Trissolcus semistriatus (Nees von Esenbeck 1834) Ashmead 1893
- Dataset
- A morphological, biological and molecular approach reveals four cryptic species of Trissolcus Ashmead (Hymenoptera, Scelionidae), egg parasitoids of Pentatomidae (Hemiptera)
- Rank
- SPECIES
Classification
- kingdom
- Animalia
- phylum
- Arthropoda
- class
- Insecta
- order
- Hymenoptera
- family
- Scelionidae
- genus
- Trissolcus
- species
- Trissolcus semistriatus
description
Description. Body length: 1.07 - 1.11 mm, median = 1.08 mm, SD = 0.01, n = 20. Body color: head, mesosoma, and metasoma black. Head. FCI = 1.4; LCI = 1.9; IOS = 0.33 mm; OOL: POL: LOL = 1: 12: 5.4. Length of radicle: less than width of clypeus. Color of A 1 - A 6 in female: distal A 2 yellow to light brown, otherwise black. Color of A 7 - A 11 in female: black. Number of papillary sensilla on A 6: 0. Number of papillary sensilla on A 7: 2. Facial striae: absent. Number of clypeal setae: 6. Shape of gena in lateral view: narrow. Genal carina: present only at base of mandible. Malar striae: absent. Sculpture of malar sulcus: weakly and densely striate. Orbital furrow: uniform in width between midpoint of eye and malar sulcus. Macrosculpture of frons directly dorsal to the antennal scrobe: coarsely rugose. Preocellar pit: present. Setation of lateral frons: sparse; moderately dense. Punctation of lateral frons: sparse. Sculpture directly ventral to preocellar pit: dorsoventrally fluted. Rugae on lateral frons: weakly developed to absent. OOL: less than one ocellar diameter. Hyperoccipital carina: absent. Macrosculpture of posterior vertex: absent. Microsculpture on posterior vertex along occipital carina: granulate. Anterior margin of occipital carina: crenulate. Medial part of occipital carina in dorsal view: angled, vertex of angle with short carina directed toward median ocellus. Mesosoma. Epomial carina: present. Macrosculpture of lateral pronotum directly anterior to netrion: finely rugulose. Netrion sulcus: complete. Pronotal suprahumeral sulcus in posterior half of pronotum: undifferentiated from sculpture of dorsal pronotum. Number of episternal foveae: 2. Course of episternal foveae ventrally: distinctly separate from postacetabular sulcus. Course of episternal foveae dorsally: distinctly separate from mesopleural pit. Subacropleural sulcus: present. Speculum: transversely strigose. Mesopleural pit: extending ventrally into dorsoventral furrow parallel to mesopleural carina. Mesopleural carina: well defined anteriorly, poorly defined to absent posteriorly. Sculpture of femoral depression: smooth. Patch of striae at posteroventral end of femoral depression: present, striae oblique to long axis of femoral depression. Setal patch at posteroventral end of femoral depression: absent. Microsculpture of anteroventral mesopleuron: present throughout. Macrosculpture of anteroventral mesopleuron: absent. Postacetabular sulcus: comprised of large cells. Mesopleural epicoxal sulcus: comprised of cells. Setation of posteroventral metapleuron: absent. Sculpture of dorsal metapleural area: absent. Posterodorsal metapleural sulcus: present as a line of foveae. Paracoxal sulcus in ventral half of metapleuron: indistinguishable from sculpture. Length of anteroventral extension of metapleuron: short, not extending to base of mesocoxa. Metapleural epicoxal sulcus: present as coarse rugae. Mesoscutal humeral sulcus: present as a simple furrow. Median mesoscutal carina: absent. Microsculpture of mesoscutum: imbricate-punctate anteriorly, becoming longitudinally imbricate-strigate posteriorly. Mesoscutal suprahumeral sulcus: comprised of cells. Length of mesoscutal suprahumeral sulcus: two-thirds the length of anterolateral edge