Joguina Navás

Winterton, Shaun L., Balakrishnan, Suryanarayanan Thangalazhi & Chenthamarakshan, Bijoy, 2021, A new species of Joguina Navás, 1912 from India (Neuroptera: Chrysopidae), Zootaxa 4970 (3), pp. 577-585 : 580

Joguina Navás

( Figs 3 , 6–8 )

Joguina Navás, 1912: 98 . Type species: Apochrysa nicobarica Brauer, 1864: 899 .

Diagnosis. Antennal pedicel constricted basally; both wings with numerous cross-veins throughout; forewing subcostal veinlets with 1–3 semi-regular rows of cross-veins in basal half of wing, 0–1 row in distal half; forewing with single row of cross-veins between RA and RP; forewing RP mostly straight; cross-veins between RA and RP behind pterostigma in both wings; both wings with 1–2 conspicuous pustules (dark markings with associated deformation of wing membrane and veins) in discal area, pterostigma lacking dark spot; both wings with gradate series obscured by irregular cross-veins, 3 gradate series when definable; Psc extending greater than 3/4 of total wing length towards apex; forewing cell c 2 short and broad, poorly defined due to numerous cross-veins; 1A and 2A forked; posterior marginal area of forewing with 1–4 rows of cross-veins, hind wing with 0–3 rows, both wings with two rows in distal third; spermatheca with lateral striations, spermathecal duct long, tightly coiled.

Included species. Joguina borneensis Kimmins, 1952 (Borneo) ( Fig. 6 ); J. malayana Banks, 1931 ( Malaysia) ( Fig. 8 ); J. nicobarica (Brauer, 1964) ( India) ( Fig. 7 ); J. unimaculata Winterton, Balakrishnan & Chenthamaraksan sp. n. ( India) ( Fig. 3 ).

Comments. Joguina contains four relatively similar species that differ only in the number and arrangement of anterior and posterior marginal cross-veins and in the position and number of dark wing pustules. The distinctive features of this genus are the single row of cross-veins between RA and RP basally, one to many irregular rows of cross-veins of anterior and posterior marginal cross-veins, and 1–2 round pustules in the wing while the pterostigmata are unmarked. Joguina is restricted to South-East Asia.

Key to species of Joguina Navás

1. Forewing with two dark infuscate pustules; cross-veins present between subcostal veinlets in distal half of forewing (Figs 6–8)................................................................................................ 2.

- Forewing with single dark infuscate pustule; cross-veins absent between subcostal veinlets in distal half of forewing ( Fig. 4 ) ( India).............................................................................. J. unimaculata sp. n.

2. Forewing subcostal veinlets with 1–3 regular to semi-regular rows of cross-veins in basal half of wing ( Figs 6–7 )......... 3.

- Forewing subcostal veinlets with one row of cross-veins in basal half of wing ( Fig. 8 )............... J. malayana (Banks) .

3. Hind wing with two dark pustules; basal dark pustule in forewing equidistant between RP and ‘pseudomedial’ vein (Psm) ( Fig. 7 )................................................................................. J. nicobarica (Brauer) .

- Hind wing with a single dark pustule; basal dark pustule in forewing closer to RP than ‘pseudomedial’ vein (Psm) ( Fig. 6 )................................................................................... J. borneensis Kimmins.

Figures

FIGURE 3. Joguina unimaculata sp. n., adult male (forewing length 29.5 mm).

FIGURE 4. Joguina unimaculata sp. n., wing venation.

FIGURE 6. Joguina borneensis Kimmins, 1952, holotype (Natural History Museum, London) (photo: L.C.V. Breitkreuz).

FIGURE 7. Joguina nicobarica Navás, 1912 (Natural History Museum, London) (photo: L.C.V. Breitkreuz)

FIGURE 8. Joguina malayana Banks, 1931, holotype (Natural History Museum, London) (photo: L.C.V. Breitkreuz).