Allocapnia, MINIMA

Stark, Bill P. & Kondratieff, Boris C., 2012, Epiproct And Dorsal Process Structure In The Allocapnia Forbesi Frison, A. Pygmaea (Burmeister), And A. Rickeri Frison Species Groups (Plecoptera: Capniidae), And Inclusion Of A. Minima (Newport) In A New Species Group, Illiesia 8 (5), pp. 45-77 : 53

ALLOCAPNIA MINIMA GROUP

Our decision to remove A. minima from the A. forbesi group and place it as the solitary member of this group is discussed above. Ross & Ricker (1971) indicated the tenuous nature of their assignment by linking the species to A. maria by a dashed line in their phylogenetic chart ( Ross & Ricker 1971, Fig. 86 ). Ross & Ricker’s (1971) inclusion of A. minima in the A. forbesi clade was based entirely on the similarity of the female terminalia, a character state that can vary in other species groups of the genus (e.g. A. rickeri group). Allocapnia minima is similar in epiproct armature to members of the A. vivipara (Claassen) group, including A. brooksi Ross 1964 , and A. tennessa Ross & Ricker 1964 (Stark & Kondratieff, unpublished), and may be more closely related to that group than to members of the A. forbesi group.

Figures

Figs. 85-90. Allocapnia harperi, Station Spring Creek, Tazewell Co., Virginia. 85. Male terminalia, dorsal. 86. Apical segment upper limb of epiproct, dorsal. 87. Apical segment upper limb of epiproct tip, dorsal. 88. Surface detail apical segment upper limb of epiproct, dorsal. 89. 8th tergal process and epiproct tip, lateral. 90. 8th tergal process and epiproct tip, anterodorsal.