of mesoscutum. Parapsidal line: absent. Notaulus: absent. Median protuberance on anterior margin of mesoscutellum: absent. Shape of dorsal margin of anterior lobe of axillar crescent: acute. Sculpture of anterior lobe of axillar crescent: dorsoventrally strigose. Area bound by axillar crescent: smooth. Macrosculpture of mesoscutellum: absent. Microsculpture on mesoscutellum: imbricate-punctate laterally to smooth medially. Median mesoscutellar carina: absent. Setation of posterior scutellar sulcus: present. Form of metascutellum: single row of cells. Metanotal trough: foveate, foveae occupying more than half of metanotal height. Metapostnotum: invaginated near lateral edge of metascutellum. Length of postmarginal vein: about twice as long as stigmal vein. Color of legs: coxae dark brown to black, femora and tibia dark brown with yellowish tips, trochanters and tarsi yellow to pale brown. Anteroventral area of hind femora: covered by setae. Anteromedial portion of metasomal depression: smooth. Metasoma. Width of metasoma: about equal to width of mesosoma. Longitudinal striae on T 1 posterior to basal costae: pair of longitudinal submedial carinae separate a lateral smooth area from an internal area where striate sculpture starts with basal grooves. Number of sublateral setae (on one side): 1. Setation of laterotergite 1: absent. Length of striation on T 2: extending two-thirds the length of the tergite. Setation of T 2: present in a transverse line and along lateral margin. Setation of laterotergite 2: present.
description
Figures 7, 11, 15, 19, 25, 29, 32, 36, 40, 44, 59, 60.
diagnosis
Diagnosis. Trissolcus semistriatus is most similar to T. belenus and T. colemani, with which it overlaps in distribution and host range. It can be separated from both by the mesoscutal humeral sulcus present as a smooth furrow (Figure 25) and the short anteroventral extension of the mesopleuron, which does not extend to the base mesocoxa (Figure 7). Additionally, the angular form of the occipital carina in dorsal view, with a short carina extending toward the median ocellus, is found only in this species (Figure 36). The anteroventral area of the hind femur that is covered by setae (Figure 29) is useful when separating T. semistriatus from T. belenus (Figure 26), T. colemani (Figure 27) and T. manteroi (Figure 28).
distribution
Link to distribution map. [https: // hol. osu. edu / map-large. html? id = 3305]
materials_examined
Material examined. Neotype, female, Teleas semistriatus: Palearctic: no date, NHMW 0007 A (deposited in NHMW). Paratype of Trissolcus artus: Russia: 1 female, USNMENT 00916276 (ZIN). Neoparatype: Palearctic: 1 female, NHMW 0007 B (NHMW). Other material: (183 females, 50 males, 2 pins with multiple specimens) Iran: 11 females, HMIM-HYM- 022, 038 (HMIM); USNMENT 01223083 - 01223089 (UNIPA); USNMENT 01223228 - 01223229 (MCSN). Italy: 189 females, 54 males, 2 pins with multiple specimen, DISAFA-draw 1465 - HYM- 0226 - 0240, 0242 - 0423 (DISAFA); MSNG-HYM- 0005 - 0013 (MCSN); UNIPA-HYM-S 01329 - 01346, USNMENT 01223140 - 01223142, 01223482 (UNIPA). Japan: 1 female, EIHU 0003 (EIHU). Morocco: 1 female, USNMENT 01223143 (UNIPA). Portugal: 3 females, USNMENT 00916201 - 00916202, 00916236 (BMNH). Sweden: 1 female, UNIPA-HYM-S 01326 (BMNH). Switzerland: 1 female, DISAFA-draw 1465 - HYM- 0241 (DISAFA).
Name
- Synonyms
- Asolcus nigripedius Nakagawa 1900
- Microphanurus alexeevi Meier 1949
- Microphanurus schtepetelnikovae Meier 1949
- Microphanurus semistriatus (Nees von Esenbeck 1834)
- Teleas semistriatus
- Telenomus semistriatus (Nees von Esenbeck 1834)
- Trissolcus nigripedius (Nakagawa 1900)
- Homonyms
- Trissolcus semistriatus (Nees von Esenbeck 1834) Ashmead 1893