Dorsum Of Head Research Articles

Link between Sminthurinus and Katianna Collected from Alabama (Collembola: Katiannidae)

A new subgenus and species, Sminthurinus (Neokatianna) acantholaema Snider, is described from Auburn, Alabama. This subgenus exhibits morphological characteristics of both Sminthurinus and Katianna: subsegmented ANT IV, spine-like setae on dorsum of head, clavate tenent hairs, triangular bothriothrix ABC pattern, heel of mucro points straight down, palmate female subanal appendage, and bifid median seta on anal papilla. This species was taken from grass sweepings, Lee County, Auburn University Arboretum.

A New Delphinium-Infesting Aphid (Homoptera: Aphididae)

Apterous Viviparous FemaleHolotype.–Dorsum of head with six blunt or slightly clavate setae. Frontal tubercles well developed, smooth, diverging, each with one long, (blunt seta on dorsal surface and one or two on ventral surface. Antenna about as long as body, third segment expanded just distad of base to almost twice its basal diameter; 56 small, tubercle-like, secondary sensoria scattered along whole length of one third segment, 60 on other; one fourth segment with four secondary sensoria, the other with five; a single, large, primary sensorium near apex of each fifth segment, and one large one and five or six adjacent smaller ones near apices of basal portion of sixth segment; each small primary sensorium on sixth segment with a central papilla; all primary sensoria lacking marginal, cilia-like fimbriations. Antennal setae distinctly capitate and about equal in length to basal diameter of third segment. Lengths of antenna1 segments as follows: III, 0.85 mm.; IV, 0.4 mm.; V, 0.3 mm.; VI, 0.15-0.85 mm. Rostrum reaching slightly beyond middle coxae; apical segment 0.13 mm. long, with 17 slender pointed setae in addition to usual apical ones.