Trissolcus carinifrons (Cameron)

Talamas, Elijah J., Buffington, Matthew L. & Hoelmer, Kim, 2017, Revision of Palearctic Trissolcus Ashmead (Hymenoptera, Scelionidae), Journal of Hymenoptera Research 56, pp. 3-185 : 11-13

Trissolcus carinifrons (Cameron) Figures 24-27

Immsia carinifrons Cameron, 1912: 105 (original description); Kieffer, 1926: 393 (description).

Telenomus carinifrons (Cameron): Dodd, 1920: 355 (description, generic transfer).

Microphanurus carinifrons (Cameron): Nixon, 1938: 124, 138 (description, generic transfer, keyed); Nixon, 1943: 137 (keyed); Risbec, 1950: 569 (keyed).

Trissolcus carinifrons (Cameron): Masner, 1965: 125 (type information, generic transfer); Mani & Sharma, 1982: 143 (description); Johnson, 1992: 624 (cataloged, type information); Rajmohana K. & Narendran, 2007: 102 (keyed).

Description.

Female body length: 1.82 mm (n=1). Body color: head, mesosoma, and metasoma black.

Head. Color of radicle: dark brown. Length of radicle: equal to or greater than width of clypeus. Color of A1-A6 in female: yellow. Facial striae: absent. Number of clypeal setae: 6. Microsculpture on gena directly above mandibular condyle: absent. Shape of ventral gena in lateral view: bulging. Genal carina: present and extending dorsally to vicinity of lower margin eye. Malar striae: absent. Sculpture of malar sulcus: antero-posteriorly striate. Orbital furrow: medially delimited by ridge or carina at midpoint of eye, poorly defined or absent near intersection with malar sulcus. Macrosculpture of frons between antennal scrobe and anterior ocellus: coarsely rugose. Preocellar pit: present. Setation of lateral frons: moderately dense. Sculpture directly ventral to preocellar pit: absent. Macrosculpture of lateral frons: rugose. OOL: lateral ocellus and eye without continuous scleritic separation. Hyperoccipital carina: complete. Macrosculpture of posterior vertex: rugulose. Microsculpture on posterior vertex along occipital carina: present. Anterior margin of occipital carina: coarsely crenulate.

Mesosoma. Epomial carina: present. Macrosculpture of lateral pronotum directly anterior to netrion: striate, striae formed by elongation of cells of netrion sulcus. Netrion sulcus: complete. Pronotal suprahumeral sulcus in posterior half of pronotum: clearly indicated by cells. Location of pronotal suprahumeral sulcus: percurrent. Number of episternal foveae: 3. Course of episternal foveae ventrally: abutting postacetabular sulcus. Course of episternal foveae dorsally: extending to mesopleural pit. Subacropleural sulcus: present. Speculum: transversely strigose. Mesopleural pit: simple. Mesopleural carina: complete. Sculpture of femoral depression: concentrically strigose. Patch of striae at posteroventral end of femoral depression: present, striae perpendicular to long axis of femoral depression. Setal patch at posteroventral end of femoral depression: present. Microsculpture of anteroventral mesopleuron: present dorsally. Macrosculpture of anteroventral mesopleuron: coarsely rugose. Postacetabular sulcus: formed by open crenulae. Mesopleural epicoxal sulcus: formed by open crenulae. Setation of posteroventral metapleuron: absent. Sculpture of dorsal metapleural area: rugose. Posterodorsal metapleural sulcus: poorly defined to absent. Paracoxal sulcus in ventral half of metapleuron: indistinguishable from sculpture to absent. Anteroventral extension of metapleuron: extending to base of mesocoxa. Metapleural epicoxal sulcus: present as clearly defined line of cells. Mesoscutal humeral sulcus: indicated by a line of cells. Median mesoscutal carina: absent. Macrosculpture of mesoscutum: coarsely rugose, lines oriented more longitudinally along posterior margin. Pattern of mesoscutal microsculpture: uniform throughout. Mesoscutal suprahumeral sulcus: comprised of cells. Length of mesoscutal suprahumeral sulcus: about half the length of anterolateral edge of mesoscutum. Parapsidal line: absent. Notaulus: absent. Shape of dorsal margin of anterior lobe of axillar crescent: round. Sculpture of anterior lobe of axillar crescent: absent. Area bounded by axillar crescent: smooth. Macrosculpture of mesoscutellum: rugose throughout. Microsculpture on mesoscutellum: present throughout. Median mesoscutellar carina: absent. Setation of posterior scutellar sulcus: present. Form of metascutellum: two rows of deep, well-defined 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 and fifth tarsomeres brown, elsewhere yellow. Anteromedial portion of metasomal depression: punctate or crenulate.

Metasoma. Longitudinal striae on T1 posterior to basal costae: present. Number of sublateral setae (on one side): 1. Setation of laterotergite 1: absent. Longitudinal striation of T2: present in most of tergite, extending posteriorly to transverse line of setae. Setation of T2: present in a transverse line posteriorly. Setation of laterotergite 2: present. Posteriorly directed setae on medial S1: present. Striation of S2: present laterally and in anterior half of median third. Setation of S2: sparsely present throughout area not covered by laterotergite.

Diagnosis.

Trissolcus carinifrons can be separated from all the species treated here by the combination of 6 setae on the clypeus, the presence of a complete hyperoccipital carina, and a mesepimeral sulcus comprised of circular foveae.

Link to distribution map.

http://hol.osu.edu/map-large.html?id=3197

Material examined.

Holotype, female, I. carinifrons : INDIA: Uttarakhand St., Forest Research Institute (FRI / IFRI), Dehra Dun , 3.VIII.1910, at light, V. S. Iyer, B.M. TYPE HYM. 9.312 (deposited in BMNH).

Figures

Figures 24 - 27. T. carinifrons, female holotype (B. M. TYPE HYM. 9.312) 24 head, mesosoma, metasoma, dorsolateral view 25 head, mesosoma, metasoma, ventrolateral view 26 head, anterior view 27 mesosoma, lateral view. Scale bars in millimeters.