Cinetus Jurine, 1807

Quadros, Alex Leite & Brandão, Carlos Roberto F., 2017, Genera of Belytinae (Hymenoptera: Diapriidae) recorded in the Atlantic Dense Ombrophilous Forest from Paraíba to Santa Catarina, Brazil, Papéis Avulsos de Zoologia (São Paulo) 57 (6), pp. 57-91 : 64-65

Cinetus Jurine, 1807

( Figs. 4B, 4D , 8 , 9 , 12C , 14B , 22C )

Total of specimens found: 6 (females) in four morphospecies.

Diagnosis: Overall size between 2 and 5 mm; mandibles short (mandible length as long as or shorter than the distance between the ventrolateral margins of the head, near the bases of the mandibles) ( Figs. 9A , 12C ); antenna 15-segmented in females, 14-segmented in males. Epomia always well developed; notauli complete, slightly diverging posteriorly ( Fig. 9E ); scutellar fovea subquadrate, relatively large ( Fig. 9E ); posterior extremity of the notaulus directed to a point inside this fovea ( Fig. 9E ); carina between the medial keel and the internal plica present ( Fig. 9C ) or absent. Marginal vein as long as or short- er than radial cell, and as long as or slightly shorter than parastigma ( Figs. 4B, 4D ); third gaster segment almost always very long, dorsoventrally flattened or in the form of a truncated cone, the open end of which is more or less tubular; the gaster apical segments can be otherwise modified, rarely 2-3 clearly defined simple ring segments beyond the large tergite ( Figs. 8 , 9B ); male genitalia with fused volsellae and dentes.

Material examined: BRAZIL: Santa Catarina: São Bento do Sul, CEPA Rugendas , 26°19’25.6”S, 49°18’26.5”W, 13-16.x.2001, A.M. Penteado-Dias e eq. col., 2 ♀♀ ; São Paulo: Base Barra Grande, Parque Estadual de Intervales , 24°18’14.4”S, 48°21’50.4”W, 12.xii.2000, 13.xii.2000, M. T. Tavares e eq. col., 2 ♀♀ ; Rio de Janeiro: Santa Maria Madalena, Parque Estadual do Desengano , 21°59’03.9”S, 41°57’08.4”W, 19-22.iv.2002, A.M. Penteado-Dias e eq. col., 1 ♀ ; Alagoas: Quebrangulo, Reserva Biológica Pedra Talhada , 09°18’57.6”S, 36°27’57.6”W, 11-14.ix.2002, A.M. Penteado-Dias e eq. col., 1 ♀. A.L. Quadros det.

Remarks: Cinetus species share some character states with Scorpioteleia . The two genera can be easily dis- tinguished one from each other by the venation; in Scorpioteleia the marginal vein is always clearly short- er than the radial cell and parastigma ( Figs. 4A, 4C ) ( Macek, 2006). There are fifty nine described species of Cinetus in the world ( Johnson, 1992; Buhl, 1998; Rajmohana, 2006), being Cinetus tabidus Spinola, 1851 the only species recorded in the Neotropics (Santa Rosa de los Andes, Chile) ( Spinola, 1851) thus far, but there may be up to twenty species in the Region ( Hanson & Gauld, 2006). Nixon (1957) ’s identification key is reliable for the European species, with emphasis on the British fauna.

Distribution: Cosmopolite ( Hanson & Gauld, 2006). In the Atlantic Forest, the six specimens were recorded in Alagoas state and in the southern portion of the biome, from Santa Catarina to Rio de Janeiro ( Fig. 22C ).

Biology: Parasitoids of Mycetophilidae ( Hanson & Gauld, 2006) .

Figures

FIGURE 4: Forewing of six Belytinae spp. (Hymenoptera, Diapriidae) from the Biota project (2000-2002): (A) female forewing of Scorpioteleia collected in Parque Estadual Serra do Mar, SP; (B) female forewing of Cinetus collected in CEPA Rugendas, SC; (C) female forewing of Scorpioteleia collected in Parque Estadual de Intervales, SP; (D) female forewing of Cinetus collected in Parque Estadual de Intervales, SP; (E) female of Belyta collected in Estação Ecológica Pau Brasil, BA; (F) male forewing of Belyta collected in Reserva Biológica do Tinguá, RJ.

FIGURE 8: Metasoma in dorsal view of three Cinetus spp. (Hymenoptera, Diapriidae, Belytinae), females collected by the Biota project (2000-2002): (A) from Parque Estadual do Desengano, RJ; (B) from CEPA Rugendas, SC; (C) from Parque Estadual de Intervales, SP.

FIGURE 9: Cinetus sp. (Hymenoptera, Diapriidae, Belytinae), female collected in the Parque Estadual de Intervales, SP (Biota project 2000-2002): (A) head, frontal view; (B) habitus, lateral view; (C) propodeum, dorsal view; (D) mesosoma, lateral view; (E) mesosoma, dorsal view.

FIGURE 12: Head in frontal view of three different Belytinae spp. (Hymenoptera, Diapriidae) from Biota project (2000-2002): (A) female of Aclista collected in Parque Estadual de Intervales, SP; (B) female of Belyta collected in Reserva Biológica do Tinguá, RJ; (C) female of Cinetus collected in CEPA Rugendas, SC.

FIGURE 14: Scutellar disc, metascutellum and propodeum in lateral view of four Belytinae spp. (Hymenoptera, Diapriidae) from Biota project (2000-2002): (A) male of Lyteba collected in Parque Estadual de Intervales, SP; (B) female of Cinetus collected in Parque Estadual do Desengano, RJ; (C) female of Tropidopsilus collected in Parque Estadual do Desengano, RJ; (D) female of Tropidopsilus collected in CEPA Vila da Glória (arrow indicates the crenulation in the posterior margin of scutellar disc).

FIGURE 22: Distribution of Belytinae genera (Hymenoptera, Diapriidae) in the Atlantic Forest collected by the Biota project (2000-2002): (A) Tropidopsilus, at a scale of 1:1000; (B) Scorpioteleia, at a scale of 1:300; (C) Cinetus, at a scale of 1:1000.