Species of Greatest Conservation Need

**Species of Greatest Conservation Need** (Approved On: 03/18/2024; Data Updated: 06/16/2025)
Scientifc Name	Common Name	Taxonomic Group	Federal Status	State Status	Global Rank	State Rank	Endemic
Nicrophorus americanus	American burying beetle	Invertebrates	E 08/14/1989	Not Listed	G3	S1	No
Nitocrellopsis texana	No accepted common name	Invertebrates	Not Listed	Not Listed	GNR	SU	Yes
Obovaria arkansasensis	southern hickorynut	Invertebrates	Not Listed	T 01/17/2010	G3G4	S1	No
Ochrotrichia capitana	No accepted common name	Invertebrates	Not Listed	Not Listed	G1G3	S2?	Yes
Ochrotrichia guadalupensis	No accepted common name	Invertebrates	Not Listed	Not Listed	G1G2	S1?	Yes
Oncopodura fenestra	No accepted common name	Invertebrates	Not Listed	Not Listed	G2G3	S2?	Yes
Orconectes maletae	Kisatchie painted crayfish	Invertebrates	Not Listed	Not Listed	G3?	S2	No
Ormiscus albofasciatus	No accepted common name	Invertebrates	Not Listed	Not Listed	GNR	S2	Not Evaluated
Ormiscus irroratus	No accepted common name	Invertebrates	Not Listed	Not Listed	GNR	S1	Not Evaluated
Osmia illinoensis	No accepted common name	Invertebrates	Not Listed	Not Listed	G1	SH	Not Evaluated
Osmia watsoni	No accepted common name	Invertebrates	Not Listed	Not Listed	G2G3	SNR	Not Evaluated
Pachyschelus fisheri	No accepted common name	Invertebrates	Not Listed	Not Listed	GNR	S1	Yes
Palaemonetes texanus	No accepted common name	Invertebrates	Not Listed	Not Listed	G1G2	S1?	Yes
Paraholsingerius smaragdinus	No accepted common name	Invertebrates	Not Listed	Not Listed	GNR	S2	No
Paralimnetis texana	Texas paralimnetis	Invertebrates	Not Listed	Not Listed	G1	S1	Yes
Paramexiweckelia ruffoi	No accepted common name	Invertebrates	Not Listed	Not Listed	G1G2	S2	Yes
Paruroctonus williamsi	No accepted common name	Invertebrates	Not Listed	Not Listed	GNR	S1	Yes
Patera leatherwoodi	Pedernales oval	Invertebrates	Not Listed	Not Listed	G1	S1	Not Evaluated
Perdita dolanensis	Dolan Falls perdita	Invertebrates	Not Listed	Not Listed	G1	S1	Yes
Phallocryptus sublettei	salt playa fairy shrimp	Invertebrates	Not Listed	Not Listed	G2	S3	No
Phoenicobiella schwarzii	No accepted common name	Invertebrates	Not Listed	Not Listed	GNR	S2	No
Photuris flavicollis	sky island firefly	Invertebrates	Not Listed	Not Listed	G1G3	SNR	Not Evaluated
Phreatoceras taylori	nymph trumpet	Invertebrates	Not Listed	Not Listed	G1G2	S3	Yes
Phreatodrobia conica	No accepted common name	Invertebrates	Not Listed	Not Listed	G1	S2	Yes
Phreatodrobia coronae	crowned cavesnail	Invertebrates	Not Listed	T 03/30/2020	G1G2	S2	Yes