Trissolcus zakotos Talamas, 2015

Talamas, Elijah J., Johnson, Norman F. & Buffington, Matthew, 2015, Key to Nearctic species of Trissolcus Ashmead (Hymenoptera, Scelionidae), natural enemies of native and invasive stink bugs (Hemiptera, Pentatomidae), Journal of Hymenoptera Research 43, pp. 45-110 : 83-86

Trissolcus zakotos Talamas sp. n.

Figures 109-112

Description.

Female body length: 1.28-1.41 mm (n=20). Male body length: 1.18 mm (n=1). Color of radicle: brown. Number of mandibular teeth: three. Number of clypeal setae: 6. Facial striae: present as 3 or more rugulae extending onto lateral frons. Shape of gena in lateral view: receding posteriorly. Genal carina: extending dorsally from base of mandible. Macrosculpture of frons outside of antennal scrobe: irregularly rugose. Orbital furrow: narrow to absent near malar sulcus. Hyperoccipital carina: absent. Preocellar pit: present.

Epomial carina: present. Netrion sulcus: complete. Mesoscutal suprahumeral sulcus: indicated by cells. Mesoscutal humeral sulcus: indicated by cells. Pattern of mesoscutal microsculpture: antero-posteriorly uniform. Macrosculpture of mesoscutum: reticulate anteriorly, longitudinally rugulose posteriorly. Area bounded by axillar crescent: smooth. Parapsidal line: absent. Notaulus: absent. Median mesoscutal carina: absent. Median mesoscutal sulcus: absent. Sculpture of mesoscutellum: coriaceous. Postacetabular sulcus: comprised of cells. Shape of episternal foveae: irregular; round. Number of episternal foveae: 1-2. Course of episternal foveae ventrally: distinctly separate from postacetabular sulcus. Course of episternal foveae dorsally: distinctly separated from mesopleural pit. Sculpture of anterior mesepisternum: faintly rugulose; finely reticulate. Mesopleural epicoxal sulcus: present as a smooth furrow; comprised of cells. Mesopleural carina: complete; well defined in anterior half, posterior half poorly defined to absent. Speculum: transversely striate. Paracoxal sulcus in ventral half of metapleuron: indicated by a line of distinct foveae. Anteroventral extension of metapleuron: long, extending to mesocoxa. Line of pits along metapleural carina: present. Setation of metapleuron: absent. Metapostnotum: invaginated near edge of metascutellum and separating metanoum from propodeum. Color of legs beyond coxae: femora and tibiae brown, otherwise variably yellow to brown. Metasomal depression: punctate or crenulate dorsally.

Sublateral setae on T1: absent; present. Setation of laterotergite 1: absent. Sculpture of T2 posterior to antecostal sulcus: smooth or with very faintly impressed striation.

Diagnosis.

Trissolcus zakotos is closest to T. radix , with which it shares a well defined paracoxal sulcus. The two may be separated by the presence of of bright yellow radicle and coarse sculpture of the mesoscutellum in T. radix . In T. zakotos the radicle is brown and the mesoscutellum is covered by microsculpture, but without additional rugae. Additionally, T. zakotos has numerous (3-5) rugae radiating from the lateral edge of the clypeus. This character is present is both T. radix and T. solocis but is less pronounced and the number of rugae is smaller (1-2).

Etymology. The epithet “zakotos” is Greek for “angry” and is applied to this species because of the appearance of its frons. The name is treated as an appositional noun.

Link to distribution map.

[http://hol.osu.edu/map-large.html?id=345034]

Associations.

Emerged from Apateticus bracteatus (Fitch): [ Hemiptera : Heteroptera : Pentatomoidea : Pentatomidae ]

Material examined.

Holotype, female: UNITED STATES: MT, Ravalli Co., Hamilton, V-1972, W. L. Jellison, USNMENT00903008 (deposited in USNM). Paratypes: UNITED STATES: 22 females, 1 male, USNMENT00954588-USNMENT00954589 (CNCI); USNMENT00954586-USNMENT00954587 (OSUC); USNMENT00903005, USNMENT00903006, USNMENT00954590-USNMENT00954606 (USNM).

Figures

Figures 109 - 112. 50 Trissolcus zakotos 109 female paratype (USNMENT 00954596), head, mesosoma, metasoma, lateral view 110 female holotype (USNMENT 00903008), head, mesosoma, metasoma, dorsal view 111 female holotype (USNMENT 00903008), mesosoma, dorsolateral view 112 female paratype (USNMENT 00954600), head, anterolateral view. Scale bars in millimeters. 50