Limits...
A New Oriental Species of Behningia Lestage (Ephemeroptera: Behningiidae)

View Article: PubMed Central

ABSTRACT

A new species of primitive tuskless burrowing mayflies (Ephemeroptera: Palpotarsa: Behningiidae), Behningia baei, new species, is described from larvae taken in Thailand. The new species is differentiated from congeners primarily by its labial palps, labrum, and base of the mid legs. It is the first species of the genus Behningia, and only the second species of the family Behningiidae, to be taken from the Oriental biogeographic region. Larvae previously regarded as B. tshernovae Edmunds and Traver are considered to be assignable to B. lestagei Motas and Bacesco.

No MeSH data available.


Behningia baei, larva (all structures drawn to scale), 1, Labrum. 2, Mandible. 3, Maxilla. 4, Labium. 5, Foreleg. 6, Midleg. 7, Hindleg.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
getmorefigures.php?uid=PMC2990337&req=5

f01: Behningia baei, larva (all structures drawn to scale), 1, Labrum. 2, Mandible. 3, Maxilla. 4, Labium. 5, Foreleg. 6, Midleg. 7, Hindleg.

Mentions: Mature body length 13.0 mm; caudal filaments 6.5 mm. General coloration ventrally light, dorsally medium smoke gray with few light markings. Mouth parts heavily setaceous, more so than shown in Figs. 1–4. Labrum (Figure 1) broad, with broad medioanterior emargination 0.27X labral width. Mandible as in Figure 2. Maxilla as in Figure 3; outer margin of enlarged palp segment 1 straight for entire length. Labium (Figure 4) with narrow, slightly curved glossa; palp segment 1 with straight margins from base, without concavities along either margin, with width gradually increasing to greatest width at about three-fourths length from base and then tapering distally, with greatest width 0.42X length; palp segment 2 relatively short, 0.34X length of segment 3. Fore leg as in Figure 5. Mid leg as in Figure 6; trochanter longer than coxa. Hind leg as in Figure 7. Abdominal terga with paired submedian light markings, progressively more developed in posterior segments; tergum 9 with white, irregularly margined anterior area; tergum 10 mostly light with diffuse gray markings. Caudal filaments cream, unmarked.


A New Oriental Species of Behningia Lestage (Ephemeroptera: Behningiidae)
Behningia baei, larva (all structures drawn to scale), 1, Labrum. 2, Mandible. 3, Maxilla. 4, Labium. 5, Foreleg. 6, Midleg. 7, Hindleg.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC2990337&req=5

f01: Behningia baei, larva (all structures drawn to scale), 1, Labrum. 2, Mandible. 3, Maxilla. 4, Labium. 5, Foreleg. 6, Midleg. 7, Hindleg.
Mentions: Mature body length 13.0 mm; caudal filaments 6.5 mm. General coloration ventrally light, dorsally medium smoke gray with few light markings. Mouth parts heavily setaceous, more so than shown in Figs. 1–4. Labrum (Figure 1) broad, with broad medioanterior emargination 0.27X labral width. Mandible as in Figure 2. Maxilla as in Figure 3; outer margin of enlarged palp segment 1 straight for entire length. Labium (Figure 4) with narrow, slightly curved glossa; palp segment 1 with straight margins from base, without concavities along either margin, with width gradually increasing to greatest width at about three-fourths length from base and then tapering distally, with greatest width 0.42X length; palp segment 2 relatively short, 0.34X length of segment 3. Fore leg as in Figure 5. Mid leg as in Figure 6; trochanter longer than coxa. Hind leg as in Figure 7. Abdominal terga with paired submedian light markings, progressively more developed in posterior segments; tergum 9 with white, irregularly margined anterior area; tergum 10 mostly light with diffuse gray markings. Caudal filaments cream, unmarked.

View Article: PubMed Central

ABSTRACT

A new species of primitive tuskless burrowing mayflies (Ephemeroptera: Palpotarsa: Behningiidae), Behningia baei, new species, is described from larvae taken in Thailand. The new species is differentiated from congeners primarily by its labial palps, labrum, and base of the mid legs. It is the first species of the genus Behningia, and only the second species of the family Behningiidae, to be taken from the Oriental biogeographic region. Larvae previously regarded as B. tshernovae Edmunds and Traver are considered to be assignable to B. lestagei Motas and Bacesco.

No MeSH data available.