.0–2.2. Head height vs. head length: HH: HL = 1.4–1.6. Head width vs. interorbital space: HW: IOS = 1.6–1.7. Lateral ocellar length: ocular ocellar length: LOL: OOL = 0.2–0.3. Lateral ocellar length: posterior ocellar length: LOL: POL = 0.4–0.45. Ocular ocellar length: posterior ocellar length: OOL: POL = 1.4–1.5. Head shape (anterior view): circular or triangular. Preoccipital lunula count: present. Preoccipital carina count: absent. Preoccipital furrow count: present. Preoccipital furrow anterior end: preoccipital furrow ends inside ocellar triangle, but ends posterior to the anterior ocellus. Preoccipital furrow sculpture: crenulate. Occipital carina count: present. Occipital carina structure: complete and crenulate. Postocellar carina count: absent. Intertorular area count: present. Intertorular carina count: present. Median process on intertorular carina count: absent. Median region of intertorular area shape: flat. Facial sulcus absent. Facial pit present. Ocellar foveae distinct, and ocellar foveae width equal to ocellus diameter.

Antennae (Fig. 6 A ). Scape length vs. pedicel length: 5.1–5.6. Scape length almost equal to F 1. F 1 length vs. pedicel length: 5.0–5.3. Longest male flagellomere: F 1. F 1 length vs. F 2 length: 1.2–1.3. Length of pubescence on flagellomere vs. flagellomere width: flagellomeres width about twice than pubescence length.

Mesosoma (Fig. 6 C, D ). Mesosoma slightly narrow (1.4 × longer than wide) (Length / width / height = 686 / 489 / 604 μm). AscW / PscW = 0.8–0.9. Mesoscutum 1.75 × wider than long (Length / width = 227 / 489 μm). Transscutal articulation evident. Notaulus count: present and complete. Notaulus posterior end: adjacent to transscutal articulation, posterior end of notaulus not curved and not adjacent to median mesoscutal sulcus. Median mesoscutal sulcus count: present and complete. Median mesoscutal sulcus posterior end: adjacent to transscutal articulation. Scutoscutellar sulcus count: present. Scutoscutellar sulcus vs. transscutal articulation location: adjacent. Scutoscutellar sulcus shape: scutoscutellar sulcus angled medially, foveolate. Mesoscutellum 1.3 × longer than wide, limited by a u-shaped carina. Sternaulus count: present. Sternaulus shape: elongate and reaching 1 / 2 of mesopleuron length at the level of the sternaulus. Mesopleural sulcus shape: straight. Pleural pit present. Lateral propodeal carina shape: inverted “ Y ”. Anteromedian projection of the metanoto-propodeo-metapecto-mesopectal complex absent.

Wings (Fig. 6 F ). Forewing length: 1.7–1.8 mm, translucent. Forewing macropterous with apex extending past petiole. Forewing with transparent stripes and dense pubescence (stripes without pubescence). Pterostigma triangular, length vs. width: 3.7–4.5. Radius (383 μm), a little curved, longer (1.2 ×) than pterostigma. Hind wing without vein.

Metasoma (Fig. 6 G ). Metasoma 2.1 × longer than wide (Length / width / height = 1129 / 532 / 462 μm). Transverse carina on petiole shape: straight. Syntergum smooth, longer (1.1 ×) than wide. Gastral carinae present and reaching 1 / 3 of syntergum length. Syntergal translucent patch count: present. Syntergal translucent patch shape: crescent. Rest of tergites smooth, but with sparse hairs.

Male genitalia (Fig. 7 ). Harpe shape: simple and not bilobed; finger shape. Distal margin of harpe shape: shrinking to an acute angle. Harpe orientation: dorsomedial. Harpe slightly shorter than gonostipes in lateral view. Lateral setae of harpe count: present. Lateral setae of harpe orientation: oriented distally. Dense patch of setae on the distoventral edge of the harpe count: absent. Parossiculus count or parossiculus and gonostipes fusion: present and parossiculi not fused with the gonostipes. Gonossiculus and gonossiculus spine present. Gonossiculus spine count: 3. Gonossiculus spine length: one spine not more than 2 × as long as the other (s). Penisvalva curved and intersecting proximally.

Distribution.

China (Liaoning).

Biology.

Unknown.

Etymology.

Consistent with the genus name, the species name is a Latin masculine adjective meaning “ amber ”, indicating amber antennae and metasoma.

Figures

Figure 6. Conostigmus electrinus Wang & Chen, sp. nov., male, holotype A lateral habitus B dorsal habitus C head and mesosoma, lateral view D head and mesosoma, dorsal view E head, anterior view F wings G metasoma, dorsal view.

Figure 7. Conostigmus electrinus Wang & Chen, sp. nov., male, holotype, genitalia A dorsal view B ventral view.