Hybobathus lineatus (Macquart, 1846):267

Hybobathus was a genus described by Enderlein (1938) for his species quadrilineatus. Thompson (pers. com.) consideres quadrilineatus as a member of the lineatus group sensu Hull (1949). Hybobathus species are distinguished by linear, vittate pattern upon the petiolate abdomen. They are light yellow flies with scutum yellow laterally, yellowish-green pollinose medially, with wing light greenish yellow and legs usually yellow.

Synonyms:

Baccha lineatus Macquart, 1846: 267.

Baccha tropicalis Townsend, 1897: 172.

Baccha lineata var. connexa Hull, 1949: 236 [nomen nudum].

New description:

MALE.

Head: Face with small facial tubercle, not produced, yellow, black pilose; gena linear, yellow, yellow pilose; lunule light yellow with round black macula in the middle; frontal triangle yellow with round black macula on posterior half, yellow pollinose on posterior 3/4, black pilose; hooptic, eye bare; vertical triangle black, black pilose; antenna yellow, black pilose; occiput black, silver pollinose, yellow pilose.

Thorax: Scutum dorsally black entirely covered by dense yellow-bronze polen and a vittate pattern: two sublateral black vittae that reach posterior margin, two submedial black vittae that end just after transverse suture, and a broad medial black vitta that reaches posterior margin; mostly black pilose with yellow pile on lateral margins, with distinct yellow collar pile on anterior margin. Scutellum yellow, black pilose, subscutellar fringe complete with brownish pile. Pleuron mostly yellow, except katepimeron sometimes black ventrally, meron black and katatergum black posteriorly; anterior anepisternum pilose dorsally; metasternum bare; calypter yellow; plumula yellow; halter yellow; spiracular fringes yellow. Wing: Wing membrane mostly yellowish on anterior half, stigma dark, entirely microtrichose. Alula broad, microtrichose. Legs: Entirely yellow except metafemur sometimes brownish apically and metatibia brown on apical half.

Abdomen: Slender, almost parallel-sided, slightly petiolate with tegum 2 narrower, unmargined. Tergum 1 yellow, brown-black posteromedially; tergum 2 brown- black with two medial oblique yellow maculae narrowly separated; terga 3, 4 and 5 brown-black with five yellow vittae that reach posterior margin, except the two sublateral yellow vittae on tergum 3 that end before. Sterna yellow.

FEMALE.

Similar to male except frons yellow, densely yellow pollinose with small black macula extending posteriorly forming a medial black vitta; abdomen more oval, with tergum 2 shorter and constricted basally and tergum 3 widening.

Variation: Some specimens have pleura entirely yellow, and in few cases the abdominal vittae are broader.

Ocyptamus (Hybobathus) lineatus (Macquart, 1846).

Macquart, P.J.M. (1846) Dipteres exotiques nouveaux ou peu connus. Supplement. [1]. Memoires de la Société (Royale) des sciences, de l'agriculture et des arts à Lille 1844, 133-364, 20 pls.

GenBank accession number for this species are: protein-coding COI gene (EF127305), rRNA 28S gene (EF127384) and 18S gene (EU409245).

In the molecular analysis by Mengual et al. (2008), Ocyptamus (Hybobathus) lineatus was resolved as sister group of O. (Hermesomyia) wulpianus, as a sister group of a clade comprising other Ocyptamus species and the genus Toxomerus.

Species known from Texas, Florida and Bahamas.