Glyphocrangon, A. Milne-Edwards, 1881

Vázquez-Bader, Ana Rosa & Gracia, Adolfo, 2013, Crangonidae and Glyphocrangonidae (Decapoda; Caridea) of the Southern Gulf of Mexico, Zootaxa 3669 (3), pp. 367-383 : 381

Key to the Western Atlantic and Gulf of Mexico species of Glyphocrangon (after Holthuis 1971)

1. Anterior lateral carina of carapace with 2 distinct teeth behind the branchiostegal spine.............................. 2

- Anterior lateral carina of carapace with one tooth or without teeth behind branchiostegal spine........................ 8

2. Pleuron of fifth abdominal somite ending in 3 distinct teeth............................................. G. sculpta

- Pleuron of fifth abdominal somite ending in 2 distinct teeth.................................................... 3

3. Rostrum with 3 lateral teeth on each side; dactylus of fifth pereiopod, at least in females, broad and bifid........ G. rimapes

- Rostrum with 2 lateral teeth on each side; dactylus of fifth pereiopod oval, not bifid................................. 4

4. Anterior antennal carina formed of row of tubercles; first abdominal somite with transverse rows of tubercles between intermediate carinae.......................................................................................... 5

- Anterior antennal carina absent; first abdominal somite usually with only single transverse row of tubercles, viz., along posterior margin........................................................................................... 6

5. Eyes with -cornea white; body naked or with very inconspicuous pubescence; margins of rostrum and basal part of carinae on telson serrated or crenulated; posterior antennal carina distinctly serrated, between it and posterior lateral carina many tubercles; basal part of outer margin of scaphocerite without fringe of setae.................................... G. atlantica

- Eyes with cornea pigmented; body with short, but dense pubescence; margins of the rostrum (apart from 2 pairs of rostral teeth) not serrated; posterior antennal carinae (apart from 2 blunt posterior teeth) straight, not serrated; between it and posterior lateral carina surface of carapace smooth; outer margin of scaphocerite ciliated for its entire length.......... G. spinicauda *

6. Posterior antennal carina usually rounded anteriorly, not ending in spine; antennal spine directed strongly outward, far more strongly diverging than branchiostegal spine...................................................... G. aurantiaca

- Posterior antennal carina usually ending anteriorly in spine or sharp angle; antennal spine not more strongly diverging than branchiostegal spine................................................................................... 7

7. Anterior intermediate carina not ending in spine; posterior antennal and posterior lateral carinae bearing several blunt tubercles or teeth; anterior of 2 teeth on anterior lateral carina behind pterygostomian spine reaching to or beyond orbital margin................................................................................................. G. longleyi *

- Anterior intermediate carina ending in sharp spine; posterior antennal and posterior lateral carinae straight, without tubercles or teeth; anterior tooth of anterior lateral carina not reaching level of posterior margin of orbit........... G. haematonotus *

8. Anterior antennal carina strong, forming with antennal spine single sharply pointed winglike expansion; anterior lateral carina ending in branchiostegal spine................................................................... G. neglecta

- Anterior antennal carina absent or at most indicated by few small tubercles; antennal spine isolated on anterior margin of carapace, not winglike expanded posteriorly; lateral ridge ending between antennal and branchiostegal spines............... 9

9. Posterior antennal carina ending anteriorly in large winglike expanded spine; tooth at anterior end of anterior lateral carina large and winglike, much wider than antennal spine................................................. G. aculeata *

- Posterior antennal carina anteriorly blunt or ending in small spinule, which not at all winglike; tooth at anterior end of anterior lateral carina, although distinct, much shorter and less wide than antennal spine................................... 10

10. Upper surface of rostrum corrugated at either side of median carina.................................. G. longirostris *

- Upper surface of rostrum at either side of median carina smooth............................................... 11

11. Antennal spine hardly more divergent than branchiostegal spine; posterior antennal carina ending anteriorly in low right angle............................................................................................. G. nobilis

- Antennal spine usually far more strongly diverging than branchiostegal spine; Posterior antennal carina ending in distinct spine........................................................................................... G. alispina *