Stenosigma panamensis Ferreira & Hermes, 2018

Ferreira, Wellington D., De Oliveira, Letícia A. & Hermes, Marcel G., 2018, A revision of the Neotropical eumenine wasp genus Stenosigma Giordani Soika, 1978 (Hymenoptera, Vespidae), Zootaxa 4455 (3), pp. 499-512 : 504-505

Stenosigma panamensis Ferreira & Hermes new species

( Figs. 5 , 12 , 19, 22 , 29 )

Comments and diagnosis. This species is quite similar to S. humerale , S. allegrum and S. quechua , sharing with them the absence of dorsolateral lamella on the pronotal carina ( Fig. 19 ) and the predominantly black body color ( Fig. 5 ). It differs from S. allegrum by the sparse punctation on the dorsal surface of pronotum ( Figs. 19, 22 ) and by the lateral margins of the T1 not touching ventrally, widely separated basally ( Fig. 29 ). Stenosigma panamensis differs from S. quechua and S. humerale by the sharp-cornered pronotal carina (in the form of a “Z”) in the dorsolateral surface of the pronotum ( Fig. 19 ), and by the clypeal disc of female evenly flat all along, without a sub apical depression ( Fig. 12 ).

Description. Holotype female. Body length (from head to apex of T1): 13.1 mm; Fore wing length (from mid tegula to apex): 9.5 mm.

Color. Head and mesosoma predominantly blackish, yellow and brown sparse spots. Metasoma bright-brown. Yellow spots as follows: entire mandible, except for margins; broad spots on apex of clypeus; small spots laterally to antennal sockets; spot flanking margin of tegula. Brown spots as follows: edge of compound eye; region posterior to pretegular carina, near dorsal sulcus of mesepisternum; thin band on gena, near posterior margin of compound eye. Apical portion of antenna orange; scape, pedicel and F1 blackish. Coxae and trochanters blackish; base of femur with a broad brown spot; apex of femora, tibiae, tarsi and pre-tarsi yellowish. Wings Brown-hyaline.

Pilosity. Dense golden pubescence on anterior pronotum, mesepisternum, mesoscutum, scutellum, metanotum, and propodeum, denser at apex of the latter. Short and golden bristles less dense on head, legs and metasoma, being fine in the latter.

Sculpture. Clypeus micro-punctation evident, with sparse and shallow large punctures. Frons with sparse punctation; small and deep punctures. Dense punctation from vertex to occiput. Dorsal pronotum with dense punctation, punctures deep and abundant; punctures sparser and obsolete below humeral region. Mesepisternum with sparse and deep punctation. Mesoescutum, scutellum and metanotum with dense punctation, punctures deeper than those of pronotum. Propodeum with dense punctation and deep punctures dorsally, shallower and sparser laterally. Metasoma unpunctured.

Structure. Labrum rounded apically, retracted behind apex of clypeus. Clypeus longer than wide, slightly emarginate apically, almost truncate; short, rounded teeth, with apical carinae not evident; clypeal margins not lamellate. Inter-antennal region cariniform and raised, with basal groove; narrow, smaller than antennal socket. Pronotal carina developed throughout, sinuous and Z-shaped at humerous; humerous projecting; pronotal fovea rounded, nearly occluded by a fold of pronotal carina. Tegula not depressed medially; mesoepisternum with developed dorsal groove, punctured; conspicuous declivity between mesoscutum and scutellum; propodeum with medial projecting carina and evident striation; T1 without basal elevation, rounded preapical fossa; T2 longer than wide, without lamella.

Male. Sexual dimorphism as in most vespids. Antenna with hook-shaped and pointed apical flagellomere, surpassing antipenultimate.

Male genitalia. Apex of aedeagus rounded ( Fig. 34 ), laterally curved ( Fig. 33 ). Digitus with short bristles at apex and well-developed basal protuberances ( Fig. 35 ).

Etymology. The name refers to the country where the first specimens were reported: Panama.

