Dinotrema cavernicola Peris-Felipo, 2014

Peris-Felipo, Francisco Javier, Belokobylskij, Sergey A., van Achterberg, Cornelis & Perez-Fernandez, Toni, 2014, Dinotrema cavernicola sp. n. (Hymenoptera, Braconidae, Alysiinae), a new species of the genus Dinotrema Foerster from caves of Spain, Journal of Hymenoptera Research 41, pp. 47-56 : 50-53

Dinotrema cavernicola Peris-Felipo sp. n.

Figs 4 -5

Type material.

Holotype: female, Spain, Jaén Province, Cerro de Hornos, Sistema de la Murcielaguina, pit-fall trap, - 35 m, 15.vi.2014 (GEV leg.) (ENV). Paratypes: 2 females, same data as holotype (ENV, ZISP); 3 females, Spain, Jaén Province, La Hoya de Herrera, Sima de La Colada, pitfall trap, - 65 m, 17.viii.2014 (GEV leg.) (ENV, GEV, ZISP).

Description.

Female.

Head. In dorsal view, 1.7 times as wide as long, 1.3 times as wide as mesoscutum (variation 1.2-1.3 times), smooth, with gena rounded behind eyes. Eye in lateral view 1.5 times as high as wide and 1.2 times as wide as gena. POL about as long as OD; OOL 2.3 times OD. Face 1.5 times as wide as high and covered completely by numerous setae; inner margins of eyes subparallel. Clypeus 2.3 times as wide as high, slightly curved ventrally. Anterior tentorial pit short, not reaching halfway between clypeus and eye. Mandible weakly widened towards apex, 1.6 times as long as its maximum width (variation 1.5-1.6 times). Upper tooth medium sized, wide, shorter than lower and middle tooth. Middle tooth rather small, slightly longer than upper tooth, wide basally and pointed apically. Lower tooth short, wide, rounded. Antenna 21-segmented, 1.1 times as long as body. Scape 2.7 times as long as pedicel. First flagellar segment 4.1 times as long as its apical width (variation 4.1-4.2 times), 1.4 times as long as second segment; second segment 2.5 times as long as its maximum width. Third to twentieth flagellar segments 2.3-2.5 times, and twenty-first segment 2.6 times as long as wide.

Mesosoma. In lateral view, 1.1 times as long as high. Mesoscutum (dorsal view) 0.9 times as long as its maximum width, with numerous setae located on middle part of mesoscutum. Notauli mainly absent on vertical surface of mesoscutum. Mesoscutal midpit present and elongate. Scutoscutellar sulcus smooth, without lateral carinae. Precoxal sulcus present, not reaching anterior and posterior margins of mesopectus. Mesepimeral sulcus smooth. Propodeum mainly smooth, median longitudinal carina complete, with several short transverse carinae crossing median carina but not reaching lateral edge of propodeum. Propodeal spiracles relatively small.

Wings. Length of fore wing 2.4 times its maximum width (variation 2.4-2.5 mm). Vein r1 present and sclerotised. Marginal cell reaching apex of wing, 5.0 times as long as its maximum width. Nervulus distinctly postfurcal. Second submarginal cell closed distally, 2.7 times as long as its maximum width (variation 2.6-2.7 times). Hind wing 5.4 times as long as its maximum width (variation 5.3-5.4 times).

Legs. Hind femur 4.0 times as long as its maximum width (variation 3.9-4.0 times). Hind tibia weakly widened to apex, 9.2 times as long as its maximum subapical width, 1.1 times as long as hind tarsus. First segment of hind tarsus 1.7 times as long as second segment.

Metasoma. Long. First tergite weakly widened towards apex, twice as long as its apical width, entirely striate. Ovipositor 1.6 times as long as first tergite, 0.5 times as long as metasoma, 0.9 times as long as hind femur.

Colour. Body, scape, flagellar segments and pterostigma dark brown. Legs, mandible and pedicel yellowish brown. Wings hyaline.

Length. Body 2.7 mm (variation 2.6-2.8 mm); fore wing 3.4 mm (variation 3.4-3.5 mm).

Male. Unknown.

Etymology.

Named “cavernicola” because it inhabits caves.

Comparative diagnosis.

According to the key by Peris-Felipo et al. (2014), this new species is similar to D. affine (Fischer, 1973) and D. collybiae Munk & Peris-Felipo, 2014, both belonging to the species group with a complete median longitudinal carina on the propodeum. Dinotrema cavernicola sp. n. differs from D. affine and D. collybiae in having the first flagellar segment 4.1-4.2 times as long as wide (3.5 times in D. affine and 3.2 times in D. collybiae ), middle flagellar segments 2.3-2.5 times as long as wide (1.6 times in D. affine and 1.4-1.7 times in D. collybiae ), metasoma long (short in D. affine and D. collybiae ), POL about as long as OD (1.5 times in D. affine and 1.4 times in D. collybiae ); OOL 2.3 times OD (3.0 times in D. affine and 2.0 times in D. collybiae ), and ovipositor 1.6 times as long as first tergite (0.6 times in D. affine and 1.2 times in D. collybiae ).

Remarks.

Specimens belonging to the families Phoridae and Heleomyzidae ( Diptera ) were captured in the same traps as Dinotrema cavernicola sp. n. Among Phoridae , the species Megaselia rufipes (Meigen, 1804) and M. tenebricola Schmitz, 1934 were abundantly captured (determination by Dr. Henry L. Disney, UK). It is interesting M. rufipes was already recorded as a host of some Braconidae taxa, such as Orthostigma pumilum (Nees) ( Scott 1920; Lundbeck 1922; Achterberg 1988), Aspilota sp. near nervosa (Schmitz, 1938) and Dinotrema lineola (Thomson) ( Mostovski 2001), as well as Platygaster aegeus Walker ( Platygastridae ) (Morley 1934). Also, Heteromyza atricornis Meigen, 1830 ( Heleomyzidae ) was abundantly captured during samples (determination by Dr. Miguel Carles-Tolrá, Barcelona, Spain).

Figures

Figure 4. Dinotrema cavernicola sp. n. (female). A Habitus, lateral view B Head, lateral view C Mandible D Antenna E Basal segments of antenna F Head, dorsal view.

Figure 5. Dinotrema cavernicola sp. n. (female). A Mesosoma, lateral view B Mesonotum, dorsal view C Propodeum, dorsal view D First metasomal tergite E Metasoma, hind leg and ovipositor, lateral view F Fore and hind wings.