Triatoma matogrossensis

Obara, Marcos Takashi, Barata, Jose Maria Soares & Rosa, João Aristeu Da, 2012, Description of the female and new records of Triatoma baratai Carcavallo & Jurberg, 2000 (Hemiptera: Heteroptera: Reduviidae: Triatominae) from Mato Grosso do Sul, Brazil, with a key to the species of the Triatoma matogrossensis subcomplex, Zootaxa 3151, pp. 63-68 : 66-67

Key to the species of T. matogrossensis subcomplex

1. Pronotum brown or with marking......................................................................... 2

- Pronotum entirely black................................................................................ 3

2. Pronotum and legs reddish brown; trochanters yellowish; femora with small tubercles; connexivum dark, with sub-triangular orange mark on each segment, ventrally attaining the connexival suture; head with anteocular region 6 or more times longer than postocular (1:0.16)......................................................................... T. jurbergi

- Pronotum dark brown or reddish brown with 1+1 light spots on ad-humeral region; legs light yellowish brown with markings or annulus dark colored; femora predominantly light colored; connexivum yellow or yellowish brown with a straight dark stripe.................................................................................. T. matogrossensis

3. Tibiae brown; head, pronotum, pleura, prosternum, and abdomen black; anteocular region 4.6 times longer than postocular; eyes in lateral view not surpassing the superior limit of the head; connexivum ventrally, without marks; connexivum dorsal almost without markings except small black line in intersegmental suture.................................. T. vandae

- Tibiae uniformly colored or with spot apically or with light colored annulus subapically.............................. 4

4. Trochanters and base of femora yellow; legs dark brown; hemelytra attaining the apex of seventh urotergite in both sexes;

transversal dark markings of connexivum approximately in shape of musical notes; head longer than pronotum (1:0.9)................................................................................................. T. deaneorum - Femora entirely dark, trochanters partially or entirely dark...................................................... 5

5. First antennal segment distant from the level of apex of clypeus................................................. 6 - First antennal segment almost attaining the level of apex of clypeus; apical process of scutellum short, shorter than the half of entirely scutellum; hemelytra attaining the apex of dorsal abdomen; corium with basal half light yellow; apical half of corium and membrane brown; head with anteocular region 4 times longer than postocular. Large eyes just surpassing inferior border of head in lateral view. Apical process of scutellum horizontal............................................... T. guazu

6. Corium of hemelytra black with orange or reddish spots on apical half; connexivum black and edge of border orange, interrupted by very narrow black bands at level of intersegmental suture; at internal limit connexivum entirely black.. T. costalimai

- Corium of hemelytra yellow or orange with dark veins; connexivum different; legs black, anterior and median femora with small tubercles........................................................................................7

7. Connexivum pale yellow with small dark markings at intersegmental suture along the external border and a dark line along connexival suture; membrane grayish brown; anteocular region 4 times longer than postocular................. T. williami

- Connexivum completely pale yellow; dark suture visible only ventrally; membrane fumose; anteocular regional 5 times longer than postocular................................................................................ T. baratai