Nysson rugosus Cameron

Kumar, P. Girish, 2021, A review of the genus Nysson Latreille (Hymenoptera: Crabronidae: Bembicinae: Nyssonini) from India, Records of the Zoological Survey of India 121 (2), pp. 269-277 : 274-276

4. Nysson rugosus Cameron ( Figure 19–27 )

1890. Nysson rugosus Cameron , 242, ♀. Lectotype: ♀, India: Barrackpore ( OXUM), designated by Krombein, 1985: 16.

1913. Nysson horni Strand ,11, ♀ (as Horni , incorrect original capitalization). Holotype: ♀, Sri Lanka: Matale (DEI). Synonymized with Nysson rugosus by Krombein, 1985: 15.

Diagnosis: Apical margin of clypeal lobe rounded medially ( Figure 21 ); frontal carina low, rounded, extending onethird toward anterior ocellus; punctation of head coarser ( Figure 20 ); pronotal dorsum not ridged anteriorly; upper part of mesopleuron towards top weakly elevated, not to form a lamellate projection; propodeal enclosure with coarse longitudinal rugae dorsally; posterolateral propodeal tooth short, blunt; second submarginal cell of forewing distinctly shorter than the third submarginal cell on the lower side ( Figure 23 ); first two metasomal tergites with punctures separated by once or twice the diameter of a puncture; in female, pygidium ( Figure 26 ) well developed with small continuous pits, apex narrowly rounded; last metasomal sternite, in female, without a median polished longitudinal groove, apex of this sternite distinctly curved inward; in male, seventh metasomal tergum with acute posterolateral tooth, apex between teeth emarginate and apical margin of seventh sternum rounded.

Colour: Black, integument dull, the following red: mandible except base and apex, hind femur (rarely black), rarely on fore and mid femora and hind tibia beneath, first tergum almost entirely except apical dull white spots ( Figure 25 ), second tergum anterolaterally, first and second sternum; the following dull white to pale yellow: base of mandible, apex of scape beneath, stripe on pronotal dorsum interrupted in middle ( Figure 22 ), pronotal lobe, narrow band at base of scutellum ( Figure 22 ), fore coxa and apices of mid and hind coxa beneath, small spot on base of fore and mid tibia (rarely absent), small spot on apices of all tibiae, posterolateral propodeal tooth, first two metasomal terga apically with a narrow transverse stripe broadly interrupted in middle and not extending to sides ( Figure 25 ); the following brown: tegulae (rarely black). Vestiture silvery, short, and appressed, dense only on clypeus, lower half of frons towards inner eye margins, and propodeal dorsum laterad of propodeal enclosure, and in males apical margin of seventh sternum (with a row of dense short setae) also. Wings ( Figure 23 & 24 ) slightly infumated, veins dark brown.

Size: female, 4.9–6.4 mm; male, 4.4–5.9 mm.

Material examined: INDIA: Goa, South Goa district, Bhagwan Mahaveer Wildlife Sanctuary (15° 22’ 42’’ N & 74° 13’ 43’’ E, 87 m), 1♀, 17.v.2018, Coll. P. Girish Kumar, ZSIK Regd. No. ZSI/WGRC/IR/INV.14618; South Goa district, Kotigao Wildlife Sanctuary (14° 58’ 34’’ N & 74° 12’22’’ E, 87 m), 1♂, 18.v.2018, Coll. P.Girish Kumar, ZSIK Regd. No. ZSI/WGRC/IR/INV.14619 . Kerala, Kannur district, Aralam Wildlife Sanctuary (11° 55’ 19’’ N & 75° 47’ 35’’ E, 86 m), 1♀, 16.iii.2019, Coll. P. Girish Kumar, ZSIK Regd. No. ZSI/WGRC/IR/INV.14620; Kannur district, Kannapuram (11° 57’ 59’’ N & 75° 19’ 01’’ E, 13 m), 5♀♀ & 3♂♂, 3.iii.–18.v.2019, Coll. C. Charesh, ZSIK Regd. Nos. ZSI/WGRC/IR/INV.14621–14628; Kozhikode district, Kakkavayal (11° 29’ 47’’ N & 75° 58’ 11’’ E, 53 m), 1♀, 8.i.2018, Coll. P. Girish Kumar, ZSIK Regd. No. ZSI/ WGRC/IR/INV.14629; Kozhikode district, Purameri (11° 40’ 26’’ N & 75° 37’ 51’’ E, 20 m), 6♀♀, 29.ii.2018 – 27. xii.2019, Coll. K.P. Hanima Raveendran, ZSIK Regd. Nos. ZSI/WGRC/IR/INV.14630–14635; Kozhikode district, Madapally (11° 38’ 42’’ N & 75° 34’ 15’’ E, 19 m), 1♀ ,