Type Material. Holotype ♀, Panama (MIUP): ‘TROCHA DEL ASERRADERO\ 990 m alt., near Cont. Div\ El Copé, Prov. Coclé\ PANAMA 2 SEPT \ J. COROWODO 1990’ (partially handwritten label) ‘ Pachymenes \ ghilianii \ olivaceus (Sauss)\ Ariel Rodriguez 1994’ (handwritten label). Paratypes: 1 ♀ (MIUP), ‘TROCHA DEL ASERRADERO\ 900 m alt., near Cont. Div\ El Copé Prov. Coclé\ PANAMA 9–10 OCT \ R. CONTRERDS 1990’ (partially handwritten label) ‘ Pachymenes \ ghilianii \ olivaceus (Sauss)\ Ariel Rodriguez 1994’ (handwritten label); 1 ♀ (MIUP), ‘El Copé, Coclé. Div.\ Cont. (900m) Rep. Panam-\ma 2 sept. 1990 \ col. Roberto Cambra T.’ (handwritten label) ‘ Pachymenes \ ghilianii \ olivaceus (Sauss)\ Ariel Rodriguez 1994’ (handwritten label); 1 ♀ (CEUFLA), ‘TROCHA DEL ASERRADERO\ 900 m alt. Near Cont. Div\ El Copé, Prov. Coclé\ PANAMA 2 SEPT. \ J. CORANODO 100’ (partially handwritten label); ‘ Pachymenes \ ghilianii \ olivaceus (Sauss)\ Ariel Rodriguez 1994’ (handwritten label); 1 ♀ (MIUP), ‘El Copé, Coclé\ Rep. Panamá\ 14 junio 1990 \ col. J. Coronado’ (handwritten label) ‘ Pachymenes \ ghilianii \ olivaceus (Sauss)\ Ariel Rodriguez 1994’ (handwritten label); 1 ♀ (MIUP), ‘Foutuna. Chiriouí\ Rep. Panama\ Nov. 88 \ R. Castillo’ (handwritten label) ‘ Pachymenes \ ghilianii \ olivaceus (Sauss)\ Ariel Rodriguez 1994’ (handwritten label); 1 m # (CEUFLA) ‘El Copé, Coclé, Rep. Panama\ 14 junio 1990 \ col. J. Conorado’ (handwritten label) ‘ Pachymenes \ ghilianii \ olivaceus (Sauss)\ Ariel Rodriguez 1994’ (handwritten label); 1 ♀ (CEUFLA), ‘PANAMA: Fortuna, 1050m \ Div. Cont. Chiriqui-\ B. Toro, 8–11 abr 1999 \ R. Cambra, A. Santos’; 1 f# (MIUP), ‘Camino a San Juan, 50 m \ Vert. Altantica, N. del\ Copé, Coclé, Rep. Panama\ 1 SEPT. 1990 \ col. D. Quintero A.’ (handwritten label) ‘ Pachymenes \ ghilianii \ olivaceus (Sauss)\ Ariel Rodriguez 1994’ (handwritten label); 1 m # (MIUP), ‘TROCHA DEL ASERRADERO\ 900 m alt. Near Cont. Div\ El Copé, Prov. Coclé\ PANAMA R. Cambra\ 27–28/XI 1992 ’.

Collecting Records. Panama.

Figures

FIGURES 1–6. HabitUs: 1. Stenosigma allegrum (Zavattari), holotype ♀; 2. S. humerale Giordani Soika, holotype ♀; 3. S. imitans (Ducke), ♀; 4. S. mariae Ferreira & Hermes new species, holotype ♀; 5. S. panamensis Ferreira & Hermes neW species, holotype ♀; 6. S. quechua Hermes & Ferreira, hOlOtype ♀. Scale bar fOr all figUres = 0.5 cm.

FIGURES 7–12. 7. HabitUs: Stenosigma testaceum (FOX), lectOtype ♂. 8–12. Head, frOntal: 8. S. allegrum (ZaVattari), holotype ♀; 9. S. humerale GiOrdani SOika, hOlOtype ♀. 10. S. imitans, ♀. 11. S. mariae, hOlOtype ♀. 12. S. panamensis, holotype ♀. Scale bars for Figs. 7, 8, 11 = 0.5 cm; Figs. 9,10, 12 = 1 mm.

FIGURES 19–24. 19. PrOnOtUm, dOrsOlaterally; arrOW pOint tO prOnOtal carina: Stenosigma panamensis Ferreira & Hermes neW species. 20–22. MesOsOma, lateral: 20. S. allegrum (ZaVattari); 21. S. humerale GiOrdani SOika; 22. S. panamensis Ferreira & Hermes neW species. 23, 24. MesOsOma, pOsterOlattelly; arrOWs pOint tO the hUmerUs regiOn: 23. S. mariae Ferreira & Hermes neW species; 24. S. testaceum (FOX). Scale bars fOr Figs. 19–22 = 0.5 cm; Figs. 23–24 = 1 mm.

FIGURES 25–30. 25–27. PrOnOtUm and mesOscUtUm, dOrsal; White arrOWs pOint tO the prOnOtal carina, red arrOWs pOint tO the prOnOtUm pUnctUatiOn: 25. Stenosigma allegrum (ZaVattari); 26. S. mariae Ferreira & Hermes neW species; 27. S. testaceum (FOX). 28–30. S1, Ventral; arrOWs pOint tO the lateral margins Of T1 Ventrally: 28. S. allegrum (ZaVattari); 29. S. panamensis Ferreira & Hermes neW species; 30. S. humerale GiOrdani SOika. Scale bar fOr all figUres = 1 mm.

FIGURES 31–35. 31, 32. T1, dOrsal; arrOW pOint tO pre-apical fOssa: FIGURES31. Stenosigma humerale (GiOrdani SOika); 32. S. quechua Hermes & Ferreira. 33–35. S. panamensis Ferreira & Hermes neW species, male genitalia: 33. AedeagUs in lateral VieW; 34. AedeagUs in Ventral VieW; 35. GOnOcOXite and VOlsella. Scale bar fOr Figs. 31, 32 = 1 mm; Figs. 33–35 = 0.5 mm.