3.i.2019, Coll. S. Anagha, ZSIK Regd. No. ZSI/WGRC/ IR/INV.14636; Kozhikode district, Janakikkadu (11° 37’ 32’’ N & 75° 47’ 36’’ E, 31 m), 2♀♀ & 1♂ , 1.iii.2019, Coll. N.V. Ayisha Mawadda & Party, ZSIK Regd. Nos. ZSI/WGRC/IR/INV.14637–14639; Malappuram district , Nedumkayam (11° 41’ 01’’ N & 75° 39’ 20’’ E, 27 m), 3♀♀ & 1♂ , 29.ii.2020, Coll. Tessy Rajan, ZSIK Regd. Nos. ZSI/WGRC/IR/INV.14640–14643; Kottayam district , Cherpunkel (9° 41’ 02’’ N & 76° 38’ 19’’ E, 31 m), 1♂ ,

26.xii.2019, Coll.Tessy Rajan, ZSIK Regd.No. ZSI/WGRC/ IR/INV.14644; Thiruvananthapuram district , Neyyar Wildlife Sanctuary, Neyyar dam site (8° 32’ 01’’ N & 77° 08’ 50’’ E, 77 m), 3♀♀ , 17.i.2019, Coll. P. Girish Kumar, ZSIK Regd. Nos. ZSI/WGRC/IR/INV.14645–14647; Thiruvananthapuram district , Neyyar Wildlife Sanctuary, Kottur (8° 33’ 21’’ N & 77° 09’ 15’’ E, 77 m), 1♀ & 1♂ ,

17.i.2019, Coll. P. Girish Kumar, ZSIK Regd. Nos. ZSI/ WGRC/IR/INV.14648 & 14649; Thiruvananthapuram district , Peppara Wildlife Sanctuary, Kanithadam forest (8° 39’ 43’’ N & 77° 08’ 59’’ E, 125 m), 1♂ , 19.i.2019, Coll. P. Girish Kumar, ZSIK Regd. No. ZSI/WGRC/IR/ INV.14650; Thrissur district , Elanad (10° 37’ 39’’ N & 76° 23’ 45’’ E, 62 m), 2♀♀ , 25.xii.2018, Coll. N.V. Ayisha Mawadda, ZSIK Regd. Nos. ZSI/WGRC/IR/INV.14651 & 14652; Wayanad district, Kalloor (11° 39’ 52’’ N & 76° 19’ 55’’ E, 881 m), 1♀ , 10.iii.2020, Coll. Kuriakose Jr., ZSIK Regd. No. ZSI/WGRC/IR/INV.14653; Wayanad district ,

Panamaram (11° 44’ 05’’ N & 76° 04’ 19’’ E, 719 m), 1♀, 13.iii.2020, Coll. Kuriakose Jr., ZSIK Regd. No. ZSI/ WGRC/IR/INV.14654. Tamil Nadu, Coimbatore district, Kullanadimedu (10° 29’ 12’’ N & 76° 53’ 48’’ E, 364 m), 1♀, 2.i.2019, Coll. P. Girish Kumar, ZSIK Regd. No. ZSI/ WGRC/IR/INV.14655; Coimbatore district, Anaikati (11° 06’ 04’’ N & 76° 46’ 42’’ E, 668 m), 1♀, 4.i.2019, Coll. P. Girish Kumar, ZSIK Regd. No. ZSI/WGRC/IR/INV.14656; Coimbatore district , Tholampalayam (11° 11’ 14’’ N & 76° 51’ 00’’ E, 399 m), 2♂♂, 4.i.2019, Coll. P. Girish Kumar, ZSIK Regd. Nos. ZSI/WGRC/IR/INV.14657 & 14658; Coimbatore district , valley of Palamalai (11° 09’ 25’’ N & 76° 53’ 42’’ E, 467 m), 1♂, 6.i.2019, Coll. P. Girish Kumar, ZSIK Regd. No. ZSI/WGRC/IR/INV.14659; Kanyakumari district , Kanyakumari Wildlife Sanctuary, Alagiyapandipuram Range, Pallakulam (8° 18’ 43’’ N & 77° 26’ 59’’ E, 50 m), 1♀, 19.ii.2020, Coll. S. Sen & Party, ZSIK Regd. No. ZSI/WGRC/IR/INV.14660 .

Distribution: India:Goa(new record), Kerala (new record), Tamil Nadu (new record), West Bengal. Elsewhere: Sri Lanka ( Cameron, 1890; Rothney, 1903; Krombein, 1985).

Figures

Figures 19-27. Nysson rugosus Cameron. 19–26 ♀ & 27 ♂. 19. Habitus, lateral view. 20. Head, face view. 21. Lower part of head, face view. 22. Head and mesosoma, dorsal view. 23. Fore wing. 24. Hind wing. 25. Metasoma, dorsal view. 26. Last metasomal tergite. 27. Antenna.